/////////////////////////////////////////////////////////////////////////
// $Id: fetchdecode.cc,v 1.189 2008/05/02 22:47:07 sshwarts Exp $
/////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 2001  MandrakeSoft S.A.
//
//    MandrakeSoft S.A.
//    43, rue d'Aboukir
//    75002 Paris - France
//    http://www.linux-mandrake.com/
//    http://www.mandrakesoft.com/
//
//  This library is free software; you can redistribute it and/or
//  modify it under the terms of the GNU Lesser General Public
//  License as published by the Free Software Foundation; either
//  version 2 of the License, or (at your option) any later version.
//
//  This library is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
//  Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with this library; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
//
/////////////////////////////////////////////////////////////////////////

#define NEED_CPU_REG_SHORTCUTS 1
#include "bochs.h"
#include "cpu.h"
#define LOG_THIS BX_CPU_THIS_PTR

///////////////////////////
// prefix bytes
// opcode bytes
// modrm/sib
// address displacement
// immediate constant
///////////////////////////

#define X 0 /* undefined opcode */

static const bx_bool BxOpcodeHasModrm32[512] = {
  /*       0 1 2 3 4 5 6 7 8 9 a b c d e f          */
  /*       -------------------------------          */
  /* 00 */ 1,1,1,1,0,0,0,0,1,1,1,1,0,0,0,X,
  /* 10 */ 1,1,1,1,0,0,0,0,1,1,1,1,0,0,0,0,
  /* 20 */ 1,1,1,1,0,0,X,0,1,1,1,1,0,0,X,0,
  /* 30 */ 1,1,1,1,0,0,X,0,1,1,1,1,0,0,X,0,
  /* 40 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
  /* 50 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
  /* 60 */ 0,0,1,1,X,X,X,X,0,1,0,1,0,0,0,0,
  /* 70 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
  /* 80 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
  /* 90 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
  /* A0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
  /* B0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
  /* C0 */ 1,1,0,0,1,1,1,1,0,0,0,0,0,0,0,0,
  /* D0 */ 1,1,1,1,0,0,0,0,1,1,1,1,1,1,1,1,
  /* E0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
  /* F0 */ X,0,X,X,0,0,1,1,0,0,0,0,0,0,1,1,
  /*       0 1 2 3 4 5 6 7 8 9 a b c d e f           */
  /*       -------------------------------           */
           1,1,1,1,X,0,0,0,0,0,X,0,X,1,0,1, /* 0F 00 */
           1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 0F 10 */
           1,1,1,1,1,X,1,X,1,1,1,1,1,1,1,1, /* 0F 20 */
           0,0,0,0,0,0,X,X,1,X,1,X,X,X,X,X, /* 0F 30 */
           1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 0F 40 */
           1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 0F 50 */
           1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 0F 60 */
           1,1,1,1,1,1,1,0,X,X,X,X,1,1,1,1, /* 0F 70 */
           0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0F 80 */
           1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 0F 90 */
           0,0,0,1,1,1,0,0,0,0,0,1,1,1,1,1, /* 0F A0 */
           1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 0F B0 */
           1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0, /* 0F C0 */
           1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 0F D0 */
           1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 0F E0 */
           1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,X  /* 0F F0 */
  /*       -------------------------------           */
  /*       0 1 2 3 4 5 6 7 8 9 a b c d e f           */
};

#undef X

/* *********** */
// LOCK PREFIX //
/* *********** */

/*
 *  The  LOCK  prefix  can be prepended only to the following instructions
 *  and  only  to  those  forms  of the instructions where the destination
 *  operand  is  a  memory operand: ADD, ADC, AND, BTC, BTR, BTS, CMPXCHG,
 *  CMPXCH8B,  DEC,  INC,  NEG, NOT, OR, SBB, SUB, XOR, XADD, and XCHG. If
 *  the  LOCK prefix is used with one of these instructions and the source
 *  operand  is a memory operand, an undefined opcode exception (#UD) will
 *  be  generated. An undefined opcode exception will also be generated if
 *  the  LOCK  prefix  is used with any instruction not in the above list.
 *  The XCHG instruction always asserts the LOCK# signal regardless of the
 *  presence or absence of the LOCK prefix.
 */

static unsigned Resolve16BaseReg[8] = {
  BX_16BIT_REG_BX,
  BX_16BIT_REG_BX,
  BX_16BIT_REG_BP,
  BX_16BIT_REG_BP,
  BX_16BIT_REG_SI,
  BX_16BIT_REG_DI,
  BX_16BIT_REG_BP,
  BX_16BIT_REG_BX
};

static unsigned Resolve16IndexReg[8] = {
  BX_16BIT_REG_SI,
  BX_16BIT_REG_DI,
  BX_16BIT_REG_SI,
  BX_16BIT_REG_DI,
  BX_NIL_REGISTER,
  BX_NIL_REGISTER,
  BX_NIL_REGISTER,
  BX_NIL_REGISTER
};

// decoding instructions; accessing seg reg's by index
static unsigned sreg_mod00_rm16[8] = {
  BX_SEG_REG_DS,
  BX_SEG_REG_DS,
  BX_SEG_REG_SS,
  BX_SEG_REG_SS,
  BX_SEG_REG_DS,
  BX_SEG_REG_DS,
  BX_SEG_REG_DS,
  BX_SEG_REG_DS
};

static unsigned sreg_mod01or10_rm16[8] = {
  BX_SEG_REG_DS,
  BX_SEG_REG_DS,
  BX_SEG_REG_SS,
  BX_SEG_REG_SS,
  BX_SEG_REG_DS,
  BX_SEG_REG_DS,
  BX_SEG_REG_SS,
  BX_SEG_REG_DS
};

// decoding instructions; accessing seg reg's by index
static unsigned sreg_mod01or10_rm32[8] = {
  BX_SEG_REG_DS,
  BX_SEG_REG_DS,
  BX_SEG_REG_DS,
  BX_SEG_REG_DS,
  BX_SEG_REG_NULL, // escape to SIB-byte
  BX_SEG_REG_SS,
  BX_SEG_REG_DS,
  BX_SEG_REG_DS
};

static unsigned sreg_mod0_base32[8] = {
  BX_SEG_REG_DS,
  BX_SEG_REG_DS,
  BX_SEG_REG_DS,
  BX_SEG_REG_DS,
  BX_SEG_REG_SS,
  BX_SEG_REG_DS,
  BX_SEG_REG_DS,
  BX_SEG_REG_DS
};

static unsigned sreg_mod1or2_base32[8] = {
  BX_SEG_REG_DS,
  BX_SEG_REG_DS,
  BX_SEG_REG_DS,
  BX_SEG_REG_DS,
  BX_SEG_REG_SS,
  BX_SEG_REG_SS,
  BX_SEG_REG_DS,
  BX_SEG_REG_DS
};

// common fetchdecode32/64 opcode tables
#include "fetchdecode.h"

// table of all Bochs opcodes
BxExecutePtr_tR BxOpcodesTable[] = {
#define bx_define_opcode(a, b) &b,
#include "ia_opcodes.h"
};
#undef  bx_define_opcode

/* ************************** */
/* 512 entries for 16bit mode */
/* 512 entries for 32bit mode */
/* ************************** */

static const BxOpcodeInfo_t BxOpcodeInfo32R[512*2] = {
  // 512 entries for 16bit mode
  /* 00 /wr */ { 0, BX_IA_ADD_EbGbR },
  /* 01 /wr */ { 0, BX_IA_ADD_EwGwR },
  /* 02 /wr */ { 0, BX_IA_ADD_GbEbR },
  /* 03 /wr */ { 0, BX_IA_ADD_GwEwR },
  /* 04 /wr */ { BxImmediate_Ib, BX_IA_ADD_ALIb },
  /* 05 /wr */ { BxImmediate_Iw, BX_IA_ADD_AXIw },
  /* 06 /wr */ { 0, BX_IA_PUSH16_ES },
  /* 07 /wr */ { 0, BX_IA_POP16_ES },
  /* 08 /wr */ { 0, BX_IA_OR_EbGbR },
  /* 09 /wr */ { 0, BX_IA_OR_EwGwR },
  /* 0A /wr */ { 0, BX_IA_OR_GbEbR },
  /* 0B /wr */ { 0, BX_IA_OR_GwEwR },
  /* 0C /wr */ { BxImmediate_Ib, BX_IA_OR_ALIb },
  /* 0D /wr */ { BxImmediate_Iw, BX_IA_OR_AXIw },
  /* 0E /wr */ { 0, BX_IA_PUSH16_CS },
  /* 0F /wr */ { 0, BX_IA_ERROR }, // 2-byte escape
  /* 10 /wr */ { 0, BX_IA_ADC_EbGbR },
  /* 11 /wr */ { 0, BX_IA_ADC_EwGwR },
  /* 12 /wr */ { 0, BX_IA_ADC_GbEbR },
  /* 13 /wr */ { 0, BX_IA_ADC_GwEwR },
  /* 14 /wr */ { BxImmediate_Ib, BX_IA_ADC_ALIb },
  /* 15 /wr */ { BxImmediate_Iw, BX_IA_ADC_AXIw },
  /* 16 /wr */ { 0, BX_IA_PUSH16_SS },
  /* 17 /wr */ { BxTraceEnd, BX_IA_POP16_SS }, // async_event = 1
  /* 18 /wr */ { 0, BX_IA_SBB_EbGbR },
  /* 19 /wr */ { 0, BX_IA_SBB_EwGwR },
  /* 1A /wr */ { 0, BX_IA_SBB_GbEbR },
  /* 1B /wr */ { 0, BX_IA_SBB_GwEwR },
  /* 1C /wr */ { BxImmediate_Ib, BX_IA_SBB_ALIb },
  /* 1D /wr */ { BxImmediate_Iw, BX_IA_SBB_AXIw },
  /* 1E /wr */ { 0, BX_IA_PUSH16_DS },
  /* 1F /wr */ { 0, BX_IA_POP16_DS },
  /* 20 /wr */ { 0, BX_IA_AND_EbGbR },
  /* 21 /wr */ { 0, BX_IA_AND_EwGwR },
  /* 22 /wr */ { 0, BX_IA_AND_GbEbR },
  /* 23 /wr */ { 0, BX_IA_AND_GwEwR },
  /* 24 /wr */ { BxImmediate_Ib, BX_IA_AND_ALIb },
  /* 25 /wr */ { BxImmediate_Iw, BX_IA_AND_AXIw },
  /* 26 /wr */ { 0, BX_IA_ERROR }, // ES:
  /* 27 /wr */ { 0, BX_IA_DAA },
  /* 28 /wr */ { 0, BX_IA_SUB_EbGbR },
  /* 29 /wr */ { 0, BX_IA_SUB_EwGwR },
  /* 2A /wr */ { 0, BX_IA_SUB_GbEbR },
  /* 2B /wr */ { 0, BX_IA_SUB_GwEwR },
  /* 2C /wr */ { BxImmediate_Ib, BX_IA_SUB_ALIb },
  /* 2D /wr */ { BxImmediate_Iw, BX_IA_SUB_AXIw },
  /* 2E /wr */ { 0, BX_IA_ERROR }, // CS:
  /* 2F /wr */ { 0, BX_IA_DAS },
  /* 30 /wr */ { 0, BX_IA_XOR_EbGbR },
  /* 31 /wr */ { 0, BX_IA_XOR_EwGwR },
  /* 32 /wr */ { 0, BX_IA_XOR_GbEbR },
  /* 33 /wr */ { 0, BX_IA_XOR_GwEwR },
  /* 34 /wr */ { BxImmediate_Ib, BX_IA_XOR_ALIb },
  /* 35 /wr */ { BxImmediate_Iw, BX_IA_XOR_AXIw },
  /* 36 /wr */ { 0, BX_IA_ERROR }, // SS:
  /* 37 /wr */ { 0, BX_IA_AAA },
  /* 38 /wr */ { 0, BX_IA_CMP_EbGbR },
  /* 39 /wr */ { 0, BX_IA_CMP_EwGwR },
  /* 3A /wr */ { 0, BX_IA_CMP_GbEbR },
  /* 3B /wr */ { 0, BX_IA_CMP_GwEwR },
  /* 3C /wr */ { BxImmediate_Ib, BX_IA_CMP_ALIb },
  /* 3D /wr */ { BxImmediate_Iw, BX_IA_CMP_AXIw },
  /* 3E /wr */ { 0, BX_IA_ERROR }, // DS:
  /* 3F /wr */ { 0, BX_IA_AAS },
  /* 40 /wr */ { 0, BX_IA_INC_RX },
  /* 41 /wr */ { 0, BX_IA_INC_RX },
  /* 42 /wr */ { 0, BX_IA_INC_RX },
  /* 43 /wr */ { 0, BX_IA_INC_RX },
  /* 44 /wr */ { 0, BX_IA_INC_RX },
  /* 45 /wr */ { 0, BX_IA_INC_RX },
  /* 46 /wr */ { 0, BX_IA_INC_RX },
  /* 47 /wr */ { 0, BX_IA_INC_RX },
  /* 48 /wr */ { 0, BX_IA_DEC_RX },
  /* 49 /wr */ { 0, BX_IA_DEC_RX },
  /* 4A /wr */ { 0, BX_IA_DEC_RX },
  /* 4B /wr */ { 0, BX_IA_DEC_RX },
  /* 4C /wr */ { 0, BX_IA_DEC_RX },
  /* 4D /wr */ { 0, BX_IA_DEC_RX },
  /* 4E /wr */ { 0, BX_IA_DEC_RX },
  /* 4F /wr */ { 0, BX_IA_DEC_RX },
  /* 50 /wr */ { 0, BX_IA_PUSH_RX },
  /* 51 /wr */ { 0, BX_IA_PUSH_RX },
  /* 52 /wr */ { 0, BX_IA_PUSH_RX },
  /* 53 /wr */ { 0, BX_IA_PUSH_RX },
  /* 54 /wr */ { 0, BX_IA_PUSH_RX },
  /* 55 /wr */ { 0, BX_IA_PUSH_RX },
  /* 56 /wr */ { 0, BX_IA_PUSH_RX },
  /* 57 /wr */ { 0, BX_IA_PUSH_RX },
  /* 58 /wr */ { 0, BX_IA_POP_RX },
  /* 59 /wr */ { 0, BX_IA_POP_RX },
  /* 5A /wr */ { 0, BX_IA_POP_RX },
  /* 5B /wr */ { 0, BX_IA_POP_RX },
  /* 5C /wr */ { 0, BX_IA_POP_RX },
  /* 5D /wr */ { 0, BX_IA_POP_RX },
  /* 5E /wr */ { 0, BX_IA_POP_RX },
  /* 5F /wr */ { 0, BX_IA_POP_RX },
  /* 60 /wr */ { 0, BX_IA_PUSHAD16 },
  /* 61 /wr */ { 0, BX_IA_POPAD16 },
  /* 62 /wr */ { 0, BX_IA_ERROR }, // BOUND
  /* 63 /wr */ { 0, BX_IA_ARPL_EwGw },
  /* 64 /wr */ { 0, BX_IA_ERROR }, // FS:
  /* 65 /wr */ { 0, BX_IA_ERROR }, // GS:
  /* 66 /wr */ { 0, BX_IA_ERROR }, // OS:
  /* 67 /wr */ { 0, BX_IA_ERROR }, // AS:
  /* 68 /wr */ { BxImmediate_Iw, BX_IA_PUSH_Iw },
  /* 69 /wr */ { BxImmediate_Iw, BX_IA_IMUL_GwEwIw },
  /* 6A /wr */ { BxImmediate_Ib_SE, BX_IA_PUSH_Iw },
  /* 6B /wr */ { BxImmediate_Ib_SE, BX_IA_IMUL_GwEwIw },
  /* 6C /wr */ { 0, BX_IA_REP_INSB_YbDX },
  /* 6D /wr */ { 0, BX_IA_REP_INSW_YwDX },
  /* 6E /wr */ { 0, BX_IA_REP_OUTSB_DXXb },
  /* 6F /wr */ { 0, BX_IA_REP_OUTSW_DXXw },
  /* 70 /wr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JO_Jw },
  /* 71 /wr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNO_Jw },
  /* 72 /wr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JB_Jw },
  /* 73 /wr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNB_Jw },
  /* 74 /wr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JZ_Jw },
  /* 75 /wr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNZ_Jw },
  /* 76 /wr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JBE_Jw },
  /* 77 /wr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNBE_Jw },
  /* 78 /wr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JS_Jw },
  /* 79 /wr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNS_Jw },
  /* 7A /wr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JP_Jw },
  /* 7B /wr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNP_Jw },
  /* 7C /wr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JL_Jw },
  /* 7D /wr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNL_Jw },
  /* 7E /wr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JLE_Jw },
  /* 7F /wr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNLE_Jw },
  /* 80 /wr */ { BxGroup1 | BxImmediate_Ib, BX_IA_ERROR, BxOpcodeInfoG1EbIbR },
  /* 81 /wr */ { BxGroup1 | BxImmediate_Iw, BX_IA_ERROR, BxOpcodeInfoG1EwR },
  /* 82 /wr */ { BxGroup1 | BxImmediate_Ib, BX_IA_ERROR, BxOpcodeInfoG1EbIbR },
  /* 83 /wr */ { BxGroup1 | BxImmediate_Ib_SE, BX_IA_ERROR, BxOpcodeInfoG1EwR },
  /* 84 /wr */ { 0, BX_IA_TEST_EbGbR },
  /* 85 /wr */ { 0, BX_IA_TEST_EwGwR },
  /* 86 /wr */ { 0, BX_IA_XCHG_EbGbR },
  /* 87 /wr */ { 0, BX_IA_XCHG_EwGwR },
  /* 88 /wr */ { 0, BX_IA_MOV_EbGbR },
  /* 89 /wr */ { 0, BX_IA_MOV_EwGwR },
  /* 8A /wr */ { 0, BX_IA_MOV_GbEbR },
  /* 8B /wr */ { 0, BX_IA_MOV_GwEwR },
  /* 8C /wr */ { 0, BX_IA_MOV_EwSwR },
  /* 8D /wr */ { 0, BX_IA_ERROR }, // LEA
  /* 8E /wr */ { 0, BX_IA_MOV_SwEw },
  /* 8F /wr */ { BxGroup1A, BX_IA_ERROR, BxOpcodeInfoG1AEwR },
  /* 90 /wr */ { 0, BX_IA_NOP },
  /* 91 /wr */ { 0, BX_IA_XCHG_RXAX },
  /* 92 /wr */ { 0, BX_IA_XCHG_RXAX },
  /* 93 /wr */ { 0, BX_IA_XCHG_RXAX },
  /* 94 /wr */ { 0, BX_IA_XCHG_RXAX },
  /* 95 /wr */ { 0, BX_IA_XCHG_RXAX },
  /* 96 /wr */ { 0, BX_IA_XCHG_RXAX },
  /* 97 /wr */ { 0, BX_IA_XCHG_RXAX },
  /* 98 /wr */ { 0, BX_IA_CBW },
  /* 99 /wr */ { 0, BX_IA_CWD },
  /* 9A /wr */ { BxImmediate_IvIw | BxTraceEnd, BX_IA_CALL16_Ap },
  /* 9B /wr */ { 0, BX_IA_FWAIT },
  /* 9C /wr */ { 0, BX_IA_PUSHF_Fw },
  /* 9D /wr */ { 0, BX_IA_POPF_Fw },
  /* 9E /wr */ { 0, BX_IA_SAHF },
  /* 9F /wr */ { 0, BX_IA_LAHF },
  /* A0 /wr */ { BxImmediate_O, BX_IA_MOV_ALOd },
  /* A1 /wr */ { BxImmediate_O, BX_IA_MOV_AXOd },
  /* A2 /wr */ { BxImmediate_O, BX_IA_MOV_OdAL },
  /* A3 /wr */ { BxImmediate_O, BX_IA_MOV_OdAX },
  /* A4 /wr */ { 0, BX_IA_REP_MOVSB_XbYb },
  /* A5 /wr */ { 0, BX_IA_REP_MOVSW_XwYw },
  /* A6 /wr */ { 0, BX_IA_REP_CMPSB_XbYb },
  /* A7 /wr */ { 0, BX_IA_REP_CMPSW_XwYw },
  /* A8 /wr */ { BxImmediate_Ib, BX_IA_TEST_ALIb },
  /* A9 /wr */ { BxImmediate_Iw, BX_IA_TEST_AXIw },
  /* AA /wr */ { 0, BX_IA_REP_STOSB_YbAL },
  /* AB /wr */ { 0, BX_IA_REP_STOSW_YwAX },
  /* AC /wr */ { 0, BX_IA_REP_LODSB_ALXb },
  /* AD /wr */ { 0, BX_IA_REP_LODSW_AXXw },
  /* AE /wr */ { 0, BX_IA_REP_SCASB_ALXb },
  /* AF /wr */ { 0, BX_IA_REP_SCASW_AXXw },
  /* B0 /wr */ { BxImmediate_Ib, BX_IA_MOV_RLIb },
  /* B1 /wr */ { BxImmediate_Ib, BX_IA_MOV_RLIb },
  /* B2 /wr */ { BxImmediate_Ib, BX_IA_MOV_RLIb },
  /* B3 /wr */ { BxImmediate_Ib, BX_IA_MOV_RLIb },
  /* B4 /wr */ { BxImmediate_Ib, BX_IA_MOV_RHIb },
  /* B5 /wr */ { BxImmediate_Ib, BX_IA_MOV_RHIb },
  /* B6 /wr */ { BxImmediate_Ib, BX_IA_MOV_RHIb },
  /* B7 /wr */ { BxImmediate_Ib, BX_IA_MOV_RHIb },
  /* B8 /wr */ { BxImmediate_Iw, BX_IA_MOV_RXIw },
  /* B9 /wr */ { BxImmediate_Iw, BX_IA_MOV_RXIw },
  /* BA /wr */ { BxImmediate_Iw, BX_IA_MOV_RXIw },
  /* BB /wr */ { BxImmediate_Iw, BX_IA_MOV_RXIw },
  /* BC /wr */ { BxImmediate_Iw, BX_IA_MOV_RXIw },
  /* BD /wr */ { BxImmediate_Iw, BX_IA_MOV_RXIw },
  /* BE /wr */ { BxImmediate_Iw, BX_IA_MOV_RXIw },
  /* BF /wr */ { BxImmediate_Iw, BX_IA_MOV_RXIw },
  /* C0 /wr */ { BxGroup2 | BxImmediate_Ib, BX_IA_ERROR, BxOpcodeInfoG2Eb },
  /* C1 /wr */ { BxGroup2 | BxImmediate_Ib, BX_IA_ERROR, BxOpcodeInfoG2Ew },
  /* C2 /wr */ { BxImmediate_Iw | BxTraceEnd, BX_IA_RETnear16_Iw },
  /* C3 /wr */ { BxTraceEnd,                  BX_IA_RETnear16 },
  /* C4 /wr */ { 0, BX_IA_ERROR }, // LES
  /* C5 /wr */ { 0, BX_IA_ERROR }, // LDS
  /* C6 /wr */ { BxGroup11, BX_IA_ERROR, BxOpcodeInfoG11EbR },
  /* C7 /wr */ { BxGroup11, BX_IA_ERROR, BxOpcodeInfoG11EwR },
  /* C8 /wr */ { BxImmediate_IwIb, BX_IA_ENTER16_IwIb },
  /* C9 /wr */ { 0, BX_IA_LEAVE },
  /* CA /wr */ { BxImmediate_Iw | BxTraceEnd, BX_IA_RETfar16_Iw },
  /* CB /wr */ { BxTraceEnd,                  BX_IA_RETfar16 },
  /* CC /wr */ { BxTraceEnd, BX_IA_INT3 },
  /* CD /wr */ { BxImmediate_Ib | BxTraceEnd, BX_IA_INT_Ib },
  /* CE /wr */ { BxTraceEnd, BX_IA_INTO },
  /* CF /wr */ { BxTraceEnd, BX_IA_IRET16 },
  /* D0 /wr */ { BxGroup2 | BxImmediate_I1, BX_IA_ERROR, BxOpcodeInfoG2Eb },
  /* D1 /wr */ { BxGroup2 | BxImmediate_I1, BX_IA_ERROR, BxOpcodeInfoG2Ew },
  /* D2 /wr */ { BxGroup2, BX_IA_ERROR, BxOpcodeInfoG2Eb },
  /* D3 /wr */ { BxGroup2, BX_IA_ERROR, BxOpcodeInfoG2Ew },
  /* D4 /wr */ { BxImmediate_Ib, BX_IA_AAM },
  /* D5 /wr */ { BxImmediate_Ib, BX_IA_AAD },
  /* D6 /wr */ { 0, BX_IA_SALC },
  /* D7 /wr */ { 0, BX_IA_XLAT },
#if BX_SUPPORT_FPU
  /* D8 /wr */ { BxFPEscape, BX_IA_ERROR, BxOpcodeInfo_FloatingPoint },
  /* D9 /wr */ { BxFPEscape, BX_IA_ERROR, BxOpcodeInfo_FloatingPoint },
  /* DA /wr */ { BxFPEscape, BX_IA_ERROR, BxOpcodeInfo_FloatingPoint },
  /* DB /wr */ { BxFPEscape, BX_IA_ERROR, BxOpcodeInfo_FloatingPoint },
  /* DC /wr */ { BxFPEscape, BX_IA_ERROR, BxOpcodeInfo_FloatingPoint },
  /* DD /wr */ { BxFPEscape, BX_IA_ERROR, BxOpcodeInfo_FloatingPoint },
  /* DE /wr */ { BxFPEscape, BX_IA_ERROR, BxOpcodeInfo_FloatingPoint },
  /* DF /wr */ { BxFPEscape, BX_IA_ERROR, BxOpcodeInfo_FloatingPoint },
#else
  /* D8 /wr */ { 0, BX_IA_FPU_ESC },
  /* D9 /wr */ { 0, BX_IA_FPU_ESC },
  /* DA /wr */ { 0, BX_IA_FPU_ESC },
  /* DB /wr */ { 0, BX_IA_FPU_ESC },
  /* DC /wr */ { 0, BX_IA_FPU_ESC },
  /* DD /wr */ { 0, BX_IA_FPU_ESC },
  /* DE /wr */ { 0, BX_IA_FPU_ESC },
  /* DF /wr */ { 0, BX_IA_FPU_ESC },
#endif
  /* E0 /wr */ { BxImmediate_BrOff8 | BxTraceEnd, BX_IA_LOOPNE_Jb },
  /* E1 /wr */ { BxImmediate_BrOff8 | BxTraceEnd, BX_IA_LOOPE_Jb },
  /* E2 /wr */ { BxImmediate_BrOff8 | BxTraceEnd, BX_IA_LOOP_Jb },
  /* E3 /wr */ { BxImmediate_BrOff8 | BxTraceEnd, BX_IA_JCXZ_Jb },
  /* E4 /wr */ { BxImmediate_Ib, BX_IA_IN_ALIb },
  /* E5 /wr */ { BxImmediate_Ib, BX_IA_IN_AXIb },
  /* E6 /wr */ { BxImmediate_Ib, BX_IA_OUT_IbAL },
  /* E7 /wr */ { BxImmediate_Ib, BX_IA_OUT_IbAX },
  /* E8 /wr */ { BxImmediate_BrOff16 | BxTraceEnd, BX_IA_CALL_Jw },
  /* E9 /wr */ { BxImmediate_BrOff16 | BxTraceEnd, BX_IA_JMP_Jw },
  /* EA /wr */ { BxImmediate_IvIw | BxTraceEnd, BX_IA_JMP_Ap },
  /* EB /wr */ { BxImmediate_BrOff8 | BxTraceEnd, BX_IA_JMP_Jw },
  /* EC /wr */ { 0, BX_IA_IN_ALDX },
  /* ED /wr */ { 0, BX_IA_IN_AXDX },
  /* EE /wr */ { 0, BX_IA_OUT_DXAL },
  /* EF /wr */ { 0, BX_IA_OUT_DXAX },
  /* F0 /wr */ { 0, BX_IA_ERROR }, // LOCK
  /* F1 /wr */ { BxTraceEnd, BX_IA_INT1 },
  /* F2 /wr */ { 0, BX_IA_ERROR }, // REPNE/REPNZ
  /* F3 /wr */ { 0, BX_IA_ERROR }, // REP, REPE/REPZ
  /* F4 /wr */ { BxTraceEnd, BX_IA_HLT },
  /* F5 /wr */ { 0, BX_IA_CMC },
  /* F6 /wr */ { BxGroup3, BX_IA_ERROR, BxOpcodeInfoG3EbR },
  /* F7 /wr */ { BxGroup3, BX_IA_ERROR, BxOpcodeInfoG3EwR },
  /* F8 /wr */ { 0, BX_IA_CLC },
  /* F9 /wr */ { 0, BX_IA_STC },
  /* FA /wr */ { 0, BX_IA_CLI },
  /* FB /wr */ { 0, BX_IA_STI },
  /* FC /wr */ { 0, BX_IA_CLD },
  /* FD /wr */ { 0, BX_IA_STD },
  /* FE /wr */ { BxGroup4, BX_IA_ERROR, BxOpcodeInfoG4R },
  /* FF /wr */ { BxGroup5, BX_IA_ERROR, BxOpcodeInfoG5wR },

  /* 0F 00 /wr */ { BxGroup6, BX_IA_ERROR, BxOpcodeInfoG6 },
  /* 0F 01 /wr */ { BxGroup7, BX_IA_ERROR, BxOpcodeInfoG7R },
  /* 0F 02 /wr */ { 0, BX_IA_LAR_GvEw },
  /* 0F 03 /wr */ { 0, BX_IA_LSL_GvEw },
  /* 0F 04 /wr */ { 0, BX_IA_ERROR },
#if BX_SUPPORT_X86_64
  /* 0F 05 /wr */ { BxTraceEnd, BX_IA_SYSCALL },
#elif BX_CPU_LEVEL == 2
  /* 0F 05 /wr */ { BxTraceEnd, BX_IA_LOADALL },
#else
  /* 0F 05 /wr */ { 0, BX_IA_ERROR },
#endif
  /* 0F 06 /wr */ { 0, BX_IA_CLTS },
#if BX_SUPPORT_X86_64
  /* 0F 07 /wr */ { BxTraceEnd, BX_IA_SYSRET },
#else
  /* 0F 07 /wr */ { 0, BX_IA_ERROR },
#endif
  /* 0F 08 /wr */ { BxTraceEnd, BX_IA_INVD },
  /* 0F 09 /wr */ { BxTraceEnd, BX_IA_WBINVD },
  /* 0F 0A /wr */ { 0, BX_IA_ERROR },
  /* 0F 0B /wr */ { BxTraceEnd, BX_IA_UD2A },
  /* 0F 0C /wr */ { 0, BX_IA_ERROR },
#if BX_SUPPORT_X86_64 || BX_SUPPORT_3DNOW
  /* 0F 0D /wr */ { 0, BX_IA_NOP },             // 3DNow! PREFETCH on AMD, NOP on Intel
#else
  /* 0F 0D /wr */ { 0, BX_IA_ERROR },
#endif
  /* 0F 0E /wr */ { 0, BX_IA_FEMMS },           // 3DNow! FEMMS
#if BX_SUPPORT_3DNOW
  /* 0F 0F /wr */ { BxImmediate_Ib, BX_IA_ERROR, Bx3DNowOpcodeInfo },
#else
  /* 0F 0F /wr */ { 0, BX_IA_ERROR },
#endif
  /* 0F 10 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f10 },
  /* 0F 11 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f11 },
  /* 0F 12 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f12 },
  /* 0F 13 /wr */ { 0, BX_IA_ERROR },  // MOVLPS/PD SSE group
  /* 0F 14 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f14 },
  /* 0F 15 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f15 },
  /* 0F 16 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f16 },
  /* 0F 17 /wr */ { 0, BX_IA_ERROR },  // MOHLPS/PD SSE group
#if BX_CPU_LEVEL >= 6
  /* 0F 18 /wr */ { 0, BX_IA_NOP },    // PREFETCH HINT
  /* 0F 19 /wr */ { 0, BX_IA_NOP },    // multi-byte NOP
  /* 0F 1A /wr */ { 0, BX_IA_NOP },    // multi-byte NOP
  /* 0F 1B /wr */ { 0, BX_IA_NOP },    // multi-byte NOP
  /* 0F 1C /wr */ { 0, BX_IA_NOP },    // multi-byte NOP
  /* 0F 1D /wr */ { 0, BX_IA_NOP },    // multi-byte NOP
  /* 0F 1E /wr */ { 0, BX_IA_NOP },    // multi-byte NOP
  /* 0F 1F /wr */ { 0, BX_IA_NOP },    // multi-byte NOP
#else
  /* 0F 18 /wr */ { 0, BX_IA_ERROR },
  /* 0F 19 /wr */ { 0, BX_IA_ERROR },
  /* 0F 1A /wr */ { 0, BX_IA_ERROR },
  /* 0F 1B /wr */ { 0, BX_IA_ERROR },
  /* 0F 1C /wr */ { 0, BX_IA_ERROR },
  /* 0F 1D /wr */ { 0, BX_IA_ERROR },
  /* 0F 1E /wr */ { 0, BX_IA_ERROR },
  /* 0F 1F /wr */ { 0, BX_IA_ERROR },
#endif
  /* 0F 20 /wr */ { 0, BX_IA_MOV_RdCd },
  /* 0F 21 /wr */ { 0, BX_IA_MOV_RdDd },
  /* 0F 22 /wr */ { BxTraceEnd, BX_IA_MOV_CdRd },
  /* 0F 23 /wr */ { BxTraceEnd, BX_IA_MOV_DdRd },
  /* 0F 24 /wr */ { BxTraceEnd, BX_IA_MOV_RdTd }, // not implemented
  /* 0F 25 /wr */ { 0, BX_IA_ERROR },
  /* 0F 26 /wr */ { BxTraceEnd, BX_IA_MOV_TdRd }, // not implemented
  /* 0F 27 /wr */ { 0, BX_IA_ERROR },
  /* 0F 28 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f28 },
  /* 0F 29 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f29 },
  /* 0F 2A /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2a },
  /* 0F 2B /wr */ { 0, BX_IA_ERROR }, // MOVNTPS/PD/SS/SD
  /* 0F 2C /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2c },
  /* 0F 2D /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2d },
  /* 0F 2E /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2e },
  /* 0F 2F /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2f },
  /* 0F 30 /wr */ { 0, BX_IA_WRMSR },
  /* 0F 31 /wr */ { 0, BX_IA_RDTSC },
  /* 0F 32 /wr */ { 0, BX_IA_RDMSR },
  /* 0F 33 /wr */ { 0, BX_IA_RDPMC },
  /* 0F 34 /wr */ { BxTraceEnd, BX_IA_SYSENTER },
  /* 0F 35 /wr */ { BxTraceEnd, BX_IA_SYSEXIT },
  /* 0F 36 /wr */ { 0, BX_IA_ERROR },
  /* 0F 37 /wr */ { 0, BX_IA_ERROR },
#if (BX_SUPPORT_SSE >= 4) || (BX_SUPPORT_SSE >= 3 && BX_SUPPORT_SSE_EXTENSION > 0)
  /* 0F 38 /wr */ { Bx3ByteOp, BX_IA_ERROR, BxOpcode3ByteTable0f38 }, // 3-byte escape
#else
  /* 0F 38 /wr */ { 0, BX_IA_ERROR },
#endif
  /* 0F 39 /wr */ { 0, BX_IA_ERROR },
#if (BX_SUPPORT_SSE >= 4) || (BX_SUPPORT_SSE >= 3 && BX_SUPPORT_SSE_EXTENSION > 0)
  /* 0F 3A /wr */ { Bx3ByteOp, BX_IA_ERROR, BxOpcode3ByteTable0f3a }, // 3-byte escape
#else
  /* 0F 3A /wr */ { 0, BX_IA_ERROR },
#endif
  /* 0F 3B /wr */ { 0, BX_IA_ERROR },
  /* 0F 3C /wr */ { 0, BX_IA_ERROR },
  /* 0F 3D /wr */ { 0, BX_IA_ERROR },
  /* 0F 3E /wr */ { 0, BX_IA_ERROR },
  /* 0F 3F /wr */ { 0, BX_IA_ERROR },
  /* 0F 40 /wr */ { 0, BX_IA_CMOVO_GwEwR },
  /* 0F 41 /wr */ { 0, BX_IA_CMOVNO_GwEwR },
  /* 0F 42 /wr */ { 0, BX_IA_CMOVB_GwEwR },
  /* 0F 43 /wr */ { 0, BX_IA_CMOVNB_GwEwR },
  /* 0F 44 /wr */ { 0, BX_IA_CMOVZ_GwEwR },
  /* 0F 45 /wr */ { 0, BX_IA_CMOVNZ_GwEwR },
  /* 0F 46 /wr */ { 0, BX_IA_CMOVBE_GwEwR },
  /* 0F 47 /wr */ { 0, BX_IA_CMOVNBE_GwEwR },
  /* 0F 48 /wr */ { 0, BX_IA_CMOVS_GwEwR },
  /* 0F 49 /wr */ { 0, BX_IA_CMOVNS_GwEwR },
  /* 0F 4A /wr */ { 0, BX_IA_CMOVP_GwEwR },
  /* 0F 4B /wr */ { 0, BX_IA_CMOVNP_GwEwR },
  /* 0F 4C /wr */ { 0, BX_IA_CMOVL_GwEwR },
  /* 0F 4D /wr */ { 0, BX_IA_CMOVNL_GwEwR },
  /* 0F 4E /wr */ { 0, BX_IA_CMOVLE_GwEwR },
  /* 0F 4F /wr */ { 0, BX_IA_CMOVNLE_GwEwR },
  /* 0F 50 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f50 },
  /* 0F 51 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f51 },
  /* 0F 52 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f52 },
  /* 0F 53 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f53 },
  /* 0F 54 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f54 },
  /* 0F 55 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f55 },
  /* 0F 56 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f56 },
  /* 0F 57 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f57 },
  /* 0F 58 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f58 },
  /* 0F 59 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f59 },
  /* 0F 5A /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5a },
  /* 0F 5B /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5b },
  /* 0F 5C /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5c },
  /* 0F 5D /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5d },
  /* 0F 5E /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5e },
  /* 0F 5F /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5f },
  /* 0F 60 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f60 },
  /* 0F 61 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f61 },
  /* 0F 62 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f62 },
  /* 0F 63 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f63 },
  /* 0F 64 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f64 },
  /* 0F 65 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f65 },
  /* 0F 66 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f66 },
  /* 0F 67 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f67 },
  /* 0F 68 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f68 },
  /* 0F 69 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f69 },
  /* 0F 6A /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6a },
  /* 0F 6B /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6b },
  /* 0F 6C /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6c },
  /* 0F 6D /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6d },
  /* 0F 6E /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6e },
  /* 0F 6F /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6f },
  /* 0F 70 /wr */ { BxImmediate_Ib | BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f70 },
  /* 0F 71 /wr */ { BxGroup12, BX_IA_ERROR, BxOpcodeInfoG12R },
  /* 0F 72 /wr */ { BxGroup13, BX_IA_ERROR, BxOpcodeInfoG13R },
  /* 0F 73 /wr */ { BxGroup14, BX_IA_ERROR, BxOpcodeInfoG14R },
  /* 0F 74 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f74 },
  /* 0F 75 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f75 },
  /* 0F 76 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f76 },
  /* 0F 77 /wr */ { 0, BX_IA_EMMS },
  /* 0F 78 /wr */ { 0, BX_IA_ERROR },
  /* 0F 79 /wr */ { 0, BX_IA_ERROR },
  /* 0F 7A /wr */ { 0, BX_IA_ERROR },
  /* 0F 7B /wr */ { 0, BX_IA_ERROR },
  /* 0F 7C /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f7c },
  /* 0F 7D /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f7d },
  /* 0F 7E /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f7e },
  /* 0F 7F /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f7f },
  /* 0F 80 /wr */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JO_Jw },
  /* 0F 81 /wr */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JNO_Jw },
  /* 0F 82 /wr */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JB_Jw },
  /* 0F 83 /wr */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JNB_Jw },
  /* 0F 84 /wr */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JZ_Jw },
  /* 0F 85 /wr */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JNZ_Jw },
  /* 0F 86 /wr */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JBE_Jw },
  /* 0F 87 /wr */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JNBE_Jw },
  /* 0F 88 /wr */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JS_Jw },
  /* 0F 89 /wr */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JNS_Jw },
  /* 0F 8A /wr */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JP_Jw },
  /* 0F 8B /wr */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JNP_Jw },
  /* 0F 8C /wr */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JL_Jw },
  /* 0F 8D /wr */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JNL_Jw },
  /* 0F 8E /wr */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JLE_Jw },
  /* 0F 8F /wr */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JNLE_Jw },
  /* 0F 90 /wr */ { 0, BX_IA_SETO_EbR },
  /* 0F 91 /wr */ { 0, BX_IA_SETNO_EbR },
  /* 0F 92 /wr */ { 0, BX_IA_SETB_EbR },
  /* 0F 93 /wr */ { 0, BX_IA_SETNB_EbR },
  /* 0F 94 /wr */ { 0, BX_IA_SETZ_EbR },
  /* 0F 95 /wr */ { 0, BX_IA_SETNZ_EbR },
  /* 0F 96 /wr */ { 0, BX_IA_SETBE_EbR },
  /* 0F 97 /wr */ { 0, BX_IA_SETNBE_EbR },
  /* 0F 98 /wr */ { 0, BX_IA_SETS_EbR },
  /* 0F 99 /wr */ { 0, BX_IA_SETNS_EbR },
  /* 0F 9A /wr */ { 0, BX_IA_SETP_EbR },
  /* 0F 9B /wr */ { 0, BX_IA_SETNP_EbR },
  /* 0F 9C /wr */ { 0, BX_IA_SETL_EbR },
  /* 0F 9D /wr */ { 0, BX_IA_SETNL_EbR },
  /* 0F 9E /wr */ { 0, BX_IA_SETLE_EbR },
  /* 0F 9F /wr */ { 0, BX_IA_SETNLE_EbR },
  /* 0F A0 /wr */ { 0, BX_IA_PUSH16_FS },
  /* 0F A1 /wr */ { 0, BX_IA_POP16_FS },
  /* 0F A2 /wr */ { 0, BX_IA_CPUID },
  /* 0F A3 /wr */ { 0, BX_IA_BT_EwGwR },
  /* 0F A4 /wr */ { BxImmediate_Ib, BX_IA_SHLD_EwGwR },
  /* 0F A5 /wr */ { 0,              BX_IA_SHLD_EwGwR },
  /* 0F A6 /wr */ { BxTraceEnd, BX_IA_CMPXCHG_XBTS }, // not implemented
  /* 0F A7 /wr */ { BxTraceEnd, BX_IA_CMPXCHG_IBTS }, // not implemented
  /* 0F A8 /wr */ { 0, BX_IA_PUSH16_GS },
  /* 0F A9 /wr */ { 0, BX_IA_POP16_GS },
  /* 0F AA /wr */ { BxTraceEnd, BX_IA_RSM },
  /* 0F AB /wr */ { 0, BX_IA_BTS_EwGwR },
  /* 0F AC /wr */ { BxImmediate_Ib, BX_IA_SHRD_EwGwR },
  /* 0F AD /wr */ { 0,              BX_IA_SHRD_EwGwR },
  /* 0F AE /wr */ { BxGroup15, BX_IA_ERROR, BxOpcodeInfoG15R },
  /* 0F AF /wr */ { 0, BX_IA_IMUL_GwEw },
  /* 0F B0 /wr */ { 0, BX_IA_CMPXCHG_EbGbR },
  /* 0F B1 /wr */ { 0, BX_IA_CMPXCHG_EwGwR },
  /* 0F B2 /wr */ { 0, BX_IA_ERROR }, // LSS
  /* 0F B3 /wr */ { 0, BX_IA_BTR_EwGwR },
  /* 0F B4 /wr */ { 0, BX_IA_ERROR }, // LFS
  /* 0F B5 /wr */ { 0, BX_IA_ERROR }, // LGS
  /* 0F B6 /wr */ { 0, BX_IA_MOVZX_GwEbR },
  /* 0F B7 /wr */ { 0, BX_IA_MOV_GwEwR }, // MOVZX_GwEw
  /* 0F B8 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fb8w },
  /* 0F B9 /wr */ { 0, BX_IA_UD2B },
  /* 0F BA /wr */ { BxGroup8, BX_IA_ERROR, BxOpcodeInfoG8EwIbR },
  /* 0F BB /wr */ { 0, BX_IA_BTC_EwGwR },
  /* 0F BC /wr */ { 0, BX_IA_BSF_GwEw },
  /* 0F BD /wr */ { 0, BX_IA_BSR_GwEw },
  /* 0F BE /wr */ { 0, BX_IA_MOVSX_GwEbR },
  /* 0F BF /wr */ { 0, BX_IA_MOV_GwEwR }, // MOVSX_GwEw
  /* 0F C0 /wr */ { 0, BX_IA_XADD_EbGbR },
  /* 0F C1 /wr */ { 0, BX_IA_XADD_EwGwR },
  /* 0F C2 /wr */ { BxImmediate_Ib | BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fc2 },
  /* 0F C3 /wr */ { 0, BX_IA_ERROR }, // MOVNTI SSE group
  /* 0F C4 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fc4 },
  /* 0F C5 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fc5R },
  /* 0F C6 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fc6 },
  /* 0F C7 /wr */ { 0, BX_IA_ERROR }, // CMPXCHG8B G9 group
  /* 0F C8 /wr */ { 0, BX_IA_BSWAP_ERX },
  /* 0F C9 /wr */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CA /wr */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CB /wr */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CC /wr */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CD /wr */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CE /wr */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CF /wr */ { 0, BX_IA_BSWAP_ERX },
  /* 0F D0 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd0 },
  /* 0F D1 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd1 },
  /* 0F D2 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd2 },
  /* 0F D3 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd3 },
  /* 0F D4 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd4 },
  /* 0F D5 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd5 },
  /* 0F D6 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd6 },
  /* 0F D7 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd7 },
  /* 0F D8 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd8 },
  /* 0F D9 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd9 },
  /* 0F DA /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fda },
  /* 0F DB /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fdb },
  /* 0F DC /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fdc },
  /* 0F DD /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fdd },
  /* 0F DE /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fde },
  /* 0F DF /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fdf },
  /* 0F E0 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe0 },
  /* 0F E1 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe1 },
  /* 0F E2 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe2 },
  /* 0F E3 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe3 },
  /* 0F E4 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe4 },
  /* 0F E5 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe5 },
  /* 0F E6 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe6 },
  /* 0F E7 /wr */ { 0, BX_IA_ERROR }, // MOVNTQ/MOVNTDQ SSE group
  /* 0F E8 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe8 },
  /* 0F E9 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe9 },
  /* 0F EA /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fea },
  /* 0F EB /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0feb },
  /* 0F EC /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fec },
  /* 0F ED /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fed },
  /* 0F EE /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fee },
  /* 0F EF /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fef },
  /* 0F F0 /wr */ { 0, BX_IA_ERROR }, // LDDQU SSE group
  /* 0F F1 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff1 },
  /* 0F F2 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff2 },
  /* 0F F3 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff3 },
  /* 0F F4 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff4 },
  /* 0F F5 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff5 },
  /* 0F F6 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff6 },
  /* 0F F7 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff7R },
  /* 0F F8 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff8 },
  /* 0F F9 /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff9 },
  /* 0F FA /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ffa },
  /* 0F FB /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ffb },
  /* 0F FC /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ffc },
  /* 0F FD /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ffd },
  /* 0F FE /wr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ffe },
  /* 0F FF /wr */ { 0, BX_IA_ERROR },

  // 512 entries for 32bit mode
  /* 00 /dr */ { 0, BX_IA_ADD_EbGbR },
  /* 01 /dr */ { 0, BX_IA_ADD_EdGdR },
  /* 02 /dr */ { 0, BX_IA_ADD_GbEbR },
  /* 03 /dr */ { 0, BX_IA_ADD_GdEdR },
  /* 04 /dr */ { BxImmediate_Ib, BX_IA_ADD_ALIb },
  /* 05 /dr */ { BxImmediate_Id, BX_IA_ADD_EAXId },
  /* 06 /dr */ { 0, BX_IA_PUSH32_ES },
  /* 07 /dr */ { 0, BX_IA_POP32_ES },
  /* 08 /dr */ { 0, BX_IA_OR_EbGbR },
  /* 09 /dr */ { 0, BX_IA_OR_EdGdR },
  /* 0A /dr */ { 0, BX_IA_OR_GbEbR },
  /* 0B /dr */ { 0, BX_IA_OR_GdEdR },
  /* 0C /dr */ { BxImmediate_Ib, BX_IA_OR_ALIb },
  /* 0D /dr */ { BxImmediate_Id, BX_IA_OR_EAXId },
  /* 0E /dr */ { 0, BX_IA_PUSH32_CS },
  /* 0F /dr */ { 0, BX_IA_ERROR }, // 2-byte escape
  /* 10 /dr */ { 0, BX_IA_ADC_EbGbR },
  /* 11 /dr */ { 0, BX_IA_ADC_EdGdR },
  /* 12 /dr */ { 0, BX_IA_ADC_GbEbR },
  /* 13 /dr */ { 0, BX_IA_ADC_GdEdR },
  /* 14 /dr */ { BxImmediate_Ib, BX_IA_ADC_ALIb },
  /* 15 /dr */ { BxImmediate_Id, BX_IA_ADC_EAXId },
  /* 16 /dr */ { 0, BX_IA_PUSH32_SS },
  /* 17 /dr */ { BxTraceEnd, BX_IA_POP32_SS }, // async_event = 1
  /* 18 /dr */ { 0, BX_IA_SBB_EbGbR },
  /* 19 /dr */ { 0, BX_IA_SBB_EdGdR },
  /* 1A /dr */ { 0, BX_IA_SBB_GbEbR },
  /* 1B /dr */ { 0, BX_IA_SBB_GdEdR },
  /* 1C /dr */ { BxImmediate_Ib, BX_IA_SBB_ALIb },
  /* 1D /dr */ { BxImmediate_Id, BX_IA_SBB_EAXId },
  /* 1E /dr */ { 0, BX_IA_PUSH32_DS },
  /* 1F /dr */ { 0, BX_IA_POP32_DS },
  /* 20 /dr */ { 0, BX_IA_AND_EbGbR },
  /* 21 /dr */ { 0, BX_IA_AND_EdGdR },
  /* 22 /dr */ { 0, BX_IA_AND_GbEbR },
  /* 23 /dr */ { 0, BX_IA_AND_GdEdR },
  /* 24 /dr */ { BxImmediate_Ib, BX_IA_AND_ALIb },
  /* 25 /dr */ { BxImmediate_Id, BX_IA_AND_EAXId },
  /* 26 /dr */ { 0, BX_IA_ERROR }, // ES:
  /* 27 /dr */ { 0, BX_IA_DAA },
  /* 28 /dr */ { 0, BX_IA_SUB_EbGbR },
  /* 29 /dr */ { 0, BX_IA_SUB_EdGdR },
  /* 2A /dr */ { 0, BX_IA_SUB_GbEbR },
  /* 2B /dr */ { 0, BX_IA_SUB_GdEdR },
  /* 2C /dr */ { BxImmediate_Ib, BX_IA_SUB_ALIb },
  /* 2D /dr */ { BxImmediate_Id, BX_IA_SUB_EAXId },
  /* 2E /dr */ { 0, BX_IA_ERROR }, // CS:
  /* 2F /dr */ { 0, BX_IA_DAS },
  /* 30 /dr */ { 0, BX_IA_XOR_EbGbR },
  /* 31 /dr */ { 0, BX_IA_XOR_EdGdR },
  /* 32 /dr */ { 0, BX_IA_XOR_GbEbR },
  /* 33 /dr */ { 0, BX_IA_XOR_GdEdR },
  /* 34 /dr */ { BxImmediate_Ib, BX_IA_XOR_ALIb },
  /* 35 /dr */ { BxImmediate_Id, BX_IA_XOR_EAXId },
  /* 36 /dr */ { 0, BX_IA_ERROR }, // SS:
  /* 37 /dr */ { 0, BX_IA_AAA },
  /* 38 /dr */ { 0, BX_IA_CMP_EbGbR },
  /* 39 /dr */ { 0, BX_IA_CMP_EdGdR },
  /* 3A /dr */ { 0, BX_IA_CMP_GbEbR },
  /* 3B /dr */ { 0, BX_IA_CMP_GdEdR },
  /* 3C /dr */ { BxImmediate_Ib, BX_IA_CMP_ALIb },
  /* 3D /dr */ { BxImmediate_Id, BX_IA_CMP_EAXId },
  /* 3E /dr */ { 0, BX_IA_ERROR }, // DS:
  /* 3F /dr */ { 0, BX_IA_AAS },
  /* 40 /dr */ { 0, BX_IA_INC_ERX },
  /* 41 /dr */ { 0, BX_IA_INC_ERX },
  /* 42 /dr */ { 0, BX_IA_INC_ERX },
  /* 43 /dr */ { 0, BX_IA_INC_ERX },
  /* 44 /dr */ { 0, BX_IA_INC_ERX },
  /* 45 /dr */ { 0, BX_IA_INC_ERX },
  /* 46 /dr */ { 0, BX_IA_INC_ERX },
  /* 47 /dr */ { 0, BX_IA_INC_ERX },
  /* 48 /dr */ { 0, BX_IA_DEC_ERX },
  /* 49 /dr */ { 0, BX_IA_DEC_ERX },
  /* 4A /dr */ { 0, BX_IA_DEC_ERX },
  /* 4B /dr */ { 0, BX_IA_DEC_ERX },
  /* 4C /dr */ { 0, BX_IA_DEC_ERX },
  /* 4D /dr */ { 0, BX_IA_DEC_ERX },
  /* 4E /dr */ { 0, BX_IA_DEC_ERX },
  /* 4F /dr */ { 0, BX_IA_DEC_ERX },
  /* 50 /dr */ { 0, BX_IA_PUSH_ERX },
  /* 51 /dr */ { 0, BX_IA_PUSH_ERX },
  /* 52 /dr */ { 0, BX_IA_PUSH_ERX },
  /* 53 /dr */ { 0, BX_IA_PUSH_ERX },
  /* 54 /dr */ { 0, BX_IA_PUSH_ERX },
  /* 55 /dr */ { 0, BX_IA_PUSH_ERX },
  /* 56 /dr */ { 0, BX_IA_PUSH_ERX },
  /* 57 /dr */ { 0, BX_IA_PUSH_ERX },
  /* 58 /dr */ { 0, BX_IA_POP_ERX },
  /* 59 /dr */ { 0, BX_IA_POP_ERX },
  /* 5A /dr */ { 0, BX_IA_POP_ERX },
  /* 5B /dr */ { 0, BX_IA_POP_ERX },
  /* 5C /dr */ { 0, BX_IA_POP_ERX },
  /* 5D /dr */ { 0, BX_IA_POP_ERX },
  /* 5E /dr */ { 0, BX_IA_POP_ERX },
  /* 5F /dr */ { 0, BX_IA_POP_ERX },
  /* 60 /dr */ { 0, BX_IA_PUSHAD32 },
  /* 61 /dr */ { 0, BX_IA_POPAD32 },
  /* 62 /dr */ { 0, BX_IA_ERROR }, // BOUND
  /* 63 /dr */ { 0, BX_IA_ARPL_EwGw },
  /* 64 /dr */ { 0, BX_IA_ERROR }, // FS:
  /* 65 /dr */ { 0, BX_IA_ERROR }, // GS:
  /* 66 /dr */ { 0, BX_IA_ERROR }, // OS:
  /* 67 /dr */ { 0, BX_IA_ERROR }, // AS:
  /* 68 /dr */ { BxImmediate_Id, BX_IA_PUSH_Id },
  /* 69 /dr */ { BxImmediate_Id, BX_IA_IMUL_GdEdId },
  /* 6A /dr */ { BxImmediate_Ib_SE, BX_IA_PUSH_Id },
  /* 6B /dr */ { BxImmediate_Ib_SE, BX_IA_IMUL_GdEdId },
  /* 6C /dr */ { 0, BX_IA_REP_INSB_YbDX },
  /* 6D /dr */ { 0, BX_IA_REP_INSD_YdDX },
  /* 6E /dr */ { 0, BX_IA_REP_OUTSB_DXXb },
  /* 6F /dr */ { 0, BX_IA_REP_OUTSD_DXXd },
  /* 70 /dr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JO_Jd },
  /* 71 /dr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNO_Jd },
  /* 72 /dr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JB_Jd },
  /* 73 /dr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNB_Jd },
  /* 74 /dr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JZ_Jd },
  /* 75 /dr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNZ_Jd },
  /* 76 /dr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JBE_Jd },
  /* 77 /dr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNBE_Jd },
  /* 78 /dr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JS_Jd },
  /* 79 /dr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNS_Jd },
  /* 7A /dr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JP_Jd },
  /* 7B /dr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNP_Jd },
  /* 7C /dr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JL_Jd },
  /* 7D /dr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNL_Jd },
  /* 7E /dr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JLE_Jd },
  /* 7F /dr */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNLE_Jd },
  /* 80 /dr */ { BxGroup1 | BxImmediate_Ib, BX_IA_ERROR, BxOpcodeInfoG1EbIbR },
  /* 81 /dr */ { BxGroup1 | BxImmediate_Id, BX_IA_ERROR, BxOpcodeInfoG1EdR },
  /* 82 /dr */ { BxGroup1 | BxImmediate_Ib, BX_IA_ERROR, BxOpcodeInfoG1EbIbR },
  /* 83 /dr */ { BxGroup1 | BxImmediate_Ib_SE, BX_IA_ERROR, BxOpcodeInfoG1EdR },
  /* 84 /dr */ { 0, BX_IA_TEST_EbGbR },
  /* 85 /dr */ { 0, BX_IA_TEST_EdGdR },
  /* 86 /dr */ { 0, BX_IA_XCHG_EbGbR },
  /* 87 /dr */ { 0, BX_IA_XCHG_EdGdR },
  /* 88 /dr */ { 0, BX_IA_MOV_EbGbR },
  /* 89 /dr */ { 0, BX_IA_MOV_EdGdR },
  /* 8A /dr */ { 0, BX_IA_MOV_GbEbR },
  /* 8B /dr */ { 0, BX_IA_MOV_GdEdR },
  /* 8C /dr */ { 0, BX_IA_MOV_EwSwR },
  /* 8D /dr */ { 0, BX_IA_ERROR }, // LEA
  /* 8E /dr */ { 0, BX_IA_MOV_SwEw },
  /* 8F /dr */ { BxGroup1A, BX_IA_ERROR, BxOpcodeInfoG1AEdR },
  /* 90 /dr */ { 0, BX_IA_NOP },
  /* 91 /dr */ { 0, BX_IA_XCHG_ERXEAX },
  /* 92 /dr */ { 0, BX_IA_XCHG_ERXEAX },
  /* 93 /dr */ { 0, BX_IA_XCHG_ERXEAX },
  /* 94 /dr */ { 0, BX_IA_XCHG_ERXEAX },
  /* 95 /dr */ { 0, BX_IA_XCHG_ERXEAX },
  /* 96 /dr */ { 0, BX_IA_XCHG_ERXEAX },
  /* 97 /dr */ { 0, BX_IA_XCHG_ERXEAX },
  /* 98 /dr */ { 0, BX_IA_CWDE },
  /* 99 /dr */ { 0, BX_IA_CDQ },
  /* 9A /dr */ { BxImmediate_IvIw | BxTraceEnd, BX_IA_CALL32_Ap },
  /* 9B /dr */ { 0, BX_IA_FWAIT },
  /* 9C /dr */ { 0, BX_IA_PUSHF_Fd },
  /* 9D /dr */ { 0, BX_IA_POPF_Fd },
  /* 9E /dr */ { 0, BX_IA_SAHF },
  /* 9F /dr */ { 0, BX_IA_LAHF },
  /* A0 /dr */ { BxImmediate_O, BX_IA_MOV_ALOd },
  /* A1 /dr */ { BxImmediate_O, BX_IA_MOV_EAXOd },
  /* A2 /dr */ { BxImmediate_O, BX_IA_MOV_OdAL },
  /* A3 /dr */ { BxImmediate_O, BX_IA_MOV_OdEAX },
  /* A4 /dr */ { 0, BX_IA_REP_MOVSB_XbYb },
  /* A5 /dr */ { 0, BX_IA_REP_MOVSD_XdYd },
  /* A6 /dr */ { 0, BX_IA_REP_CMPSB_XbYb },
  /* A7 /dr */ { 0, BX_IA_REP_CMPSD_XdYd },
  /* A8 /dr */ { BxImmediate_Ib, BX_IA_TEST_ALIb },
  /* A9 /dr */ { BxImmediate_Id, BX_IA_TEST_EAXId },
  /* AA /dr */ { 0, BX_IA_REP_STOSB_YbAL },
  /* AB /dr */ { 0, BX_IA_REP_STOSD_YdEAX },
  /* AC /dr */ { 0, BX_IA_REP_LODSB_ALXb },
  /* AD /dr */ { 0, BX_IA_REP_LODSD_EAXXd },
  /* AE /dr */ { 0, BX_IA_REP_SCASB_ALXb  },
  /* AF /dr */ { 0, BX_IA_REP_SCASD_EAXXd },
  /* B0 /dr */ { BxImmediate_Ib, BX_IA_MOV_RLIb },
  /* B1 /dr */ { BxImmediate_Ib, BX_IA_MOV_RLIb },
  /* B2 /dr */ { BxImmediate_Ib, BX_IA_MOV_RLIb },
  /* B3 /dr */ { BxImmediate_Ib, BX_IA_MOV_RLIb },
  /* B4 /dr */ { BxImmediate_Ib, BX_IA_MOV_RHIb },
  /* B5 /dr */ { BxImmediate_Ib, BX_IA_MOV_RHIb },
  /* B6 /dr */ { BxImmediate_Ib, BX_IA_MOV_RHIb },
  /* B7 /dr */ { BxImmediate_Ib, BX_IA_MOV_RHIb },
  /* B8 /dr */ { BxImmediate_Id, BX_IA_MOV_ERXId },
  /* B9 /dr */ { BxImmediate_Id, BX_IA_MOV_ERXId },
  /* BA /dr */ { BxImmediate_Id, BX_IA_MOV_ERXId },
  /* BB /dr */ { BxImmediate_Id, BX_IA_MOV_ERXId },
  /* BC /dr */ { BxImmediate_Id, BX_IA_MOV_ERXId },
  /* BD /dr */ { BxImmediate_Id, BX_IA_MOV_ERXId },
  /* BE /dr */ { BxImmediate_Id, BX_IA_MOV_ERXId },
  /* BF /dr */ { BxImmediate_Id, BX_IA_MOV_ERXId },
  /* C0 /dr */ { BxGroup2 | BxImmediate_Ib, BX_IA_ERROR, BxOpcodeInfoG2Eb },
  /* C1 /dr */ { BxGroup2 | BxImmediate_Ib, BX_IA_ERROR, BxOpcodeInfoG2EdR },
  /* C2 /dr */ { BxImmediate_Iw | BxTraceEnd, BX_IA_RETnear32_Iw },
  /* C3 /dr */ { BxTraceEnd,                  BX_IA_RETnear32 },
  /* C4 /dr */ { 0, BX_IA_ERROR }, // LES
  /* C5 /dr */ { 0, BX_IA_ERROR }, // LDS
  /* C6 /dr */ { BxGroup11, BX_IA_ERROR, BxOpcodeInfoG11EbR },
  /* C7 /dr */ { BxGroup11, BX_IA_ERROR, BxOpcodeInfoG11EdR },
  /* C8 /dr */ { BxImmediate_IwIb, BX_IA_ENTER32_IwIb },
  /* C9 /dr */ { 0, BX_IA_LEAVE },
  /* CA /dr */ { BxImmediate_Iw | BxTraceEnd, BX_IA_RETfar32_Iw },
  /* CB /dr */ { BxTraceEnd,                  BX_IA_RETfar32 },
  /* CC /dr */ { BxTraceEnd, BX_IA_INT3 },
  /* CD /dr */ { BxImmediate_Ib | BxTraceEnd, BX_IA_INT_Ib },
  /* CE /dr */ { BxTraceEnd, BX_IA_INTO },
  /* CF /dr */ { BxTraceEnd, BX_IA_IRET32 },
  /* D0 /dr */ { BxGroup2 | BxImmediate_I1, BX_IA_ERROR, BxOpcodeInfoG2Eb },
  /* D1 /dr */ { BxGroup2 | BxImmediate_I1, BX_IA_ERROR, BxOpcodeInfoG2EdR },
  /* D2 /dr */ { BxGroup2, BX_IA_ERROR, BxOpcodeInfoG2Eb },
  /* D3 /dr */ { BxGroup2, BX_IA_ERROR, BxOpcodeInfoG2EdR },
  /* D4 /dr */ { BxImmediate_Ib, BX_IA_AAM },
  /* D5 /dr */ { BxImmediate_Ib, BX_IA_AAD },
  /* D6 /dr */ { 0, BX_IA_SALC },
  /* D7 /dr */ { 0, BX_IA_XLAT },
#if BX_SUPPORT_FPU
  /* D8 /dr */ { BxFPEscape, BX_IA_ERROR, BxOpcodeInfo_FloatingPoint },
  /* D9 /dr */ { BxFPEscape, BX_IA_ERROR, BxOpcodeInfo_FloatingPoint },
  /* DA /dr */ { BxFPEscape, BX_IA_ERROR, BxOpcodeInfo_FloatingPoint },
  /* DB /dr */ { BxFPEscape, BX_IA_ERROR, BxOpcodeInfo_FloatingPoint },
  /* DC /dr */ { BxFPEscape, BX_IA_ERROR, BxOpcodeInfo_FloatingPoint },
  /* DD /dr */ { BxFPEscape, BX_IA_ERROR, BxOpcodeInfo_FloatingPoint },
  /* DE /dr */ { BxFPEscape, BX_IA_ERROR, BxOpcodeInfo_FloatingPoint },
  /* DF /dr */ { BxFPEscape, BX_IA_ERROR, BxOpcodeInfo_FloatingPoint },
#else
  /* D8 /dr */ { 0, BX_IA_FPU_ESC },
  /* D9 /dr */ { 0, BX_IA_FPU_ESC },
  /* DA /dr */ { 0, BX_IA_FPU_ESC },
  /* DB /dr */ { 0, BX_IA_FPU_ESC },
  /* DC /dr */ { 0, BX_IA_FPU_ESC },
  /* DD /dr */ { 0, BX_IA_FPU_ESC },
  /* DE /dr */ { 0, BX_IA_FPU_ESC },
  /* DF /dr */ { 0, BX_IA_FPU_ESC },
#endif
  /* E0 /dr */ { BxImmediate_BrOff8 | BxTraceEnd, BX_IA_LOOPNE_Jb },
  /* E1 /dr */ { BxImmediate_BrOff8 | BxTraceEnd, BX_IA_LOOPE_Jb },
  /* E2 /dr */ { BxImmediate_BrOff8 | BxTraceEnd, BX_IA_LOOP_Jb },
  /* E3 /dr */ { BxImmediate_BrOff8 | BxTraceEnd, BX_IA_JCXZ_Jb },
  /* E4 /dr */ { BxImmediate_Ib, BX_IA_IN_ALIb },
  /* E5 /dr */ { BxImmediate_Ib, BX_IA_IN_EAXIb },
  /* E6 /dr */ { BxImmediate_Ib, BX_IA_OUT_IbAL },
  /* E7 /dr */ { BxImmediate_Ib, BX_IA_OUT_IbEAX },
  /* E8 /dr */ { BxImmediate_BrOff32 | BxTraceEnd, BX_IA_CALL_Jd },
  /* E9 /dr */ { BxImmediate_BrOff32 | BxTraceEnd, BX_IA_JMP_Jd },
  /* EA /dr */ { BxImmediate_IvIw | BxTraceEnd, BX_IA_JMP_Ap },
  /* EB /dr */ { BxImmediate_BrOff8 | BxTraceEnd, BX_IA_JMP_Jd },
  /* EC /dr */ { 0, BX_IA_IN_ALDX },
  /* ED /dr */ { 0, BX_IA_IN_EAXDX },
  /* EE /dr */ { 0, BX_IA_OUT_DXAL },
  /* EF /dr */ { 0, BX_IA_OUT_DXEAX },
  /* F0 /dr */ { 0, BX_IA_ERROR }, // LOCK:
  /* F1 /dr */ { BxTraceEnd, BX_IA_INT1 },
  /* F2 /dr */ { 0, BX_IA_ERROR }, // REPNE/REPNZ
  /* F3 /dr */ { 0, BX_IA_ERROR }, // REP,REPE/REPZ
  /* F4 /dr */ { BxTraceEnd, BX_IA_HLT },
  /* F5 /dr */ { 0, BX_IA_CMC },
  /* F6 /dr */ { BxGroup3, BX_IA_ERROR, BxOpcodeInfoG3EbR },
  /* F7 /dr */ { BxGroup3, BX_IA_ERROR, BxOpcodeInfoG3EdR },
  /* F8 /dr */ { 0, BX_IA_CLC },
  /* F9 /dr */ { 0, BX_IA_STC },
  /* FA /dr */ { 0, BX_IA_CLI },
  /* FB /dr */ { 0, BX_IA_STI },
  /* FC /dr */ { 0, BX_IA_CLD },
  /* FD /dr */ { 0, BX_IA_STD },
  /* FE /dr */ { BxGroup5, BX_IA_ERROR, BxOpcodeInfoG4R },
  /* FF /dr */ { BxGroup5, BX_IA_ERROR, BxOpcodeInfoG5dR },

  /* 0F 00 /dr */ { BxGroup6, BX_IA_ERROR, BxOpcodeInfoG6 },
  /* 0F 01 /dr */ { BxGroup7, BX_IA_ERROR, BxOpcodeInfoG7R },
  /* 0F 02 /dr */ { 0, BX_IA_LAR_GvEw },
  /* 0F 03 /dr */ { 0, BX_IA_LSL_GvEw },
  /* 0F 04 /dr */ { 0, BX_IA_ERROR },
#if BX_SUPPORT_X86_64
  /* 0F 05 /dr */ { BxTraceEnd, BX_IA_SYSCALL },
#elif BX_CPU_LEVEL == 2
  /* 0F 05 /dr */ { BxTraceEnd, BX_IA_LOADALL },
#else
  /* 0F 05 /dr */ { 0, BX_IA_ERROR },
#endif
  /* 0F 06 /dr */ { 0, BX_IA_CLTS },
#if BX_SUPPORT_X86_64
  /* 0F 07 /dr */ { BxTraceEnd, BX_IA_SYSRET },
#else
  /* 0F 07 /dr */ { 0, BX_IA_ERROR },
#endif
  /* 0F 08 /dr */ { BxTraceEnd, BX_IA_INVD },
  /* 0F 09 /dr */ { BxTraceEnd, BX_IA_WBINVD },
  /* 0F 0A /dr */ { 0, BX_IA_ERROR },
  /* 0F 0B /dr */ { BxTraceEnd, BX_IA_UD2A },
  /* 0F 0C /dr */ { 0, BX_IA_ERROR },
#if BX_SUPPORT_X86_64 || BX_SUPPORT_3DNOW
  /* 0F 0D /dr */ { 0, BX_IA_NOP },             // 3DNow! PREFETCH on AMD, NOP on Intel
#else
  /* 0F 0D /dr */ { 0, BX_IA_ERROR },
#endif
  /* 0F 0E /dr */ { 0, BX_IA_FEMMS },           // 3DNow! FEMMS
#if BX_SUPPORT_3DNOW
  /* 0F 0F /dr */ { BxImmediate_Ib, BX_IA_ERROR, Bx3DNowOpcodeInfo },
#else
  /* 0F 0F /dr */ { 0, BX_IA_ERROR },
#endif
  /* 0F 10 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f10 },
  /* 0F 11 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f11 },
  /* 0F 12 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f12 },
  /* 0F 13 /dr */ { 0, BX_IA_ERROR },  // MOVLPS/PD SSE group
  /* 0F 14 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f14 },
  /* 0F 15 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f15 },
  /* 0F 16 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f16 },
  /* 0F 17 /dr */ { 0, BX_IA_ERROR },  // MOHLPS/PD SSE group
#if BX_CPU_LEVEL >= 6
  /* 0F 18 /dr */ { 0, BX_IA_NOP },    // PREFETCH HINT
  /* 0F 19 /dr */ { 0, BX_IA_NOP },    // multi-byte NOP
  /* 0F 1A /dr */ { 0, BX_IA_NOP },    // multi-byte NOP
  /* 0F 1B /dr */ { 0, BX_IA_NOP },    // multi-byte NOP
  /* 0F 1C /dr */ { 0, BX_IA_NOP },    // multi-byte NOP
  /* 0F 1D /dr */ { 0, BX_IA_NOP },    // multi-byte NOP
  /* 0F 1E /dr */ { 0, BX_IA_NOP },    // multi-byte NOP
  /* 0F 1F /dr */ { 0, BX_IA_NOP },    // multi-byte NOP
#else
  /* 0F 18 /dr */ { 0, BX_IA_ERROR },
  /* 0F 19 /dr */ { 0, BX_IA_ERROR },
  /* 0F 1A /dr */ { 0, BX_IA_ERROR },
  /* 0F 1B /dr */ { 0, BX_IA_ERROR },
  /* 0F 1C /dr */ { 0, BX_IA_ERROR },
  /* 0F 1D /dr */ { 0, BX_IA_ERROR },
  /* 0F 1E /dr */ { 0, BX_IA_ERROR },
  /* 0F 1F /dr */ { 0, BX_IA_ERROR },
#endif
  /* 0F 20 /dr */ { 0, BX_IA_MOV_RdCd },
  /* 0F 21 /dr */ { 0, BX_IA_MOV_RdDd },
  /* 0F 22 /dr */ { BxTraceEnd, BX_IA_MOV_CdRd },
  /* 0F 23 /dr */ { BxTraceEnd, BX_IA_MOV_DdRd },
  /* 0F 24 /dr */ { BxTraceEnd, BX_IA_MOV_RdTd }, // not implemented
  /* 0F 25 /dr */ { 0, BX_IA_ERROR },
  /* 0F 26 /dr */ { BxTraceEnd, BX_IA_MOV_TdRd }, // not implemented
  /* 0F 27 /dr */ { 0, BX_IA_ERROR },
  /* 0F 28 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f28 },
  /* 0F 29 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f29 },
  /* 0F 2A /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2a },
  /* 0F 2B /dr */ { 0, BX_IA_ERROR }, // MOVNTPS/PD/SS/SD
  /* 0F 2C /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2c },
  /* 0F 2D /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2d },
  /* 0F 2E /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2e },
  /* 0F 2F /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2f },
  /* 0F 30 /dr */ { 0, BX_IA_WRMSR },
  /* 0F 31 /dr */ { 0, BX_IA_RDTSC },
  /* 0F 32 /dr */ { 0, BX_IA_RDMSR },
  /* 0F 33 /dr */ { 0, BX_IA_RDPMC },
  /* 0F 34 /dr */ { BxTraceEnd, BX_IA_SYSENTER },
  /* 0F 35 /dr */ { BxTraceEnd, BX_IA_SYSEXIT },
  /* 0F 36 /dr */ { 0, BX_IA_ERROR },
  /* 0F 37 /dr */ { 0, BX_IA_ERROR },
#if (BX_SUPPORT_SSE >= 4) || (BX_SUPPORT_SSE >= 3 && BX_SUPPORT_SSE_EXTENSION > 0)
  /* 0F 38 /dr */ { Bx3ByteOp, BX_IA_ERROR, BxOpcode3ByteTable0f38 }, // 3-byte escape
#else
  /* 0F 38 /dr */ { 0, BX_IA_ERROR },
#endif
  /* 0F 39 /dr */ { 0, BX_IA_ERROR },
#if (BX_SUPPORT_SSE >= 4) || (BX_SUPPORT_SSE >= 3 && BX_SUPPORT_SSE_EXTENSION > 0)
  /* 0F 3A /dr */ { Bx3ByteOp, BX_IA_ERROR, BxOpcode3ByteTable0f3a }, // 3-byte escape
#else
  /* 0F 3A /dr */ { 0, BX_IA_ERROR },
#endif
  /* 0F 3B /dr */ { 0, BX_IA_ERROR },
  /* 0F 3C /dr */ { 0, BX_IA_ERROR },
  /* 0F 3D /dr */ { 0, BX_IA_ERROR },
  /* 0F 3E /dr */ { 0, BX_IA_ERROR },
  /* 0F 3F /dr */ { 0, BX_IA_ERROR },
  /* 0F 40 /dr */ { 0, BX_IA_CMOVO_GdEdR },
  /* 0F 41 /dr */ { 0, BX_IA_CMOVNO_GdEdR },
  /* 0F 42 /dr */ { 0, BX_IA_CMOVB_GdEdR },
  /* 0F 43 /dr */ { 0, BX_IA_CMOVNB_GdEdR },
  /* 0F 44 /dr */ { 0, BX_IA_CMOVZ_GdEdR },
  /* 0F 45 /dr */ { 0, BX_IA_CMOVNZ_GdEdR },
  /* 0F 46 /dr */ { 0, BX_IA_CMOVBE_GdEdR },
  /* 0F 47 /dr */ { 0, BX_IA_CMOVNBE_GdEdR },
  /* 0F 48 /dr */ { 0, BX_IA_CMOVS_GdEdR },
  /* 0F 49 /dr */ { 0, BX_IA_CMOVNS_GdEdR },
  /* 0F 4A /dr */ { 0, BX_IA_CMOVP_GdEdR },
  /* 0F 4B /dr */ { 0, BX_IA_CMOVNP_GdEdR },
  /* 0F 4C /dr */ { 0, BX_IA_CMOVL_GdEdR },
  /* 0F 4D /dr */ { 0, BX_IA_CMOVNL_GdEdR },
  /* 0F 4E /dr */ { 0, BX_IA_CMOVLE_GdEdR },
  /* 0F 4F /dr */ { 0, BX_IA_CMOVNLE_GdEdR },
  /* 0F 50 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f50 },
  /* 0F 51 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f51 },
  /* 0F 52 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f52 },
  /* 0F 53 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f53 },
  /* 0F 54 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f54 },
  /* 0F 55 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f55 },
  /* 0F 56 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f56 },
  /* 0F 57 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f57 },
  /* 0F 58 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f58 },
  /* 0F 59 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f59 },
  /* 0F 5A /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5a },
  /* 0F 5B /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5b },
  /* 0F 5C /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5c },
  /* 0F 5D /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5d },
  /* 0F 5E /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5e },
  /* 0F 5F /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5f },
  /* 0F 60 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f60 },
  /* 0F 61 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f61 },
  /* 0F 62 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f62 },
  /* 0F 63 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f63 },
  /* 0F 64 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f64 },
  /* 0F 65 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f65 },
  /* 0F 66 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f66 },
  /* 0F 67 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f67 },
  /* 0F 68 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f68 },
  /* 0F 69 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f69 },
  /* 0F 6A /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6a },
  /* 0F 6B /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6b },
  /* 0F 6C /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6c },
  /* 0F 6D /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6d },
  /* 0F 6E /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6e },
  /* 0F 6F /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6f },
  /* 0F 70 /dr */ { BxImmediate_Ib | BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f70 },
  /* 0F 71 /dr */ { BxGroup12, BX_IA_ERROR, BxOpcodeInfoG12R },
  /* 0F 72 /dr */ { BxGroup13, BX_IA_ERROR, BxOpcodeInfoG13R },
  /* 0F 73 /dr */ { BxGroup14, BX_IA_ERROR, BxOpcodeInfoG14R },
  /* 0F 74 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f74 },
  /* 0F 75 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f75 },
  /* 0F 76 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f76 },
  /* 0F 77 /dr */ { 0, BX_IA_EMMS },
  /* 0F 78 /dr */ { 0, BX_IA_ERROR },
  /* 0F 79 /dr */ { 0, BX_IA_ERROR },
  /* 0F 7A /dr */ { 0, BX_IA_ERROR },
  /* 0F 7B /dr */ { 0, BX_IA_ERROR },
  /* 0F 7C /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f7c },
  /* 0F 7D /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f7d },
  /* 0F 7E /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f7e },
  /* 0F 7F /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f7f },
  /* 0F 80 /dr */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JO_Jd },
  /* 0F 81 /dr */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JNO_Jd },
  /* 0F 82 /dr */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JB_Jd },
  /* 0F 83 /dr */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JNB_Jd },
  /* 0F 84 /dr */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JZ_Jd },
  /* 0F 85 /dr */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JNZ_Jd },
  /* 0F 86 /dr */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JBE_Jd },
  /* 0F 87 /dr */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JNBE_Jd },
  /* 0F 88 /dr */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JS_Jd },
  /* 0F 89 /dr */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JNS_Jd },
  /* 0F 8A /dr */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JP_Jd },
  /* 0F 8B /dr */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JNP_Jd },
  /* 0F 8C /dr */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JL_Jd },
  /* 0F 8D /dr */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JNL_Jd },
  /* 0F 8E /dr */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JLE_Jd },
  /* 0F 8F /dr */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JNLE_Jd },
  /* 0F 90 /dr */ { 0, BX_IA_SETO_EbR },
  /* 0F 91 /dr */ { 0, BX_IA_SETNO_EbR },
  /* 0F 92 /dr */ { 0, BX_IA_SETB_EbR },
  /* 0F 93 /dr */ { 0, BX_IA_SETNB_EbR },
  /* 0F 94 /dr */ { 0, BX_IA_SETZ_EbR },
  /* 0F 95 /dr */ { 0, BX_IA_SETNZ_EbR },
  /* 0F 96 /dr */ { 0, BX_IA_SETBE_EbR },
  /* 0F 97 /dr */ { 0, BX_IA_SETNBE_EbR },
  /* 0F 98 /dr */ { 0, BX_IA_SETS_EbR },
  /* 0F 99 /dr */ { 0, BX_IA_SETNS_EbR },
  /* 0F 9A /dr */ { 0, BX_IA_SETP_EbR },
  /* 0F 9B /dr */ { 0, BX_IA_SETNP_EbR },
  /* 0F 9C /dr */ { 0, BX_IA_SETL_EbR },
  /* 0F 9D /dr */ { 0, BX_IA_SETNL_EbR },
  /* 0F 9E /dr */ { 0, BX_IA_SETLE_EbR },
  /* 0F 9F /dr */ { 0, BX_IA_SETNLE_EbR },
  /* 0F A0 /dr */ { 0, BX_IA_PUSH32_FS },
  /* 0F A1 /dr */ { 0, BX_IA_POP32_FS },
  /* 0F A2 /dr */ { 0, BX_IA_CPUID },
  /* 0F A3 /dr */ { 0, BX_IA_BT_EdGdR },
  /* 0F A4 /dr */ { BxImmediate_Ib, BX_IA_SHLD_EdGdR },
  /* 0F A5 /dr */ { 0,              BX_IA_SHLD_EdGdR },
  /* 0F A6 /dr */ { BxTraceEnd, BX_IA_CMPXCHG_XBTS }, // not implemented
  /* 0F A7 /dr */ { BxTraceEnd, BX_IA_CMPXCHG_IBTS }, // not implemented
  /* 0F A8 /dr */ { 0, BX_IA_PUSH32_GS },
  /* 0F A9 /dr */ { 0, BX_IA_POP32_GS },
  /* 0F AA /dr */ { BxTraceEnd, BX_IA_RSM },
  /* 0F AB /dr */ { 0, BX_IA_BTS_EdGdR },
  /* 0F AC /dr */ { BxImmediate_Ib, BX_IA_SHRD_EdGdR },
  /* 0F AD /dr */ { 0,              BX_IA_SHRD_EdGdR },
  /* 0F AE /dr */ { BxGroup15, BX_IA_ERROR, BxOpcodeInfoG15R },
  /* 0F AF /dr */ { 0, BX_IA_IMUL_GdEd },
  /* 0F B0 /dr */ { 0, BX_IA_CMPXCHG_EbGbR },
  /* 0F B1 /dr */ { 0, BX_IA_CMPXCHG_EdGdR },
  /* 0F B2 /dr */ { 0, BX_IA_ERROR }, // LSS
  /* 0F B3 /dr */ { 0, BX_IA_BTR_EdGdR },
  /* 0F B4 /dr */ { 0, BX_IA_ERROR }, // LFS
  /* 0F B5 /dr */ { 0, BX_IA_ERROR }, // LGS
  /* 0F B6 /dr */ { 0, BX_IA_MOVZX_GdEbR },
  /* 0F B7 /dr */ { 0, BX_IA_MOVZX_GdEwR },
  /* 0F B8 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fb8d },
  /* 0F B9 /dr */ { BxTraceEnd, BX_IA_UD2B },
  /* 0F BA /dr */ { BxGroup8, BX_IA_ERROR, BxOpcodeInfoG8EdIbR },
  /* 0F BB /dr */ { 0, BX_IA_BTC_EdGdR },
  /* 0F BC /dr */ { 0, BX_IA_BSF_GdEd },
  /* 0F BD /dr */ { 0, BX_IA_BSR_GdEd },
  /* 0F BE /dr */ { 0, BX_IA_MOVSX_GdEbR },
  /* 0F BF /dr */ { 0, BX_IA_MOVSX_GdEwR },
  /* 0F C0 /dr */ { 0, BX_IA_XADD_EbGbR },
  /* 0F C1 /dr */ { 0, BX_IA_XADD_EdGdR },
  /* 0F C2 /dr */ { BxImmediate_Ib | BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fc2 },
  /* 0F C3 /dr */ { 0, BX_IA_ERROR }, // MOVNTI SSE group
  /* 0F C4 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fc4 },
  /* 0F C5 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fc5R },
  /* 0F C6 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fc6 },
  /* 0F C7 /dr */ { 0, BX_IA_ERROR }, // CMPXCHG8B G9 group
  /* 0F C8 /dr */ { 0, BX_IA_BSWAP_ERX },
  /* 0F C9 /dr */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CA /dr */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CB /dr */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CC /dr */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CD /dr */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CE /dr */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CF /dr */ { 0, BX_IA_BSWAP_ERX },
  /* 0F D0 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd0 },
  /* 0F D1 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd1 },
  /* 0F D2 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd2 },
  /* 0F D3 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd3 },
  /* 0F D4 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd4 },
  /* 0F D5 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd5 },
  /* 0F D6 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd6 },
  /* 0F D7 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd7 },
  /* 0F D8 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd8 },
  /* 0F D9 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd9 },
  /* 0F DA /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fda },
  /* 0F DB /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fdb },
  /* 0F DC /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fdc },
  /* 0F DD /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fdd },
  /* 0F DE /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fde },
  /* 0F DF /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fdf },
  /* 0F E0 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe0 },
  /* 0F E1 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe1 },
  /* 0F E2 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe2 },
  /* 0F E3 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe3 },
  /* 0F E4 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe4 },
  /* 0F E5 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe5 },
  /* 0F E6 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe6 },
  /* 0F E7 /dr */ { 0, BX_IA_ERROR }, // MOVNTQ/MOVNTDQ SSE group
  /* 0F E8 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe8 },
  /* 0F E9 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe9 },
  /* 0F EA /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fea },
  /* 0F EB /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0feb },
  /* 0F EC /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fec },
  /* 0F ED /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fed },
  /* 0F EE /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fee },
  /* 0F EF /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fef },
  /* 0F F0 /dr */ { 0, BX_IA_ERROR }, // LDDQU SSE group
  /* 0F F1 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff1 },
  /* 0F F2 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff2 },
  /* 0F F3 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff3 },
  /* 0F F4 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff4 },
  /* 0F F5 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff5 },
  /* 0F F6 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff6 },
  /* 0F F7 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff7R },
  /* 0F F8 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff8 },
  /* 0F F9 /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff9 },
  /* 0F FA /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ffa },
  /* 0F FB /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ffb },
  /* 0F FC /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ffc },
  /* 0F FD /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ffd },
  /* 0F FE /dr */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ffe },
  /* 0F FF /dr */ { 0, BX_IA_ERROR }
};

/* ************************** */
/* 512 entries for 16bit mode */
/* 512 entries for 32bit mode */
/* ************************** */

static const BxOpcodeInfo_t BxOpcodeInfo32M[512*2] = {
  // 512 entries for 16bit mode
  /* 00 /wm */ { BxLockable, BX_IA_ADD_EbGbM },
  /* 01 /wm */ { BxLockable, BX_IA_ADD_EwGwM },
  /* 02 /wm */ { 0, BX_IA_ADD_GbEbM },
  /* 03 /wm */ { 0, BX_IA_ADD_GwEwM },
  /* 04 /wm */ { BxImmediate_Ib, BX_IA_ADD_ALIb },
  /* 05 /wm */ { BxImmediate_Iw, BX_IA_ADD_AXIw },
  /* 06 /wm */ { 0, BX_IA_PUSH16_ES },
  /* 07 /wm */ { 0, BX_IA_POP16_ES },
  /* 08 /wm */ { BxLockable, BX_IA_OR_EbGbM },
  /* 09 /wm */ { BxLockable, BX_IA_OR_EwGwM },
  /* 0A /wm */ { 0, BX_IA_OR_GbEbM },
  /* 0B /wm */ { 0, BX_IA_OR_GwEwM },
  /* 0C /wm */ { BxImmediate_Ib, BX_IA_OR_ALIb },
  /* 0D /wm */ { BxImmediate_Iw, BX_IA_OR_AXIw },
  /* 0E /wm */ { 0, BX_IA_PUSH16_CS },
  /* 0F /wm */ { 0, BX_IA_ERROR }, // 2-byte escape
  /* 10 /wm */ { BxLockable, BX_IA_ADC_EbGbM },
  /* 11 /wm */ { BxLockable, BX_IA_ADC_EwGwM },
  /* 12 /wm */ { 0, BX_IA_ADC_GbEbM },
  /* 13 /wm */ { 0, BX_IA_ADC_GwEwM },
  /* 14 /wm */ { BxImmediate_Ib, BX_IA_ADC_ALIb },
  /* 15 /wm */ { BxImmediate_Iw, BX_IA_ADC_AXIw },
  /* 16 /wm */ { 0, BX_IA_PUSH16_SS },
  /* 17 /wm */ { BxTraceEnd, BX_IA_POP16_SS }, // async_event = 1
  /* 18 /wm */ { BxLockable, BX_IA_SBB_EbGbM },
  /* 19 /wm */ { BxLockable, BX_IA_SBB_EwGwM },
  /* 1A /wm */ { 0, BX_IA_SBB_GbEbM },
  /* 1B /wm */ { 0, BX_IA_SBB_GwEwM },
  /* 1C /wm */ { BxImmediate_Ib, BX_IA_SBB_ALIb },
  /* 1D /wm */ { BxImmediate_Iw, BX_IA_SBB_AXIw },
  /* 1E /wm */ { 0, BX_IA_PUSH16_DS },
  /* 1F /wm */ { 0, BX_IA_POP16_DS },
  /* 20 /wm */ { BxLockable, BX_IA_AND_EbGbM },
  /* 21 /wm */ { BxLockable, BX_IA_AND_EwGwM },
  /* 22 /wm */ { 0, BX_IA_AND_GbEbM },
  /* 23 /wm */ { 0, BX_IA_AND_GwEwM },
  /* 24 /wm */ { BxImmediate_Ib, BX_IA_AND_ALIb },
  /* 25 /wm */ { BxImmediate_Iw, BX_IA_AND_AXIw },
  /* 26 /wm */ { 0, BX_IA_ERROR }, // ES:
  /* 27 /wm */ { 0, BX_IA_DAA },
  /* 28 /wm */ { BxLockable, BX_IA_SUB_EbGbM },
  /* 29 /wm */ { BxLockable, BX_IA_SUB_EwGwM },
  /* 2A /wm */ { 0, BX_IA_SUB_GbEbM },
  /* 2B /wm */ { 0, BX_IA_SUB_GwEwM },
  /* 2C /wm */ { BxImmediate_Ib, BX_IA_SUB_ALIb },
  /* 2D /wm */ { BxImmediate_Iw, BX_IA_SUB_AXIw },
  /* 2E /wm */ { 0, BX_IA_ERROR }, // CS:
  /* 2F /wm */ { 0, BX_IA_DAS },
  /* 30 /wm */ { BxLockable, BX_IA_XOR_EbGbM },
  /* 31 /wm */ { BxLockable, BX_IA_XOR_EwGwM },
  /* 32 /wm */ { 0, BX_IA_XOR_GbEbM },
  /* 33 /wm */ { 0, BX_IA_XOR_GwEwM },
  /* 34 /wm */ { BxImmediate_Ib, BX_IA_XOR_ALIb },
  /* 35 /wm */ { BxImmediate_Iw, BX_IA_XOR_AXIw },
  /* 36 /wm */ { 0, BX_IA_ERROR }, // SS:
  /* 37 /wm */ { 0, BX_IA_AAA },
  /* 38 /wm */ { 0, BX_IA_CMP_EbGbM },
  /* 39 /wm */ { 0, BX_IA_CMP_EwGwM },
  /* 3A /wm */ { 0, BX_IA_CMP_GbEbM },
  /* 3B /wm */ { 0, BX_IA_CMP_GwEwM },
  /* 3C /wm */ { BxImmediate_Ib, BX_IA_CMP_ALIb },
  /* 3D /wm */ { BxImmediate_Iw, BX_IA_CMP_AXIw },
  /* 3E /wm */ { 0, BX_IA_ERROR }, // DS:
  /* 3F /wm */ { 0, BX_IA_AAS },
  /* 40 /wm */ { 0, BX_IA_INC_RX },
  /* 41 /wm */ { 0, BX_IA_INC_RX },
  /* 42 /wm */ { 0, BX_IA_INC_RX },
  /* 43 /wm */ { 0, BX_IA_INC_RX },
  /* 44 /wm */ { 0, BX_IA_INC_RX },
  /* 45 /wm */ { 0, BX_IA_INC_RX },
  /* 46 /wm */ { 0, BX_IA_INC_RX },
  /* 47 /wm */ { 0, BX_IA_INC_RX },
  /* 48 /wm */ { 0, BX_IA_DEC_RX },
  /* 49 /wm */ { 0, BX_IA_DEC_RX },
  /* 4A /wm */ { 0, BX_IA_DEC_RX },
  /* 4B /wm */ { 0, BX_IA_DEC_RX },
  /* 4C /wm */ { 0, BX_IA_DEC_RX },
  /* 4D /wm */ { 0, BX_IA_DEC_RX },
  /* 4E /wm */ { 0, BX_IA_DEC_RX },
  /* 4F /wm */ { 0, BX_IA_DEC_RX },
  /* 50 /wm */ { 0, BX_IA_PUSH_RX },
  /* 51 /wm */ { 0, BX_IA_PUSH_RX },
  /* 52 /wm */ { 0, BX_IA_PUSH_RX },
  /* 53 /wm */ { 0, BX_IA_PUSH_RX },
  /* 54 /wm */ { 0, BX_IA_PUSH_RX },
  /* 55 /wm */ { 0, BX_IA_PUSH_RX },
  /* 56 /wm */ { 0, BX_IA_PUSH_RX },
  /* 57 /wm */ { 0, BX_IA_PUSH_RX },
  /* 58 /wm */ { 0, BX_IA_POP_RX },
  /* 59 /wm */ { 0, BX_IA_POP_RX },
  /* 5A /wm */ { 0, BX_IA_POP_RX },
  /* 5B /wm */ { 0, BX_IA_POP_RX },
  /* 5C /wm */ { 0, BX_IA_POP_RX },
  /* 5D /wm */ { 0, BX_IA_POP_RX },
  /* 5E /wm */ { 0, BX_IA_POP_RX },
  /* 5F /wm */ { 0, BX_IA_POP_RX },
  /* 60 /wm */ { 0, BX_IA_PUSHAD16 },
  /* 61 /wm */ { 0, BX_IA_POPAD16 },
  /* 62 /wm */ { 0, BX_IA_BOUND_GwMa },
  /* 63 /wm */ { 0, BX_IA_ARPL_EwGw },
  /* 64 /wm */ { 0, BX_IA_ERROR }, // FS:
  /* 65 /wm */ { 0, BX_IA_ERROR }, // GS:
  /* 66 /wm */ { 0, BX_IA_ERROR }, // OS:
  /* 67 /wm */ { 0, BX_IA_ERROR }, // AS:
  /* 68 /wm */ { BxImmediate_Iw, BX_IA_PUSH_Iw },
  /* 69 /wm */ { BxImmediate_Iw, BX_IA_IMUL_GwEwIw },
  /* 6A /wm */ { BxImmediate_Ib_SE, BX_IA_PUSH_Iw },
  /* 6B /wm */ { BxImmediate_Ib_SE, BX_IA_IMUL_GwEwIw },
  /* 6C /wm */ { 0, BX_IA_REP_INSB_YbDX },
  /* 6D /wm */ { 0, BX_IA_REP_INSW_YwDX },
  /* 6E /wm */ { 0, BX_IA_REP_OUTSB_DXXb },
  /* 6F /wm */ { 0, BX_IA_REP_OUTSW_DXXw },
  /* 70 /wm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JO_Jw },
  /* 71 /wm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNO_Jw },
  /* 72 /wm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JB_Jw },
  /* 73 /wm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNB_Jw },
  /* 74 /wm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JZ_Jw },
  /* 75 /wm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNZ_Jw },
  /* 76 /wm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JBE_Jw },
  /* 77 /wm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNBE_Jw },
  /* 78 /wm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JS_Jw },
  /* 79 /wm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNS_Jw },
  /* 7A /wm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JP_Jw },
  /* 7B /wm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNP_Jw },
  /* 7C /wm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JL_Jw },
  /* 7D /wm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNL_Jw },
  /* 7E /wm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JLE_Jw },
  /* 7F /wm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNLE_Jw },
  /* 80 /wm */ { BxGroup1 | BxImmediate_Ib, BX_IA_ERROR, BxOpcodeInfoG1EbIbM },
  /* 81 /wm */ { BxGroup1 | BxImmediate_Iw, BX_IA_ERROR, BxOpcodeInfoG1EwM },
  /* 82 /wm */ { BxGroup1 | BxImmediate_Ib, BX_IA_ERROR, BxOpcodeInfoG1EbIbM },
  /* 83 /wm */ { BxGroup1 | BxImmediate_Ib_SE, BX_IA_ERROR, BxOpcodeInfoG1EwM },
  /* 84 /wm */ { 0, BX_IA_TEST_EbGbM },
  /* 85 /wm */ { 0, BX_IA_TEST_EwGwM },
  /* 86 /wm */ { BxLockable, BX_IA_XCHG_EbGbM },
  /* 87 /wm */ { BxLockable, BX_IA_XCHG_EwGwM },
  /* 88 /wm */ { 0, BX_IA_MOV_EbGbM },
  /* 89 /wm */ { 0, BX_IA_MOV_EwGwM },
  /* 8A /wm */ { 0, BX_IA_MOV_GbEbM },
  /* 8B /wm */ { 0, BX_IA_MOV_GwEwM },
  /* 8C /wm */ { 0, BX_IA_MOV_EwSwM },
  /* 8D /wm */ { 0, BX_IA_LEA_GwM },
  /* 8E /wm */ { 0, BX_IA_MOV_SwEw },
  /* 8F /wm */ { BxGroup1A, BX_IA_ERROR, BxOpcodeInfoG1AEwM },
  /* 90 /wm */ { 0, BX_IA_NOP },
  /* 91 /wm */ { 0, BX_IA_XCHG_RXAX },
  /* 92 /wm */ { 0, BX_IA_XCHG_RXAX },
  /* 93 /wm */ { 0, BX_IA_XCHG_RXAX },
  /* 94 /wm */ { 0, BX_IA_XCHG_RXAX },
  /* 95 /wm */ { 0, BX_IA_XCHG_RXAX },
  /* 96 /wm */ { 0, BX_IA_XCHG_RXAX },
  /* 97 /wm */ { 0, BX_IA_XCHG_RXAX },
  /* 98 /wm */ { 0, BX_IA_CBW },
  /* 99 /wm */ { 0, BX_IA_CWD },
  /* 9A /wm */ { BxImmediate_IvIw | BxTraceEnd, BX_IA_CALL16_Ap },
  /* 9B /wm */ { 0, BX_IA_FWAIT },
  /* 9C /wm */ { 0, BX_IA_PUSHF_Fw },
  /* 9D /wm */ { 0, BX_IA_POPF_Fw },
  /* 9E /wm */ { 0, BX_IA_SAHF },
  /* 9F /wm */ { 0, BX_IA_LAHF },
  /* A0 /wm */ { BxImmediate_O, BX_IA_MOV_ALOd },
  /* A1 /wm */ { BxImmediate_O, BX_IA_MOV_AXOd },
  /* A2 /wm */ { BxImmediate_O, BX_IA_MOV_OdAL },
  /* A3 /wm */ { BxImmediate_O, BX_IA_MOV_OdAX },
  /* A4 /wm */ { 0, BX_IA_REP_MOVSB_XbYb },
  /* A5 /wm */ { 0, BX_IA_REP_MOVSW_XwYw },
  /* A6 /wm */ { 0, BX_IA_REP_CMPSB_XbYb },
  /* A7 /wm */ { 0, BX_IA_REP_CMPSW_XwYw },
  /* A8 /wm */ { BxImmediate_Ib, BX_IA_TEST_ALIb },
  /* A9 /wm */ { BxImmediate_Iw, BX_IA_TEST_AXIw },
  /* AA /wm */ { 0, BX_IA_REP_STOSB_YbAL },
  /* AB /wm */ { 0, BX_IA_REP_STOSW_YwAX },
  /* AC /wm */ { 0, BX_IA_REP_LODSB_ALXb },
  /* AD /wm */ { 0, BX_IA_REP_LODSW_AXXw },
  /* AE /wm */ { 0, BX_IA_REP_SCASB_ALXb },
  /* AF /wm */ { 0, BX_IA_REP_SCASW_AXXw },
  /* B0 /wm */ { BxImmediate_Ib, BX_IA_MOV_RLIb },
  /* B1 /wm */ { BxImmediate_Ib, BX_IA_MOV_RLIb },
  /* B2 /wm */ { BxImmediate_Ib, BX_IA_MOV_RLIb },
  /* B3 /wm */ { BxImmediate_Ib, BX_IA_MOV_RLIb },
  /* B4 /wm */ { BxImmediate_Ib, BX_IA_MOV_RHIb },
  /* B5 /wm */ { BxImmediate_Ib, BX_IA_MOV_RHIb },
  /* B6 /wm */ { BxImmediate_Ib, BX_IA_MOV_RHIb },
  /* B7 /wm */ { BxImmediate_Ib, BX_IA_MOV_RHIb },
  /* B8 /wm */ { BxImmediate_Iw, BX_IA_MOV_RXIw },
  /* B9 /wm */ { BxImmediate_Iw, BX_IA_MOV_RXIw },
  /* BA /wm */ { BxImmediate_Iw, BX_IA_MOV_RXIw },
  /* BB /wm */ { BxImmediate_Iw, BX_IA_MOV_RXIw },
  /* BC /wm */ { BxImmediate_Iw, BX_IA_MOV_RXIw },
  /* BD /wm */ { BxImmediate_Iw, BX_IA_MOV_RXIw },
  /* BE /wm */ { BxImmediate_Iw, BX_IA_MOV_RXIw },
  /* BF /wm */ { BxImmediate_Iw, BX_IA_MOV_RXIw },
  /* C0 /wm */ { BxGroup2 | BxImmediate_Ib, BX_IA_ERROR, BxOpcodeInfoG2Eb },
  /* C1 /wm */ { BxGroup2 | BxImmediate_Ib, BX_IA_ERROR, BxOpcodeInfoG2Ew },
  /* C2 /wm */ { BxImmediate_Iw | BxTraceEnd, BX_IA_RETnear16_Iw },
  /* C3 /wm */ { BxTraceEnd,                  BX_IA_RETnear16 },
  /* C4 /wm */ { 0, BX_IA_LES_GwMp },
  /* C5 /wm */ { 0, BX_IA_LDS_GwMp },
  /* C6 /wm */ { BxGroup11, BX_IA_ERROR, BxOpcodeInfoG11EbM },
  /* C7 /wm */ { BxGroup11, BX_IA_ERROR, BxOpcodeInfoG11EwM },
  /* C8 /wm */ { BxImmediate_IwIb, BX_IA_ENTER16_IwIb },
  /* C9 /wm */ { 0, BX_IA_LEAVE },
  /* CA /wm */ { BxImmediate_Iw | BxTraceEnd, BX_IA_RETfar16_Iw },
  /* CB /wm */ { BxTraceEnd,                  BX_IA_RETfar16 },
  /* CC /wm */ { BxTraceEnd, BX_IA_INT3 },
  /* CD /wm */ { BxImmediate_Ib | BxTraceEnd, BX_IA_INT_Ib },
  /* CE /wm */ { BxTraceEnd, BX_IA_INTO },
  /* CF /wm */ { BxTraceEnd, BX_IA_IRET16 },
  /* D0 /wm */ { BxGroup2 | BxImmediate_I1, BX_IA_ERROR, BxOpcodeInfoG2Eb },
  /* D1 /wm */ { BxGroup2 | BxImmediate_I1, BX_IA_ERROR, BxOpcodeInfoG2Ew },
  /* D2 /wm */ { BxGroup2, BX_IA_ERROR, BxOpcodeInfoG2Eb },
  /* D3 /wm */ { BxGroup2, BX_IA_ERROR, BxOpcodeInfoG2Ew },
  /* D4 /wm */ { BxImmediate_Ib, BX_IA_AAM },
  /* D5 /wm */ { BxImmediate_Ib, BX_IA_AAD },
  /* D6 /wm */ { 0, BX_IA_SALC },
  /* D7 /wm */ { 0, BX_IA_XLAT },
#if BX_SUPPORT_FPU
  /* D8 /wm */ { BxFPGroup, BX_IA_ERROR, BxOpcodeInfo_FPGroupD8 },
  /* D9 /wm */ { BxFPGroup, BX_IA_ERROR, BxOpcodeInfo_FPGroupD9 },
  /* DA /wm */ { BxFPGroup, BX_IA_ERROR, BxOpcodeInfo_FPGroupDA },
  /* DB /wm */ { BxFPGroup, BX_IA_ERROR, BxOpcodeInfo_FPGroupDB },
  /* DC /wm */ { BxFPGroup, BX_IA_ERROR, BxOpcodeInfo_FPGroupDC },
  /* DD /wm */ { BxFPGroup, BX_IA_ERROR, BxOpcodeInfo_FPGroupDD },
  /* DE /wm */ { BxFPGroup, BX_IA_ERROR, BxOpcodeInfo_FPGroupDE },
  /* DF /wm */ { BxFPGroup, BX_IA_ERROR, BxOpcodeInfo_FPGroupDF },
#else
  /* D8 /wm */ { 0, BX_IA_FPU_ESC },
  /* D9 /wm */ { 0, BX_IA_FPU_ESC },
  /* DA /wm */ { 0, BX_IA_FPU_ESC },
  /* DB /wm */ { 0, BX_IA_FPU_ESC },
  /* DC /wm */ { 0, BX_IA_FPU_ESC },
  /* DD /wm */ { 0, BX_IA_FPU_ESC },
  /* DE /wm */ { 0, BX_IA_FPU_ESC },
  /* DF /wm */ { 0, BX_IA_FPU_ESC },
#endif
  /* E0 /wm */ { BxImmediate_BrOff8 | BxTraceEnd, BX_IA_LOOPNE_Jb },
  /* E1 /wm */ { BxImmediate_BrOff8 | BxTraceEnd, BX_IA_LOOPE_Jb },
  /* E2 /wm */ { BxImmediate_BrOff8 | BxTraceEnd, BX_IA_LOOP_Jb },
  /* E3 /wm */ { BxImmediate_BrOff8 | BxTraceEnd, BX_IA_JCXZ_Jb },
  /* E4 /wm */ { BxImmediate_Ib, BX_IA_IN_ALIb },
  /* E5 /wm */ { BxImmediate_Ib, BX_IA_IN_AXIb },
  /* E6 /wm */ { BxImmediate_Ib, BX_IA_OUT_IbAL },
  /* E7 /wm */ { BxImmediate_Ib, BX_IA_OUT_IbAX },
  /* E8 /wm */ { BxImmediate_BrOff16 | BxTraceEnd, BX_IA_CALL_Jw },
  /* E9 /wm */ { BxImmediate_BrOff16 | BxTraceEnd, BX_IA_JMP_Jw },
  /* EA /wm */ { BxImmediate_IvIw | BxTraceEnd, BX_IA_JMP_Ap },
  /* EB /wm */ { BxImmediate_BrOff8 | BxTraceEnd, BX_IA_JMP_Jw },
  /* EC /wm */ { 0, BX_IA_IN_ALDX },
  /* ED /wm */ { 0, BX_IA_IN_AXDX },
  /* EE /wm */ { 0, BX_IA_OUT_DXAL },
  /* EF /wm */ { 0, BX_IA_OUT_DXAX },
  /* F0 /wm */ { 0, BX_IA_ERROR }, // LOCK
  /* F1 /wm */ { BxTraceEnd, BX_IA_INT1 },
  /* F2 /wm */ { 0, BX_IA_ERROR }, // REPNE/REPNZ
  /* F3 /wm */ { 0, BX_IA_ERROR }, // REP, REPE/REPZ
  /* F4 /wm */ { BxTraceEnd, BX_IA_HLT },
  /* F5 /wm */ { 0, BX_IA_CMC },
  /* F6 /wm */ { BxGroup3, BX_IA_ERROR, BxOpcodeInfoG3EbM },
  /* F7 /wm */ { BxGroup3, BX_IA_ERROR, BxOpcodeInfoG3EwM },
  /* F8 /wm */ { 0, BX_IA_CLC },
  /* F9 /wm */ { 0, BX_IA_STC },
  /* FA /wm */ { 0, BX_IA_CLI },
  /* FB /wm */ { 0, BX_IA_STI },
  /* FC /wm */ { 0, BX_IA_CLD },
  /* FD /wm */ { 0, BX_IA_STD },
  /* FE /wm */ { BxGroup4, BX_IA_ERROR, BxOpcodeInfoG4M },
  /* FF /wm */ { BxGroup5, BX_IA_ERROR, BxOpcodeInfoG5wM },

  /* 0F 00 /wm */ { BxGroup6, BX_IA_ERROR, BxOpcodeInfoG6 },
  /* 0F 01 /wm */ { BxGroup7, BX_IA_ERROR, BxOpcodeInfoG7M },
  /* 0F 02 /wm */ { 0, BX_IA_LAR_GvEw },
  /* 0F 03 /wm */ { 0, BX_IA_LSL_GvEw },
  /* 0F 04 /wm */ { 0, BX_IA_ERROR },
#if BX_SUPPORT_X86_64
  /* 0F 05 /wm */ { BxTraceEnd, BX_IA_SYSCALL },
#elif BX_CPU_LEVEL == 2
  /* 0F 05 /wm */ { BxTraceEnd, BX_IA_LOADALL },
#else
  /* 0F 05 /wm */ { 0, BX_IA_ERROR },
#endif
  /* 0F 06 /wm */ { 0, BX_IA_CLTS },
#if BX_SUPPORT_X86_64
  /* 0F 07 /wm */ { BxTraceEnd, BX_IA_SYSRET },
#else
  /* 0F 07 /wm */ { 0, BX_IA_ERROR },
#endif
  /* 0F 08 /wm */ { BxTraceEnd, BX_IA_INVD },
  /* 0F 09 /wm */ { BxTraceEnd, BX_IA_WBINVD },
  /* 0F 0A /wm */ { 0, BX_IA_ERROR },
  /* 0F 0B /wm */ { BxTraceEnd, BX_IA_UD2A },
  /* 0F 0C /wm */ { 0, BX_IA_ERROR },
#if BX_SUPPORT_X86_64 || BX_SUPPORT_3DNOW
  /* 0F 0D /wm */ { 0, BX_IA_NOP },             // 3DNow! PREFETCH on AMD, NOP on Intel
#else
  /* 0F 0D /wm */ { 0, BX_IA_ERROR },
#endif
  /* 0F 0E /wm */ { 0, BX_IA_FEMMS },           // 3DNow! FEMMS
#if BX_SUPPORT_3DNOW
  /* 0F 0F /wm */ { BxImmediate_Ib, BX_IA_ERROR, Bx3DNowOpcodeInfo },
#else
  /* 0F 0F /wm */ { 0, BX_IA_ERROR },
#endif
  /* 0F 10 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f10 },
  /* 0F 11 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f11 },
  /* 0F 12 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f12 },
  /* 0F 13 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f13M },
  /* 0F 14 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f14 },
  /* 0F 15 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f15 },
  /* 0F 16 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f16 },
  /* 0F 17 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f17M },
# if BX_CPU_LEVEL >= 6
  /* 0F 18 /wm */ { 0, BX_IA_PREFETCH }, // opcode group G16, PREFETCH hints
  /* 0F 19 /wm */ { 0, BX_IA_NOP },      // multi-byte NOP
  /* 0F 1A /wm */ { 0, BX_IA_NOP },      // multi-byte NOP
  /* 0F 1B /wm */ { 0, BX_IA_NOP },      // multi-byte NOP
  /* 0F 1C /wm */ { 0, BX_IA_NOP },      // multi-byte NOP
  /* 0F 1D /wm */ { 0, BX_IA_NOP },      // multi-byte NOP
  /* 0F 1E /wm */ { 0, BX_IA_NOP },      // multi-byte NOP
  /* 0F 1F /wm */ { 0, BX_IA_NOP },      // multi-byte NOP
#else
  /* 0F 18 /wm */ { 0, BX_IA_ERROR },
  /* 0F 19 /wm */ { 0, BX_IA_ERROR },
  /* 0F 1A /wm */ { 0, BX_IA_ERROR },
  /* 0F 1B /wm */ { 0, BX_IA_ERROR },
  /* 0F 1C /wm */ { 0, BX_IA_ERROR },
  /* 0F 1D /wm */ { 0, BX_IA_ERROR },
  /* 0F 1E /wm */ { 0, BX_IA_ERROR },
  /* 0F 1F /wm */ { 0, BX_IA_ERROR },
#endif
  /* 0F 20 /wm */ { 0, BX_IA_MOV_RdCd },
  /* 0F 21 /wm */ { 0, BX_IA_MOV_RdDd },
  /* 0F 22 /wm */ { BxTraceEnd, BX_IA_MOV_CdRd },
  /* 0F 23 /wm */ { BxTraceEnd, BX_IA_MOV_DdRd },
  /* 0F 24 /wm */ { BxTraceEnd, BX_IA_MOV_RdTd }, // not implemented
  /* 0F 25 /wm */ { 0, BX_IA_ERROR },
  /* 0F 26 /wm */ { BxTraceEnd, BX_IA_MOV_TdRd }, // not implemented
  /* 0F 27 /wm */ { 0, BX_IA_ERROR },
  /* 0F 28 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f28 },
  /* 0F 29 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f29 },
  /* 0F 2A /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2a },
  /* 0F 2B /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2bM },
  /* 0F 2C /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2c },
  /* 0F 2D /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2d },
  /* 0F 2E /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2e },
  /* 0F 2F /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2f },
  /* 0F 30 /wm */ { 0, BX_IA_WRMSR },
  /* 0F 31 /wm */ { 0, BX_IA_RDTSC },
  /* 0F 32 /wm */ { 0, BX_IA_RDMSR },
  /* 0F 33 /wm */ { 0, BX_IA_RDPMC },
  /* 0F 34 /wm */ { BxTraceEnd, BX_IA_SYSENTER },
  /* 0F 35 /wm */ { BxTraceEnd, BX_IA_SYSEXIT },
  /* 0F 36 /wm */ { 0, BX_IA_ERROR },
  /* 0F 37 /wm */ { 0, BX_IA_ERROR },
#if (BX_SUPPORT_SSE >= 4) || (BX_SUPPORT_SSE >= 3 && BX_SUPPORT_SSE_EXTENSION > 0)
  /* 0F 38 /wm */ { Bx3ByteOp, BX_IA_ERROR, BxOpcode3ByteTable0f38 }, // 3-byte escape
#else
  /* 0F 38 /wm */ { 0, BX_IA_ERROR },
#endif
  /* 0F 39 /wm */ { 0, BX_IA_ERROR },
#if (BX_SUPPORT_SSE >= 4) || (BX_SUPPORT_SSE >= 3 && BX_SUPPORT_SSE_EXTENSION > 0)
  /* 0F 3A /wm */ { Bx3ByteOp, BX_IA_ERROR, BxOpcode3ByteTable0f3a }, // 3-byte escape
#else
  /* 0F 3A /wm */ { 0, BX_IA_ERROR },
#endif
  /* 0F 3B /wm */ { 0, BX_IA_ERROR },
  /* 0F 3C /wm */ { 0, BX_IA_ERROR },
  /* 0F 3D /wm */ { 0, BX_IA_ERROR },
  /* 0F 3E /wm */ { 0, BX_IA_ERROR },
  /* 0F 3F /wm */ { 0, BX_IA_ERROR },
  /* 0F 40 /wm */ { 0, BX_IA_CMOVO_GwEwM },
  /* 0F 41 /wm */ { 0, BX_IA_CMOVNO_GwEwM },
  /* 0F 42 /wm */ { 0, BX_IA_CMOVB_GwEwM },
  /* 0F 43 /wm */ { 0, BX_IA_CMOVNB_GwEwM },
  /* 0F 44 /wm */ { 0, BX_IA_CMOVZ_GwEwM },
  /* 0F 45 /wm */ { 0, BX_IA_CMOVNZ_GwEwM },
  /* 0F 46 /wm */ { 0, BX_IA_CMOVBE_GwEwM },
  /* 0F 47 /wm */ { 0, BX_IA_CMOVNBE_GwEwM },
  /* 0F 48 /wm */ { 0, BX_IA_CMOVS_GwEwM },
  /* 0F 49 /wm */ { 0, BX_IA_CMOVNS_GwEwM },
  /* 0F 4A /wm */ { 0, BX_IA_CMOVP_GwEwM },
  /* 0F 4B /wm */ { 0, BX_IA_CMOVNP_GwEwM },
  /* 0F 4C /wm */ { 0, BX_IA_CMOVL_GwEwM },
  /* 0F 4D /wm */ { 0, BX_IA_CMOVNL_GwEwM },
  /* 0F 4E /wm */ { 0, BX_IA_CMOVLE_GwEwM },
  /* 0F 4F /wm */ { 0, BX_IA_CMOVNLE_GwEwM },
  /* 0F 50 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f50 },
  /* 0F 51 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f51 },
  /* 0F 52 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f52 },
  /* 0F 53 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f53 },
  /* 0F 54 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f54 },
  /* 0F 55 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f55 },
  /* 0F 56 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f56 },
  /* 0F 57 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f57 },
  /* 0F 58 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f58 },
  /* 0F 59 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f59 },
  /* 0F 5A /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5a },
  /* 0F 5B /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5b },
  /* 0F 5C /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5c },
  /* 0F 5D /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5d },
  /* 0F 5E /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5e },
  /* 0F 5F /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5f },
  /* 0F 60 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f60 },
  /* 0F 61 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f61 },
  /* 0F 62 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f62 },
  /* 0F 63 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f63 },
  /* 0F 64 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f64 },
  /* 0F 65 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f65 },
  /* 0F 66 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f66 },
  /* 0F 67 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f67 },
  /* 0F 68 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f68 },
  /* 0F 69 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f69 },
  /* 0F 6A /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6a },
  /* 0F 6B /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6b },
  /* 0F 6C /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6c },
  /* 0F 6D /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6d },
  /* 0F 6E /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6e },
  /* 0F 6F /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6f },
  /* 0F 70 /wm */ { BxImmediate_Ib | BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f70 },
  /* 0F 71 /wm */ { 0, BX_IA_ERROR }, // SSE Group G12
  /* 0F 72 /wm */ { 0, BX_IA_ERROR }, // SSE Group G13
  /* 0F 73 /wm */ { 0, BX_IA_ERROR }, // SSE Group G14
  /* 0F 74 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f74 },
  /* 0F 75 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f75 },
  /* 0F 76 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f76 },
  /* 0F 77 /wm */ { 0, BX_IA_EMMS },
  /* 0F 78 /wm */ { 0, BX_IA_ERROR },
  /* 0F 79 /wm */ { 0, BX_IA_ERROR },
  /* 0F 7A /wm */ { 0, BX_IA_ERROR },
  /* 0F 7B /wm */ { 0, BX_IA_ERROR },
  /* 0F 7C /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f7c },
  /* 0F 7D /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f7d },
  /* 0F 7E /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f7e },
  /* 0F 7F /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f7f },
  /* 0F 80 /wm */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JO_Jw },
  /* 0F 81 /wm */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JNO_Jw },
  /* 0F 82 /wm */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JB_Jw },
  /* 0F 83 /wm */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JNB_Jw },
  /* 0F 84 /wm */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JZ_Jw },
  /* 0F 85 /wm */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JNZ_Jw },
  /* 0F 86 /wm */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JBE_Jw },
  /* 0F 87 /wm */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JNBE_Jw },
  /* 0F 88 /wm */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JS_Jw },
  /* 0F 89 /wm */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JNS_Jw },
  /* 0F 8A /wm */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JP_Jw },
  /* 0F 8B /wm */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JNP_Jw },
  /* 0F 8C /wm */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JL_Jw },
  /* 0F 8D /wm */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JNL_Jw },
  /* 0F 8E /wm */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JLE_Jw },
  /* 0F 8F /wm */ { BxImmediate_BrOff16 | BxTraceJCC, BX_IA_JNLE_Jw },
  /* 0F 90 /wm */ { 0, BX_IA_SETO_EbM },
  /* 0F 91 /wm */ { 0, BX_IA_SETNO_EbM },
  /* 0F 92 /wm */ { 0, BX_IA_SETB_EbM },
  /* 0F 93 /wm */ { 0, BX_IA_SETNB_EbM },
  /* 0F 94 /wm */ { 0, BX_IA_SETZ_EbM },
  /* 0F 95 /wm */ { 0, BX_IA_SETNZ_EbM },
  /* 0F 96 /wm */ { 0, BX_IA_SETBE_EbM },
  /* 0F 97 /wm */ { 0, BX_IA_SETNBE_EbM },
  /* 0F 98 /wm */ { 0, BX_IA_SETS_EbM },
  /* 0F 99 /wm */ { 0, BX_IA_SETNS_EbM },
  /* 0F 9A /wm */ { 0, BX_IA_SETP_EbM },
  /* 0F 9B /wm */ { 0, BX_IA_SETNP_EbM },
  /* 0F 9C /wm */ { 0, BX_IA_SETL_EbM },
  /* 0F 9D /wm */ { 0, BX_IA_SETNL_EbM },
  /* 0F 9E /wm */ { 0, BX_IA_SETLE_EbM },
  /* 0F 9F /wm */ { 0, BX_IA_SETNLE_EbM },
  /* 0F A0 /wm */ { 0, BX_IA_PUSH16_FS },
  /* 0F A1 /wm */ { 0, BX_IA_POP16_FS },
  /* 0F A2 /wm */ { 0, BX_IA_CPUID },
  /* 0F A3 /wm */ { 0, BX_IA_BT_EwGwM },
  /* 0F A4 /wm */ { BxImmediate_Ib, BX_IA_SHLD_EwGwM },
  /* 0F A5 /wm */ { 0,              BX_IA_SHLD_EwGwM },
  /* 0F A6 /wm */ { BxTraceEnd, BX_IA_CMPXCHG_XBTS }, // not implemented
  /* 0F A7 /wm */ { BxTraceEnd, BX_IA_CMPXCHG_IBTS }, // not implemented
  /* 0F A8 /wm */ { 0, BX_IA_PUSH16_GS },
  /* 0F A9 /wm */ { 0, BX_IA_POP16_GS },
  /* 0F AA /wm */ { BxTraceEnd, BX_IA_RSM },
  /* 0F AB /wm */ { BxLockable, BX_IA_BTS_EwGwM },
  /* 0F AC /wm */ { BxImmediate_Ib, BX_IA_SHRD_EwGwM },
  /* 0F AD /wm */ { 0,              BX_IA_SHRD_EwGwM },
  /* 0F AE /wm */ { BxGroup15, BX_IA_ERROR, BxOpcodeInfoG15M },
  /* 0F AF /wm */ { 0, BX_IA_IMUL_GwEw },
  /* 0F B0 /wm */ { BxLockable, BX_IA_CMPXCHG_EbGbM },
  /* 0F B1 /wm */ { BxLockable, BX_IA_CMPXCHG_EwGwM },
  /* 0F B2 /wm */ { 0, BX_IA_LSS_GwMp },
  /* 0F B3 /wm */ { BxLockable, BX_IA_BTR_EwGwM },
  /* 0F B4 /wm */ { 0, BX_IA_LFS_GwMp },
  /* 0F B5 /wm */ { 0, BX_IA_LGS_GwMp },
  /* 0F B6 /wm */ { 0, BX_IA_MOVZX_GwEbM },
  /* 0F B7 /wm */ { 0, BX_IA_MOV_GwEwM }, // MOVZX_GwEw
  /* 0F B8 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fb8w },
  /* 0F B9 /wm */ { BxTraceEnd, BX_IA_UD2B },
  /* 0F BA /wm */ { BxGroup8, BX_IA_ERROR, BxOpcodeInfoG8EwIbM },
  /* 0F BB /wm */ { BxLockable, BX_IA_BTC_EwGwM },
  /* 0F BC /wm */ { 0, BX_IA_BSF_GwEw },
  /* 0F BD /wm */ { 0, BX_IA_BSR_GwEw },
  /* 0F BE /wm */ { 0, BX_IA_MOVSX_GwEbM },
  /* 0F BF /wm */ { 0, BX_IA_MOV_GwEwM }, // MOVSX_GwEw
  /* 0F C0 /wm */ { BxLockable, BX_IA_XADD_EbGbM },
  /* 0F C1 /wm */ { BxLockable, BX_IA_XADD_EwGwM },
  /* 0F C2 /wm */ { BxImmediate_Ib | BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fc2 },
  /* 0F C3 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fc3M },
  /* 0F C4 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fc4 },
  /* 0F C5 /wm */ { 0, BX_IA_ERROR }, // PEXTRW SSE group
  /* 0F C6 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fc6 },
  /* 0F C7 /wm */ { BxGroup9, BX_IA_ERROR, BxOpcodeInfoG9M },
  /* 0F C8 /wm */ { 0, BX_IA_BSWAP_ERX },
  /* 0F C9 /wm */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CA /wm */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CB /wm */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CC /wm */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CD /wm */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CE /wm */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CF /wm */ { 0, BX_IA_BSWAP_ERX },
  /* 0F D0 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd0 },
  /* 0F D1 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd1 },
  /* 0F D2 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd2 },
  /* 0F D3 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd3 },
  /* 0F D4 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd4 },
  /* 0F D5 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd5 },
  /* 0F D6 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd6 },
  /* 0F D7 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd7 },
  /* 0F D8 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd8 },
  /* 0F D9 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd9 },
  /* 0F DA /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fda },
  /* 0F DB /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fdb },
  /* 0F DC /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fdc },
  /* 0F DD /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fdd },
  /* 0F DE /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fde },
  /* 0F DF /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fdf },
  /* 0F E0 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe0 },
  /* 0F E1 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe1 },
  /* 0F E2 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe2 },
  /* 0F E3 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe3 },
  /* 0F E4 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe4 },
  /* 0F E5 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe5 },
  /* 0F E6 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe6 },
  /* 0F E7 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe7M },
  /* 0F E8 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe8 },
  /* 0F E9 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe9 },
  /* 0F EA /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fea },
  /* 0F EB /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0feb },
  /* 0F EC /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fec },
  /* 0F ED /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fed },
  /* 0F EE /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fee },
  /* 0F EF /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fef },
  /* 0F F0 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff0M },
  /* 0F F1 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff1 },
  /* 0F F2 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff2 },
  /* 0F F3 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff3 },
  /* 0F F4 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff4 },
  /* 0F F5 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff5 },
  /* 0F F6 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff6 },
  /* 0F F7 /wm */ { 0, BX_IA_ERROR }, // MASKMOV SSE group
  /* 0F F8 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff8 },
  /* 0F F9 /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff9 },
  /* 0F FA /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ffa },
  /* 0F FB /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ffb },
  /* 0F FC /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ffc },
  /* 0F FD /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ffd },
  /* 0F FE /wm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ffe },
  /* 0F FF /wm */ { 0, BX_IA_ERROR },

  // 512 entries for 32bit mode
  /* 00 /dm */ { BxLockable, BX_IA_ADD_EbGbM },
  /* 01 /dm */ { BxLockable, BX_IA_ADD_EdGdM },
  /* 02 /dm */ { 0, BX_IA_ADD_GbEbM },
  /* 03 /dm */ { 0, BX_IA_ADD_GdEdM },
  /* 04 /dm */ { BxImmediate_Ib, BX_IA_ADD_ALIb },
  /* 05 /dm */ { BxImmediate_Id, BX_IA_ADD_EAXId },
  /* 06 /dm */ { 0, BX_IA_PUSH32_ES },
  /* 07 /dm */ { 0, BX_IA_POP32_ES },
  /* 08 /dm */ { BxLockable, BX_IA_OR_EbGbM },
  /* 09 /dm */ { BxLockable, BX_IA_OR_EdGdM },
  /* 0A /dm */ { 0, BX_IA_OR_GbEbM },
  /* 0B /dm */ { 0, BX_IA_OR_GdEdM },
  /* 0C /dm */ { BxImmediate_Ib, BX_IA_OR_ALIb },
  /* 0D /dm */ { BxImmediate_Id, BX_IA_OR_EAXId },
  /* 0E /dm */ { 0, BX_IA_PUSH32_CS },
  /* 0F /dm */ { 0, BX_IA_ERROR }, // 2-byte escape
  /* 10 /dm */ { BxLockable, BX_IA_ADC_EbGbM },
  /* 11 /dm */ { BxLockable, BX_IA_ADC_EdGdM },
  /* 12 /dm */ { 0, BX_IA_ADC_GbEbM },
  /* 13 /dm */ { 0, BX_IA_ADC_GdEdM },
  /* 14 /dm */ { BxImmediate_Ib, BX_IA_ADC_ALIb },
  /* 15 /dm */ { BxImmediate_Id, BX_IA_ADC_EAXId },
  /* 16 /dm */ { 0, BX_IA_PUSH32_SS },
  /* 17 /dm */ { BxTraceEnd, BX_IA_POP32_SS }, // async_event = 1
  /* 18 /dm */ { BxLockable, BX_IA_SBB_EbGbM },
  /* 19 /dm */ { BxLockable, BX_IA_SBB_EdGdM },
  /* 1A /dm */ { 0, BX_IA_SBB_GbEbM },
  /* 1B /dm */ { 0, BX_IA_SBB_GdEdM },
  /* 1C /dm */ { BxImmediate_Ib, BX_IA_SBB_ALIb },
  /* 1D /dm */ { BxImmediate_Id, BX_IA_SBB_EAXId },
  /* 1E /dm */ { 0, BX_IA_PUSH32_DS },
  /* 1F /dm */ { 0, BX_IA_POP32_DS },
  /* 20 /dm */ { BxLockable, BX_IA_AND_EbGbM },
  /* 21 /dm */ { BxLockable, BX_IA_AND_EdGdM },
  /* 22 /dm */ { 0, BX_IA_AND_GbEbM },
  /* 23 /dm */ { 0, BX_IA_AND_GdEdM },
  /* 24 /dm */ { BxImmediate_Ib, BX_IA_AND_ALIb },
  /* 25 /dm */ { BxImmediate_Id, BX_IA_AND_EAXId },
  /* 26 /dm */ { 0, BX_IA_ERROR }, // ES:
  /* 27 /dm */ { 0, BX_IA_DAA },
  /* 28 /dm */ { BxLockable, BX_IA_SUB_EbGbM },
  /* 29 /dm */ { BxLockable, BX_IA_SUB_EdGdM },
  /* 2A /dm */ { 0, BX_IA_SUB_GbEbM },
  /* 2B /dm */ { 0, BX_IA_SUB_GdEdM },
  /* 2C /dm */ { BxImmediate_Ib, BX_IA_SUB_ALIb },
  /* 2D /dm */ { BxImmediate_Id, BX_IA_SUB_EAXId },
  /* 2E /dm */ { 0, BX_IA_ERROR }, // CS:
  /* 2F /dm */ { 0, BX_IA_DAS },
  /* 30 /dm */ { BxLockable, BX_IA_XOR_EbGbM },
  /* 31 /dm */ { BxLockable, BX_IA_XOR_EdGdM },
  /* 32 /dm */ { 0, BX_IA_XOR_GbEbM },
  /* 33 /dm */ { 0, BX_IA_XOR_GdEdM },
  /* 34 /dm */ { BxImmediate_Ib, BX_IA_XOR_ALIb },
  /* 35 /dm */ { BxImmediate_Id, BX_IA_XOR_EAXId },
  /* 36 /dm */ { 0, BX_IA_ERROR }, // SS:
  /* 37 /dm */ { 0, BX_IA_AAA },
  /* 38 /dm */ { 0, BX_IA_CMP_EbGbM },
  /* 39 /dm */ { 0, BX_IA_CMP_EdGdM },
  /* 3A /dm */ { 0, BX_IA_CMP_GbEbM },
  /* 3B /dm */ { 0, BX_IA_CMP_GdEdM },
  /* 3C /dm */ { BxImmediate_Ib, BX_IA_CMP_ALIb },
  /* 3D /dm */ { BxImmediate_Id, BX_IA_CMP_EAXId },
  /* 3E /dm */ { 0, BX_IA_ERROR }, // DS:
  /* 3F /dm */ { 0, BX_IA_AAS },
  /* 40 /dm */ { 0, BX_IA_INC_ERX },
  /* 41 /dm */ { 0, BX_IA_INC_ERX },
  /* 42 /dm */ { 0, BX_IA_INC_ERX },
  /* 43 /dm */ { 0, BX_IA_INC_ERX },
  /* 44 /dm */ { 0, BX_IA_INC_ERX },
  /* 45 /dm */ { 0, BX_IA_INC_ERX },
  /* 46 /dm */ { 0, BX_IA_INC_ERX },
  /* 47 /dm */ { 0, BX_IA_INC_ERX },
  /* 48 /dm */ { 0, BX_IA_DEC_ERX },
  /* 49 /dm */ { 0, BX_IA_DEC_ERX },
  /* 4A /dm */ { 0, BX_IA_DEC_ERX },
  /* 4B /dm */ { 0, BX_IA_DEC_ERX },
  /* 4C /dm */ { 0, BX_IA_DEC_ERX },
  /* 4D /dm */ { 0, BX_IA_DEC_ERX },
  /* 4E /dm */ { 0, BX_IA_DEC_ERX },
  /* 4F /dm */ { 0, BX_IA_DEC_ERX },
  /* 50 /dm */ { 0, BX_IA_PUSH_ERX },
  /* 51 /dm */ { 0, BX_IA_PUSH_ERX },
  /* 52 /dm */ { 0, BX_IA_PUSH_ERX },
  /* 53 /dm */ { 0, BX_IA_PUSH_ERX },
  /* 54 /dm */ { 0, BX_IA_PUSH_ERX },
  /* 55 /dm */ { 0, BX_IA_PUSH_ERX },
  /* 56 /dm */ { 0, BX_IA_PUSH_ERX },
  /* 57 /dm */ { 0, BX_IA_PUSH_ERX },
  /* 58 /dm */ { 0, BX_IA_POP_ERX },
  /* 59 /dm */ { 0, BX_IA_POP_ERX },
  /* 5A /dm */ { 0, BX_IA_POP_ERX },
  /* 5B /dm */ { 0, BX_IA_POP_ERX },
  /* 5C /dm */ { 0, BX_IA_POP_ERX },
  /* 5D /dm */ { 0, BX_IA_POP_ERX },
  /* 5E /dm */ { 0, BX_IA_POP_ERX },
  /* 5F /dm */ { 0, BX_IA_POP_ERX },
  /* 60 /dm */ { 0, BX_IA_PUSHAD32 },
  /* 61 /dm */ { 0, BX_IA_POPAD32 },
  /* 62 /dm */ { 0, BX_IA_BOUND_GdMa },
  /* 63 /dm */ { 0, BX_IA_ARPL_EwGw },
  /* 64 /dm */ { 0, BX_IA_ERROR }, // FS:
  /* 65 /dm */ { 0, BX_IA_ERROR }, // GS:
  /* 66 /dm */ { 0, BX_IA_ERROR }, // OS:
  /* 67 /dm */ { 0, BX_IA_ERROR }, // AS:
  /* 68 /dm */ { BxImmediate_Id, BX_IA_PUSH_Id },
  /* 69 /dm */ { BxImmediate_Id, BX_IA_IMUL_GdEdId },
  /* 6A /dm */ { BxImmediate_Ib_SE, BX_IA_PUSH_Id },
  /* 6B /dm */ { BxImmediate_Ib_SE, BX_IA_IMUL_GdEdId },
  /* 6C /dm */ { 0, BX_IA_REP_INSB_YbDX },
  /* 6D /dm */ { 0, BX_IA_REP_INSD_YdDX },
  /* 6E /dm */ { 0, BX_IA_REP_OUTSB_DXXb },
  /* 6F /dm */ { 0, BX_IA_REP_OUTSD_DXXd },
  /* 70 /dm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JO_Jd },
  /* 71 /dm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNO_Jd },
  /* 72 /dm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JB_Jd },
  /* 73 /dm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNB_Jd },
  /* 74 /dm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JZ_Jd },
  /* 75 /dm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNZ_Jd },
  /* 76 /dm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JBE_Jd },
  /* 77 /dm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNBE_Jd },
  /* 78 /dm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JS_Jd },
  /* 79 /dm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNS_Jd },
  /* 7A /dm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JP_Jd },
  /* 7B /dm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNP_Jd },
  /* 7C /dm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JL_Jd },
  /* 7D /dm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNL_Jd },
  /* 7E /dm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JLE_Jd },
  /* 7F /dm */ { BxImmediate_BrOff8 | BxTraceJCC, BX_IA_JNLE_Jd },
  /* 80 /dm */ { BxGroup1 | BxImmediate_Ib, BX_IA_ERROR, BxOpcodeInfoG1EbIbM },
  /* 81 /dm */ { BxGroup1 | BxImmediate_Id, BX_IA_ERROR, BxOpcodeInfoG1EdM },
  /* 82 /dm */ { BxGroup1 | BxImmediate_Ib, BX_IA_ERROR, BxOpcodeInfoG1EbIbM },
  /* 83 /dm */ { BxGroup1 | BxImmediate_Ib_SE, BX_IA_ERROR, BxOpcodeInfoG1EdM },
  /* 84 /dm */ { 0, BX_IA_TEST_EbGbM },
  /* 85 /dm */ { 0, BX_IA_TEST_EdGdM },
  /* 86 /dm */ { BxLockable, BX_IA_XCHG_EbGbM },
  /* 87 /dm */ { BxLockable, BX_IA_XCHG_EdGdM },
  /* 88 /dm */ { 0, BX_IA_MOV_EbGbM },
  /* 89 /dm */ { 0, BX_IA_MOV_EdGdM },
  /* 8A /dm */ { 0, BX_IA_MOV_GbEbM },
  /* 8B /dm */ { 0, BX_IA_MOV_GdEdM },
  /* 8C /dm */ { 0, BX_IA_MOV_EwSwM },
  /* 8D /dm */ { 0, BX_IA_LEA_GdM },
  /* 8E /dm */ { 0, BX_IA_MOV_SwEw },
  /* 8F /dm */ { BxGroup1A, BX_IA_ERROR, BxOpcodeInfoG1AEdM },
  /* 90 /dm */ { 0, BX_IA_NOP },
  /* 91 /dm */ { 0, BX_IA_XCHG_ERXEAX },
  /* 92 /dm */ { 0, BX_IA_XCHG_ERXEAX },
  /* 93 /dm */ { 0, BX_IA_XCHG_ERXEAX },
  /* 94 /dm */ { 0, BX_IA_XCHG_ERXEAX },
  /* 95 /dm */ { 0, BX_IA_XCHG_ERXEAX },
  /* 96 /dm */ { 0, BX_IA_XCHG_ERXEAX },
  /* 97 /dm */ { 0, BX_IA_XCHG_ERXEAX },
  /* 98 /dm */ { 0, BX_IA_CWDE },
  /* 99 /dm */ { 0, BX_IA_CDQ },
  /* 9A /dm */ { BxImmediate_IvIw | BxTraceEnd, BX_IA_CALL32_Ap },
  /* 9B /dm */ { 0, BX_IA_FWAIT },
  /* 9C /dm */ { 0, BX_IA_PUSHF_Fd },
  /* 9D /dm */ { 0, BX_IA_POPF_Fd },
  /* 9E /dm */ { 0, BX_IA_SAHF },
  /* 9F /dm */ { 0, BX_IA_LAHF },
  /* A0 /dm */ { BxImmediate_O, BX_IA_MOV_ALOd },
  /* A1 /dm */ { BxImmediate_O, BX_IA_MOV_EAXOd },
  /* A2 /dm */ { BxImmediate_O, BX_IA_MOV_OdAL },
  /* A3 /dm */ { BxImmediate_O, BX_IA_MOV_OdEAX },
  /* A4 /dm */ { 0, BX_IA_REP_MOVSB_XbYb },
  /* A5 /dm */ { 0, BX_IA_REP_MOVSD_XdYd },
  /* A6 /dm */ { 0, BX_IA_REP_CMPSB_XbYb },
  /* A7 /dm */ { 0, BX_IA_REP_CMPSD_XdYd },
  /* A8 /dm */ { BxImmediate_Ib, BX_IA_TEST_ALIb },
  /* A9 /dm */ { BxImmediate_Id, BX_IA_TEST_EAXId },
  /* AA /dm */ { 0, BX_IA_REP_STOSB_YbAL },
  /* AB /dm */ { 0, BX_IA_REP_STOSD_YdEAX },
  /* AC /dm */ { 0, BX_IA_REP_LODSB_ALXb },
  /* AD /dm */ { 0, BX_IA_REP_LODSD_EAXXd },
  /* AE /dm */ { 0, BX_IA_REP_SCASB_ALXb  },
  /* AF /dm */ { 0, BX_IA_REP_SCASD_EAXXd },
  /* B0 /dm */ { BxImmediate_Ib, BX_IA_MOV_RLIb },
  /* B1 /dm */ { BxImmediate_Ib, BX_IA_MOV_RLIb },
  /* B2 /dm */ { BxImmediate_Ib, BX_IA_MOV_RLIb },
  /* B3 /dm */ { BxImmediate_Ib, BX_IA_MOV_RLIb },
  /* B4 /dm */ { BxImmediate_Ib, BX_IA_MOV_RHIb },
  /* B5 /dm */ { BxImmediate_Ib, BX_IA_MOV_RHIb },
  /* B6 /dm */ { BxImmediate_Ib, BX_IA_MOV_RHIb },
  /* B7 /dm */ { BxImmediate_Ib, BX_IA_MOV_RHIb },
  /* B8 /dm */ { BxImmediate_Id, BX_IA_MOV_ERXId },
  /* B9 /dm */ { BxImmediate_Id, BX_IA_MOV_ERXId },
  /* BA /dm */ { BxImmediate_Id, BX_IA_MOV_ERXId },
  /* BB /dm */ { BxImmediate_Id, BX_IA_MOV_ERXId },
  /* BC /dm */ { BxImmediate_Id, BX_IA_MOV_ERXId },
  /* BD /dm */ { BxImmediate_Id, BX_IA_MOV_ERXId },
  /* BE /dm */ { BxImmediate_Id, BX_IA_MOV_ERXId },
  /* BF /dm */ { BxImmediate_Id, BX_IA_MOV_ERXId },
  /* C0 /dm */ { BxGroup2 | BxImmediate_Ib, BX_IA_ERROR, BxOpcodeInfoG2Eb },
  /* C1 /dm */ { BxGroup2 | BxImmediate_Ib, BX_IA_ERROR, BxOpcodeInfoG2EdM },
  /* C2 /dm */ { BxImmediate_Iw | BxTraceEnd, BX_IA_RETnear32_Iw },
  /* C3 /dm */ { BxTraceEnd,                  BX_IA_RETnear32 },
  /* C4 /dm */ { 0, BX_IA_LES_GdMp },
  /* C5 /dm */ { 0, BX_IA_LDS_GdMp },
  /* C6 /dm */ { BxGroup11, BX_IA_ERROR, BxOpcodeInfoG11EbM },
  /* C7 /dm */ { BxGroup11, BX_IA_ERROR, BxOpcodeInfoG11EdM },
  /* C8 /dm */ { BxImmediate_IwIb, BX_IA_ENTER32_IwIb },
  /* C9 /dm */ { 0, BX_IA_LEAVE },
  /* CA /dm */ { BxImmediate_Iw | BxTraceEnd, BX_IA_RETfar32_Iw },
  /* CB /dm */ { BxTraceEnd,                  BX_IA_RETfar32 },
  /* CC /dm */ { BxTraceEnd, BX_IA_INT3 },
  /* CD /dm */ { BxImmediate_Ib | BxTraceEnd, BX_IA_INT_Ib },
  /* CE /dm */ { BxTraceEnd, BX_IA_INTO },
  /* CF /dm */ { BxTraceEnd, BX_IA_IRET32 },
  /* D0 /dm */ { BxGroup2 | BxImmediate_I1, BX_IA_ERROR, BxOpcodeInfoG2Eb },
  /* D1 /dm */ { BxGroup2 | BxImmediate_I1, BX_IA_ERROR, BxOpcodeInfoG2EdM },
  /* D2 /dm */ { BxGroup2, BX_IA_ERROR, BxOpcodeInfoG2Eb },
  /* D3 /dm */ { BxGroup2, BX_IA_ERROR, BxOpcodeInfoG2EdM },
  /* D4 /dm */ { BxImmediate_Ib, BX_IA_AAM },
  /* D5 /dm */ { BxImmediate_Ib, BX_IA_AAD },
  /* D6 /dm */ { 0, BX_IA_SALC },
  /* D7 /dm */ { 0, BX_IA_XLAT },
#if BX_SUPPORT_FPU
  /* D8 /dm */ { BxFPGroup, BX_IA_ERROR, BxOpcodeInfo_FPGroupD8 },
  /* D9 /dm */ { BxFPGroup, BX_IA_ERROR, BxOpcodeInfo_FPGroupD9 },
  /* DA /dm */ { BxFPGroup, BX_IA_ERROR, BxOpcodeInfo_FPGroupDA },
  /* DB /dm */ { BxFPGroup, BX_IA_ERROR, BxOpcodeInfo_FPGroupDB },
  /* DC /dm */ { BxFPGroup, BX_IA_ERROR, BxOpcodeInfo_FPGroupDC },
  /* DD /dm */ { BxFPGroup, BX_IA_ERROR, BxOpcodeInfo_FPGroupDD },
  /* DE /dm */ { BxFPGroup, BX_IA_ERROR, BxOpcodeInfo_FPGroupDE },
  /* DF /dm */ { BxFPGroup, BX_IA_ERROR, BxOpcodeInfo_FPGroupDF },
#else
  /* D8 /dm */ { 0, BX_IA_FPU_ESC },
  /* D9 /dm */ { 0, BX_IA_FPU_ESC },
  /* DA /dm */ { 0, BX_IA_FPU_ESC },
  /* DB /dm */ { 0, BX_IA_FPU_ESC },
  /* DC /dm */ { 0, BX_IA_FPU_ESC },
  /* DD /dm */ { 0, BX_IA_FPU_ESC },
  /* DE /dm */ { 0, BX_IA_FPU_ESC },
  /* DF /dm */ { 0, BX_IA_FPU_ESC },
#endif
  /* E0 /dm */ { BxImmediate_BrOff8 | BxTraceEnd, BX_IA_LOOPNE_Jb },
  /* E1 /dm */ { BxImmediate_BrOff8 | BxTraceEnd, BX_IA_LOOPE_Jb },
  /* E2 /dm */ { BxImmediate_BrOff8 | BxTraceEnd, BX_IA_LOOP_Jb },
  /* E3 /dm */ { BxImmediate_BrOff8 | BxTraceEnd, BX_IA_JCXZ_Jb },
  /* E4 /dm */ { BxImmediate_Ib, BX_IA_IN_ALIb },
  /* E5 /dm */ { BxImmediate_Ib, BX_IA_IN_EAXIb },
  /* E6 /dm */ { BxImmediate_Ib, BX_IA_OUT_IbAL },
  /* E7 /dm */ { BxImmediate_Ib, BX_IA_OUT_IbEAX },
  /* E8 /dm */ { BxImmediate_BrOff32 | BxTraceEnd, BX_IA_CALL_Jd },
  /* E9 /dm */ { BxImmediate_BrOff32 | BxTraceEnd, BX_IA_JMP_Jd },
  /* EA /dm */ { BxImmediate_IvIw | BxTraceEnd, BX_IA_JMP_Ap },
  /* EB /dm */ { BxImmediate_BrOff8 | BxTraceEnd, BX_IA_JMP_Jd },
  /* EC /dm */ { 0, BX_IA_IN_ALDX },
  /* ED /dm */ { 0, BX_IA_IN_EAXDX },
  /* EE /dm */ { 0, BX_IA_OUT_DXAL },
  /* EF /dm */ { 0, BX_IA_OUT_DXEAX },
  /* F0 /dm */ { 0, BX_IA_ERROR }, // LOCK:
  /* F1 /dm */ { BxTraceEnd, BX_IA_INT1 },
  /* F2 /dm */ { 0, BX_IA_ERROR }, // REPNE/REPNZ
  /* F3 /dm */ { 0, BX_IA_ERROR }, // REP,REPE/REPZ
  /* F4 /dm */ { BxTraceEnd, BX_IA_HLT },
  /* F5 /dm */ { 0, BX_IA_CMC },
  /* F6 /dm */ { BxGroup3, BX_IA_ERROR, BxOpcodeInfoG3EbM },
  /* F7 /dm */ { BxGroup3, BX_IA_ERROR, BxOpcodeInfoG3EdM },
  /* F8 /dm */ { 0, BX_IA_CLC },
  /* F9 /dm */ { 0, BX_IA_STC },
  /* FA /dm */ { 0, BX_IA_CLI },
  /* FB /dm */ { 0, BX_IA_STI },
  /* FC /dm */ { 0, BX_IA_CLD },
  /* FD /dm */ { 0, BX_IA_STD },
  /* FE /dm */ { BxGroup4, BX_IA_ERROR, BxOpcodeInfoG4M },
  /* FF /dm */ { BxGroup5, BX_IA_ERROR, BxOpcodeInfoG5dM },

  /* 0F 00 /dm */ { BxGroup6, BX_IA_ERROR, BxOpcodeInfoG6 },
  /* 0F 01 /dm */ { BxGroup7, BX_IA_ERROR, BxOpcodeInfoG7M },
  /* 0F 02 /dm */ { 0, BX_IA_LAR_GvEw },
  /* 0F 03 /dm */ { 0, BX_IA_LSL_GvEw },
  /* 0F 04 /dm */ { 0, BX_IA_ERROR },
#if BX_SUPPORT_X86_64
  /* 0F 05 /dm */ { BxTraceEnd, BX_IA_SYSCALL },
#elif BX_CPU_LEVEL == 2
  /* 0F 05 /dm */ { BxTraceEnd, BX_IA_LOADALL },
#else
  /* 0F 05 /dm */ { 0, BX_IA_ERROR },
#endif
  /* 0F 06 /dm */ { 0, BX_IA_CLTS },
#if BX_SUPPORT_X86_64
  /* 0F 07 /dm */ { BxTraceEnd, BX_IA_SYSRET },
#else
  /* 0F 07 /dm */ { 0, BX_IA_ERROR },
#endif
  /* 0F 08 /dm */ { BxTraceEnd, BX_IA_INVD },
  /* 0F 09 /dm */ { BxTraceEnd, BX_IA_WBINVD },
  /* 0F 0A /dm */ { 0, BX_IA_ERROR },
  /* 0F 0B /dm */ { BxTraceEnd, BX_IA_UD2A },
  /* 0F 0C /dm */ { 0, BX_IA_ERROR },
#if BX_SUPPORT_X86_64 || BX_SUPPORT_3DNOW
  /* 0F 0D /dm */ { 0, BX_IA_NOP },             // 3DNow! PREFETCH on AMD, NOP on Intel
#else
  /* 0F 0D /dm */ { 0, BX_IA_ERROR },
#endif
  /* 0F 0E /dm */ { 0, BX_IA_FEMMS },           // 3DNow! FEMMS
#if BX_SUPPORT_3DNOW
  /* 0F 0F /dm */ { BxImmediate_Ib, BX_IA_ERROR, Bx3DNowOpcodeInfo },
#else
  /* 0F 0F /dm */ { 0, BX_IA_ERROR },
#endif
  /* 0F 10 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f10 },
  /* 0F 11 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f11 },
  /* 0F 12 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f12 },
  /* 0F 13 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f13M },
  /* 0F 14 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f14 },
  /* 0F 15 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f15 },
  /* 0F 16 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f16 },
  /* 0F 17 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f17M },
# if BX_CPU_LEVEL >= 6
  /* 0F 18 /dm */ { 0, BX_IA_PREFETCH }, // opcode group G16, PREFETCH hints
  /* 0F 19 /dm */ { 0, BX_IA_NOP },      // multi-byte NOP
  /* 0F 1A /dm */ { 0, BX_IA_NOP },      // multi-byte NOP
  /* 0F 1B /dm */ { 0, BX_IA_NOP },      // multi-byte NOP
  /* 0F 1C /dm */ { 0, BX_IA_NOP },      // multi-byte NOP
  /* 0F 1D /dm */ { 0, BX_IA_NOP },      // multi-byte NOP
  /* 0F 1E /dm */ { 0, BX_IA_NOP },      // multi-byte NOP
  /* 0F 1F /dm */ { 0, BX_IA_NOP },      // multi-byte NOP
#else
  /* 0F 18 /dm */ { 0, BX_IA_ERROR },
  /* 0F 19 /dm */ { 0, BX_IA_ERROR },
  /* 0F 1A /dm */ { 0, BX_IA_ERROR },
  /* 0F 1B /dm */ { 0, BX_IA_ERROR },
  /* 0F 1C /dm */ { 0, BX_IA_ERROR },
  /* 0F 1D /dm */ { 0, BX_IA_ERROR },
  /* 0F 1E /dm */ { 0, BX_IA_ERROR },
  /* 0F 1F /dm */ { 0, BX_IA_ERROR },
#endif
  /* 0F 20 /dm */ { 0, BX_IA_MOV_RdCd },
  /* 0F 21 /dm */ { 0, BX_IA_MOV_RdDd },
  /* 0F 22 /dm */ { BxTraceEnd, BX_IA_MOV_CdRd },
  /* 0F 23 /dm */ { BxTraceEnd, BX_IA_MOV_DdRd },
  /* 0F 24 /dm */ { BxTraceEnd, BX_IA_MOV_RdTd }, // not implemented
  /* 0F 25 /dm */ { 0, BX_IA_ERROR },
  /* 0F 26 /dm */ { BxTraceEnd, BX_IA_MOV_TdRd }, // not implemented
  /* 0F 27 /dm */ { 0, BX_IA_ERROR },
  /* 0F 28 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f28 },
  /* 0F 29 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f29 },
  /* 0F 2A /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2a },
  /* 0F 2B /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2bM },
  /* 0F 2C /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2c },
  /* 0F 2D /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2d },
  /* 0F 2E /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2e },
  /* 0F 2F /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f2f },
  /* 0F 30 /dm */ { 0, BX_IA_WRMSR },
  /* 0F 31 /dm */ { 0, BX_IA_RDTSC },
  /* 0F 32 /dm */ { 0, BX_IA_RDMSR },
  /* 0F 33 /dm */ { 0, BX_IA_RDPMC },
  /* 0F 34 /dm */ { BxTraceEnd, BX_IA_SYSENTER },
  /* 0F 35 /dm */ { BxTraceEnd, BX_IA_SYSEXIT },
  /* 0F 36 /dm */ { 0, BX_IA_ERROR },
  /* 0F 37 /dm */ { 0, BX_IA_ERROR },
#if (BX_SUPPORT_SSE >= 4) || (BX_SUPPORT_SSE >= 3 && BX_SUPPORT_SSE_EXTENSION > 0)
  /* 0F 38 /dm */ { Bx3ByteOp, BX_IA_ERROR, BxOpcode3ByteTable0f38 }, // 3-byte escape
#else
  /* 0F 38 /dm */ { 0, BX_IA_ERROR },
#endif
  /* 0F 39 /dm */ { 0, BX_IA_ERROR },
#if (BX_SUPPORT_SSE >= 4) || (BX_SUPPORT_SSE >= 3 && BX_SUPPORT_SSE_EXTENSION > 0)
  /* 0F 3A /dm */ { Bx3ByteOp, BX_IA_ERROR, BxOpcode3ByteTable0f3a }, // 3-byte escape
#else
  /* 0F 3A /dm */ { 0, BX_IA_ERROR },
#endif
  /* 0F 3B /dm */ { 0, BX_IA_ERROR },
  /* 0F 3C /dm */ { 0, BX_IA_ERROR },
  /* 0F 3D /dm */ { 0, BX_IA_ERROR },
  /* 0F 3E /dm */ { 0, BX_IA_ERROR },
  /* 0F 3F /dm */ { 0, BX_IA_ERROR },
  /* 0F 40 /dm */ { 0, BX_IA_CMOVO_GdEdM },
  /* 0F 41 /dm */ { 0, BX_IA_CMOVNO_GdEdM },
  /* 0F 42 /dm */ { 0, BX_IA_CMOVB_GdEdM },
  /* 0F 43 /dm */ { 0, BX_IA_CMOVNB_GdEdM },
  /* 0F 44 /dm */ { 0, BX_IA_CMOVZ_GdEdM },
  /* 0F 45 /dm */ { 0, BX_IA_CMOVNZ_GdEdM },
  /* 0F 46 /dm */ { 0, BX_IA_CMOVBE_GdEdM },
  /* 0F 47 /dm */ { 0, BX_IA_CMOVNBE_GdEdM },
  /* 0F 48 /dm */ { 0, BX_IA_CMOVS_GdEdM },
  /* 0F 49 /dm */ { 0, BX_IA_CMOVNS_GdEdM },
  /* 0F 4A /dm */ { 0, BX_IA_CMOVP_GdEdM },
  /* 0F 4B /dm */ { 0, BX_IA_CMOVNP_GdEdM },
  /* 0F 4C /dm */ { 0, BX_IA_CMOVL_GdEdM },
  /* 0F 4D /dm */ { 0, BX_IA_CMOVNL_GdEdM },
  /* 0F 4E /dm */ { 0, BX_IA_CMOVLE_GdEdM },
  /* 0F 4F /dm */ { 0, BX_IA_CMOVNLE_GdEdM },
  /* 0F 50 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f50 },
  /* 0F 51 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f51 },
  /* 0F 52 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f52 },
  /* 0F 53 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f53 },
  /* 0F 54 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f54 },
  /* 0F 55 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f55 },
  /* 0F 56 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f56 },
  /* 0F 57 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f57 },
  /* 0F 58 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f58 },
  /* 0F 59 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f59 },
  /* 0F 5A /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5a },
  /* 0F 5B /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5b },
  /* 0F 5C /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5c },
  /* 0F 5D /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5d },
  /* 0F 5E /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5e },
  /* 0F 5F /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f5f },
  /* 0F 60 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f60 },
  /* 0F 61 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f61 },
  /* 0F 62 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f62 },
  /* 0F 63 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f63 },
  /* 0F 64 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f64 },
  /* 0F 65 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f65 },
  /* 0F 66 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f66 },
  /* 0F 67 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f67 },
  /* 0F 68 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f68 },
  /* 0F 69 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f69 },
  /* 0F 6A /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6a },
  /* 0F 6B /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6b },
  /* 0F 6C /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6c },
  /* 0F 6D /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6d },
  /* 0F 6E /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6e },
  /* 0F 6F /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f6f },
  /* 0F 70 /dm */ { BxImmediate_Ib | BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f70 },
  /* 0F 71 /dm */ { 0, BX_IA_ERROR }, // SSE Group G12
  /* 0F 72 /dm */ { 0, BX_IA_ERROR }, // SSE Group G13
  /* 0F 73 /dm */ { 0, BX_IA_ERROR }, // SSE Group G14
  /* 0F 74 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f74 },
  /* 0F 75 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f75 },
  /* 0F 76 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f76 },
  /* 0F 77 /dm */ { 0, BX_IA_EMMS },
  /* 0F 78 /dm */ { 0, BX_IA_ERROR },
  /* 0F 79 /dm */ { 0, BX_IA_ERROR },
  /* 0F 7A /dm */ { 0, BX_IA_ERROR },
  /* 0F 7B /dm */ { 0, BX_IA_ERROR },
  /* 0F 7C /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f7c },
  /* 0F 7D /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f7d },
  /* 0F 7E /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f7e },
  /* 0F 7F /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0f7f },
  /* 0F 80 /dm */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JO_Jd },
  /* 0F 81 /dm */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JNO_Jd },
  /* 0F 82 /dm */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JB_Jd },
  /* 0F 83 /dm */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JNB_Jd },
  /* 0F 84 /dm */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JZ_Jd },
  /* 0F 85 /dm */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JNZ_Jd },
  /* 0F 86 /dm */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JBE_Jd },
  /* 0F 87 /dm */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JNBE_Jd },
  /* 0F 88 /dm */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JS_Jd },
  /* 0F 89 /dm */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JNS_Jd },
  /* 0F 8A /dm */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JP_Jd },
  /* 0F 8B /dm */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JNP_Jd },
  /* 0F 8C /dm */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JL_Jd },
  /* 0F 8D /dm */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JNL_Jd },
  /* 0F 8E /dm */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JLE_Jd },
  /* 0F 8F /dm */ { BxImmediate_BrOff32 | BxTraceJCC, BX_IA_JNLE_Jd },
  /* 0F 90 /dm */ { 0, BX_IA_SETO_EbM },
  /* 0F 91 /dm */ { 0, BX_IA_SETNO_EbM },
  /* 0F 92 /dm */ { 0, BX_IA_SETB_EbM },
  /* 0F 93 /dm */ { 0, BX_IA_SETNB_EbM },
  /* 0F 94 /dm */ { 0, BX_IA_SETZ_EbM },
  /* 0F 95 /dm */ { 0, BX_IA_SETNZ_EbM },
  /* 0F 96 /dm */ { 0, BX_IA_SETBE_EbM },
  /* 0F 97 /dm */ { 0, BX_IA_SETNBE_EbM },
  /* 0F 98 /dm */ { 0, BX_IA_SETS_EbM },
  /* 0F 99 /dm */ { 0, BX_IA_SETNS_EbM },
  /* 0F 9A /dm */ { 0, BX_IA_SETP_EbM },
  /* 0F 9B /dm */ { 0, BX_IA_SETNP_EbM },
  /* 0F 9C /dm */ { 0, BX_IA_SETL_EbM },
  /* 0F 9D /dm */ { 0, BX_IA_SETNL_EbM },
  /* 0F 9E /dm */ { 0, BX_IA_SETLE_EbM },
  /* 0F 9F /dm */ { 0, BX_IA_SETNLE_EbM },
  /* 0F A0 /dm */ { 0, BX_IA_PUSH32_FS },
  /* 0F A1 /dm */ { 0, BX_IA_POP32_FS },
  /* 0F A2 /dm */ { 0, BX_IA_CPUID },
  /* 0F A3 /dm */ { 0, BX_IA_BT_EdGdM },
  /* 0F A4 /dm */ { BxImmediate_Ib, BX_IA_SHLD_EdGdM },
  /* 0F A5 /dm */ { 0,              BX_IA_SHLD_EdGdM },
  /* 0F A6 /dm */ { BxTraceEnd, BX_IA_CMPXCHG_XBTS }, // not implemented
  /* 0F A7 /dm */ { BxTraceEnd, BX_IA_CMPXCHG_IBTS }, // not implemented
  /* 0F A8 /dm */ { 0, BX_IA_PUSH32_GS },
  /* 0F A9 /dm */ { 0, BX_IA_POP32_GS },
  /* 0F AA /dm */ { BxTraceEnd, BX_IA_RSM },
  /* 0F AB /dm */ { BxLockable, BX_IA_BTS_EdGdM },
  /* 0F AC /dm */ { BxImmediate_Ib, BX_IA_SHRD_EdGdM },
  /* 0F AD /dm */ { 0,              BX_IA_SHRD_EdGdM },
  /* 0F AE /dm */ { BxGroup15, BX_IA_ERROR, BxOpcodeInfoG15M },
  /* 0F AF /dm */ { 0, BX_IA_IMUL_GdEd },
  /* 0F B0 /dm */ { BxLockable, BX_IA_CMPXCHG_EbGbM },
  /* 0F B1 /dm */ { BxLockable, BX_IA_CMPXCHG_EdGdM },
  /* 0F B2 /dm */ { 0, BX_IA_LSS_GdMp },
  /* 0F B3 /dm */ { BxLockable, BX_IA_BTR_EdGdM },
  /* 0F B4 /dm */ { 0, BX_IA_LFS_GdMp },
  /* 0F B5 /dm */ { 0, BX_IA_LGS_GdMp },
  /* 0F B6 /dm */ { 0, BX_IA_MOVZX_GdEbM },
  /* 0F B7 /dm */ { 0, BX_IA_MOVZX_GdEwM },
  /* 0F B8 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fb8d },
  /* 0F B9 /dm */ { BxTraceEnd, BX_IA_UD2B },
  /* 0F BA /dm */ { BxGroup8, BX_IA_ERROR, BxOpcodeInfoG8EdIbM },
  /* 0F BB /dm */ { BxLockable, BX_IA_BTC_EdGdM },
  /* 0F BC /dm */ { 0, BX_IA_BSF_GdEd },
  /* 0F BD /dm */ { 0, BX_IA_BSR_GdEd },
  /* 0F BE /dm */ { 0, BX_IA_MOVSX_GdEbM },
  /* 0F BF /dm */ { 0, BX_IA_MOVSX_GdEwM },
  /* 0F C0 /dm */ { BxLockable, BX_IA_XADD_EbGbM },
  /* 0F C1 /dm */ { BxLockable, BX_IA_XADD_EdGdM },
  /* 0F C2 /dm */ { BxImmediate_Ib | BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fc2 },
  /* 0F C3 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fc3M },
  /* 0F C4 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fc4 },
  /* 0F C5 /dm */ { 0, BX_IA_ERROR }, // PEXTRW SSE group
  /* 0F C6 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fc6 },
  /* 0F C7 /dm */ { BxGroup9, BX_IA_ERROR, BxOpcodeInfoG9M },
  /* 0F C8 /dm */ { 0, BX_IA_BSWAP_ERX },
  /* 0F C9 /dm */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CA /dm */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CB /dm */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CC /dm */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CD /dm */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CE /dm */ { 0, BX_IA_BSWAP_ERX },
  /* 0F CF /dm */ { 0, BX_IA_BSWAP_ERX },
  /* 0F D0 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd0 },
  /* 0F D1 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd1 },
  /* 0F D2 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd2 },
  /* 0F D3 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd3 },
  /* 0F D4 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd4 },
  /* 0F D5 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd5 },
  /* 0F D6 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd6 },
  /* 0F D7 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd7 },
  /* 0F D8 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd8 },
  /* 0F D9 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fd9 },
  /* 0F DA /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fda },
  /* 0F DB /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fdb },
  /* 0F DC /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fdc },
  /* 0F DD /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fdd },
  /* 0F DE /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fde },
  /* 0F DF /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fdf },
  /* 0F E0 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe0 },
  /* 0F E1 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe1 },
  /* 0F E2 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe2 },
  /* 0F E3 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe3 },
  /* 0F E4 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe4 },
  /* 0F E5 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe5 },
  /* 0F E6 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe6 },
  /* 0F E7 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe7M },
  /* 0F E8 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe8 },
  /* 0F E9 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fe9 },
  /* 0F EA /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fea },
  /* 0F EB /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0feb },
  /* 0F EC /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fec },
  /* 0F ED /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fed },
  /* 0F EE /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fee },
  /* 0F EF /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0fef },
  /* 0F F0 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff0M },
  /* 0F F1 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff1 },
  /* 0F F2 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff2 },
  /* 0F F3 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff3 },
  /* 0F F4 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff4 },
  /* 0F F5 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff5 },
  /* 0F F6 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff6 },
  /* 0F F7 /dm */ { 0, BX_IA_ERROR }, // MASKMOV SSE group
  /* 0F F8 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff8 },
  /* 0F F9 /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ff9 },
  /* 0F FA /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ffa },
  /* 0F FB /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ffb },
  /* 0F FC /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ffc },
  /* 0F FD /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ffd },
  /* 0F FE /dm */ { BxPrefixSSE, BX_IA_ERROR, BxOpcodeGroupSSE_0ffe },
  /* 0F FF /dm */ { 0, BX_IA_ERROR }
};

  unsigned BX_CPP_AttrRegparmN(3)
BX_CPU_C::fetchDecode32(const Bit8u *iptr, bxInstruction_c *i, unsigned remainingInPage)
{
  // remain must be at least 1
  unsigned remain = (remainingInPage < 15) ? remainingInPage : 15;

  bx_bool is_32, lock=0;
  unsigned b1, b2, ilen=0, attr, os_32, ia_opcode = 0;
  unsigned imm_mode, offset;
  unsigned rm = 0, mod=0, nnn=0;

#define SSE_PREFIX_NONE 0
#define SSE_PREFIX_66   1
#define SSE_PREFIX_F2   2
#define SSE_PREFIX_F3   3
  unsigned sse_prefix = SSE_PREFIX_NONE;

  os_32 = is_32 =
    BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.u.segment.d_b;

  i->ResolveModrm = 0;
  i->init(/*os32*/ is_32,  /*as32*/ is_32,
          /*os64*/     0,  /*as64*/     0);

  offset = os_32 << 9; // * 512

fetch_b1:
  b1 = *iptr++;
  ilen++;

  switch (b1) {
    case 0x66: // OpSize
      BX_INSTR_PREFIX(BX_CPU_ID, b1);
      os_32 = !is_32;
      offset = os_32 << 9;
      if(!sse_prefix) sse_prefix = SSE_PREFIX_66;
      i->setOs32B(os_32);
      if (ilen < remain) {
        goto fetch_b1;
      }
      return(0);
    case 0x67: // AddrSize
      BX_INSTR_PREFIX(BX_CPU_ID, b1);
      i->setAs32B(!is_32);
      if (ilen < remain) {
        goto fetch_b1;
      }
      return(0);
    case 0xf2: // REPNE/REPNZ
      BX_INSTR_PREFIX(BX_CPU_ID, b1);
      sse_prefix = SSE_PREFIX_F2;
      i->setRepUsed(b1 & 3);
      if (ilen < remain) {
        goto fetch_b1;
      }
      return(0);
    case 0xf3: // REP/REPE/REPZ
      BX_INSTR_PREFIX(BX_CPU_ID, b1);
      sse_prefix = SSE_PREFIX_F3;
      i->setRepUsed(b1 & 3);
      if (ilen < remain) {
        goto fetch_b1;
      }
      return(0);
    case 0x2e: // CS:
      BX_INSTR_PREFIX(BX_CPU_ID, b1);
      i->setSeg(BX_SEG_REG_CS);
      if (ilen < remain) {
        goto fetch_b1;
      }
      return(0);
    case 0x26: // ES:
      BX_INSTR_PREFIX(BX_CPU_ID, b1);
      i->setSeg(BX_SEG_REG_ES);
      if (ilen < remain) {
        goto fetch_b1;
      }
      return(0);
    case 0x36: // SS:
      BX_INSTR_PREFIX(BX_CPU_ID, b1);
      i->setSeg(BX_SEG_REG_SS);
      if (ilen < remain) {
        goto fetch_b1;
      }
      return(0);
    case 0x3e: // DS:
      BX_INSTR_PREFIX(BX_CPU_ID, b1);
      i->setSeg(BX_SEG_REG_DS);
      if (ilen < remain) {
        goto fetch_b1;
      }
      return(0);
    case 0x64: // FS:
      BX_INSTR_PREFIX(BX_CPU_ID, b1);
      i->setSeg(BX_SEG_REG_FS);
      if (ilen < remain) {
        goto fetch_b1;
      }
      return(0);
    case 0x65: // GS:
      BX_INSTR_PREFIX(BX_CPU_ID, b1);
      i->setSeg(BX_SEG_REG_GS);
      if (ilen < remain) {
        goto fetch_b1;
      }
      return(0);
    case 0xf0: // LOCK:
      BX_INSTR_PREFIX(BX_CPU_ID, b1);
      lock = 1;
      if (ilen < remain) {
        goto fetch_b1;
      }
      return(0);
    case 0x0f: // 2-byte escape
      i->setOpcodeExtension();
      if (ilen < remain) {
        ilen++;
        b1 = 0x100 | *iptr++;
        break;
      }
      return(0);
    default:
      break;
  }

  attr = BxOpcodeInfo32R[b1+offset].Attr;

  if (BxOpcodeHasModrm32[b1]) {

#if (BX_SUPPORT_SSE >= 4) || (BX_SUPPORT_SSE >= 3 && BX_SUPPORT_SSE_EXTENSION > 0)
    unsigned b3 = 0;
    // handle 3-byte escape
    if ((attr & BxGroupX) == Bx3ByteOp) {
      if (ilen < remain) {
        ilen++;
        b3 = *iptr++;
      }
      else
        return(0);
    }
#endif

    // opcode requires modrm byte
    if (ilen < remain) {
      ilen++;
      b2 = *iptr++;
    }
    else
      return(0);

    // Parse mod-nnn-rm and related bytes
    mod = b2 & 0xc0; // leave unshifted
    nnn = (b2 >> 3) & 0x7;
    rm  = b2 & 0x7;

    // MOVs with CRx and DRx always use register ops and ignore the mod field.
    if ((b1 & ~3) == 0x120)
      mod = 0xc0;

    i->setModRM(b2);
    i->setRm(rm);
    i->setNnn(nnn);

    if (mod == 0xc0) { // mod == 11b
      i->assertModC0();
      goto modrm_done;
    }

    i->setSibBase(rm);      // initialize with rm to use BxResolve32Base
    i->setSibIndex(BX_NIL_REGISTER);
    // initialize displ32 with zero to include cases with no diplacement
    i->modRMForm.displ32u = 0;

    if (i->as32L()) {
      // 32-bit addressing modes; note that mod==11b handled above
      i->ResolveModrm = &BX_CPU_C::BxResolve32Base;
      if (rm != 4) { // no s-i-b byte
        if (mod == 0x00) { // mod == 00b
          if (BX_NULL_SEG_REG(i->seg())) i->setSeg(BX_SEG_REG_DS);
          if (rm == 5) {
            i->setSibBase(BX_NIL_REGISTER);
get_32bit_displ:
            if ((ilen+3) < remain) {
              i->modRMForm.displ32u = FetchDWORD(iptr);
              iptr += 4;
              ilen += 4;
              goto modrm_done;
            }
            else return(0);
          }
          // mod==00b, rm!=4, rm!=5
          goto modrm_done;
        }
        if (BX_NULL_SEG_REG(i->seg()))
          i->setSeg(sreg_mod01or10_rm32[rm]);
        if (mod == 0x40) { // mod == 01b
get_8bit_displ:
          if (ilen < remain) {
            // 8 sign extended to 32
            i->modRMForm.displ32u = (Bit8s) *iptr++;
            ilen++;
            goto modrm_done;
          }
          else return(0);
        }
        // (mod == 0x80) mod == 10b
        goto get_32bit_displ;
      }
      else { // mod!=11b, rm==4, s-i-b byte follows
        unsigned sib, base, index, scale;
        if (ilen < remain) {
          sib = *iptr++;
          ilen++;
        }
        else {
          return(0);
        }
        base  = sib & 0x7; sib >>= 3;
        index = sib & 0x7; sib >>= 3;
        scale = sib;
        i->setSibScale(scale);
        i->setSibBase(base);
        if (index != 4) {
          i->ResolveModrm = &BX_CPU_C::BxResolve32BaseIndex;
          i->setSibIndex(index);
        }
        if (mod == 0x00) { // mod==00b, rm==4
          if (BX_NULL_SEG_REG(i->seg()))
            i->setSeg(sreg_mod0_base32[base]);
          if (base == 0x05) {
            i->setSibBase(BX_NIL_REGISTER);
            goto get_32bit_displ;
          }
          // mod==00b, rm==4, base!=5
          goto modrm_done;
        }
        if (BX_NULL_SEG_REG(i->seg()))
          i->setSeg(sreg_mod1or2_base32[base]);
        if (mod == 0x40) // mod==01b, rm==4
          goto get_8bit_displ;
        // (mod == 0x80),   mod==10b, rm==4
        goto get_32bit_displ;
      }
    }
    else {
      // 16-bit addressing modes, mod==11b handled above
      i->ResolveModrm = &BX_CPU_C::BxResolve16BaseIndex;
      i->setSibBase(Resolve16BaseReg[rm]);
      i->setSibIndex(Resolve16IndexReg[rm]);
      if (mod == 0x00) { // mod == 00b
        if (BX_NULL_SEG_REG(i->seg()))
          i->setSeg(sreg_mod00_rm16[rm]);
        if (rm == 0x06) {
          i->ResolveModrm = &BX_CPU_C::BxResolve16Disp;
get_16bit_displ:
          if ((ilen+1) < remain) {
            i->modRMForm.displ16u = FetchWORD(iptr);
            iptr += 2;
            ilen += 2;
            goto modrm_done;
          }
          else return(0);
        }
        goto modrm_done;
      }
      if (BX_NULL_SEG_REG(i->seg()))
        i->setSeg(sreg_mod01or10_rm16[rm]);
      if (mod == 0x40) { // mod == 01b
        if (ilen < remain) {
          // 8 sign extended to 16
          i->modRMForm.displ16u = (Bit8s) *iptr++;
          ilen++;
          goto modrm_done;
        }
        else return(0);
      }
      // (mod == 0x80)      mod == 10b
      goto get_16bit_displ;
    }

modrm_done:

    // Resolve ExecutePtr and additional opcode Attr
    const BxOpcodeInfo_t *OpcodeInfoPtr;
    if (mod == 0xc0) {
      OpcodeInfoPtr = &(BxOpcodeInfo32R[b1+offset]);
      attr = BxOpcodeInfo32R[b1+offset].Attr;
    }
    else {
      OpcodeInfoPtr = &(BxOpcodeInfo32M[b1+offset]);
      attr = BxOpcodeInfo32M[b1+offset].Attr;
    }

    while(attr & BxGroupX) {
      Bit32u Group = attr & BxGroupX;
      attr &= ~BxGroupX;

      switch(Group) {
        case BxGroupN:
          OpcodeInfoPtr = &(OpcodeInfoPtr->AnotherArray[nnn]);
          break;
        case BxRMGroup:
          OpcodeInfoPtr = &(OpcodeInfoPtr->AnotherArray[rm]);
          break;
#if (BX_SUPPORT_SSE >= 4) || (BX_SUPPORT_SSE >= 3 && BX_SUPPORT_SSE_EXTENSION > 0)
        case Bx3ByteOp:
          OpcodeInfoPtr = &(OpcodeInfoPtr->AnotherArray[b3]);
          break;
#endif
        case BxPrefixSSE:
          /* For SSE opcodes look into another 4 entries table
                     with the opcode prefixes (NONE, 0x66, 0xF2, 0xF3) */
          OpcodeInfoPtr = &(OpcodeInfoPtr->AnotherArray[sse_prefix]);
          break;
#if BX_SUPPORT_FPU
        case BxFPEscape:
          {
            int index = (b1-0xD8)*64 + (0x3f & b2);
            OpcodeInfoPtr = &(OpcodeInfoPtr->AnotherArray[index]);
          }
          break;
#endif
        default:
          BX_PANIC(("fetchdecode: Unknown opcode group"));
      }

      /* get additional attributes from group table */
      attr |= OpcodeInfoPtr->Attr;
    }

    ia_opcode = OpcodeInfoPtr->IA;
  }
  else {
    // Opcode does not require a MODRM byte.
    // Note that a 2-byte opcode (0F XX) will jump to before
    // the if() above after fetching the 2nd byte, so this path is
    // taken in all cases if a modrm byte is NOT required.
    ia_opcode = BxOpcodeInfo32R[b1+offset].IA;
    i->setOpcodeReg(b1 & 7);
  }

  if (lock) { // lock prefix invalid opcode
    // lock prefix not allowed or destination operand is not memory
    // mod == 0xc0 can't be BxLockable in fetchdecode tables
    if (/*(mod == 0xc0) ||*/ !(attr & BxLockable)) {
      BX_INFO(("LOCK prefix unallowed (op1=0x%x, attr=0x%x, mod=0x%x, nnn=%u)", b1, attr, mod, nnn));
      // replace execution function with undefined-opcode
      ia_opcode = BX_IA_ERROR;
    }
  }

  imm_mode = attr & BxImmediate;
  if (imm_mode) {
    switch (imm_mode) {
      case BxImmediate_I1:
        i->modRMForm.Ib = 1;
        break;
      case BxImmediate_Ib:
        if (ilen < remain) {
          i->modRMForm.Ib = *iptr;
          ilen++;
        }
        else {
          return(0);
        }
        break;
      case BxImmediate_Ib_SE: // Sign extend to OS size
        if (ilen < remain) {
          Bit8s temp8s = *iptr;
          if (i->os32L())
            i->modRMForm.Id = (Bit32s) temp8s;
          else
            i->modRMForm.Iw = (Bit16s) temp8s;
          ilen++;
        }
        else {
          return(0);
        }
        break;
      case BxImmediate_Iw:
        if ((ilen+1) < remain) {
          i->modRMForm.Iw = FetchWORD(iptr);
          ilen += 2;
        }
        else {
          return(0);
        }
        break;
      case BxImmediate_Id:
        if ((ilen+3) < remain) {
          i->modRMForm.Id = FetchDWORD(iptr);
          ilen += 4;
        }
        else {
          return(0);
        }
        break;
      case BxImmediate_IbIb:
        if (ilen < remain) {
          i->IxIxForm.Ib = *iptr++;
          ilen++;
        }
        else return(0);
        if (ilen < remain) {
          i->IxIxForm.Ib2 = *iptr;
          ilen++;
        }
        else {
          return(0);
        }
        break;
      case BxImmediate_IwIb:
        if ((ilen+1) < remain) {
          i->IxIxForm.Iw = FetchWORD(iptr);
          iptr += 2;
          ilen += 2;
        }
        else return(0);
        if (ilen < remain) {
          i->IxIxForm.Ib2 = *iptr;
          ilen++;
        }
        else {
          return(0);
        }
        break;
      case BxImmediate_IvIw: // CALL_Ap
        if (i->os32L()) {
          if ((ilen+3) < remain) {
            i->IxIxForm.Id = FetchDWORD(iptr);
            iptr += 4;
            ilen += 4;
          }
          else return(0);
        }
        else {
          if ((ilen+1) < remain) {
            i->IxIxForm.Iw = FetchWORD(iptr);
            iptr += 2;
            ilen += 2;
          }
          else return(0);
        }
        // Get Iw for BxImmediate_IvIw
        if ((ilen+1) < remain) {
          i->IxIxForm.Iw2 = FetchWORD(iptr);
          ilen += 2;
        }
        else {
          return(0);
        }
        break;
      case BxImmediate_O:
        // For is which embed the address in the opcode.
        if (i->as32L()) {
          // fetch 32bit address into Id
          if ((ilen+3) < remain) {
            i->modRMForm.Id = FetchDWORD(iptr);
            ilen += 4;
          }
          else return(0);
        }
        else {
          // fetch 16bit address into Id
          if ((ilen+1) < remain) {
            i->modRMForm.Id = (Bit32u) FetchWORD(iptr);
            ilen += 2;
          }
          else return(0);
        }
        break;
      case BxImmediate_BrOff8:
        if (ilen < remain) {
          i->modRMForm.Id = (Bit8s) (*iptr);
          ilen++;
        }
        else {
          return(0);
        }
        break;
      case BxImmediate_BrOff16:
        if ((ilen+1) < remain) {
          i->modRMForm.Id = (Bit16s) FetchWORD(iptr);
          ilen += 2;
        }
        else {
          return(0);
        }
        break;
      default:
        BX_INFO(("b1 was %x", b1));
        BX_PANIC(("fetchdecode: imm_mode = %u", imm_mode));
    }
  }

#if BX_SUPPORT_3DNOW
  if(b1 == 0x10f)
     ia_opcode = Bx3DNowOpcodeInfo[i->modRMForm.Ib].IA;
#endif

  i->execute = BxOpcodesTable[ia_opcode];

  if (BX_NULL_SEG_REG(i->seg()))
     i->setSeg(BX_SEG_REG_DS);

#if BX_SUPPORT_TRACE_CACHE
  if ((attr & BxTraceEnd) ||
        (i->execute == &BX_CPU_C::BxError)) i->setStopTraceAttr();
#endif

  i->setB1(b1);
  i->setILen(ilen);

  return(1);
}

void BX_CPP_AttrRegparmN(1) BX_CPU_C::BxError(bxInstruction_c *i)
{
  BX_DEBUG(("BxError: i with opcode=0x%u%02x", i->hasOpcodeExtension(), i->b1()));
  BX_DEBUG(("modrm was 0x%02x, nnn was %u, rm was %u", i->modrm(), i->nnn(), i->rm()));
  BX_DEBUG(("WARNING: Encountered an unknown instruction (signalling #UD)"));

  BX_CPU_THIS_PTR UndefinedOpcode(i);
}
