codes.h

ESS3890+SL原代码（1*16内存）

/* Copyright 2001, ESS Technology, Inc.     
/* SCCSID @(#)codes.h	1.8 03/25/02 */

/*
 * $Log$
 */

/** VGB: portable GameBoy emulator ***************************/
/**                                                         **/
/**                          Codes.h                        **/
/**                                                         **/
/** This file contains implementation for the main table of **/
/** Z80 commands. It is included from Z80.c.                **/
/**                                                         **/
/** Copyright (C) Marat Fayzullin 1994-2001                 **/
/**     The contents of this file are property of Marat     **/
/**     Fayzullin and should only be used as agreed with    **/
/**     him. The file is confidential. Absolutely no        **/
/**     distribution allowed.                               **/
/*************************************************************/
#ifdef VGB

case 0x08:
  ICount -= 20;
  J.B.l=RdZ80(RPC.W++);J.B.h=RdZ80(RPC.W++);
  WrZ80(J.W++,R->SP.B.l);WrZ80(J.W,R->SP.B.h);
  break;

case 0x22:
     ICount -= 8;
     WrZ80(R->HL.W++,R->AF.B.h);break;
case 0x2A:
     ICount -= 8;
     R->AF.B.h=RdZ80(R->HL.W++);break;

case 0x32:
     ICount -= 8;
     WrZ80(R->HL.W--,R->AF.B.h);break;
case 0x3A:
     ICount -= 8;
     R->AF.B.h=RdZ80(R->HL.W--);break;

case 0xD9:
  ICount -= 16;
  if(!(R->IFF&0x01))
  {
    R->IFF|=0x20;
    R->IBackup=ICount;
    ICount=1;
  }
  M_RET;
  break;

case 0xE0:
     ICount -= 12;
     WrZ80(0xFF00+RdZ80(RPC.W++),R->AF.B.h);break;
case 0xE2:
     ICount -= 8;
     WrZ80(0xFF00+R->BC.B.l,R->AF.B.h);break;
case 0xE8:
     ICount -= 16;
     R->SP.W+=(signed char)RdZ80(RPC.W++);break;
case 0xEA:
     ICount -= 16;
     J.B.l=RdZ80(RPC.W++);
     J.B.h=RdZ80(RPC.W++);
     WrZ80(J.W,R->AF.B.h);
     break;

case 0xF0:
     ICount -= 12;
     R->AF.B.h=RdZ80(0xFF00+RdZ80(RPC.W++));break;
case 0xF2:
     ICount -= 8;
     R->AF.B.h=RdZ80(0xFF00+R->BC.B.l);break;
case 0xF8:
     ICount -= 12;
     R->HL.W=R->SP.W+(signed char)RdZ80(RPC.W++);break;
case 0xFA:
     ICount -= 16;
     J.B.l=RdZ80(RPC.W++);
     J.B.h=RdZ80(RPC.W++);
     R->AF.B.h=RdZ80(J.W);
     break;

case JR_NZ: /*0x20*/
     ICount -= 8;
     if(R->AF.B.l&Z_FLAG)  RPC.W++; else { ICount-=4;M_JR; } break;
case JR_NC:  /*0x30*/
     ICount -= 8;
     if(R->AF.B.l&C_FLAG)  RPC.W++; else { ICount-=4;M_JR; } break;
case JR_Z:
     ICount -= 12;
     if(R->AF.B.l&Z_FLAG)  { ICount-=4;M_JR; } else RPC.W++; break;
case JR_C:
     ICount -= 8;
     if(R->AF.B.l&C_FLAG)  { ICount-=4;M_JR; } else RPC.W++; break;

case JP_NZ:
     ICount -= 12;
     if(R->AF.B.l&Z_FLAG)  RPC.W+=2; else { ICount-=4;M_JP; } break;
case JP_NC:
     ICount -= 12;
     if(R->AF.B.l&C_FLAG)  RPC.W+=2; else { ICount-=4;M_JP; } break;
case JP_Z:
     ICount -= 12;
     if(R->AF.B.l&Z_FLAG)  { ICount-=4;M_JP; } else RPC.W+=2; break;
case JP_C:
     ICount -= 12;
     if(R->AF.B.l&C_FLAG)  { ICount-=4;M_JP; } else RPC.W+=2; break;

case RET_NZ:
     ICount -= 8;
     if(!(R->AF.B.l&Z_FLAG)) { ICount-=12;M_RET; } break;
case RET_NC:
     ICount -= 8;
     if(!(R->AF.B.l&C_FLAG)) { ICount-=12;M_RET; } break;
case RET_Z:
     ICount -= 8;
     if(R->AF.B.l&Z_FLAG)    { ICount-=12;M_RET; } break;
case RET_C:
     ICount -= 8;
     if(R->AF.B.l&C_FLAG)    { ICount-=12;M_RET; } break;

case CALL_NZ:
    ICount -= 12;
    if(R->AF.B.l&Z_FLAG)  RPC.W+=2;  else { ICount-=12;M_CALL; } break;
case CALL_NC:
    ICount -= 12;
    if(R->AF.B.l&C_FLAG)  RPC.W+=2;  else { ICount-=12;M_CALL; } break;
case CALL_Z:
    ICount -= 12;
    if(R->AF.B.l&Z_FLAG)  { ICount-=12;M_CALL; } else RPC.W+=2; break;
case CALL_C:
    ICount -= 12;
    if(R->AF.B.l&C_FLAG)  { ICount-=12;M_CALL; } else RPC.W+=2; break;

case ADD_B:
     ICount -= 4;
     M_ADD(R->BC.B.h);break;
case ADD_C:
     ICount -= 4;
     M_ADD(R->BC.B.l);break;
case ADD_D:
     ICount -= 4;
     M_ADD(R->DE.B.h);break;
case ADD_E:
     ICount -= 4;
     M_ADD(R->DE.B.l);break;
case ADD_H:
     ICount -= 4;
     M_ADD(R->HL.B.h);break;
case ADD_L:
     ICount -= 4;
     M_ADD(R->HL.B.l);break;
case ADD_A:
     ICount -= 4;
     M_ADD(R->AF.B.h);break;
case ADD_xHL:
     ICount -= 8;
     I=RdZ80(R->HL.W);M_ADD(I);break;
case ADD_BYTE:
     ICount -= 8;
     I=RdZ80(RPC.W++);M_ADD(I);break;

case SUB_B:
     ICount -= 4;
     M_SUB(R->BC.B.h);break;
case SUB_C:
     ICount -= 4;
     M_SUB(R->BC.B.l);break;
case SUB_D:
     ICount -= 4;
     M_SUB(R->DE.B.h);break;
case SUB_E:
     ICount -= 4;
     M_SUB(R->DE.B.l);break;
case SUB_H:
     ICount -= 4;
     M_SUB(R->HL.B.h);break;
case SUB_L:
     ICount -= 4;
     M_SUB(R->HL.B.l);break;
case SUB_A:
     ICount -= 4;
     R->AF.B.h=0;R->AF.B.l=/*N_FLAG|Z_FLAG*/0x42;break;
case SUB_xHL:
     ICount -= 8;
     I=RdZ80(R->HL.W);M_SUB(I);break;
case SUB_BYTE:
     ICount -= 4;
     I=RdZ80(RPC.W++);M_SUB(I);break;

case AND_B:
     ICount -= 4;
     M_AND(R->BC.B.h);break;
case AND_C:
     ICount -= 4;
     M_AND(R->BC.B.l);break;
case AND_D:
     ICount -= 4;
     M_AND(R->DE.B.h);break;
case AND_E:
     ICount -= 4;
     M_AND(R->DE.B.l);break;
case AND_H:
     ICount -= 4;
     M_AND(R->HL.B.h);break;
case AND_L:
     ICount -= 4;
     M_AND(R->HL.B.l);break;
case AND_A:
     ICount -= 4;
     M_AND(R->AF.B.h);break;
case AND_xHL:
     ICount -= 8;
     I=RdZ80(R->HL.W);M_AND(I);break;
case AND_BYTE:
     ICount -= 8;
     I=RdZ80(RPC.W++);M_AND(I);break;

case OR_B:
     ICount -= 4;
     M_OR(R->BC.B.h);break;
case OR_C:
     ICount -= 4;
     M_OR(R->BC.B.l);break;
case OR_D:
     ICount -= 4;
     M_OR(R->DE.B.h);break;
case OR_E:
     ICount -= 4;
     M_OR(R->DE.B.l);break;
case OR_H:
     ICount -= 4;
     M_OR(R->HL.B.h);break;
case OR_L:
     ICount -= 4;
     M_OR(R->HL.B.l);break;
case OR_A:
     ICount -= 4;
     M_OR(R->AF.B.h);break;
case OR_xHL:
     ICount -= 8;
     I=RdZ80(R->HL.W);M_OR(I);break;
case OR_BYTE:
     ICount -= 8;
     I=RdZ80(RPC.W++);M_OR(I);break;

case ADC_B:
     ICount -= 4;
     M_ADC(R->BC.B.h);break;
case ADC_C:
     ICount -= 4;
     M_ADC(R->BC.B.l);break;
case ADC_D:
     ICount -= 4;
     M_ADC(R->DE.B.h);break;
case ADC_E:
     ICount -= 4;
     M_ADC(R->DE.B.l);break;
case ADC_H:
     ICount -= 4;
     M_ADC(R->HL.B.h);break;
case ADC_L:
     ICount -= 4;
     M_ADC(R->HL.B.l);break;
case ADC_A:
     ICount -= 4;
     M_ADC(R->AF.B.h);break;
case ADC_xHL:
     ICount -= 8;
     I=RdZ80(R->HL.W);M_ADC(I);break;
case ADC_BYTE:
     ICount -= 8;
     I=RdZ80(RPC.W++);M_ADC(I);break;

case SBC_B:
     ICount -= 4;
     M_SBC(R->BC.B.h);break;
case SBC_C:
     ICount -= 4;
     M_SBC(R->BC.B.l);break;
case SBC_D:
     ICount -= 4;
     M_SBC(R->DE.B.h);break;
case SBC_E:
     ICount -= 4;
     M_SBC(R->DE.B.l);break;
case SBC_H:
     ICount -= 4;
     M_SBC(R->HL.B.h);break;
case SBC_L:
     ICount -= 4;
     M_SBC(R->HL.B.l);break;
case SBC_A:
     ICount -= 4;
     M_SBC(R->AF.B.h);break;
case SBC_xHL:
     ICount -= 8;
     I=RdZ80(R->HL.W);M_SBC(I);break;
case SBC_BYTE:
     ICount -= 8;
     I=RdZ80(RPC.W++);M_SBC(I);break;

case XOR_B:
     ICount -= 4;
     M_XOR(R->BC.B.h);break;
case XOR_C:
     ICount -= 4;
     M_XOR(R->BC.B.l);break;
case XOR_D:
     ICount -= 4;
     M_XOR(R->DE.B.h);break;
case XOR_E:
     ICount -= 4;
     M_XOR(R->DE.B.l);break;
case XOR_H:
     ICount -= 4;
     M_XOR(R->HL.B.h);break;
case XOR_L:
     ICount -= 4;
     M_XOR(R->HL.B.l);break;
case XOR_A:
     ICount -= 4;
     R->AF.B.h=0;R->AF.B.l=Z_FLAG;break;
case XOR_xHL:
     ICount -= 8;
     I=RdZ80(R->HL.W);M_XOR(I);break;
case XOR_BYTE:
     ICount -= 8;
     I=RdZ80(RPC.W++);M_XOR(I);break;

case CP_B:
     ICount -= 4;
     M_CP(R->BC.B.h);break;
case CP_C:
     ICount -= 4;
     M_CP(R->BC.B.l);break;
case CP_D:
     ICount -= 4;
     M_CP(R->DE.B.h);break;
case CP_E:
     ICount -= 4;
     M_CP(R->DE.B.l);break;
case CP_H:
     ICount -= 4;
     M_CP(R->HL.B.h);break;
case CP_L:
     ICount -= 4;
     M_CP(R->HL.B.l);break;
case CP_A:
     ICount -= 4;
     R->AF.B.l=/*N_FLAG|Z_FLAG*/0x42;break;
case CP_xHL:
     ICount -= 8;
     I=RdZ80(R->HL.W);M_CP(I);break;
case CP_BYTE:
     ICount -= 8;
     I=RdZ80(RPC.W++);M_CP(I);break;
               
case LD_BC_WORD:
     ICount -= 12;
     M_LDWORD(BC);break;
case LD_DE_WORD:
     ICount -= 12;
     M_LDWORD(DE);break;
case LD_HL_WORD:
     ICount -= 12;
     M_LDWORD(HL);break;
case LD_SP_WORD:
     ICount -= 12;
     M_LDWORD(SP);break;

case LD_PC_HL:
     ICount -= 16;
     RPC.W=R->HL.W;break;
case LD_SP_HL:
     ICount -= 12;
     R->SP.W=R->HL.W;break;
case LD_A_xBC:
     ICount -= 8;
     R->AF.B.h=RdZ80(R->BC.W);break;
case LD_A_xDE:
     ICount -= 8;
     R->AF.B.h=RdZ80(R->DE.W);break;

case ADD_HL_BC:
     ICount -= 8;
     M_ADDW(HL,BC);break;
case ADD_HL_DE:
     ICount -= 8;
     M_ADDW(HL,DE);break;
case ADD_HL_HL:
     ICount -= 8;
     M_ADDW(HL,HL);break;
case ADD_HL_SP:
     ICount -= 8;
     M_ADDW(HL,SP);break;

case DEC_BC:
     ICount -= 8;
     R->BC.W--;break;
case DEC_DE:
     ICount -= 8;
     R->DE.W--;break;
case DEC_HL:
     ICount -= 8;
     R->HL.W--;break;
case DEC_SP:
     ICount -= 8;
    R->SP.W--;break;

case INC_BC:
     ICount -= 8;
     R->BC.W++;break;
case INC_DE:
     ICount -= 8;
     R->DE.W++;break;
case INC_HL:
     ICount -= 8;
     R->HL.W++;break;
case INC_SP:
     ICount -= 8;
     R->SP.W++;break;

case DEC_B:
     ICount -= 4;
     M_DEC(R->BC.B.h);break;
case DEC_C:
     ICount -= 4;
     M_DEC(R->BC.B.l);break;
case DEC_D:
     ICount -= 4;
     M_DEC(R->DE.B.h);break;
case DEC_E:
     ICount -= 4;
     M_DEC(R->DE.B.l);break;