/** VGB: portable GameBoy emulator ***************************/
/**                                                         **/
/**                         CodesED.h                       **/
/**                                                         **/
/** This file contains implementation for the ED table of   **/
/** Z80 commands. It is included from Z80.c.                **/
/**                                                         **/
/** Copyright (C) Marat Fayzullin 1994,1995                 **/
/**     You are not allowed to distribute this software     **/
/**     commercially. Please, notify me, if you make any    **/
/**     changes to this file.                               **/
/*************************************************************/

case ADC_HL_BC: M_ADCW(BC);break;
case ADC_HL_DE: M_ADCW(DE);break;
case ADC_HL_HL: M_ADCW(HL);break;
case ADC_HL_SP: M_ADCW(SP);break;

case SBC_HL_BC: M_SBCW(BC);break;
case SBC_HL_DE: M_SBCW(DE);break;
case SBC_HL_HL: M_SBCW(HL);break;
case SBC_HL_SP: M_SBCW(SP);break;

case LD_xWORDe_HL:
  J.B.l=*(Addr+(R.PC.W++));
  J.B.h=*(Addr+(R.PC.W++));
  M_WRMEM(J.W,R.HL.B.l);J.W++;
  M_WRMEM(J.W,R.HL.B.h);
  break;
case LD_xWORDe_DE:
  J.B.l=*(Addr+(R.PC.W++));
  J.B.h=*(Addr+(R.PC.W++));
  M_WRMEM(J.W,R.DE.B.l);J.W++;
  M_WRMEM(J.W,R.DE.B.h);
  break;
case LD_xWORDe_BC:
  J.B.l=*(Addr+(R.PC.W++));
  J.B.h=*(Addr+(R.PC.W++));
  M_WRMEM(J.W,R.BC.B.l);J.W++;
  M_WRMEM(J.W,R.BC.B.h);
  break;
case LD_xWORDe_SP:
  J.B.l=*(Addr+(R.PC.W++));
  J.B.h=*(Addr+(R.PC.W++));
  M_WRMEM(J.W,R.SP.B.l);J.W++;
  M_WRMEM(J.W,R.SP.B.h);
  break;

case LD_HL_xWORDe:
  J.B.l=*(Addr+(R.PC.W++));
  J.B.h=*(Addr+(R.PC.W++));
  R.HL.B.l=*(Addr+(J.W++));
  R.HL.B.h=*(Addr+J.W);
  break;
case LD_DE_xWORDe:
  J.B.l=*(Addr+(R.PC.W++));
  J.B.h=*(Addr+(R.PC.W++));
  R.DE.B.l=*(Addr+(J.W++));
  R.DE.B.h=*(Addr+J.W);
  break;
case LD_BC_xWORDe:
  J.B.l=*(Addr+(R.PC.W++));
  J.B.h=*(Addr+(R.PC.W++));
  R.BC.B.l=*(Addr+(J.W++));
  R.BC.B.h=*(Addr+J.W);
  break;
case LD_SP_xWORDe:
  J.B.l=*(Addr+(R.PC.W++));
  J.B.h=*(Addr+(R.PC.W++));
  R.SP.B.l=*(Addr+(J.W++));
  R.SP.B.h=*(Addr+J.W);
  break;

case RRD:
  I=*(Addr+R.HL.W);
  J.B.l=(I>>4)|(R.AF.B.h<<4);
  M_WRMEM(R.HL.W,J.B.l);
  R.AF.B.h=(I&0x0F)|(R.AF.B.h&0xF0);
  R.AF.B.l=(R.AF.B.l&C_FLAG)|(R.AF.B.h? 0:Z_FLAG)|(R.AF.B.h&S_FLAG);
  break;
case RLD:
  I=*(Addr+R.HL.W);
  J.B.l=(I<<4)|(R.AF.B.h&0x0F);
  M_WRMEM(R.HL.W,J.B.l);
  R.AF.B.h=(I>>4)|(R.AF.B.h&0xF0);
  R.AF.B.l=(R.AF.B.l&C_FLAG)|(R.AF.B.h? 0:Z_FLAG)|(R.AF.B.h&S_FLAG);
  break;

case LD_A_I:
  R.AF.B.h=R.I;
  R.AF.B.l=(R.AF.B.l&C_FLAG)|(R.AF.B.h? 0:Z_FLAG)|(R.AF.B.h&S_FLAG);
  break;

case LD_A_R:
#ifdef INTERRUPTS
  R.AF.B.h=(byte)(-Cnt&0xFF);
#endif
  R.AF.B.l=(R.AF.B.l&C_FLAG)|(R.AF.B.h? 0:Z_FLAG)|(R.AF.B.h&S_FLAG);
  break;

case LD_I_A:   R.I=R.AF.B.h;break;
case LD_R_A:   break;

case IM_0:     R.IFF&=0xF9;break;
case IM_1:     R.IFF=(R.IFF&0xF9)|2;break;
case IM_2:     R.IFF=(R.IFF&0xF9)|4;break;

case RETI:     R.IFF|=0x01;M_RET;break;
case RETN:     R.IFF|=0x01;M_RET;break;

case NEG:      I=R.AF.B.h;R.AF.B.h=0;M_SUB(I);break;

case LDI:
  I=*(Addr+(R.HL.W++));M_WRMEM(R.DE.W,I);R.DE.W++;R.BC.W--;
  R.AF.B.l=(R.AF.B.l&~(N_FLAG|H_FLAG));
  break;

case LDIR:
#ifdef INTERRUPTS
  Cnt=(Cnt>R.BC.W)? Cnt-R.BC.W:1;
#endif
  do
  { I=*(Addr+(R.HL.W++));M_WRMEM(R.DE.W,I);R.DE.W++;R.BC.W--; }
  while(R.BC.W);
  R.AF.B.l&=~(N_FLAG|H_FLAG);break;

case LDD:
  I=*(Addr+(R.HL.W--));M_WRMEM(R.DE.W,I);R.DE.W--;R.BC.W--;
  R.AF.B.l=(R.AF.B.l&~(N_FLAG|H_FLAG));
  break;

case LDDR:
#ifdef INTERRUPTS
  Cnt=(Cnt>R.BC.W)? Cnt-R.BC.W:1;
#endif
  do
  { I=*(Addr+(R.HL.W--));M_WRMEM(R.DE.W,I);R.DE.W--;R.BC.W--; }
  while(R.BC.W);
  R.AF.B.l&=~(N_FLAG|H_FLAG);break;

case CPI:
  I=*(Addr+(R.HL.W++));J.B.l=R.AF.B.h-I;R.BC.W--;
  R.AF.B.l=
    N_FLAG|(R.AF.B.l&C_FLAG)|(J.B.l? 0:Z_FLAG)|(J.B.l&S_FLAG)|
    ((R.AF.B.h^I^J.B.l)&H_FLAG);
  break;

case CPIR:
  do
  { I=*(Addr+(R.HL.W++));J.B.l=R.AF.B.h-I;R.BC.W--; }  
  while(R.BC.W&&J.B.l);
  R.AF.B.l=
    N_FLAG|(R.AF.B.l&C_FLAG)|(J.B.l? 0:Z_FLAG)|(J.B.l&S_FLAG)|
    ((R.AF.B.h^I^J.B.l)&H_FLAG);
  break;  

case CPD:
  I=*(Addr+(R.HL.W--));J.B.l=R.AF.B.h-I;R.BC.W--;
  R.AF.B.l=
    N_FLAG|(R.AF.B.l&C_FLAG)|(J.B.l? 0:Z_FLAG)|(J.B.l&S_FLAG)|
    ((R.AF.B.h^I^J.B.l)&H_FLAG);
  break;

case CPDR:
  do
  { I=*(Addr+(R.HL.W--));J.B.l=R.AF.B.h-I;R.BC.W--; }
  while(R.BC.W&&J.B.l);
  R.AF.B.l=
    N_FLAG|(R.AF.B.l&C_FLAG)|(J.B.l? 0:Z_FLAG)|(J.B.l&S_FLAG)|
    ((R.AF.B.h^I^J.B.l)&H_FLAG);
  break;