| 1 |
dpavlin |
111 |
/** Z80: portable Z80 emulator *******************************/ |
| 2 |
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/** **/ |
| 3 |
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/** CodesED.h **/ |
| 4 |
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/** **/ |
| 5 |
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/** This file contains implementation for the ED table of **/ |
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/** Z80 commands. It is included from Z80.c. **/ |
| 7 |
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/** **/ |
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/** Copyright (C) Marat Fayzullin 1994-2007 **/ |
| 9 |
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/** You are not allowed to distribute this software **/ |
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/** commercially. Please, notify me, if you make any **/ |
| 11 |
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/** changes to this file. **/ |
| 12 |
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/*************************************************************/ |
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| 14 |
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/** This is a special patch for emulating BIOS calls: ********/ |
| 15 |
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case DB_FE: PatchZ80(R);break; |
| 16 |
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/*************************************************************/ |
| 17 |
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| 18 |
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case ADC_HL_BC: M_ADCW(BC);break; |
| 19 |
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case ADC_HL_DE: M_ADCW(DE);break; |
| 20 |
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case ADC_HL_HL: M_ADCW(HL);break; |
| 21 |
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case ADC_HL_SP: M_ADCW(SP);break; |
| 22 |
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| 23 |
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case SBC_HL_BC: M_SBCW(BC);break; |
| 24 |
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case SBC_HL_DE: M_SBCW(DE);break; |
| 25 |
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case SBC_HL_HL: M_SBCW(HL);break; |
| 26 |
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case SBC_HL_SP: M_SBCW(SP);break; |
| 27 |
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| 28 |
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case LD_xWORDe_HL: |
| 29 |
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J.B.l=RdZ80(R->PC.W++); |
| 30 |
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J.B.h=RdZ80(R->PC.W++); |
| 31 |
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WrZ80(J.W++,R->HL.B.l); |
| 32 |
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WrZ80(J.W,R->HL.B.h); |
| 33 |
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break; |
| 34 |
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case LD_xWORDe_DE: |
| 35 |
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J.B.l=RdZ80(R->PC.W++); |
| 36 |
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J.B.h=RdZ80(R->PC.W++); |
| 37 |
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WrZ80(J.W++,R->DE.B.l); |
| 38 |
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WrZ80(J.W,R->DE.B.h); |
| 39 |
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break; |
| 40 |
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case LD_xWORDe_BC: |
| 41 |
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J.B.l=RdZ80(R->PC.W++); |
| 42 |
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J.B.h=RdZ80(R->PC.W++); |
| 43 |
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WrZ80(J.W++,R->BC.B.l); |
| 44 |
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WrZ80(J.W,R->BC.B.h); |
| 45 |
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break; |
| 46 |
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case LD_xWORDe_SP: |
| 47 |
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J.B.l=RdZ80(R->PC.W++); |
| 48 |
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J.B.h=RdZ80(R->PC.W++); |
| 49 |
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WrZ80(J.W++,R->SP.B.l); |
| 50 |
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WrZ80(J.W,R->SP.B.h); |
| 51 |
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break; |
| 52 |
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| 53 |
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case LD_HL_xWORDe: |
| 54 |
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J.B.l=RdZ80(R->PC.W++); |
| 55 |
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J.B.h=RdZ80(R->PC.W++); |
| 56 |
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R->HL.B.l=RdZ80(J.W++); |
| 57 |
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R->HL.B.h=RdZ80(J.W); |
| 58 |
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break; |
| 59 |
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case LD_DE_xWORDe: |
| 60 |
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J.B.l=RdZ80(R->PC.W++); |
| 61 |
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J.B.h=RdZ80(R->PC.W++); |
| 62 |
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R->DE.B.l=RdZ80(J.W++); |
| 63 |
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R->DE.B.h=RdZ80(J.W); |
| 64 |
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break; |
| 65 |
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case LD_BC_xWORDe: |
| 66 |
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J.B.l=RdZ80(R->PC.W++); |
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J.B.h=RdZ80(R->PC.W++); |
| 68 |
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R->BC.B.l=RdZ80(J.W++); |
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R->BC.B.h=RdZ80(J.W); |
| 70 |
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break; |
| 71 |
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case LD_SP_xWORDe: |
| 72 |
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J.B.l=RdZ80(R->PC.W++); |
| 73 |
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J.B.h=RdZ80(R->PC.W++); |
| 74 |
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R->SP.B.l=RdZ80(J.W++); |
| 75 |
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R->SP.B.h=RdZ80(J.W); |
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break; |
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| 78 |
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case RRD: |
| 79 |
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I=RdZ80(R->HL.W); |
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J.B.l=(I>>4)|(R->AF.B.h<<4); |
| 81 |
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WrZ80(R->HL.W,J.B.l); |
| 82 |
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R->AF.B.h=(I&0x0F)|(R->AF.B.h&0xF0); |
| 83 |
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R->AF.B.l=PZSTable[R->AF.B.h]|(R->AF.B.l&C_FLAG); |
| 84 |
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break; |
| 85 |
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case RLD: |
| 86 |
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I=RdZ80(R->HL.W); |
| 87 |
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J.B.l=(I<<4)|(R->AF.B.h&0x0F); |
| 88 |
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WrZ80(R->HL.W,J.B.l); |
| 89 |
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R->AF.B.h=(I>>4)|(R->AF.B.h&0xF0); |
| 90 |
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R->AF.B.l=PZSTable[R->AF.B.h]|(R->AF.B.l&C_FLAG); |
| 91 |
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break; |
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case LD_A_I: |
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R->AF.B.h=R->I; |
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R->AF.B.l=(R->AF.B.l&C_FLAG)|(R->IFF&IFF_2? P_FLAG:0)|ZSTable[R->AF.B.h]; |
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break; |
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| 98 |
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case LD_A_R: |
| 99 |
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R->R++; |
| 100 |
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R->AF.B.h=(byte)(R->R-R->ICount); |
| 101 |
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R->AF.B.l=(R->AF.B.l&C_FLAG)|(R->IFF&IFF_2? P_FLAG:0)|ZSTable[R->AF.B.h]; |
| 102 |
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break; |
| 103 |
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| 104 |
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case LD_I_A: R->I=R->AF.B.h;break; |
| 105 |
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case LD_R_A: break; |
| 106 |
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case IM_0: R->IFF&=~(IFF_IM1|IFF_IM2);break; |
| 108 |
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case IM_1: R->IFF=(R->IFF&~IFF_IM2)|IFF_IM1;break; |
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case IM_2: R->IFF=(R->IFF&~IFF_IM1)|IFF_IM2;break; |
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| 111 |
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case RETI: |
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case RETN: if(R->IFF&IFF_2) R->IFF|=IFF_1; else R->IFF&=~IFF_1; |
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M_RET;break; |
| 114 |
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| 115 |
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case NEG: I=R->AF.B.h;R->AF.B.h=0;M_SUB(I);break; |
| 116 |
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| 117 |
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case IN_B_xC: M_IN(R->BC.B.h);break; |
| 118 |
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case IN_C_xC: M_IN(R->BC.B.l);break; |
| 119 |
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case IN_D_xC: M_IN(R->DE.B.h);break; |
| 120 |
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case IN_E_xC: M_IN(R->DE.B.l);break; |
| 121 |
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case IN_H_xC: M_IN(R->HL.B.h);break; |
| 122 |
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case IN_L_xC: M_IN(R->HL.B.l);break; |
| 123 |
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case IN_A_xC: M_IN(R->AF.B.h);break; |
| 124 |
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case IN_F_xC: M_IN(J.B.l);break; |
| 125 |
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| 126 |
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case OUT_xC_B: OutZ80(R->BC.W,R->BC.B.h);break; |
| 127 |
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case OUT_xC_C: OutZ80(R->BC.W,R->BC.B.l);break; |
| 128 |
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case OUT_xC_D: OutZ80(R->BC.W,R->DE.B.h);break; |
| 129 |
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case OUT_xC_E: OutZ80(R->BC.W,R->DE.B.l);break; |
| 130 |
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case OUT_xC_H: OutZ80(R->BC.W,R->HL.B.h);break; |
| 131 |
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case OUT_xC_L: OutZ80(R->BC.W,R->HL.B.l);break; |
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case OUT_xC_A: OutZ80(R->BC.W,R->AF.B.h);break; |
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| 134 |
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case INI: |
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WrZ80(R->HL.W++,InZ80(R->BC.W)); |
| 136 |
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R->BC.B.h--; |
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R->AF.B.l=N_FLAG|(R->BC.B.h? 0:Z_FLAG); |
| 138 |
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break; |
| 139 |
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| 140 |
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case INIR: |
| 141 |
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do |
| 142 |
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{ |
| 143 |
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WrZ80(R->HL.W++,InZ80(R->BC.W)); |
| 144 |
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R->BC.B.h--;R->ICount-=21; |
| 145 |
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} |
| 146 |
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while(R->BC.B.h&&(R->ICount>0)); |
| 147 |
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if(R->BC.B.h) { R->AF.B.l=N_FLAG;R->PC.W-=2; } |
| 148 |
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else { R->AF.B.l=Z_FLAG|N_FLAG;R->ICount+=5; } |
| 149 |
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break; |
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| 151 |
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case IND: |
| 152 |
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WrZ80(R->HL.W--,InZ80(R->BC.W)); |
| 153 |
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R->BC.B.h--; |
| 154 |
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R->AF.B.l=N_FLAG|(R->BC.B.h? 0:Z_FLAG); |
| 155 |
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break; |
| 156 |
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| 157 |
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case INDR: |
| 158 |
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do |
| 159 |
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{ |
| 160 |
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WrZ80(R->HL.W--,InZ80(R->BC.W)); |
| 161 |
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R->BC.B.h--;R->ICount-=21; |
| 162 |
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} |
| 163 |
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while(R->BC.B.h&&(R->ICount>0)); |
| 164 |
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if(R->BC.B.h) { R->AF.B.l=N_FLAG;R->PC.W-=2; } |
| 165 |
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else { R->AF.B.l=Z_FLAG|N_FLAG;R->ICount+=5; } |
| 166 |
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break; |
| 167 |
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| 168 |
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case OUTI: |
| 169 |
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I=RdZ80(R->HL.W++); |
| 170 |
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OutZ80(R->BC.W,I); |
| 171 |
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R->BC.B.h--; |
| 172 |
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R->AF.B.l=N_FLAG|(R->BC.B.h? 0:Z_FLAG)|(R->HL.B.l+I>255? (C_FLAG|H_FLAG):0); |
| 173 |
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break; |
| 174 |
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| 175 |
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case OTIR: |
| 176 |
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do |
| 177 |
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{ |
| 178 |
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I=RdZ80(R->HL.W++); |
| 179 |
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OutZ80(R->BC.W,I); |
| 180 |
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R->BC.B.h--; |
| 181 |
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R->ICount-=21; |
| 182 |
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} |
| 183 |
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while(R->BC.B.h&&(R->ICount>0)); |
| 184 |
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if(R->BC.B.h) |
| 185 |
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{ |
| 186 |
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R->AF.B.l=N_FLAG|(R->HL.B.l+I>255? (C_FLAG|H_FLAG):0); |
| 187 |
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R->PC.W-=2; |
| 188 |
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} |
| 189 |
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else |
| 190 |
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{ |
| 191 |
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R->AF.B.l=Z_FLAG|N_FLAG|(R->HL.B.l+I>255? (C_FLAG|H_FLAG):0); |
| 192 |
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R->ICount+=5; |
| 193 |
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} |
| 194 |
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break; |
| 195 |
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| 196 |
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case OUTD: |
| 197 |
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I=RdZ80(R->HL.W--); |
| 198 |
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OutZ80(R->BC.W,I); |
| 199 |
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R->BC.B.h--; |
| 200 |
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R->AF.B.l=N_FLAG|(R->BC.B.h? 0:Z_FLAG)|(R->HL.B.l+I>255? (C_FLAG|H_FLAG):0); |
| 201 |
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break; |
| 202 |
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| 203 |
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case OTDR: |
| 204 |
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do |
| 205 |
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{ |
| 206 |
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I=RdZ80(R->HL.W--); |
| 207 |
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OutZ80(R->BC.W,I); |
| 208 |
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R->BC.B.h--; |
| 209 |
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R->ICount-=21; |
| 210 |
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} |
| 211 |
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while(R->BC.B.h&&(R->ICount>0)); |
| 212 |
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if(R->BC.B.h) |
| 213 |
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{ |
| 214 |
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R->AF.B.l=N_FLAG|(R->HL.B.l+I>255? (C_FLAG|H_FLAG):0); |
| 215 |
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R->PC.W-=2; |
| 216 |
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} |
| 217 |
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else |
| 218 |
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{ |
| 219 |
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R->AF.B.l=Z_FLAG|N_FLAG|(R->HL.B.l+I>255? (C_FLAG|H_FLAG):0); |
| 220 |
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R->ICount+=5; |
| 221 |
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} |
| 222 |
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break; |
| 223 |
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| 224 |
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case LDI: |
| 225 |
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WrZ80(R->DE.W++,RdZ80(R->HL.W++)); |
| 226 |
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R->BC.W--; |
| 227 |
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R->AF.B.l=(R->AF.B.l&~(N_FLAG|H_FLAG|P_FLAG))|(R->BC.W? P_FLAG:0); |
| 228 |
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break; |
| 229 |
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| 230 |
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case LDIR: |
| 231 |
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do |
| 232 |
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{ |
| 233 |
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WrZ80(R->DE.W++,RdZ80(R->HL.W++)); |
| 234 |
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R->BC.W--;R->ICount-=21; |
| 235 |
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} |
| 236 |
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while(R->BC.W&&(R->ICount>0)); |
| 237 |
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R->AF.B.l&=~(N_FLAG|H_FLAG|P_FLAG); |
| 238 |
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if(R->BC.W) { R->AF.B.l|=N_FLAG;R->PC.W-=2; } |
| 239 |
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else R->ICount+=5; |
| 240 |
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break; |
| 241 |
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| 242 |
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case LDD: |
| 243 |
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WrZ80(R->DE.W--,RdZ80(R->HL.W--)); |
| 244 |
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R->BC.W--; |
| 245 |
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R->AF.B.l=(R->AF.B.l&~(N_FLAG|H_FLAG|P_FLAG))|(R->BC.W? P_FLAG:0); |
| 246 |
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break; |
| 247 |
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| 248 |
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case LDDR: |
| 249 |
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do |
| 250 |
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{ |
| 251 |
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WrZ80(R->DE.W--,RdZ80(R->HL.W--)); |
| 252 |
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R->BC.W--;R->ICount-=21; |
| 253 |
|
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} |
| 254 |
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while(R->BC.W&&(R->ICount>0)); |
| 255 |
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R->AF.B.l&=~(N_FLAG|H_FLAG|P_FLAG); |
| 256 |
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if(R->BC.W) { R->AF.B.l|=N_FLAG;R->PC.W-=2; } |
| 257 |
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else R->ICount+=5; |
| 258 |
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break; |
| 259 |
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| 260 |
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case CPI: |
| 261 |
|
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I=RdZ80(R->HL.W++); |
| 262 |
|
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J.B.l=R->AF.B.h-I; |
| 263 |
|
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R->BC.W--; |
| 264 |
|
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R->AF.B.l = |
| 265 |
|
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N_FLAG|(R->AF.B.l&C_FLAG)|ZSTable[J.B.l]| |
| 266 |
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((R->AF.B.h^I^J.B.l)&H_FLAG)|(R->BC.W? P_FLAG:0); |
| 267 |
|
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break; |
| 268 |
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| 269 |
|
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case CPIR: |
| 270 |
|
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do |
| 271 |
|
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{ |
| 272 |
|
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I=RdZ80(R->HL.W++); |
| 273 |
|
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J.B.l=R->AF.B.h-I; |
| 274 |
|
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R->BC.W--;R->ICount-=21; |
| 275 |
|
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} |
| 276 |
|
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while(R->BC.W&&J.B.l&&(R->ICount>0)); |
| 277 |
|
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R->AF.B.l = |
| 278 |
|
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N_FLAG|(R->AF.B.l&C_FLAG)|ZSTable[J.B.l]| |
| 279 |
|
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((R->AF.B.h^I^J.B.l)&H_FLAG)|(R->BC.W? P_FLAG:0); |
| 280 |
|
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if(R->BC.W&&J.B.l) R->PC.W-=2; else R->ICount+=5; |
| 281 |
|
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break; |
| 282 |
|
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|
| 283 |
|
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case CPD: |
| 284 |
|
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I=RdZ80(R->HL.W--); |
| 285 |
|
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J.B.l=R->AF.B.h-I; |
| 286 |
|
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R->BC.W--; |
| 287 |
|
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R->AF.B.l = |
| 288 |
|
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N_FLAG|(R->AF.B.l&C_FLAG)|ZSTable[J.B.l]| |
| 289 |
|
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((R->AF.B.h^I^J.B.l)&H_FLAG)|(R->BC.W? P_FLAG:0); |
| 290 |
|
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break; |
| 291 |
|
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| 292 |
|
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case CPDR: |
| 293 |
|
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do |
| 294 |
|
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{ |
| 295 |
|
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I=RdZ80(R->HL.W--); |
| 296 |
|
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J.B.l=R->AF.B.h-I; |
| 297 |
|
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R->BC.W--;R->ICount-=21; |
| 298 |
|
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} |
| 299 |
|
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while(R->BC.W&&J.B.l); |
| 300 |
|
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R->AF.B.l = |
| 301 |
|
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N_FLAG|(R->AF.B.l&C_FLAG)|ZSTable[J.B.l]| |
| 302 |
|
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((R->AF.B.h^I^J.B.l)&H_FLAG)|(R->BC.W? P_FLAG:0); |
| 303 |
|
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if(R->BC.W&&J.B.l) R->PC.W-=2; else R->ICount+=5; |
| 304 |
|
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break; |
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