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port some changes from MAME/MESS
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@ -2698,7 +2698,7 @@ int CZ80::Run(int numCycles)
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break;
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case 0x71: /* OUT (C),0 */
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cycles -= cycleTables[2][0x71];
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OUTPUT(lreg(BC), 0);
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OUTPUT(lreg(BC), lreg(0));
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break;
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case 0x72: /* SBC HL,SP */
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cycles -= cycleTables[2][0x72];
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@ -2821,6 +2821,8 @@ int CZ80::Run(int numCycles)
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cycles -= cycleTables[2][0xB0];
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acu = hreg(AF);
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BC &= 0xffff;
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if (BC == 0)
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BC = 0x10000;
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do {
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acu = GetBYTE_pp(HL);
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PutBYTE_pp(DE, acu);
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@ -2832,6 +2834,8 @@ int CZ80::Run(int numCycles)
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cycles -= cycleTables[2][0xB1];
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acu = hreg(AF);
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BC &= 0xffff;
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if (BC == 0)
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BC = 0x10000;
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do {
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temp = GetBYTE_pp(HL);
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op = --BC != 0;
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@ -2868,6 +2872,8 @@ int CZ80::Run(int numCycles)
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case 0xB8: /* LDDR */
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cycles -= cycleTables[2][0xB8];
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BC &= 0xffff;
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if (BC == 0)
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BC = 0x10000;
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do {
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acu = GetBYTE_mm(HL);
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PutBYTE_mm(DE, acu);
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@ -2879,6 +2885,8 @@ int CZ80::Run(int numCycles)
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cycles -= cycleTables[2][0xB9];
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acu = hreg(AF);
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BC &= 0xffff;
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if (BC == 0)
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BC = 0x10000;
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do {
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temp = GetBYTE_mm(HL);
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op = --BC != 0;
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@ -3505,7 +3513,7 @@ int CZ80::Run(int numCycles)
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break;
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case 0xCB: /* CB prefix */
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adr = IY + (signed char) GetBYTE_pp(pc);
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adr = adr;
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//adr = adr;
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op = GetBYTE(pc);
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cycles -= cycleTables[4][op];
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switch (op & 7) {
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