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* Fixed some bugs in the MB88xx CPU core [Alex Jackson]

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This commit is contained in:
Phil Bennett 2010-07-15 10:53:29 +00:00
parent 81f4046df8
commit 616ea71eb6
1 changed files with 5 additions and 5 deletions
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10
src/emu/cpu/mb88xx/mb88xx.c
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@ -245,7 +245,7 @@ static int pla( mb88_state *cpustate, int inA, int inB )
static void set_irq_line(mb88_state *cpustate, int state) static void set_irq_line(mb88_state *cpustate, int state)
{ {
/* on falling edge trigger interrupt */ /* on falling edge trigger interrupt */
if ( (cpustate->pio & 0x04) && cpustate->nf && state == CLEAR_LINE ) if ( (cpustate->pio & 0x04) && cpustate->nf == 0 && state != CLEAR_LINE )
{ {
cpustate->pending_interrupt |= INT_CAUSE_EXTERNAL; cpustate->pending_interrupt |= INT_CAUSE_EXTERNAL;
} }
@ -593,7 +593,7 @@ static CPU_EXECUTE( mb88 )
case 0x24: /* tstr ZCS:..x */ case 0x24: /* tstr ZCS:..x */
arg = READPORT( MB88_PORTR0+(cpustate->Y/4) ); arg = READPORT( MB88_PORTR0+(cpustate->Y/4) );
cpustate->st = ( arg & ( 1 << (cpustate->Y%4) ) ) ? 1 : 0; cpustate->st = ( arg & ( 1 << (cpustate->Y%4) ) ) ? 0 : 1;
break; break;
case 0x25: /* tsti ZCS:..x */ case 0x25: /* tsti ZCS:..x */
@ -679,7 +679,7 @@ static CPU_EXECUTE( mb88 )
case 0x38: case 0x39: case 0x3a: case 0x3b: /* tbit ZCS:... */ case 0x38: case 0x39: case 0x3a: case 0x3b: /* tbit ZCS:... */
arg = RDMEM(GETEA()); arg = RDMEM(GETEA());
cpustate->st = ( arg & (1 << (opcode&3) ) ) ? 1 : 0; cpustate->st = ( arg & (1 << (opcode&3) ) ) ? 0 : 1;
break; break;
case 0x3c: /* rti ZCS:... */ case 0x3c: /* rti ZCS:... */
@ -729,11 +729,11 @@ static CPU_EXECUTE( mb88 )
case 0x48: case 0x49: case 0x4a: case 0x4b: /* tstD ZCS:..x */ case 0x48: case 0x49: case 0x4a: case 0x4b: /* tstD ZCS:..x */
arg = READPORT(MB88_PORTR2); arg = READPORT(MB88_PORTR2);
cpustate->st = (arg & (1 << (opcode&3))) ? 1 : 0; cpustate->st = (arg & (1 << (opcode&3))) ? 0 : 1;
break; break;
case 0x4c: case 0x4d: case 0x4e: case 0x4f: /* tba ZCS:..x */ case 0x4c: case 0x4d: case 0x4e: case 0x4f: /* tba ZCS:..x */
cpustate->st = (cpustate->A & (1 << (opcode&3))) ? 1 : 0; cpustate->st = (cpustate->A & (1 << (opcode&3))) ? 0 : 1;
break; break;
case 0x50: case 0x51: case 0x52: case 0x53: /* xd ZCS:x.. */ case 0x50: case 0x51: case 0x52: case 0x53: /* xd ZCS:x.. */