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games/md: small fixes

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This commit is contained in:
aiju 2014-06-14 20:18:57 +02:00
parent 37a5b4e9c3
commit e30fc1fbdf
2 changed files with 3 additions and 3 deletions
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4
sys/src/games/md/cpu.c
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@ -509,7 +509,7 @@ step(void)
int n, m, d; int n, m, d;
static int cnt; static int cnt;
if(0 && pc == 0x1300){ if(0 && pc == 0x23000000){
trace++; trace++;
print("%x\n", curpc); print("%x\n", curpc);
} }
@ -894,7 +894,7 @@ step(void)
case 0x4e75: pc = pop32(); tim += 16; break; /* RTS */ case 0x4e75: pc = pop32(); tim += 16; break; /* RTS */
case 0x4e76: if((rS & FLAGV) != 0) trap(7, curpc); tim += 4; break; /* TRAPV */ case 0x4e76: if((rS & FLAGV) != 0) trap(7, curpc); tim += 4; break; /* TRAPV */
case 0x4e77: /* RTR */ case 0x4e77: /* RTR */
rS = rS & 0xff00 | fetch16() & 0xff; rS = rS & 0xff00 | pop16() & 0xff;
pc = pop32(); pc = pop32();
tim += 20; tim += 20;
break; break;

2
sys/src/games/md/vdp.c
View file

@ -326,7 +326,7 @@ vdpstep(void)
if(vdpy == 0 || vdpy >= 225) if(vdpy == 0 || vdpy >= 225)
hctr = reg[HORCTR]; hctr = reg[HORCTR];
else else
if(--hctr == 0){ if(hctr-- == 0){
if((reg[MODE1] & IE1) != 0) if((reg[MODE1] & IE1) != 0)
irq |= INTHOR; irq |= INTHOR;
hctr = reg[HORCTR]; hctr = reg[HORCTR];