diff options
| -rw-r--r-- | sys/src/games/md/cpu.c | 4 | ||||
| -rw-r--r-- | sys/src/games/md/vdp.c | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/sys/src/games/md/cpu.c b/sys/src/games/md/cpu.c index eaf19069b..fd05c980b 100644 --- a/sys/src/games/md/cpu.c +++ b/sys/src/games/md/cpu.c @@ -509,7 +509,7 @@ step(void) int n, m, d; static int cnt; - if(0 && pc == 0x1300){ + if(0 && pc == 0x23000000){ trace++; print("%x\n", curpc); } @@ -894,7 +894,7 @@ step(void) case 0x4e75: pc = pop32(); tim += 16; break; /* RTS */ case 0x4e76: if((rS & FLAGV) != 0) trap(7, curpc); tim += 4; break; /* TRAPV */ case 0x4e77: /* RTR */ - rS = rS & 0xff00 | fetch16() & 0xff; + rS = rS & 0xff00 | pop16() & 0xff; pc = pop32(); tim += 20; break; diff --git a/sys/src/games/md/vdp.c b/sys/src/games/md/vdp.c index a16f08841..6c63a984a 100644 --- a/sys/src/games/md/vdp.c +++ b/sys/src/games/md/vdp.c @@ -326,7 +326,7 @@ vdpstep(void) if(vdpy == 0 || vdpy >= 225) hctr = reg[HORCTR]; else - if(--hctr == 0){ + if(hctr-- == 0){ if((reg[MODE1] & IE1) != 0) irq |= INTHOR; hctr = reg[HORCTR]; |