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minor NMITIMEN potential bug-fix, not worth mention

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Angelo Salese 2010-04-11 14:25:15 +00:00
parent 5ccd5d3efe
commit dd16f5d15f
1 changed files with 5 additions and 3 deletions
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6
src/mame/machine/snes.c
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@ -6,6 +6,8 @@
R. Belmont R. Belmont
Anthony Kruize Anthony Kruize
Angelo Salese
Fabio Priuli
Harmony Harmony
Based on the original code by Lee Hammerton (aka Savoury Snax) Based on the original code by Lee Hammerton (aka Savoury Snax)
Thanks to Anomie for invaluable technical information. Thanks to Anomie for invaluable technical information.
@ -573,7 +575,7 @@ WRITE8_HANDLER( snes_w_io )
// APU is mirrored from 2140 to 217f // APU is mirrored from 2140 to 217f
if (offset >= APU00 && offset < WMDATA) if (offset >= APU00 && offset < WMDATA)
{ {
// printf("816: %02x to APU @ %d\n", data, offset & 3); // printf("816: %02x to APU @ %d (PC=%06x)\n", data, offset & 3,cpu_get_pc(space->cpu));
spc_port_in(state->spc700, offset & 0x3, data); spc_port_in(state->spc700, offset & 0x3, data);
cpuexec_boost_interleave(space->machine, attotime_zero, ATTOTIME_IN_USEC(20)); cpuexec_boost_interleave(space->machine, attotime_zero, ATTOTIME_IN_USEC(20));
return; return;
@ -651,7 +653,7 @@ WRITE8_HANDLER( snes_w_io )
} }
break; break;
case NMITIMEN: /* Flag for v-blank, timer int. and joy read */ case NMITIMEN: /* Flag for v-blank, timer int. and joy read */
if((snes_ram[NMITIMEN] & 0x30) == 0x00) if((data & 0x30) == 0x00)
{ {
cpu_set_input_line(state->maincpu, G65816_LINE_IRQ, CLEAR_LINE ); cpu_set_input_line(state->maincpu, G65816_LINE_IRQ, CLEAR_LINE );
snes_ram[TIMEUP] = 0; // clear pending IRQ if irq is disabled here, 3x3 Eyes - Seima Korin Den behaves on this snes_ram[TIMEUP] = 0; // clear pending IRQ if irq is disabled here, 3x3 Eyes - Seima Korin Den behaves on this