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minor NMITIMEN potential bug-fix, not worth mention

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This commit is contained in:
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
Anthony Kruize
Angelo Salese
Fabio Priuli
Harmony
Based on the original code by Lee Hammerton (aka Savoury Snax)
Thanks to Anomie for invaluable technical information.
@ -573,7 +575,7 @@ WRITE8_HANDLER( snes_w_io )
// APU is mirrored from 2140 to 217f
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);
cpuexec_boost_interleave(space->machine, attotime_zero, ATTOTIME_IN_USEC(20));
return;
@ -651,7 +653,7 @@ WRITE8_HANDLER( snes_w_io )
}
break;
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 );
snes_ram[TIMEUP] = 0; // clear pending IRQ if irq is disabled here, 3x3 Eyes - Seima Korin Den behaves on this