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fixed cpu_getiloops() which was not returning the correct value.

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This fixes
01780: pingpong: Level select arrow's not displayed 
and possibly other timing related bugs.
This commit is contained in:
Nicola Salmoria 2008-05-26 08:31:34 +00:00
parent 1b1202134a
commit 246885e3c2
1 changed files with 8 additions and 4 deletions
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12
src/emu/cpuexec.c
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@ -777,7 +777,7 @@ static void on_vblank(const device_config *device, int vblank_state)
/* start the interrupt counter */
if (!(cpu[cpunum].suspend & SUSPEND_REASON_DISABLE))
cpu[cpunum].iloops = config->vblank_interrupts_per_frame - 1;
cpu[cpunum].iloops = 0;
else
cpu[cpunum].iloops = -1;
@ -799,7 +799,7 @@ static void on_vblank(const device_config *device, int vblank_state)
if (!cpunum_is_suspended(cpunum, SUSPEND_REASON_HALT | SUSPEND_REASON_RESET | SUSPEND_REASON_DISABLE))
{
cpuintrf_push_context(cpunum);
(*device->machine->config->cpu[cpunum].vblank_interrupt)(device->machine, cpunum);
(*config->vblank_interrupt)(device->machine, cpunum);
cpuintrf_pop_context();
}
@ -824,6 +824,10 @@ static void on_vblank(const device_config *device, int vblank_state)
static TIMER_CALLBACK( trigger_partial_frame_interrupt )
{
int cpunum = param;
const cpu_config *config = machine->config->cpu + cpunum;
if (cpu[cpunum].iloops == 0)
cpu[cpunum].iloops = config->vblank_interrupts_per_frame;
cpu[cpunum].iloops--;
@ -831,12 +835,12 @@ static TIMER_CALLBACK( trigger_partial_frame_interrupt )
if (!cpunum_is_suspended(cpunum, SUSPEND_REASON_HALT | SUSPEND_REASON_RESET | SUSPEND_REASON_DISABLE))
{
cpuintrf_push_context(cpunum);
(*machine->config->cpu[cpunum].vblank_interrupt)(machine, cpunum);
(*config->vblank_interrupt)(machine, cpunum);
cpuintrf_pop_context();
}
/* more? */
if (cpu[cpunum].iloops > 0)
if (cpu[cpunum].iloops > 1)
timer_adjust_oneshot(cpu[cpunum].partial_frame_timer, cpu[cpunum].partial_frame_period, cpunum);
}