static const u32 CountToTarget = 1;
static const u32 FrameRate[] = { 60, 50 };
-static const u32 VBlankStart[] = { 240, 256 };
static const u32 HSyncTotal[] = { 263, 313 };
static const u32 SpuUpdInterval[] = { 32, 32 };
+#define VBlankStart 240
#define VERBOSE_LEVEL 0
static const s32 VerboseLevel = VERBOSE_LEVEL;
{
u32 count;
+ rcnts[index].mode |= RcUnknown10;
+
if( rcnts[index].counterState == CountToTarget )
{
+ count = psxRegs.cycle;
+ count -= rcnts[index].cycleStart;
+ if( rcnts[index].rate > 1 )
+ count /= rcnts[index].rate;
if( rcnts[index].mode & RcCountToTarget )
- {
- count = psxRegs.cycle;
- count -= rcnts[index].cycleStart;
- if (rcnts[index].rate > 1)
- count /= rcnts[index].rate;
count -= rcnts[index].target;
- }
- else
- {
- count = _psxRcntRcount( index );
- }
_psxRcntWcount( index, count );
}
rcnts[index].mode |= RcCountEqTarget;
+
+ if( count < 0xffff ) // special case, overflow too?
+ return;
}
- else if( rcnts[index].counterState == CountToOverflow )
+
+ if( rcnts[index].counterState == CountToOverflow )
{
count = psxRegs.cycle;
count -= rcnts[index].cycleStart;
rcnts[index].mode |= RcOverflow;
}
-
- rcnts[index].mode |= RcUnknown10;
-
- psxRcntSet();
}
void psxRcntUpdate()
}
// VSync irq.
- if( hSyncCount == VBlankStart[Config.PsxType] )
+ if( hSyncCount == VBlankStart )
{
- if( !(HW_GPU_STATUS & PSXGPU_ILACE) )
- HW_GPU_STATUS |= PSXGPU_LCF;
-
+ HW_GPU_STATUS &= ~PSXGPU_LCF;
+ GPU_vBlank( 1, 0 );
setIrq( 0x01 );
EmuUpdate();
hSyncCount = 0;
frame_counter++;
- HW_GPU_STATUS &= ~PSXGPU_LCF;
- if( HW_GPU_STATUS & PSXGPU_ILACE )
+ gpuSyncPluginSR();
+ if( (HW_GPU_STATUS & PSXGPU_ILACE_BITS) == PSXGPU_ILACE_BITS )
HW_GPU_STATUS |= frame_counter << 31;
+ GPU_vBlank( 0, HW_GPU_STATUS >> 31 );
}
// Schedule next call, in hsyncs
hsync_steps = SpuUpdInterval[Config.PsxType] - spuSyncCount;
- next_vsync = VBlankStart[Config.PsxType] - hSyncCount; // ok to overflow
+ next_vsync = VBlankStart - hSyncCount; // ok to overflow
next_lace = HSyncTotal[Config.PsxType] - hSyncCount;
if( next_vsync && next_vsync < hsync_steps )
hsync_steps = next_vsync;
base_cycle += hsync_steps * 8791293;
rcnts[3].cycle = base_cycle >> 12;
base_cycle &= 0xfff;
- psxRcntSet();
}
+ psxRcntSet();
+
#ifndef NDEBUG
DebugVSync();
#endif