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timing fix for PCEngine from Barry @ forum

This commit is contained in:
dinkc64 2014-08-03 20:13:41 +00:00
parent 569125abfb
commit 5cd15b17cb
1 changed files with 9 additions and 4 deletions
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13
src/burn/drv/pce/pce.cpp
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@ -625,15 +625,20 @@ INT32 PCEFrame()
PCECompileInputs(); PCECompileInputs();
INT32 nCyclesTotal = (INT32)((INT64)7159090 * nBurnCPUSpeedAdjust / (0x0100 * 60)); INT32 nCyclesTotal = (INT32)((INT64)7159090 * nBurnCPUSpeedAdjust / (0x0100 * 60));
INT32 nCyclesDone = 0;
INT32 nCyclesSegment = 0;
h6280Open(0); h6280Open(0);
for (INT32 i = 0; i < 262; i++) for (INT32 i = 0; i < 262; i++)
{ {
h6280Run(nCyclesTotal / 262); INT32 nNext;
nNext = (i + 1) * nCyclesTotal / 262;
nCyclesSegment = nNext - nCyclesDone;
nCyclesDone += h6280Run(nCyclesSegment);
interrupt(); interrupt();
} }
if (pBurnSoundOut) { if (pBurnSoundOut) {
c6280_update(pBurnSoundOut, nBurnSoundLen); c6280_update(pBurnSoundOut, nBurnSoundLen);
} }