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Sif: Limit/Mask transfer size to 1mb-16, thanks to jpd002 (Play!) for the fix! 

Fixes #643 Gregory Horror Show, which seems to be playable (from nothing!)
This commit is contained in:
refractionpcsx2 2015-10-08 20:02:15 +01:00
parent 9b988ee12d
commit 31ee576d6a
2 changed files with 8 additions and 2 deletions
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4
pcsx2/Sif0.cpp
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@ -134,7 +134,9 @@ static __fi bool ProcessIOPTag()
// We're only copying the first 24 bits. Bits 30 and 31 (checked below) are Stop/IRQ bits.
hw_dma9.madr = sif0data & 0xFFFFFF;
sif0.iop.counter = sif0words;
if (sif0words > 0xFFFFC) DevCon.Warning("SIF0 Overrun %x", sif0words);
//Maximum transfer amount 1mb-16 also masking out top part which is a "Mode" cache stuff, we don't care :)
sif0.iop.counter = sif0words & 0xFFFFC;
// IOP tags have an IRQ bit and an End of Transfer bit:
if (sif0tag.IRQ || (sif0tag.ID & 4)) sif0.iop.end = true;

6
pcsx2/Sif1.cpp
View File

@ -125,7 +125,11 @@ static __fi bool SIFIOPReadTag()
// Only use the first 24 bits.
hw_dma10.madr = sif1data & 0xffffff;
sif1.iop.counter = sif1words;
if (sif1words > 0xFFFFC) DevCon.Warning("SIF1 Overrun %x", sif1words);
//Maximum transfer amount 1mb-16 also masking out top part which is a "Mode" cache stuff, we don't care :)
sif1.iop.counter = sif1words & 0xFFFFC;
if (sif1tag.IRQ || (sif1tag.ID & 4)) sif1.iop.end = true;
return true;