mirror of https://github.com/PCSX2/pcsx2.git
Don't do invalid GIFchain calls, fixes Dual Hearts part 2 of Issue 314.
This is part of PATH 3 masking mess, so it could fix other PATH 3 using games. Added some debug lines as well, should there be problems. git-svn-id: http://pcsx2.googlecode.com/svn/trunk@2331 96395faa-99c1-11dd-bbfe-3dabce05a288
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@ -135,7 +135,8 @@ int _GIFchain()
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static __forceinline void GIFchain()
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static __forceinline void GIFchain()
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{
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{
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Registers::Freeze();
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Registers::Freeze();
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if (gif->qwc) gscycles+= _GIFchain(); /* guessing */
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// qwc check now done outside this function
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/*if (gif->qwc)*/ gscycles+= _GIFchain(); /* guessing */
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Registers::Thaw();
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Registers::Thaw();
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}
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}
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@ -236,10 +237,14 @@ void GIFdma()
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return;
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return;
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}
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}
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//Check with Path3 masking games
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if (gif->qwc > 0) {
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GIFchain();
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GIFchain();
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CPU_INT(2, gscycles * BIAS);
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CPU_INT(2, gscycles * BIAS);
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return;
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return;
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}
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}
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else DevCon.WriteLn("GIFdma() case 1, but qwc = 0!"); //Don't do 0 GIFchain and then return
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}
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// Transfer Dn_QWC from Dn_MADR to GIF
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// Transfer Dn_QWC from Dn_MADR to GIF
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if ((gif->chcr.MOD == NORMAL_MODE) || (gif->qwc > 0)) // Normal Mode
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if ((gif->chcr.MOD == NORMAL_MODE) || (gif->qwc > 0)) // Normal Mode
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@ -250,11 +255,14 @@ void GIFdma()
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Console.WriteLn("DMA Stall Control on GIF normal");
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Console.WriteLn("DMA Stall Control on GIF normal");
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}
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}
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//Check with Path3 masking games
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if (gif->qwc > 0) {
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GIFchain(); //Transfers the data set by the switch
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GIFchain(); //Transfers the data set by the switch
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CPU_INT(2, gscycles * BIAS);
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CPU_INT(2, gscycles * BIAS);
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return;
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return;
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}
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}
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else DevCon.WriteLn("GIFdma() case 2, but qwc = 0!"); //Don't do 0 GIFchain and then return, fixes Dual Hearts
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}
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if ((gif->chcr.MOD == CHAIN_MODE) && (!gspath3done)) // Chain Mode
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if ((gif->chcr.MOD == CHAIN_MODE) && (!gspath3done)) // Chain Mode
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{
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{
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@ -267,7 +275,8 @@ void GIFdma()
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// there are still bugs, need to also check if gif->madr +16*qwc >= stadr, if not, stall
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// there are still bugs, need to also check if gif->madr +16*qwc >= stadr, if not, stall
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if (!gspath3done && ((gif->madr + (gif->qwc * 16)) > dmacRegs->stadr.ADDR) && (ptag->ID == TAG_REFS))
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if (!gspath3done && ((gif->madr + (gif->qwc * 16)) > dmacRegs->stadr.ADDR) && (ptag->ID == TAG_REFS))
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{
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{
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// stalled
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// stalled.
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// We really need to test this. Pay attention to prevcycles, as it used to trigger GIFchains in the code above. (rama)
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Console.WriteLn("GS Stall Control Source = %x, Drain = %x\n MADR = %x, STADR = %x", (psHu32(0xe000) >> 4) & 0x3, (psHu32(0xe000) >> 6) & 0x3,gif->madr, psHu32(DMAC_STADR));
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Console.WriteLn("GS Stall Control Source = %x, Drain = %x\n MADR = %x, STADR = %x", (psHu32(0xe000) >> 4) & 0x3, (psHu32(0xe000) >> 6) & 0x3,gif->madr, psHu32(DMAC_STADR));
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prevcycles = gscycles;
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prevcycles = gscycles;
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gif->tadr -= 16;
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gif->tadr -= 16;
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