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PCE: Fix timer issue causing Battle Royale to break

This commit is contained in:
beirich 2011-03-18 04:24:31 +00:00
parent 5c9ee84ed4
commit d211a6d3c5
5 changed files with 12 additions and 4 deletions
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9
BizHawk.Emulation/CPUs/HuC6280/HuC6280.cs
View File

@ -228,6 +228,15 @@ namespace BizHawk.Emulation.CPUs.H6280
TimerEnabled = (value & 1) == 1;
}
public byte ReadTimerValue()
{
if (TimerTickCounter + 5 > 1024)
{
return (byte) ((TimerValue - 1) & 0x7F);
}
return TimerValue;
}
// ==== Flags ====
/// <summary>Carry Flag</summary>

1
BizHawk.Emulation/Consoles/PC Engine/Compat.txt
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@ -11,7 +11,6 @@ General:
Air Zonk - Fully playable, doesn't freeze, but some gfx/timing issues
Battle Ace - Some gfx glitches
Battle Royale - STILLL Doesnt boot
Chase HQ - Press start -"O" sprite gets left on screen. probably timing on SATB DMA
Cross Wiber - Minor; Raster on wrong line
Davis Cup Tennis - Some timing issue, splash screen is too slow

2
BizHawk.Emulation/Consoles/PC Engine/MemoryMap.SF2.cs
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@ -23,7 +23,7 @@
if (addr < 0x1FE400) return VDC1.ReadVDC(addr);
if (addr < 0x1FE800) { Cpu.PendingCycles--; return VCE.ReadVCE(addr); }
if (addr < 0x1FEC00) return IOBuffer;
if (addr < 0x1FF000) { IOBuffer = (byte) (Cpu.TimerValue | (IOBuffer & 0x80)); return IOBuffer; }
if (addr < 0x1FF000) { IOBuffer = (byte) (Cpu.ReadTimerValue() | (IOBuffer & 0x80)); return IOBuffer; }
if (addr >= 0x1FF000 &&
addr < 0x1FF400) { IOBuffer = ReadInput(); return IOBuffer; }
if ((addr & ~1) == 0x1FF400) return IOBuffer;

2
BizHawk.Emulation/Consoles/PC Engine/MemoryMap.SuperGrafx.cs
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@ -26,7 +26,7 @@
if (addr < 0x1FE800) { Cpu.PendingCycles--; return VCE.ReadVCE(addr); }
if (addr < 0x1FEC00) return IOBuffer;
if (addr < 0x1FF000) { IOBuffer = (byte)(Cpu.TimerValue | (IOBuffer & 0x80)); return IOBuffer; }
if (addr < 0x1FF000) { IOBuffer = (byte)(Cpu.ReadTimerValue() | (IOBuffer & 0x80)); return IOBuffer; }
if (addr >= 0x1FF000 &&
addr < 0x1FF400) { IOBuffer = ReadInput(); return IOBuffer; }
if ((addr & ~1) == 0x1FF400) return IOBuffer;

2
BizHawk.Emulation/Consoles/PC Engine/MemoryMap.cs
View File

@ -17,7 +17,7 @@
if (addr < 0x1FE400) return VDC1.ReadVDC(addr);
if (addr < 0x1FE800) { Cpu.PendingCycles--; return VCE.ReadVCE(addr); }
if (addr < 0x1FEC00) return IOBuffer;
if (addr < 0x1FF000) { IOBuffer = (byte) (Cpu.TimerValue | (IOBuffer & 0x80)); return IOBuffer; }
if (addr < 0x1FF000) { IOBuffer = (byte) (Cpu.ReadTimerValue() | (IOBuffer & 0x80)); return IOBuffer; }
if (addr >= 0x1FF000 &&
addr < 0x1FF400) { IOBuffer = ReadInput(); return IOBuffer; }
if ((addr & ~1) == 0x1FF400) return IOBuffer;