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blegh

This commit is contained in:
beirich 2011-07-16 21:09:44 +00:00
parent 7445ff887c
commit 1475d55da1
2 changed files with 63 additions and 2 deletions
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3
BizHawk.Emulation/Consoles/PC Engine/Compat.txt
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@ -23,7 +23,6 @@ Madoo Granzort - Graphics issues because SGX VPC renderer is not using new fr
MML Demo - Echo channels are too loud (equal volume!)
Outrun - OK currently but timing sensitive game for future testing
Paranoia - Game hits BREAK on 3rd level. need to investigate
Populous - Game freezes on starting new game - unclear if related to battery RAM
Power Drift - Timing glitch... starting new game runs slower than it should
Power Tennis - Elaborate intro screen doesnt display right
Raiden - Sprites and BG get out of sync with current timing
@ -52,7 +51,7 @@ Side Arms - Screen is like 4 pixels too tall
Stuff I Fixed That's Not In Other Docs:
+ Street Fighter II special mapper
+ Populous has special BRAM / saveRAM (I have not yet fixed this)
+ Populous has special SaveRAM, 32k starting at page $40.
+ After Burner - There is a 1-instruction delay on changes to IRQ Control Byte taking effect
+ There is a one-instruction delay on changes to the I flag taking effect
- Affects (Not a complete list): Blodia, Body Conquest 2, Champions Forever Boxing,

62
BizHawk.Emulation/Consoles/PC Engine/MemoryMap.Populous.cs Normal file
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@ -0,0 +1,62 @@
namespace BizHawk.Emulation.Consoles.TurboGrafx
{
public partial class PCEngine
{
// The Populous HuCard is the only traditional HuCard to have battery-backed saveRAM
// built into it. There is 32k of save-RAM mapped at pages $40 - $44.
private byte[] PopulousRAM;
private byte ReadMemoryPopulous(int addr)
{
if (addr >= 0x80000 && addr < 0x88000)
return PopulousRAM[addr & 0x7FFF];
if (addr < 0xFFFFF) // read ROM
return RomData[addr % RomLength];
if (addr >= 0x1F0000 && addr < 0x1F8000) // read RAM
return Ram[addr & 0x1FFF];
if (addr >= 0x1FE000) // hardware page.
{
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.ReadTimerValue() | (IOBuffer & 0x80)); return IOBuffer; }
if (addr >= 0x1FF000 &&
addr < 0x1FF400) { IOBuffer = ReadInput(); return IOBuffer; }
if ((addr & ~1) == 0x1FF400) return IOBuffer;
if (addr == 0x1FF402) { IOBuffer = (byte)(Cpu.IRQControlByte | (IOBuffer & 0xF8)); return IOBuffer; }
if (addr == 0x1FF403) { IOBuffer = (byte)(Cpu.ReadIrqStatus() | (IOBuffer & 0xF8)); return IOBuffer; }
}
Log.Error("MEM", "UNHANDLED READ: {0:X6}", addr);
return 0xFF;
}
private void WriteMemoryPopulous(int addr, byte value)
{
if (addr >= 0x1F0000 && addr < 0x1F8000) // write RAM.
Ram[addr & 0x1FFF] = value;
else if (addr >= 0x1FE000) // hardware page.
{
if (addr < 0x1FE400) VDC1.WriteVDC(addr, value);
else if (addr < 0x1FE800) { Cpu.PendingCycles--; VCE.WriteVCE(addr, value); }
else if (addr < 0x1FEC00) { IOBuffer = value; PSG.WritePSG((byte)addr, value, Cpu.TotalExecutedCycles); }
else if (addr == 0x1FEC00) { IOBuffer = value; Cpu.WriteTimer(value); }
else if (addr == 0x1FEC01) { IOBuffer = value; Cpu.WriteTimerEnable(value); }
else if (addr >= 0x1FF000 &&
addr < 0x1FF400) { IOBuffer = value; WriteInput(value); }
else if (addr == 0x1FF402) { IOBuffer = value; Cpu.WriteIrqControl(value); }
else if (addr == 0x1FF403) { IOBuffer = value; Cpu.WriteIrqStatus(); }
else Log.Error("MEM", "unhandled hardware write [{0:X6}] : {1:X2}", addr, value);
}
else if (addr >= 0x80000 && addr < 0x88000)
PopulousRAM[addr & 0x7FFF] = value;
else
Log.Error("MEM","UNHANDLED WRITE: {0:X6}:{1:X2}",addr,value);
}
}
}