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Fix Mapper 199

This commit is contained in:
alyosha-tas 2016-09-24 10:43:06 -04:00 committed by GitHub
parent 5533207161
commit 0ee9907d84
1 changed files with 140 additions and 30 deletions
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140
BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper199.cs
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@ -32,26 +32,139 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
ser.Sync("exRegs", ref exRegs); ser.Sync("exRegs", ref exRegs);
} }
protected override int Get_CHRBank_1K(int addr) public override byte ReadPPU(int addr)
{ {
if (addr < 0x400) if (addr < 0x2000)
{ {
return mmc3.regs[0]; if (addr<0x1000)
{
if (addr<0x400)
{
if (mmc3.regs[0]<8)
{
return VRAM[(mmc3.regs[0] << 10) + (addr & 0x3FF)];
} else
{
return VROM[(mmc3.regs[0] << 10) + (addr & 0x3FF)];
} }
else if (addr < 0x800) }
else if (addr<0x800)
{ {
return exRegs[2]; if (exRegs[2] < 8)
{
return VRAM[(exRegs[2] << 10) + (addr & 0x3FF)];
}
else
{
return VROM[(exRegs[2] << 10) + (addr & 0x3FF)];
}
} }
else if (addr < 0xC00) else if (addr < 0xC00)
{ {
return mmc3.regs[1]; if (mmc3.regs[1] < 8)
}
else if (addr < 0x1000)
{ {
return exRegs[3]; return VRAM[(mmc3.regs[1] << 10) + (addr & 0x3FF)];
}
else
{
return VROM[(mmc3.regs[1] << 10) + (addr & 0x3FF)];
}
}
else
{
if (exRegs[3] < 8)
{
return VRAM[(exRegs[3] << 10) + (addr & 0x3FF)];
}
else
{
return VROM[(exRegs[3] << 10) + (addr & 0x3FF)];
}
}
}
else
{
int bank_1k = Get_CHRBank_1K(addr);
if (bank_1k < 8)
{
return VRAM[(bank_1k << 10) + (addr & 0x3FF)];
}
else
{
return VROM[(bank_1k << 10) + (addr & 0x3FF)];
}
}
}
else
return base.ReadPPU(addr);
} }
return base.Get_CHRBank_1K(addr); public override void WritePPU(int addr, byte value)
{
if (addr < 0x2000)
{
if (addr < 0x1000)
{
if (addr < 0x400)
{
if (mmc3.regs[0] < 8)
{
VRAM[(mmc3.regs[0] << 10) + (addr & 0x3FF)]=value;
}
else
{
// nothing
}
}
else if (addr < 0x800)
{
if (exRegs[2] < 8)
{
VRAM[(exRegs[2] << 10) + (addr & 0x3FF)]=value;
}
else
{
// nothing
}
}
else if (addr < 0xC00)
{
if (mmc3.regs[1] < 8)
{
VRAM[(mmc3.regs[1] << 10) + (addr & 0x3FF)]=value;
}
else
{
//nothing
}
}
else
{
if (exRegs[3] < 8)
{
VRAM[(exRegs[3] << 10) + (addr & 0x3FF)]=value;
}
else
{
// nothing
}
}
}
else
{
int bank_1k = Get_CHRBank_1K(addr);
if (bank_1k < 8)
{
VRAM[(bank_1k << 10) + (addr & 0x3FF)]=value;
}
else
{
// nothing
}
}
}
else
base.WritePPU(addr, value);
} }
protected override int Get_PRGBank_8K(int addr) protected override int Get_PRGBank_8K(int addr)
@ -70,14 +183,11 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
public override void WritePRG(int addr, byte value) public override void WritePRG(int addr, byte value)
{ {
if (addr == 1) if ((addr == 1) && ((mmc3.cmd & 0x8) > 0))
{
if ((mmc3.cmd & 0x8) > 0)
{ {
exRegs[mmc3.cmd & 3] = value; exRegs[mmc3.cmd & 3] = value;
} }
} else
base.WritePRG(addr, value); base.WritePRG(addr, value);
} }
} }