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neshawk - fix NES mapper 31 CHR-ROM support #470

This commit is contained in:
zeromus 2015-08-10 17:12:36 -05:00
parent 8a1fd67497
commit 36f56f3530
1 changed files with 15 additions and 14 deletions
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29
BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/inlnsf.cs
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@ -26,34 +26,35 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
switch (Cart.board_type)
{
case "MAPPER031":
Cart.vram_size = 8;
break;
case "MAPPER0031-00":
AssertVram(8);
AssertChr(0, 8);
if(Cart.chr_size == 0)
Cart.vram_size = 8;
break;
case "MAPPER0031-00":
AssertVram(8);
break;
default:
return false;
}
SetMirrorType(CalculateMirrorType(Cart.pad_h, Cart.pad_v));
AssertChr(0);
AssertPrg(16, 32, 64, 128, 256, 512, 1024);
Cart.wram_size = 0;
prg_bank_mask_4k = Cart.prg_size / 4 - 1;
prg[7] = prg_bank_mask_4k;
prg[7] = prg_bank_mask_4k;
return true;
}
public override void WriteEXP(int addr, byte value)
{
if (addr >= 0x1000)
prg[addr & 0x07] = value & prg_bank_mask_4k;
else
base.WriteEXP(addr, value);
}
public override void WriteEXP(int addr, byte value)
{
if (addr >= 0x1000)
prg[addr & 0x07] = value & prg_bank_mask_4k;
else
base.WriteEXP(addr, value);
}
public override byte ReadPRG(int addr)
{
return ROM[prg[(addr & 0x7000)>>12] << 12 | addr & 0x0fff];
return ROM[prg[(addr & 0x7000) >> 12] << 12 | addr & 0x0fff];
}
}
}