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fix 172 

and presumably others due to bad reg writes
This commit is contained in:
alyosha-tas 2016-09-17 12:38:03 -04:00 committed by GitHub
parent 9b46a6cb3f
commit d4a467815c
1 changed files with 10 additions and 3 deletions
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13
BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper132.cs
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@ -35,6 +35,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
prg_mask = Cart.prg_size / 32 - 1; prg_mask = Cart.prg_size / 32 - 1;
chr_mask = Cart.chr_size / 8 - 1; chr_mask = Cart.chr_size / 8 - 1;
SetMirrorType(Cart.pad_h, Cart.pad_v); SetMirrorType(Cart.pad_h, Cart.pad_v);
//SetMirrorType(EMirrorType.Vertical);
return true; return true;
} }
@ -45,7 +46,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
if (is172) if (is172)
{ {
chr = (((value ^ reg[2]) >> 3) & 2) | (((value ^ reg[2]) >> 5) & 1); chr = ((value ^ reg[2]) >> 3 & 2) | ((value ^ reg[2]) >> 5 & 1);
} }
else else
{ {
@ -63,19 +64,25 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
public override void WriteEXP(int addr, byte value) public override void WriteEXP(int addr, byte value)
{ {
if (addr <= 0x103 && addr >= 0x100) if (addr <= 0x103 && addr >= 0x100)
reg[addr&0x03] = (byte)(value & 0x0f); reg[addr & 0x03] = value;
//reg[addr&0x03] = (byte)(value & 0x0f);
} }
public override byte ReadEXP(int addr) public override byte ReadEXP(int addr)
{ {
if ((addr & 0x100) != 0) /*if ((addr & 0x100) != 0)
return (byte)((NES.DB & (is173 ? 0x01 : 0xf0)) | reg[2]); return (byte)((NES.DB & (is173 ? 0x01 : 0xf0)) | reg[2]);
else if ((addr & 0x1000) == 0) else if ((addr & 0x1000) == 0)
return NES.DB; return NES.DB;
else else
return 0xff; return 0xff;
*/
if (addr==0x100)
return (byte)((reg[1] ^ reg[2]) | (0x40 | (is173 ? 0x01 : 0x00)));
else
return NES.DB;
} }
public override byte ReadPRG(int addr) public override byte ReadPRG(int addr)