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NES - Mapper 112 - fix prg bank selection, however, game still fails to run

This commit is contained in:
andres.delikat 2012-07-16 21:12:01 +00:00
parent 21558eaf11
commit ad2e9267e3
1 changed files with 25 additions and 11 deletions
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36
BizHawk.Emulation/Consoles/Nintendo/NES/Boards/Namcot1xx/Mapper112.cs
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@ -8,6 +8,16 @@ namespace BizHawk.Emulation.Consoles.Nintendo
class Mapper112 : NES.NESBoardBase class Mapper112 : NES.NESBoardBase
{ {
//TODO: this doesn't work //TODO: this doesn't work
//state
int reg_addr;
int prg_mask, chr_mask;
ByteBuffer regs = new ByteBuffer(8);
//volatile state
ByteBuffer chr_regs_1k = new ByteBuffer(8);
ByteBuffer prg_regs_8k = new ByteBuffer(4);
public override bool Configure(NES.EDetectionOrigin origin) public override bool Configure(NES.EDetectionOrigin origin)
{ {
//analyze board type //analyze board type
@ -25,19 +35,13 @@ namespace BizHawk.Emulation.Consoles.Nintendo
int num_chr_banks = (Cart.chr_size); int num_chr_banks = (Cart.chr_size);
chr_mask = num_chr_banks - 1; chr_mask = num_chr_banks - 1;
SetMirrorType(EMirrorType.Vertical); SetMirrorType(EMirrorType.Vertical);
//regs[0] = 1;
//regs[1] = 1;
return true; return true;
} }
//state
int reg_addr;
int prg_mask, chr_mask;
ByteBuffer regs = new ByteBuffer(8);
//volatile state
ByteBuffer chr_regs_1k = new ByteBuffer(8);
ByteBuffer prg_regs_8k = new ByteBuffer(4);
public void Dispose() public void Dispose()
{ {
regs.Dispose(); regs.Dispose();
@ -103,7 +107,17 @@ namespace BizHawk.Emulation.Consoles.Nintendo
public int Get_PRGBank_8K(int addr) public int Get_PRGBank_8K(int addr)
{ {
int bank_8k = addr >> 13; //int bank_8k = addr >> 13;
int bank_8k;
if (addr < 0x8000)
bank_8k = 0;
else if (addr < 0xA000)
bank_8k = 1;
else if (addr < 0xC000)
bank_8k = 2;
else
bank_8k = 3;
bank_8k = prg_regs_8k[bank_8k]; bank_8k = prg_regs_8k[bank_8k];
return bank_8k; return bank_8k;
} }