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NESHawk - progress on mapper 80

This commit is contained in:
adelikat 2012-03-04 21:20:30 +00:00
parent 1def3a8292
commit a25699fb89
1 changed files with 37 additions and 16 deletions
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53
BizHawk.Emulation/Consoles/Nintendo/NES/Boards/Taito_X1_005.cs
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@ -44,11 +44,22 @@ PRG Setup:
class TAITO_X1_005 : NES.NESBoardBase class TAITO_X1_005 : NES.NESBoardBase
{ {
int prg, chr; int prg_bank_mask, chr_bank_mask;
ByteBuffer chr_regs_2k = new ByteBuffer(6);
ByteBuffer prg_regs_8k = new ByteBuffer(4);
public override void SyncState(Serializer ser) public override void SyncState(Serializer ser)
{ {
base.SyncState(ser); base.SyncState(ser);
ser.Sync("chr_regs_2k", ref chr_regs_2k);
ser.Sync("prg_regs_8k", ref prg_regs_8k);
}
public override void Dispose()
{
base.Dispose();
chr_regs_2k.Dispose();
prg_regs_8k.Dispose();
} }
public override bool Configure(NES.EDetectionOrigin origin) public override bool Configure(NES.EDetectionOrigin origin)
@ -62,7 +73,10 @@ PRG Setup:
return false; return false;
} }
SetMirrorType(Cart.pad_h, Cart.pad_v); SetMirrorType(EMirrorType.Vertical);
chr_bank_mask = Cart.chr_size / 2 - 1;
prg_bank_mask = Cart.prg_size / 8 - 1;
prg_regs_8k[3] = 0xFF;
return true; return true;
} }
@ -78,50 +92,57 @@ PRG Setup:
break; break;
case 0x7EF0: case 0x7EF0:
chr = 0; chr_regs_2k[0] = value;
break; break;
case 0x7EF1: case 0x7EF1:
chr = 1; chr_regs_2k[1] = value;
break; break;
case 0x7EF2: case 0x7EF2:
chr = 2; chr_regs_2k[2] = value;
break; break;
case 0x7EF3: case 0x7EF3:
chr = 3; chr_regs_2k[3] = value;
break; break;
case 0x7EF4: case 0x7EF4:
chr = 4; chr_regs_2k[4] = value;
break; break;
case 0X7EF5: case 0X7EF5:
chr = 5; chr_regs_2k[5] = value;
break; break;
case 0x7EFA: //PRG Reg 0 case 0x7EFA: //PRG Reg 0
case 0x7EFB: case 0x7EFB:
prg = 0; prg_regs_8k[0] = value;
break; break;
case 0x7EFC: //PRG Reg 1 case 0x7EFC: //PRG Reg 1
case 0x7EFD: case 0x7EFD:
prg = 1; prg_regs_8k[1] = value;
break; break;
case 0x7EFE: //PRG Reg 2 case 0x7EFE: //PRG Reg 2
case 0x7EFF: case 0x7EFF:
prg = 2; prg_regs_8k[2] = value;
break; break;
} }
} }
public override byte ReadPRG(int addr) public override byte ReadPRG(int addr)
{ {
return ROM[(addr & 0x01FFF)+ (prg * 0x2000)]; int bank_8k = addr >> 13;
int ofs = addr & ((1 << 13) - 1);
bank_8k = prg_regs_8k[bank_8k];
bank_8k &= prg_bank_mask;
addr = (bank_8k << 13) | ofs;
return ROM[addr];
} }
public override byte ReadPPU(int addr) public override byte ReadPPU(int addr)
{ {
if (chr < 2) int bank_2k = addr >> 11;
return VROM[(addr & 0x7FF) + (chr * 0x800)]; int ofs = addr & ((1 << 11) - 1);
else bank_2k = chr_regs_2k[bank_2k];
return VROM[(addr & 0x3FF) + 0x800 + (chr * 0x400)]; bank_2k &= chr_bank_mask;
addr = (bank_2k << 11) | ofs;
return VROM[addr];
} }
} }
} }