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BizHawk
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Rename to Mapper 89 and add mapper 93 to this file. Bootgod points both ines mappers to Sunsoft2 with no distinction between the two, and all documented games for these two mappers point to another board type instead. But at least we have the mappers implemented. Next step is to get games pointing to these

This commit is contained in:
andres.delikat 2011-09-21 01:28:50 +00:00
parent 812cfc0ff1
commit 4cf66cdc95
1 changed files with 64 additions and 2 deletions
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66
BizHawk.Emulation/Consoles/Nintendo/NES/Boards/Sunsoft2.cs
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@ -4,7 +4,7 @@ using System.Diagnostics;
namespace BizHawk.Emulation.Consoles.Nintendo
{
class Sunsoft2 : NES.NESBoardBase
class MAPPER89 : NES.NESBoardBase
{
int chr;
int prg_bank_mask_16k;
@ -15,7 +15,7 @@ namespace BizHawk.Emulation.Consoles.Nintendo
{
switch (Cart.board_type)
{
case "SUNSOFT-2":
case "MAPPER89":
break;
default:
return false;
@ -77,4 +77,66 @@ namespace BizHawk.Emulation.Consoles.Nintendo
return base.ReadPPU(addr);
}
}
class MAPPER93 : NES.NESBoardBase
{
int prg_bank_mask_16k;
byte prg_bank_16k;
ByteBuffer prg_banks_16k = new ByteBuffer(2);
public override bool Configure(NES.EDetectionOrigin origin)
{
switch (Cart.board_type)
{
case "MAPPER93":
break;
default:
return false;
}
SetMirrorType(Cart.pad_h, Cart.pad_v);
prg_bank_mask_16k = (Cart.prg_size / 16) - 1;
prg_banks_16k[1] = 0xFF;
return true;
}
public override void Dispose()
{
prg_banks_16k.Dispose();
base.Dispose();
}
public override void SyncState(Serializer ser)
{
base.SyncState(ser);
ser.Sync("prg_bank_mask_16k", ref prg_bank_mask_16k);
ser.Sync("prg_bank_16k", ref prg_bank_16k);
ser.Sync("prg_banks_16k", ref prg_banks_16k);
}
void SyncPRG()
{
prg_banks_16k[0] = prg_bank_16k;
}
public override void WritePRG(int addr, byte value)
{
prg_bank_16k = (byte)((value >> 4) & 15);
SyncPRG();
if (value.Bit(0))
SetMirrorType(EMirrorType.Horizontal);
else
SetMirrorType(EMirrorType.Vertical);
}
public override byte ReadPRG(int addr)
{
int bank_16k = addr >> 14;
int ofs = addr & ((1 << 14) - 1);
bank_16k = prg_banks_16k[bank_16k];
bank_16k &= prg_bank_mask_16k;
addr = (bank_16k << 14) | ofs;
return ROM[addr];
}
}
}