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NES - mapper 50 - some fixes, almost complete

This commit is contained in:
adelikat 2012-07-28 03:37:06 +00:00
parent 7805c460d0
commit 5d521a5132
1 changed files with 6 additions and 10 deletions
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16
BizHawk.Emulation/Consoles/Nintendo/NES/Boards/Mapper50.cs
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@ -11,7 +11,7 @@ namespace BizHawk.Emulation.Consoles.Nintendo
byte prg_bank;
int prg_bank_mask_8k;
bool irq_enable;
public override bool Configure(NES.EDetectionOrigin origin)
{
//analyze board type
@ -39,16 +39,12 @@ namespace BizHawk.Emulation.Consoles.Nintendo
addr &= 0x0120;
if (addr == 0x0020)
{
//byte low = (byte)((value >> 1) & 0x03);
//byte middle = (byte)(value & 0x01);
//byte high = (byte)((value >> 3) & 0x01);
//prg_bank = (byte)(low | (middle << 2) | (high << 3));
prg_bank = (byte)(((value & 1) << 2) | ((value & 2) >> 1) | ((value & 4) >> 1) | (value & 8));
Console.WriteLine(prg_bank);
}
base.WriteEXP(addr, value);
else if (addr == 0x0120)
{
SyncIRQ(value.Bit(0));
}
}
public override byte ReadPRG(int addr)
@ -72,7 +68,7 @@ namespace BizHawk.Emulation.Consoles.Nintendo
}
}
public override byte ReadPPU(int addr)
public override byte ReadWRAM(int addr)
{
return ROM[(0x0F * 0x2000) + (addr & 0x1FFF)];
}