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Fix Mapper 230

This commit is contained in:
adelikat 2012-07-18 03:00:52 +00:00
parent ea60a2c9f8
commit 803833d04a
1 changed files with 6 additions and 14 deletions
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20
BizHawk.Emulation/Consoles/Nintendo/NES/Boards/Mapper230.cs
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@ -67,7 +67,6 @@ namespace BizHawk.Emulation.Consoles.Nintendo
chip 1 = 512k PRG (offset 0x20010-0xA000F)
*/
//TODO: fix reads on prg_mode = 1
//TODO: soft reset back to contra = fails
public int prg_page;
@ -108,7 +107,7 @@ namespace BizHawk.Emulation.Consoles.Nintendo
}
else
{
prg_page = value & 0x0F;
prg_page = value & 0x1F;
prg_mode = value.Bit(5);
if (value.Bit(6))
@ -132,26 +131,19 @@ namespace BizHawk.Emulation.Consoles.Nintendo
}
else
{
return ROM[(7 * 0x4000) + addr - 0x4000];
return ROM[(7 * 0x4000) + (addr & 0x3FFF)];
}
}
else
{
if (prg_mode == false)
{
return ROM[((prg_page >> 1) * 0x8000) + addr + chip1_offset]; //TODO
return ROM[((prg_page >> 1) * 0x8000) + addr + chip1_offset];
}
else //TODO:
else
{
if (addr < 0x4000)
{
return ROM[((prg_page & chip1_prg_bank_mask_16k) * 0x4000) + (addr + chip1_offset)];
}
else
{
return ROM[((prg_page & chip1_prg_bank_mask_16k) * 0x4000) + (addr - 0x4000 + chip1_offset)];
}
int page = prg_page + 8;
return ROM[(page * 0x4000) + (addr & 0x03FFF)];
}
}
}