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nes: sunsoft4: partial support for "UNIF_NES-NTBROM". "Nantettatte!! Baseball" UNIF dumps now boot.

This commit is contained in:
goyuken 2012-10-27 15:11:07 +00:00
parent fce1ffcce2
commit b1039a6bf9
1 changed files with 10 additions and 0 deletions
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10
BizHawk.Emulation/Consoles/Nintendo/NES/Boards/Sunsoft4.cs
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@ -51,6 +51,13 @@ namespace BizHawk.Emulation.Consoles.Nintendo
case "SUNSOFT-4": case "SUNSOFT-4":
AssertPrg(128); AssertChr(128,256); AssertVram(0); AssertWram(0,8); AssertPrg(128); AssertChr(128,256); AssertVram(0); AssertWram(0,8);
break; break;
case "UNIF_NES-NTBROM":
AssertPrg(128 + 16); AssertChr(128); Cart.wram_size = 8; Cart.vram_size = 0;
/* The actual cart had 128k prg, with a small slot on the top that can load an optional daughterboard.
* The UNIF dump has this as an extra 16k prg lump. I don't know how this lump is actually used,
* though.
*/
break;
default: default:
return false; return false;
} }
@ -58,6 +65,8 @@ namespace BizHawk.Emulation.Consoles.Nintendo
SetMirrorType(EMirrorType.Vertical); SetMirrorType(EMirrorType.Vertical);
prg_regs_16k[1] = 0xFF; prg_regs_16k[1] = 0xFF;
prg_bank_mask = Cart.prg_size / 16 - 1; prg_bank_mask = Cart.prg_size / 16 - 1;
if (Cart.prg_size == 128 + 16)
prg_bank_mask = 7; // ignore extra prg lump
chr_bank_mask = Cart.chr_size / 2 - 1; chr_bank_mask = Cart.chr_size / 2 - 1;
nt_bank_mask = Cart.chr_size - 1; nt_bank_mask = Cart.chr_size - 1;
return true; return true;
@ -105,6 +114,7 @@ namespace BizHawk.Emulation.Consoles.Nintendo
public override void WritePRG(int addr, byte value) public override void WritePRG(int addr, byte value)
{ {
//Console.WriteLine("W{0:x4} {1:x2}", addr + 0x8000, value);
switch (addr & 0xF000) switch (addr & 0xF000)
{ {
case 0x0000: //$8000 case 0x0000: //$8000