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NESHawk - according to FCEUX, mapper 79 seems to do Writes to PRG to set chr banks, fixes Puzzle (Unl)

This commit is contained in:
adelikat 2015-08-16 11:49:24 -04:00
parent b1b96ad070
commit b26fe36cee
1 changed files with 16 additions and 4 deletions
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20
BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/AVE-NINA.cs
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@ -12,7 +12,6 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
//state
IntBuffer chr_banks_4k = new IntBuffer(2);
int prg_bank_32k;
public override void Dispose()
{
base.Dispose();
@ -99,7 +98,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
//configuration
int prg_bank_mask_32k, chr_bank_mask_8k;
bool mirror_control_enabled;
bool isMapper79 = false;
//state
int chr_bank_8k, prg_bank_32k;
@ -108,6 +107,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
base.SyncState(ser);
ser.Sync("chr_bank_8k", ref chr_bank_8k);
ser.Sync("prg_bank_32k", ref prg_bank_32k);
ser.Sync("isMapper79", ref isMapper79);
}
public override bool Configure(NES.EDetectionOrigin origin)
@ -115,7 +115,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
//configure
switch (Cart.board_type)
{
case "MAPPER079":
case "MAPPER079": // Puzzle (Unl)
isMapper79 = true;
AssertPrg(32, 64); AssertChr(32, 64);
break;
case "TXC-74*138/175": // untested
@ -139,7 +140,6 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
chr_bank_mask_8k = Cart.chr_size / 8 - 1;
SetMirrorType(Cart.pad_h, Cart.pad_v);
prg_bank_32k = 0;
return true;
@ -163,6 +163,18 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
}
}
public override void WritePRG(int addr, byte value)
{
if (isMapper79)
{
chr_bank_8k = (value & 7) | ((value >> 3) & 0x8);
}
else
{
base.WritePRG(addr, value);
}
}
public override byte ReadPRG(int addr)
{
addr |= (prg_bank_32k << 15);