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update for VS super xevious

This commit is contained in:
alyosha-tas 2016-11-06 21:12:30 -05:00 committed by GitHub
parent 313ef425c6
commit 00f790cd2c
2 changed files with 97 additions and 4 deletions
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12
BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Namcot1xx/Mapper206.cs
View File

@ -11,6 +11,18 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
//analyze board type
switch (Cart.board_type)
{
case "MAPPER206VS":
NES.VS_dips[0] = (byte)(NES.SyncSettings.VSDipswitches.Dip_Switch_1 ? 1 : 0);
NES.VS_dips[1] = (byte)(NES.SyncSettings.VSDipswitches.Dip_Switch_1 ? 1 : 0);
NES.VS_dips[2] = (byte)(NES.SyncSettings.VSDipswitches.Dip_Switch_1 ? 1 : 0);
NES.VS_dips[3] = (byte)(NES.SyncSettings.VSDipswitches.Dip_Switch_1 ? 1 : 0);
NES.VS_dips[4] = (byte)(NES.SyncSettings.VSDipswitches.Dip_Switch_1 ? 1 : 0);
NES.VS_dips[5] = (byte)(NES.SyncSettings.VSDipswitches.Dip_Switch_1 ? 1 : 0);
NES.VS_dips[6] = (byte)(NES.SyncSettings.VSDipswitches.Dip_Switch_1 ? 1 : 0);
NES.VS_dips[7] = (byte)(NES.SyncSettings.VSDipswitches.Dip_Switch_1 ? 1 : 0);
NES._isVS = true;
break;
case "NES-DEROM": //R.B.I. baseball (U)
AssertPrg(64); AssertChr(32,64); AssertVram(0); AssertWram(0);
break;

89
BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Namcot1xx/Namcot1xx.cs
View File

@ -104,6 +104,11 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
//configuration
protected int prg_mask, chr_byte_mask;
//the VS actually does have 2 KB of nametable address space
//let's make the extra space here, instead of in the main NES to avoid confusion
byte[] CIRAM_VS = new byte[0x800];
public override void Dispose()
{
if(mapper != null)
@ -113,6 +118,9 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
public override void SyncState(Serializer ser)
{
base.SyncState(ser);
if (NES._isVS)
ser.Sync("CIRAM_VS", ref CIRAM_VS, false);
mapper.SyncState(ser);
}
@ -145,8 +153,24 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
}
else return VRAM[addr];
}
else return base.ReadPPU(addr);
}
else
{
if (NES._isVS)
{
addr = addr - 0x2000;
if (addr < 0x800)
{
return NES.CIRAM[addr];
}
else
{
return CIRAM_VS[addr - 0x800];
}
}
else
return base.ReadPPU(addr);
}
}
public override void WritePPU(int addr, byte value)
{
@ -156,7 +180,24 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
addr = MapCHR(addr);
VRAM[addr] = value;
}
base.WritePPU(addr, value);
else if (NES._isVS)
{
// The game VS Castlevania apparently scans for more CIRAM then actually exists, so we have to mask out nonsensical values
addr &= 0x2FFF;
addr = addr - 0x2000;
if (addr < 0x800)
{
NES.CIRAM[addr] = value;
}
else
{
CIRAM_VS[addr - 0x800] = value;
}
}
else
base.WritePPU(addr, value);
}
@ -173,6 +214,45 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
return ROM[addr];
}
// the one VS system game that uses mapper 206 (Super Xevious) has security hardware in the EXP memory region
// I don't know the details, but it's obvious at least what values it expects to read from where
public override byte ReadEXP(int addr)
{
if (!NES._isVS)
return base.ReadEXP(addr);
else
{
addr += 0x4000;
if (addr == 0x54FF)
return 0x05;
else if (addr == 0x5678)
{
if (NES.cpu.X == 0x0C)
return 0;
else
return 1;
}
else if (addr == 0x578F)
{
if (NES.cpu.X == 0x0C)
return 0xD1;
else
return 0x89;
}
else if (addr == 0x5567)
{
if (NES.cpu.X == 0x0C)
return 0x3E;
else
return 0x37;
}
else
return base.ReadEXP(addr - 0x4000);
}
}
protected virtual void BaseSetup()
{
int num_prg_banks = Cart.prg_size / 8;
@ -182,7 +262,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
chr_byte_mask = (num_chr_banks*1024) - 1;
mapper = new Namcot108Chip(this);
SetMirrorType(EMirrorType.Vertical);
if (!NES._isVS)
SetMirrorType(EMirrorType.Vertical);
}
}