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Start Mappers 154, 112

This commit is contained in:
adelikat 2012-07-15 23:12:52 +00:00
parent 3ae3a52f7a
commit c9128cc78e
3 changed files with 237 additions and 3 deletions
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5
BizHawk.Emulation/Consoles/Nintendo/NES/Boards/Namcot1xx/Mapper088.cs
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@ -30,8 +30,8 @@ namespace BizHawk.Emulation.Consoles.Nintendo
switch (Cart.board_type)
{
case "NAMCOT-3443":
case "NAMCOT-3433": //TODO: just a guess, find a ROM with this
case "MAPPER088":
case "NAMCOT-3433":
case "MAPPER088":
break;
default:
return false;
@ -59,7 +59,6 @@ namespace BizHawk.Emulation.Consoles.Nintendo
public override byte ReadPPU(int addr)
{
//if (addr < 0x2000) return VROM[Get_CHRBank_1K(addr)];
if (addr < 0x2000) return VROM[RewireCHR(addr)];
else return base.ReadPPU(addr);
}

154
BizHawk.Emulation/Consoles/Nintendo/NES/Boards/Namcot1xx/Mapper112.cs Normal file
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@ -0,0 +1,154 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace BizHawk.Emulation.Consoles.Nintendo
{
class Mapper112 : NES.NESBoardBase
{
//TODO: this doesn't work
public override bool Configure(NES.EDetectionOrigin origin)
{
//analyze board type
switch (Cart.board_type)
{
case "MAPPER112":
break;
default:
return false;
}
int num_prg_banks = Cart.prg_size / 8;
prg_mask = num_prg_banks - 1;
int num_chr_banks = (Cart.chr_size);
chr_mask = num_chr_banks - 1;
SetMirrorType(EMirrorType.Vertical);
return true;
}
//state
int reg_addr;
int prg_mask, chr_mask;
ByteBuffer regs = new ByteBuffer(8);
//volatile state
ByteBuffer chr_regs_1k = new ByteBuffer(8);
ByteBuffer prg_regs_8k = new ByteBuffer(4);
public void Dispose()
{
regs.Dispose();
chr_regs_1k.Dispose();
prg_regs_8k.Dispose();
}
public override void SyncState(Serializer ser)
{
ser.Sync("reg_addr", ref reg_addr);
ser.Sync("regs", ref regs);
Sync();
}
public override void WritePRG(int addr, byte value)
{
//($8001-$9FFF, odd)
if (addr == 0x6000)
{
if ((value & 1) == 0)
{
SetMirrorType(EMirrorType.Vertical);
}
else
{
SetMirrorType(EMirrorType.Horizontal);
}
}
switch (addr & 0x6001)
{
case 0x0000: //$8000
reg_addr = (value & 7);
break;
case 0x0001: //$8001
regs[reg_addr] = value;
Sync();
break;
}
}
void Sync()
{
prg_regs_8k[0] = regs[0];
prg_regs_8k[1] = regs[1];
prg_regs_8k[2] = 0xFE;
prg_regs_8k[3] = 0xFF;
byte r0_0 = (byte)(regs[2] & ~1);
byte r0_1 = (byte)(regs[2] | 1);
byte r1_0 = (byte)(regs[3] & ~1);
byte r1_1 = (byte)(regs[3] | 1);
chr_regs_1k[0] = r0_0;
chr_regs_1k[1] = r0_1;
chr_regs_1k[2] = r1_0;
chr_regs_1k[3] = r1_1;
chr_regs_1k[4] = regs[4];
chr_regs_1k[5] = regs[5];
chr_regs_1k[6] = regs[6];
chr_regs_1k[7] = regs[7];
}
public int Get_PRGBank_8K(int addr)
{
int bank_8k = addr >> 13;
bank_8k = prg_regs_8k[bank_8k];
return bank_8k;
}
public int Get_CHRBank_1K(int addr)
{
int bank_1k = addr >> 10;
bank_1k = chr_regs_1k[bank_1k];
return bank_1k;
}
int RewireCHR(int addr)
{
if (addr < 0x1000)
{
int mapper_addr = addr >> 1;
int bank_1k = Get_CHRBank_1K(mapper_addr);
int ofs = addr & ((1 << 10) - 1);
return (bank_1k << 11) + ofs;
}
else
{
int bank_1k = Get_CHRBank_1K(addr);
int ofs = addr & ((1 << 10) - 1);
return (bank_1k << 11) + ofs;
}
}
public override byte ReadPPU(int addr)
{
if (addr < 0x2000) return VROM[RewireCHR(addr)];
else return base.ReadPPU(addr);
}
public override void WritePPU(int addr, byte value)
{
if (addr < 0x2000) { }
else base.WritePPU(addr, value);
}
public override byte ReadPRG(int addr)
{
int bank_8k = Get_PRGBank_8K(addr);
bank_8k &= prg_mask;
addr = (bank_8k << 13) | (addr & 0x1FFF);
return ROM[addr];
}
}
}

81
BizHawk.Emulation/Consoles/Nintendo/NES/Boards/Namcot1xx/Mapper154.cs Normal file
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@ -0,0 +1,81 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace BizHawk.Emulation.Consoles.Nintendo
{
/*
Example Games:
--------------------------
Devil Man
Similar to Mapper 88 except for mirroing
*/
class Mapper154 : Namcot108Board_Base
{
//configuration
int chr_bank_mask_1k;
public override bool Configure(NES.EDetectionOrigin origin)
{
//analyze board type
switch (Cart.board_type)
{
case "NAMCOT-3453":
case "MAPPER154":
break;
default:
return false;
}
BaseSetup();
SetMirrorType(EMirrorType.OneScreenA);
chr_bank_mask_1k = Cart.chr_size - 1;
return true;
}
int RewireCHR(int addr)
{
int bank_1k = mapper.Get_CHRBank_1K(addr);
bank_1k &= 0x3F;
if (addr >= 0x1000)
bank_1k |= 0x40;
bank_1k &= chr_bank_mask_1k;
int ofs = addr & ((1 << 10) - 1);
addr = (bank_1k << 10) + ofs;
return addr;
}
public override byte ReadPPU(int addr)
{
if (addr < 0x2000) return VROM[RewireCHR(addr)];
else return base.ReadPPU(addr);
}
public override void WritePPU(int addr, byte value)
{
if (addr < 0x2000) { }
else base.WritePPU(addr, value);
}
public override void WritePRG(int addr, byte value)
{
if ((addr & 0x6001) == 0)
{
if (((value >> 6) & 1) == 0)
{
SetMirrorType(EMirrorType.OneScreenA);
}
else
{
SetMirrorType(EMirrorType.OneScreenB);
}
}
base.WritePRG(addr, value);
}
}
}