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/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
* Copyright (C) 2006 CaH4e3
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* TXC mappers, originally much complex banksitching
*
* 01-22111-000 (05-00002-010) (132, 22211) - MGC-001 Qi Wang
* 01-22110-000 (52S ) - MGC-002 2-in-1 Gun
* 01-22111-100 (02-00002-010) (173 ) - MGC-008 Mahjong Block
* (079 ) - MGC-012 Poke Block
* 01-22110-200 (05-00002-010) (036 ) - MGC-014 Strike Wolf
* 01-22000-400 (05-00002-010) (036 ) - MGC-015 Policeman
* 01-22017-000 (05-PT017-080) (189 ) - MGC-017 Thunder Warrior
* 01-11160-000 (04-02310-000) ( , 11160) - MGC-023 6-in-1
* 01-22270-000 (05-00002-010) (132, 22211) - MGC-xxx Creatom
* 01-22200-400 (------------) (079 ) - ET.03 F-15 City War
* (172 ) - 1991 Du Ma Racing
*
*/
#include "mapinc.h"
static uint8 reg[4], cmd, is172, is173;
static SFORMAT StateRegs[] =
{
{ reg, 4, "REGS" },
{ &cmd, 1, "CMD" },
{ 0 }
};
static void Sync(void) {
setprg32(0x8000, (reg[2] >> 2) & 1);
if (is172)
setchr8((((cmd ^ reg[2]) >> 3) & 2) | (((cmd ^ reg[2]) >> 5) & 1)); /* 1991 DU MA Racing probably CHR bank sequence is WRONG, so it is possible to
* rearrange CHR banks for normal UNIF board and mapper 172 is unneccessary */
else
setchr8(reg[2] & 3);
}
static DECLFW(UNL22211WriteLo) {
/* FCEU_printf("bs %04x %02x\n",A,V); */
reg[A & 3] = V;
}
static DECLFW(UNL22211WriteHi) {
/* FCEU_printf("bs %04x %02x\n",A,V); */
cmd = V;
Sync();
}
static DECLFR(UNL22211ReadLo) {
return (reg[1] ^ reg[2]) | (is173 ? 0x01 : 0x40);
#if 0
if(reg[3])
return reg[2];
else
return X.DB;
#endif
}
static void UNL22211Power(void) {
Sync();
SetReadHandler(0x8000, 0xFFFF, CartBR);
SetReadHandler(0x4100, 0x4100, UNL22211ReadLo);
SetWriteHandler(0x4100, 0x4103, UNL22211WriteLo);
SetWriteHandler(0x8000, 0xFFFF, UNL22211WriteHi);
}
static void StateRestore(int version) {
Sync();
}
void UNL22211_Init(CartInfo *info) {
is172 = 0;
is173 = 0;
info->Power = UNL22211Power;
GameStateRestore = StateRestore;
AddExState(&StateRegs, ~0, 0, 0);
}
void Mapper172_Init(CartInfo *info) {
is172 = 1;
is173 = 0;
info->Power = UNL22211Power;
GameStateRestore = StateRestore;
AddExState(&StateRegs, ~0, 0, 0);
}
void Mapper173_Init(CartInfo *info) {
is172 = 0;
is173 = 1;
info->Power = UNL22211Power;
GameStateRestore = StateRestore;
AddExState(&StateRegs, ~0, 0, 0);
}