mirror of
https://github.com/dborth/fceugx.git
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393 lines
7.8 KiB
C++
393 lines
7.8 KiB
C++
/* FCE Ultra - NES/Famicom Emulator
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*
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* Copyright notice for this file:
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* Copyright (C) 2002 Xodnizel
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "mapinc.h"
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static uint8 latche, latcheinit;
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static uint16 addrreg0, addrreg1;
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static void(*WSync)(void);
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static DECLFW(LatchWrite)
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{
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// FCEU_printf("bs %04x %02x\n",A,V);
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latche=V;
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WSync();
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}
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static void LatchPower(void)
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{
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latche=latcheinit;
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WSync();
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SetReadHandler(0x8000,0xFFFF,CartBR);
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SetWriteHandler(addrreg0,addrreg1,LatchWrite);
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}
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static void StateRestore(int version)
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{
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WSync();
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}
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static void Latch_Init(CartInfo *info, void (*proc)(void), uint8 init, uint16 adr0, uint16 adr1)
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{
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latcheinit=init;
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addrreg0=adr0;
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addrreg1=adr1;
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WSync=proc;
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info->Power=LatchPower;
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GameStateRestore=StateRestore;
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AddExState(&latche, 1, 0, "LATC");
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}
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//------------------ CPROM ---------------------------
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static void CPROMSync(void)
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{
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setchr4(0x0000,0);
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setchr4(0x1000,latche&3);
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setprg16(0x8000,0);
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setprg16(0xC000,1);
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}
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void CPROM_Init(CartInfo *info)
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{
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Latch_Init(info, CPROMSync, 0, 0x8000, 0xFFFF);
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}
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//------------------ Map 184 ---------------------------
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static void M184Sync(void)
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{
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setchr4(0x0000,latche);
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setchr4(0x1000,latche>>4);
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setprg16(0x8000,0);
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setprg16(0xC000,1);
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}
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void Mapper184_Init(CartInfo *info)
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{
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Latch_Init(info, M184Sync, 0, 0x6000, 0x7FFF);
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}
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//------------------ CNROM ---------------------------
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static void CNROMSync(void)
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{
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//mbg 8/10/08 - fixed this so that large homebrew roms would work.
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//setchr8(latche&3);
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setchr8(latche);
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setprg16(0x8000,0);
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setprg16(0xC000,1);
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}
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void CNROM_Init(CartInfo *info)
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{
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Latch_Init(info, CNROMSync, 0, 0x8000, 0xFFFF);
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}
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//------------------ ANROM ---------------------------
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static void ANROMSync()
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{
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setprg32(0x8000,latche&0xf);
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setmirror(MI_0+((latche>>4)&1));
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setchr8(0);
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}
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void ANROM_Init(CartInfo *info)
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{
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Latch_Init(info, ANROMSync, 0, 0x8000, 0xFFFF);
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}
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//------------------ Map 70 ---------------------------
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static void M70Sync()
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{
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setprg16(0x8000,latche>>4);
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setprg16(0xc000,~0);
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setchr8(latche&0xf);
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}
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void Mapper70_Init(CartInfo *info)
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{
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Latch_Init(info, M70Sync, 0, 0x8000, 0xFFFF);
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}
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//------------------ Map 152 ---------------------------
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static void M152Sync()
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{
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setprg16(0x8000,(latche>>4)&7);
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setprg16(0xc000,~0);
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setchr8(latche&0xf);
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setmirror(MI_0+((latche>>7)&1)); /* Saint Seiya...hmm. */
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}
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void Mapper152_Init(CartInfo *info)
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{
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Latch_Init(info, M152Sync, 0, 0x8000, 0xFFFF);
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}
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//------------------ Map 78 ---------------------------
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/* Should be two separate emulation functions for this "mapper". Sigh. URGE TO KILL RISING. */
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static void M78Sync()
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{
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setprg16(0x8000,(latche&7));
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setprg16(0xc000,~0);
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setchr8(latche>>4);
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setmirror(MI_0+((latche>>3)&1));
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}
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void Mapper78_Init(CartInfo *info)
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{
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Latch_Init(info, M78Sync, 0, 0x8000, 0xFFFF);
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}
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//------------------ MHROM ---------------------------
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static void MHROMSync(void)
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{
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setprg32(0x8000,latche>>4);
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setchr8(latche&0xf);
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}
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void MHROM_Init(CartInfo *info)
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{
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Latch_Init(info, MHROMSync, 0, 0x8000, 0xFFFF);
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}
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void Mapper140_Init(CartInfo *info)
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{
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Latch_Init(info, MHROMSync, 0, 0x6000, 0x7FFF);
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}
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void Mapper240_Init(CartInfo *info)
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{
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Latch_Init(info, MHROMSync, 0, 0x4020, 0x5FFF);
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// need SRAM.
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}
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//------------------ Map 87 ---------------------------
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static void M87Sync(void)
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{
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setprg16(0x8000,0);
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setprg16(0xC000,1);
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setchr8(((latche>>1)&1)|((latche<<1)&2));
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// setchr8(latche);
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}
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void Mapper87_Init(CartInfo *info)
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{
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Latch_Init(info, M87Sync, ~0, 0x6000, 0xFFFF);
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}
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//------------------ Map 101 ---------------------------
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static void M101Sync(void)
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{
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setprg16(0x8000,0);
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setprg16(0xC000,1);
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setchr8(latche);
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}
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void Mapper101_Init(CartInfo *info)
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{
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Latch_Init(info, M101Sync, ~0, 0x6000, 0x7FFF);
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}
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//------------------ Map 11 ---------------------------
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static void M11Sync(void)
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{
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setprg32(0x8000,latche&0xf);
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setchr8(latche>>4);
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}
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void Mapper11_Init(CartInfo *info)
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{
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Latch_Init(info, M11Sync, 0, 0x8000, 0xFFFF);
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}
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void Mapper144_Init(CartInfo *info)
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{
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Latch_Init(info, M11Sync, 0, 0x8001, 0xFFFF);
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}
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//------------------ Map 38 ---------------------------
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static void M38Sync(void)
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{
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setprg32(0x8000,latche&3);
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setchr8(latche>>2);
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}
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void Mapper38_Init(CartInfo *info)
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{
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Latch_Init(info, M38Sync, 0, 0x7000, 0x7FFF);
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}
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//------------------ Map 36 ---------------------------
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static void M36Sync(void)
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{
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setprg32(0x8000,latche>>4);
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setchr8((latche)&0xF);
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}
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void Mapper36_Init(CartInfo *info)
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{
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Latch_Init(info, M36Sync, 0, 0x8400, 0xfffe);
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}
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//------------------ UNROM ---------------------------
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static void UNROMSync(void)
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{
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setprg16(0x8000,latche);
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setprg16(0xc000,~0);
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setchr8(0);
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}
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void UNROM_Init(CartInfo *info)
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{
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Latch_Init(info, UNROMSync, 0, 0x8000, 0xFFFF);
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}
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//------------------ Map 93 ---------------------------
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static void SSUNROMSync(void)
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{
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setprg16(0x8000,latche>>4);
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setprg16(0xc000,~0);
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setchr8(0);
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}
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void SUNSOFT_UNROM_Init(CartInfo *info)
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{
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Latch_Init(info, SSUNROMSync, 0, 0x8000, 0xFFFF);
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}
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//------------------ Map 94 ---------------------------
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static void M94Sync(void)
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{
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setprg16(0x8000,latche>>2);
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setprg16(0xc000,~0);
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setchr8(0);
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}
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void Mapper94_Init(CartInfo *info)
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{
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Latch_Init(info, M94Sync, 0, 0x8000, 0xFFFF);
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}
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//------------------ Map 180 ---------------------------
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static void M180Sync(void)
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{
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setprg16(0x8000,0);
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setprg16(0xc000,latche);
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setchr8(0);
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}
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void Mapper180_Init(CartInfo *info)
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{
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Latch_Init(info, M180Sync, 0, 0x8000, 0xFFFF);
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}
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//------------------ Map 107 ---------------------------
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static void M107Sync(void)
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{
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setprg32(0x8000,(latche>>1)&3);
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setchr8(latche&7);
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}
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void Mapper107_Init(CartInfo *info)
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{
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Latch_Init(info, M107Sync, ~0, 0x8000, 0xFFFF);
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}
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//------------------ Map 113 ---------------------------
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static void M113Sync(void)
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{
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setprg32(0x8000,(latche>>3)&7);
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setchr8(((latche>>3)&8)|(latche&7));
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// setmirror(latche>>7); // only for HES 6in1
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}
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void Mapper113_Init(CartInfo *info)
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{
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Latch_Init(info, M113Sync, 0, 0x4100, 0x7FFF);
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}
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//------------------ A65AS ---------------------------
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// actually, there is two cart in one... First have extra mirroring
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// mode (one screen) and 32K bankswitching, second one have only
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// 16 bankswitching mode and normal mirroring... But there is no any
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// correlations between modes and they can be used in one mapper code.
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static void BMCA65ASSync(void)
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{
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if(latche&0x40)
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setprg32(0x8000,(latche>>1)&0x0F);
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else
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{
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setprg16(0x8000,((latche&0x30)>>1)|(latche&7));
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setprg16(0xC000,((latche&0x30)>>1)|7);
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}
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setchr8(0);
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if(latche&0x80)
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setmirror(MI_0+(((latche>>5)&1)));
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else
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setmirror(((latche>>3)&1)^1);
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}
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void BMCA65AS_Init(CartInfo *info)
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{
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Latch_Init(info, BMCA65ASSync, 0, 0x8000, 0xFFFF);
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}
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//------------------ NROM ---------------------------
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#ifdef DEBUG_MAPPER
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static DECLFW(WriteHandler)
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{
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FCEU_printf("bs %04x %02x\n",A,V);
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}
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#endif
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static void NROMPower(void)
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{
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setprg16(0x8000,0);
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setprg16(0xC000,~0);
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setchr8(0);
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SetReadHandler(0x8000,0xFFFF,CartBR);
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#ifdef DEBUG_MAPPER
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SetWriteHandler(0x4020,0xFFFF,WriteHandler);
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#endif
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}
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void NROM_Init(CartInfo *info)
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{
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info->Power=NROMPower;
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}
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