| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 1998 BERO |
| 5 | * Copyright (C) 2002 Xodnizel |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 20 | */ |
| 21 | |
| 22 | #include "mapinc.h" |
| 23 | |
| 24 | static uint8 latche; |
| 25 | |
| 26 | static DECLFW(Mapper34_write) |
| 27 | { |
| 28 | switch(A) |
| 29 | { |
| 30 | case 0x7FFD:ROM_BANK32(V);break; |
| 31 | case 0x7FFE:VROM_BANK4(0x0000,V);break; |
| 32 | case 0x7fff:VROM_BANK4(0x1000,V);break; |
| 33 | } |
| 34 | if(A>=0x8000) |
| 35 | ROM_BANK32(V); |
| 36 | } |
| 37 | |
| 38 | void Mapper34_init(void) |
| 39 | { |
| 40 | ROM_BANK32(0); |
| 41 | SetWriteHandler(0x7ffd,0xffff,Mapper34_write); |
| 42 | } |
| 43 | |
| 44 | /* I might want to add some code to the mapper 96 PPU hook function |
| 45 | to not change CHR banks if the attribute table is being accessed, |
| 46 | if I make emulation a little more accurate in the future. |
| 47 | */ |
| 48 | |
| 49 | static uint8 M96LA; |
| 50 | static DECLFW(Mapper96_write) |
| 51 | { |
| 52 | latche=V; |
| 53 | setprg32(0x8000,V&3); |
| 54 | setchr4r(0x10,0x0000,(latche&4)|M96LA); |
| 55 | setchr4r(0x10,0x1000,(latche&4)|3); |
| 56 | } |
| 57 | |
| 58 | static void M96Hook(uint32 A) |
| 59 | { |
| 60 | if((A&0x3000)!=0x2000) return; |
| 61 | //if((A&0x3ff)>=0x3c0) return; |
| 62 | M96LA=(A>>8)&3; |
| 63 | setchr4r(0x10,0x0000,(latche&4)|M96LA); |
| 64 | } |
| 65 | |
| 66 | static void M96Sync(int v) |
| 67 | { |
| 68 | setprg32(0x8000,latche&3); |
| 69 | setchr4r(0x10,0x0000,(latche&4)|M96LA); |
| 70 | setchr4r(0x10,0x1000,(latche&4)|3); |
| 71 | } |
| 72 | |
| 73 | void Mapper96_init(void) |
| 74 | { |
| 75 | SetWriteHandler(0x8000,0xffff,Mapper96_write); |
| 76 | PPU_hook=M96Hook; |
| 77 | AddExState(&latche, 1, 0, "LATC"); |
| 78 | AddExState(&M96LA, 1, 0, "LAVA"); |
| 79 | SetupCartCHRMapping(0x10, MapperExRAM, 32768, 1); |
| 80 | latche=M96LA=0; |
| 81 | M96Sync(0); |
| 82 | setmirror(MI_0); |
| 83 | GameStateRestore=M96Sync; |
| 84 | } |
| 85 | |
| 86 | // DIS23C01 Open Soft, Korea |
| 87 | // Metal Force (K) |
| 88 | // Buzz and Waldog (K) |