| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 2002 Ben Parnell |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | |
| 21 | #include "mapinc.h" |
| 22 | |
| 23 | |
| 24 | #define IREMCon mapbyte1[0] |
| 25 | |
| 26 | static DECLFW(Mapper32_write) |
| 27 | { |
| 28 | switch(A>>12) |
| 29 | { |
| 30 | case 0x8: |
| 31 | mapbyte1[1]=V; |
| 32 | if(IREMCon) {ROM_BANK8(0xc000,V);ROM_BANK8(0x8000,~1);} |
| 33 | else {ROM_BANK8(0x8000,V);ROM_BANK8(0xc000,~1);} |
| 34 | break; |
| 35 | case 0x9:MIRROR_SET2(V&1); |
| 36 | IREMCon=(V>>1)&1; |
| 37 | if(IREMCon) {ROM_BANK8(0xc000,mapbyte1[1]);ROM_BANK8(0x8000,~1);} |
| 38 | else {ROM_BANK8(0x8000,mapbyte1[1]); ROM_BANK8(0xc000,~1);} |
| 39 | MIRROR_SET(V&1); |
| 40 | break; |
| 41 | case 0xa:ROM_BANK8(0xA000,V); |
| 42 | break; |
| 43 | } |
| 44 | |
| 45 | if((A&0xF000)==0xb000) |
| 46 | VROM_BANK1((A&0x7)<<10,V); |
| 47 | } |
| 48 | |
| 49 | void Mapper32_init(void) |
| 50 | { |
| 51 | ROM_BANK16(0x8000,0); |
| 52 | ROM_BANK16(0xc000,~0); |
| 53 | SetWriteHandler(0x8000,0xffff,Mapper32_write); |
| 54 | } |