| | 1 | /* FCE Ultra - NES/Famicom Emulator |
| | 2 | * |
| | 3 | * Copyright notice for this file: |
| | 4 | * Copyright (C) 1998 BERO |
| | 5 | * Copyright (C) 2002 Ben Parnell |
| | 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| | 20 | */ |
| | 21 | |
| | 22 | #include "mapinc.h" |
| | 23 | |
| | 24 | |
| | 25 | |
| | 26 | |
| | 27 | DECLFW(Mapper15_write) |
| | 28 | { |
| | 29 | switch(A) |
| | 30 | { |
| | 31 | case 0x8000: |
| | 32 | if(V&0x80) |
| | 33 | { |
| | 34 | ROM_BANK8(0x8000,(V<<1)+1); |
| | 35 | ROM_BANK8(0xA000,(V<<1)); |
| | 36 | ROM_BANK8(0xC000,(V<<1)+2); |
| | 37 | ROM_BANK8(0xE000,(V<<1)+1); |
| | 38 | } |
| | 39 | else |
| | 40 | { |
| | 41 | ROM_BANK16(0x8000,V); |
| | 42 | ROM_BANK16(0xC000,V+1); |
| | 43 | } |
| | 44 | MIRROR_SET((V>>6)&1); |
| | 45 | break; |
| | 46 | case 0x8001: |
| | 47 | MIRROR_SET(0); |
| | 48 | ROM_BANK16(0x8000,V); |
| | 49 | ROM_BANK16(0xc000,~0); |
| | 50 | break; |
| | 51 | case 0x8002: |
| | 52 | if(V&0x80) |
| | 53 | { |
| | 54 | ROM_BANK8(0x8000,((V<<1)+1)); |
| | 55 | ROM_BANK8(0xA000,((V<<1)+1)); |
| | 56 | ROM_BANK8(0xC000,((V<<1)+1)); |
| | 57 | ROM_BANK8(0xE000,((V<<1)+1)); |
| | 58 | } |
| | 59 | else |
| | 60 | { |
| | 61 | ROM_BANK8(0x8000,(V<<1)); |
| | 62 | ROM_BANK8(0xA000,(V<<1)); |
| | 63 | ROM_BANK8(0xC000,(V<<1)); |
| | 64 | ROM_BANK8(0xE000,(V<<1)); |
| | 65 | } |
| | 66 | break; |
| | 67 | case 0x8003: |
| | 68 | MIRROR_SET((V>>6)&1); |
| | 69 | if(V&0x80) |
| | 70 | { |
| | 71 | ROM_BANK8(0xC000,(V<<1)+1); |
| | 72 | ROM_BANK8(0xE000,(V<<1)); |
| | 73 | } |
| | 74 | else |
| | 75 | { |
| | 76 | ROM_BANK16(0xC000,V); |
| | 77 | } |
| | 78 | break; |
| | 79 | } |
| | 80 | } |
| | 81 | |
| | 82 | void Mapper15_init(void) |
| | 83 | { |
| | 84 | ROM_BANK32(0); |
| | 85 | SetWriteHandler(0x8000,0xFFFF,Mapper15_write); |
| | 86 | } |
| | 87 | |
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