c62d2810 |
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 | } |