c62d2810 |
1 | /* FCE Ultra - NES/Famicom Emulator |
2 | * |
3 | * Copyright notice for this file: |
d97315ac |
4 | * Copyright (C) 2002 Xodnizel |
c62d2810 |
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 calreg mapbyte1[0] |
25 | #define calchr mapbyte1[1] |
26 | |
27 | DECLFW(Mapper41_write) |
28 | { |
29 | if(A<0x8000) |
30 | { |
d97315ac |
31 | ROM_BANK32(A&7); |
32 | MIRROR_SET((A>>5)&1); |
33 | calreg=A; |
34 | calchr&=0x3; |
35 | calchr|=(A>>1)&0xC; |
36 | VROM_BANK8(calchr); |
c62d2810 |
37 | } |
38 | else if(calreg&0x4) |
39 | { |
d97315ac |
40 | calchr&=0xC; |
41 | calchr|=A&3; |
42 | VROM_BANK8(calchr); |
c62d2810 |
43 | } |
44 | } |
45 | |
d97315ac |
46 | static void M41Reset(void) |
47 | { |
48 | calreg=calchr=0; |
49 | } |
50 | |
c62d2810 |
51 | void Mapper41_init(void) |
52 | { |
d97315ac |
53 | MapperReset=M41Reset; |
c62d2810 |
54 | ROM_BANK32(0); |
55 | SetWriteHandler(0x8000,0xffff,Mapper41_write); |
56 | SetWriteHandler(0x6000,0x67ff,Mapper41_write); |
57 | } |