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1 | /* FCE Ultra - NES/Famicom Emulator |
2 | * |
3 | * Copyright notice for this file: |
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4 | * Copyright (C) 2002 Xodnizel |
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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 | |
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23 | |
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24 | |
25 | static DECLFW(Mapper57_write) |
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26 | { |
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27 | A&=0x8800; |
28 | if(A==0x8800) |
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29 | { |
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30 | mapbyte1[0]=V; |
31 | if(V&0x80) |
32 | ROM_BANK32(2|(V>>6)); |
33 | else |
34 | { |
35 | ROM_BANK16(0x8000,(V>>5)&3); |
36 | ROM_BANK16(0xc000,(V>>5)&3); |
37 | } |
38 | MIRROR_SET((V&0x8)>>3); |
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39 | } |
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40 | else |
41 | mapbyte1[1]=V; |
42 | VROM_BANK8((mapbyte1[1]&3)|(mapbyte1[0]&7)|((mapbyte1[0]&0x10)>>1)); |
43 | //printf("$%04x:$%02x\n",A,V); |
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44 | } |
45 | |
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46 | void Mapper57_init(void) |
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47 | { |
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48 | SetWriteHandler(0x8000,0xffff,Mapper57_write); |
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49 | } |