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1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 2005 CaH4e3 |
| 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 |
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18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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19 | */ |
| 20 | |
| 21 | #include "mapinc.h" |
| 22 | #include "mmc3.h" |
| 23 | |
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24 | static uint8 *CHRRAM = NULL; |
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25 | static int masko8[8]={63,31,15,1,3,0,0,0}; |
| 26 | |
| 27 | static void Super24PW(uint32 A, uint8 V) |
| 28 | { |
| 29 | uint32 NV=V&masko8[EXPREGS[0]&7]; |
| 30 | NV|=(EXPREGS[1]<<1); |
| 31 | setprg8r((NV>>6)&0xF,A,NV); |
| 32 | } |
| 33 | |
| 34 | static void Super24CW(uint32 A, uint8 V) |
| 35 | { |
| 36 | if(EXPREGS[0]&0x20) |
| 37 | setchr1r(0x10,A,V); |
| 38 | else |
| 39 | { |
| 40 | uint32 NV=V|(EXPREGS[2]<<3); |
| 41 | setchr1r((NV>>9)&0xF,A,NV); |
| 42 | } |
| 43 | } |
| 44 | |
| 45 | static DECLFW(Super24Write) |
| 46 | { |
| 47 | switch(A) |
| 48 | { |
| 49 | case 0x5FF0: EXPREGS[0]=V; |
| 50 | FixMMC3PRG(MMC3_cmd); |
| 51 | FixMMC3CHR(MMC3_cmd); |
| 52 | break; |
| 53 | case 0x5FF1: EXPREGS[1]=V; |
| 54 | FixMMC3PRG(MMC3_cmd); |
| 55 | break; |
| 56 | case 0x5FF2: EXPREGS[2]=V; |
| 57 | FixMMC3CHR(MMC3_cmd); |
| 58 | break; |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | static void Super24Power(void) |
| 63 | { |
| 64 | EXPREGS[0]=0x24; |
| 65 | EXPREGS[1]=159; |
| 66 | EXPREGS[2]=0; |
| 67 | GenMMC3Power(); |
| 68 | SetWriteHandler(0x5000,0x7FFF,Super24Write); |
| 69 | SetReadHandler(0x8000,0xFFFF,CartBR); |
| 70 | } |
| 71 | |
| 72 | static void Super24Reset(void) |
| 73 | { |
| 74 | EXPREGS[0]=0x24; |
| 75 | EXPREGS[1]=159; |
| 76 | EXPREGS[2]=0; |
| 77 | MMC3RegReset(); |
| 78 | } |
| 79 | |
| 80 | static void Super24Close(void) |
| 81 | { |
| 82 | if(CHRRAM) |
| 83 | FCEU_gfree(CHRRAM); |
| 84 | CHRRAM = NULL; |
| 85 | } |
| 86 | |
| 87 | void Super24_Init(CartInfo *info) |
| 88 | { |
| 89 | GenMMC3_Init(info, 128, 256, 0, 0); |
| 90 | info->Power=Super24Power; |
| 91 | info->Reset=Super24Reset; |
| 92 | info->Close=Super24Close; |
| 93 | cwrap=Super24CW; |
| 94 | pwrap=Super24PW; |
| 95 | CHRRAM=(uint8*)FCEU_gmalloc(8192); |
| 96 | SetupCartCHRMapping(0x10, CHRRAM, 8192, 1); |
| 97 | AddExState(CHRRAM, 8192, 0, "CHRR"); |
| 98 | AddExState(EXPREGS, 3, 0, "BIG2"); |
| 99 | } |
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