| 1 | /* FCE Ultra - NES/Famicom Emulator\r |
| 2 | *\r |
| 3 | * Copyright notice for this file:\r |
| 4 | * Copyright (C) 2008 CaH4e3\r |
| 5 | *\r |
| 6 | * This program is free software; you can redistribute it and/or modify\r |
| 7 | * it under the terms of the GNU General Public License as published by\r |
| 8 | * the Free Software Foundation; either version 2 of the License, or\r |
| 9 | * (at your option) any later version.\r |
| 10 | *\r |
| 11 | * This program is distributed in the hope that it will be useful,\r |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of\r |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r |
| 14 | * GNU General Public License for more details.\r |
| 15 | *\r |
| 16 | * You should have received a copy of the GNU General Public License\r |
| 17 | * along with this program; if not, write to the Free Software\r |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r |
| 19 | */\r |
| 20 | \r |
| 21 | // T-227-1, 820632, MMC3 based, multimenu, 60000in1 (0010) dip switches\r |
| 22 | \r |
| 23 | #include "mapinc.h"\r |
| 24 | #include "mmc3.h"\r |
| 25 | \r |
| 26 | static uint8 reset_flag = 0x07;\r |
| 27 | \r |
| 28 | static void BMCT2271CW(uint32 A, uint8 V)\r |
| 29 | {\r |
| 30 | uint32 va = V; \r |
| 31 | if(EXPREGS[0]&0x20)\r |
| 32 | {\r |
| 33 | va|=0x200;\r |
| 34 | va|=(EXPREGS[0]&0x10)<<4;\r |
| 35 | }\r |
| 36 | else\r |
| 37 | {\r |
| 38 | va&=0x7F;\r |
| 39 | va|=(EXPREGS[0]&0x18)<<4;\r |
| 40 | }\r |
| 41 | setchr1(A,va);\r |
| 42 | }\r |
| 43 | \r |
| 44 | static void BMCT2271PW(uint32 A, uint8 V)\r |
| 45 | {\r |
| 46 | uint32 va = V & 0x3F; \r |
| 47 | if(EXPREGS[0]&0x20)\r |
| 48 | {\r |
| 49 | va&=0x1F;\r |
| 50 | va|=0x40;\r |
| 51 | va|=(EXPREGS[0]&0x10)<<1;\r |
| 52 | }\r |
| 53 | else\r |
| 54 | {\r |
| 55 | va&=0x0F;\r |
| 56 | va|=(EXPREGS[0]&0x18)<<1;\r |
| 57 | }\r |
| 58 | switch(EXPREGS[0]&3)\r |
| 59 | {\r |
| 60 | case 0x00: setprg8(A,va); break;\r |
| 61 | case 0x02: \r |
| 62 | {\r |
| 63 | va=(va&0xFD)|((EXPREGS[0]&4)>>1);\r |
| 64 | if(A<0xC000)\r |
| 65 | {\r |
| 66 | setprg16(0x8000,va >> 1); \r |
| 67 | setprg16(0xC000,va >> 1); \r |
| 68 | }\r |
| 69 | break;\r |
| 70 | }\r |
| 71 | case 0x01: \r |
| 72 | case 0x03: if(A<0xC000) setprg32(0x8000,va >> 2); break;\r |
| 73 | }\r |
| 74 | \r |
| 75 | }\r |
| 76 | \r |
| 77 | static DECLFW(BMCT2271LoWrite)\r |
| 78 | {\r |
| 79 | if(!(EXPREGS[0]&0x80))\r |
| 80 | EXPREGS[0] = A & 0xFF;\r |
| 81 | FixMMC3PRG(MMC3_cmd);\r |
| 82 | FixMMC3CHR(MMC3_cmd);\r |
| 83 | }\r |
| 84 | \r |
| 85 | static DECLFR(BMCT2271HiRead)\r |
| 86 | {\r |
| 87 | uint32 av = A;\r |
| 88 | if(EXPREGS[0]&0x40) av = (av & 0xFFF0)|reset_flag;\r |
| 89 | return CartBR(av);\r |
| 90 | }\r |
| 91 | \r |
| 92 | static void BMCT2271Reset(void)\r |
| 93 | {\r |
| 94 | EXPREGS[0] = 0x00;\r |
| 95 | reset_flag++;\r |
| 96 | reset_flag&=0x0F;\r |
| 97 | MMC3RegReset();\r |
| 98 | }\r |
| 99 | \r |
| 100 | static void BMCT2271Power(void)\r |
| 101 | {\r |
| 102 | EXPREGS[0] = 0x00;\r |
| 103 | GenMMC3Power();\r |
| 104 | SetWriteHandler(0x6000,0x7FFF,BMCT2271LoWrite);\r |
| 105 | SetReadHandler(0x8000,0xFFFF,BMCT2271HiRead);\r |
| 106 | }\r |
| 107 | \r |
| 108 | void BMCT2271_Init(CartInfo *info)\r |
| 109 | {\r |
| 110 | GenMMC3_Init(info, 128, 128, 8, 0);\r |
| 111 | pwrap=BMCT2271PW;\r |
| 112 | cwrap=BMCT2271CW;\r |
| 113 | info->Power=BMCT2271Power;\r |
| 114 | info->Reset=BMCT2271Reset;\r |
| 115 | AddExState(EXPREGS, 1, 0, "EXPR");\r |
| 116 | }\r |