| 1 | /* FCE Ultra - NES/Famicom Emulator\r |
| 2 | *\r |
| 3 | * Copyright notice for this file:\r |
| 4 | * Copyright (C) 2007 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 | * 63in1 ghostbusters\r |
| 20 | */\r |
| 21 | \r |
| 22 | #include "mapinc.h"\r |
| 23 | \r |
| 24 | static uint8 reg[2], bank;\r |
| 25 | static uint8 banks[4] = {0, 0, 1, 2};\r |
| 26 | static uint8 *CHRROM=NULL;\r |
| 27 | static uint32 CHRROMSIZE;\r |
| 28 | \r |
| 29 | static SFORMAT StateRegs[]=\r |
| 30 | {\r |
| 31 | {reg, 2, "REGS"},\r |
| 32 | {&bank, 1, "BANK"},\r |
| 33 | {0}\r |
| 34 | };\r |
| 35 | \r |
| 36 | static void Sync(void)\r |
| 37 | {\r |
| 38 | if(reg[0]&0x20)\r |
| 39 | {\r |
| 40 | setprg16r(banks[bank],0x8000,reg[0]&0x1F);\r |
| 41 | setprg16r(banks[bank],0xC000,reg[0]&0x1F);\r |
| 42 | }\r |
| 43 | else\r |
| 44 | setprg32r(banks[bank],0x8000,(reg[0]>>1)&0x0F);\r |
| 45 | if(reg[1]&2)\r |
| 46 | setchr8r(0x10,0);\r |
| 47 | else\r |
| 48 | setchr8(0);\r |
| 49 | setmirror((reg[0]&0x40)>>6);\r |
| 50 | }\r |
| 51 | \r |
| 52 | static DECLFW(BMCGhostbusters63in1Write)\r |
| 53 | {\r |
| 54 | reg[A&1]=V;\r |
| 55 | bank=((reg[0]&0x80)>>7)|((reg[1]&1)<<1);\r |
| 56 | // FCEU_printf("reg[0]=%02x, reg[1]=%02x, bank=%02x\n",reg[0],reg[1],bank);\r |
| 57 | Sync();\r |
| 58 | }\r |
| 59 | \r |
| 60 | static DECLFR(BMCGhostbusters63in1Read)\r |
| 61 | {\r |
| 62 | if(bank==1)\r |
| 63 | return X.DB;\r |
| 64 | else\r |
| 65 | return CartBR(A);\r |
| 66 | }\r |
| 67 | \r |
| 68 | static void BMCGhostbusters63in1Power(void)\r |
| 69 | {\r |
| 70 | reg[0]=reg[1]=0;\r |
| 71 | Sync();\r |
| 72 | SetReadHandler(0x8000,0xFFFF,BMCGhostbusters63in1Read);\r |
| 73 | SetWriteHandler(0x8000,0xFFFF,BMCGhostbusters63in1Write);\r |
| 74 | }\r |
| 75 | \r |
| 76 | static void BMCGhostbusters63in1Reset(void)\r |
| 77 | {\r |
| 78 | reg[0]=reg[1]=0;\r |
| 79 | }\r |
| 80 | \r |
| 81 | static void StateRestore(int version)\r |
| 82 | {\r |
| 83 | Sync();\r |
| 84 | }\r |
| 85 | \r |
| 86 | static void BMCGhostbusters63in1Close(void)\r |
| 87 | {\r |
| 88 | if(CHRROM)\r |
| 89 | FCEU_gfree(CHRROM);\r |
| 90 | CHRROM=NULL;\r |
| 91 | }\r |
| 92 | \r |
| 93 | void BMCGhostbusters63in1_Init(CartInfo *info)\r |
| 94 | {\r |
| 95 | info->Reset=BMCGhostbusters63in1Reset;\r |
| 96 | info->Power=BMCGhostbusters63in1Power;\r |
| 97 | info->Close=BMCGhostbusters63in1Close;\r |
| 98 | \r |
| 99 | CHRROMSIZE=8192; // dummy CHRROM, VRAM disable\r |
| 100 | CHRROM=(uint8*)FCEU_gmalloc(CHRROMSIZE);\r |
| 101 | SetupCartPRGMapping(0x10,CHRROM,CHRROMSIZE,0);\r |
| 102 | AddExState(CHRROM, CHRROMSIZE, 0, "CROM");\r |
| 103 | \r |
| 104 | GameStateRestore=StateRestore;\r |
| 105 | AddExState(&StateRegs, ~0, 0, 0);\r |
| 106 | }\r |