| 1 | /* FCE Ultra - NES/Famicom Emulator\r |
| 2 | *\r |
| 3 | * Copyright notice for this file:\r |
| 4 | * Copyright (C) 1998 BERO\r |
| 5 | * Copyright (C) 2002 Xodnizel\r |
| 6 | * Copyright (C) 2012 CaH4e3\r |
| 7 | *\r |
| 8 | * This program is free software; you can redistribute it and/or modify\r |
| 9 | * it under the terms of the GNU General Public License as published by\r |
| 10 | * the Free Software Foundation; either version 2 of the License, or\r |
| 11 | * (at your option) any later version.\r |
| 12 | *\r |
| 13 | * This program is distributed in the hope that it will be useful,\r |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of\r |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r |
| 16 | * GNU General Public License for more details.\r |
| 17 | *\r |
| 18 | * You should have received a copy of the GNU General Public License\r |
| 19 | * along with this program; if not, write to the Free Software\r |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r |
| 21 | *\r |
| 22 | * Oeka-kids board\r |
| 23 | *\r |
| 24 | * I might want to add some code to the mapper 96 PPU hook function\r |
| 25 | * to not change CHR banks if the attribute table is being accessed,\r |
| 26 | * if I make emulation a little more accurate in the future.\r |
| 27 | *\r |
| 28 | */\r |
| 29 | \r |
| 30 | #include "mapinc.h"\r |
| 31 | \r |
| 32 | static uint8 reg, ppulatch;\r |
| 33 | \r |
| 34 | static SFORMAT StateRegs[]=\r |
| 35 | {\r |
| 36 | {®, 1, "REG"},\r |
| 37 | {&ppulatch, 1, "PPUL"},\r |
| 38 | {0}\r |
| 39 | };\r |
| 40 | \r |
| 41 | static void Sync(void)\r |
| 42 | {\r |
| 43 | setmirror(MI_0);\r |
| 44 | setprg32(0x8000,reg & 3);\r |
| 45 | setchr4(0x0000,(reg & 4) | ppulatch);\r |
| 46 | setchr4(0x1000,(reg & 4) | 3);\r |
| 47 | }\r |
| 48 | \r |
| 49 | static DECLFW(M96Write)\r |
| 50 | {\r |
| 51 | reg = V;\r |
| 52 | Sync();\r |
| 53 | }\r |
| 54 | \r |
| 55 | static void FP_FASTAPASS(1) M96Hook(uint32 A)\r |
| 56 | {\r |
| 57 | if((A & 0x3000) == 0x2000)\r |
| 58 | {\r |
| 59 | ppulatch = (A>>8) & 3;\r |
| 60 | Sync();\r |
| 61 | }\r |
| 62 | }\r |
| 63 | \r |
| 64 | static void M96Power(void)\r |
| 65 | {\r |
| 66 | reg = ppulatch = 0;\r |
| 67 | Sync();\r |
| 68 | SetReadHandler(0x8000,0xffff,CartBR);\r |
| 69 | SetWriteHandler(0x8000,0xffff,M96Write);\r |
| 70 | }\r |
| 71 | \r |
| 72 | static void StateRestore(int version)\r |
| 73 | {\r |
| 74 | Sync();\r |
| 75 | }\r |
| 76 | \r |
| 77 | void Mapper96_Init(CartInfo *info)\r |
| 78 | {\r |
| 79 | info->Power=M96Power;\r |
| 80 | PPU_hook=M96Hook;\r |
| 81 | GameStateRestore=StateRestore;\r |
| 82 | AddExState(&StateRegs, ~0, 0, 0);\r |
| 83 | }\r |
| 84 | \r |