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1 | /* FCE Ultra - NES/Famicom Emulator\r |
2 | *\r |
3 | * Copyright notice for this file:\r |
4 | * Copyright (C) 2009 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 | #include "mapinc.h"\r |
22 | \r |
23 | static uint8 regs[8];\r |
24 | static uint8 *WRAM = NULL;\r |
25 | static uint32 WRAMSIZE;\r |
26 | \r |
27 | static SFORMAT StateRegs[]=\r |
28 | {\r |
29 | {regs, 8, "REGS"},\r |
30 | {0}\r |
31 | };\r |
32 | \r |
33 | static void Sync(void)\r |
34 | {\r |
35 | setprg2r(0x10,0x0800,0);\r |
36 | setprg2r(0x10,0x1000,1);\r |
37 | setprg2r(0x10,0x1800,2);\r |
38 | setprg8r(0x10,0x6000,1);\r |
39 | setprg16(0x8000,0);\r |
40 | setprg16(0xC000,~0);\r |
41 | setchr8(0);\r |
42 | }\r |
43 | \r |
44 | //static DECLFW(SSSNROMWrite)\r |
45 | //{\r |
46 | // CartBW(A,V);\r |
47 | //}\r |
48 | \r |
49 | static DECLFW(SSSNROMWrite)\r |
50 | {\r |
51 | //FCEU_printf("write %04x %02x\n",A,V);\r |
52 | //regs[A&7] = V;\r |
53 | }\r |
54 | \r |
55 | static DECLFR(SSSNROMRead)\r |
56 | {\r |
57 | //FCEU_printf("read %04x\n",A);\r |
58 | switch(A&7) {\r |
59 | case 0: return regs[0]=0xff; // clear all exceptions\r |
60 | case 2: return 0xc0; // DIP selftest + freeplay\r |
61 | case 3: return 0x00; // 0, 1 - attract\r |
62 | // 2\r |
63 | // 4 - menu\r |
64 | // 8 - self check and game casette check\r |
65 | // 10 - lock?\r |
66 | // 20 - game title & count display\r |
67 | case 7: return 0x22; // TV type, key not turned, relay B\r |
68 | default: return 0;\r |
69 | }\r |
70 | }\r |
71 | \r |
72 | static void SSSNROMPower(void)\r |
73 | {\r |
74 | regs[0]=regs[1]=regs[2]=regs[3]=regs[4]=regs[5]=regs[6]=0;\r |
75 | regs[7]=0xff;\r |
76 | Sync();\r |
77 | memset(WRAM,0x00,WRAMSIZE);\r |
78 | // SetWriteHandler(0x0000,0x1FFF,SSSNROMRamWrite);\r |
79 | SetReadHandler(0x0800,0x1FFF,CartBR);\r |
80 | SetWriteHandler(0x0800,0x1FFF,CartBW);\r |
81 | SetReadHandler(0x5000,0x5FFF,SSSNROMRead);\r |
82 | SetWriteHandler(0x5000,0x5FFF,SSSNROMWrite);\r |
83 | SetReadHandler(0x6000,0x7FFF,CartBR);\r |
84 | SetWriteHandler(0x6000,0x7FFF,CartBW);\r |
85 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
86 | }\r |
87 | \r |
88 | static void SSSNROMReset(void)\r |
89 | {\r |
90 | regs[1]=regs[2]=regs[3]=regs[4]=regs[5]=regs[6]=0;\r |
91 | }\r |
92 | \r |
93 | static void SSSNROMClose(void)\r |
94 | {\r |
95 | if(WRAM)\r |
96 | FCEU_gfree(WRAM);\r |
97 | WRAM=NULL;\r |
98 | }\r |
99 | \r |
100 | static void SSSNROMIRQHook(void)\r |
101 | {\r |
102 | // X6502_IRQBegin(FCEU_IQEXT);\r |
103 | }\r |
104 | \r |
105 | static void StateRestore(int version)\r |
106 | {\r |
107 | Sync();\r |
108 | }\r |
109 | \r |
110 | void SSSNROM_Init(CartInfo *info)\r |
111 | {\r |
112 | info->Reset=SSSNROMReset;\r |
113 | info->Power=SSSNROMPower;\r |
114 | info->Close=SSSNROMClose;\r |
115 | GameHBIRQHook=SSSNROMIRQHook;\r |
116 | GameStateRestore=StateRestore;\r |
117 | \r |
118 | WRAMSIZE=16384;\r |
119 | WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);\r |
120 | SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);\r |
121 | \r |
122 | AddExState(WRAM, WRAMSIZE, 0, "WRAM");\r |
123 | AddExState(&StateRegs, ~0, 0, 0);\r |
124 | }\r |