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1 | /* FCE Ultra - NES/Famicom Emulator\r |
2 | *\r |
3 | * Copyright notice for this file:\r |
4 | * Copyright (C) 2007 CaH4e3\r |
5 | * Copyright (C) 2011 FCEUX team\r |
6 | *\r |
7 | * This program is free software; you can redistribute it and/or modify\r |
8 | * it under the terms of the GNU General Public License as published by\r |
9 | * the Free Software Foundation; either version 2 of the License, or\r |
10 | * (at your option) any later version.\r |
11 | *\r |
12 | * This program is distributed in the hope that it will be useful,\r |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of\r |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r |
15 | * GNU General Public License for more details.\r |
16 | *\r |
17 | * You should have received a copy of the GNU General Public License\r |
18 | * along with this program; if not, write to the Free Software\r |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\r |
20 | *\r |
21 | * Bandai mappers\r |
22 | *\r |
23 | */\r |
24 | \r |
25 | //Famicom Jump 2 should get transformed to m153\r |
26 | //All other games are not supporting EEPROM saving right now. \r |
27 | //We may need to distinguish between 16 and 159 in order to know the EEPROM configuration.\r |
28 | //Until then, we just return 0x00 from the EEPROM read\r |
29 | \r |
30 | #include "mapinc.h"\r |
31 | \r |
32 | static uint8 reg[16], is153;\r |
33 | static uint8 IRQa;\r |
34 | static int16 IRQCount, IRQLatch;\r |
35 | \r |
36 | static uint8 *WRAM=NULL;\r |
37 | static uint32 WRAMSIZE;\r |
38 | \r |
39 | static SFORMAT StateRegs[]=\r |
40 | {\r |
41 | {reg, 16, "REGS"},\r |
42 | {&IRQa, 1, "IRQA"},\r |
43 | {&IRQCount, 2, "IRQC"},\r |
44 | {&IRQLatch, 2, "IRQL"}, // need for Famicom Jump II - Saikyou no 7 Nin (J) [!]\r |
45 | {0}\r |
46 | };\r |
47 | \r |
48 | static void BandaiIRQHook(int a)\r |
49 | {\r |
50 | if(IRQa)\r |
51 | {\r |
52 | IRQCount -= a;\r |
53 | if(IRQCount<0)\r |
54 | {\r |
55 | X6502_IRQBegin(FCEU_IQEXT);\r |
56 | IRQa = 0;\r |
57 | IRQCount = -1;\r |
58 | }\r |
59 | }\r |
60 | }\r |
61 | \r |
62 | static void BandaiSync(void)\r |
63 | {\r |
64 | if(is153)\r |
65 | {\r |
66 | int base=(reg[0]&1)<<4;\r |
67 | setchr8(0);\r |
68 | setprg16(0x8000,(reg[8]&0x0F)|base);\r |
69 | setprg16(0xC000,0x0F|base);\r |
70 | }\r |
71 | else\r |
72 | {\r |
73 | int i;\r |
74 | for(i=0; i<8; i++) setchr1(i<<10,reg[i]);\r |
75 | setprg16(0x8000,reg[8]);\r |
76 | setprg16(0xC000,~0);\r |
77 | }\r |
78 | switch(reg[9]&3)\r |
79 | {\r |
80 | case 0: setmirror(MI_V); break;\r |
81 | case 1: setmirror(MI_H); break;\r |
82 | case 2: setmirror(MI_0); break;\r |
83 | case 3: setmirror(MI_1); break;\r |
84 | }\r |
85 | }\r |
86 | \r |
87 | static DECLFW(BandaiWrite)\r |
88 | {\r |
89 | A&=0x0F;\r |
90 | if(A<0x0A)\r |
91 | {\r |
92 | reg[A&0x0F]=V;\r |
93 | BandaiSync();\r |
94 | }\r |
95 | else\r |
96 | switch(A)\r |
97 | {\r |
98 | case 0x0A: X6502_IRQEnd(FCEU_IQEXT); IRQa=V&1; IRQCount=IRQLatch; break;\r |
99 | case 0x0B: IRQLatch&=0xFF00; IRQLatch|=V; break;\r |
100 | case 0x0C: IRQLatch&=0xFF; IRQLatch|=V<<8; break;\r |
101 | case 0x0D: break;// Serial EEPROM control port\r |
102 | }\r |
103 | }\r |
104 | \r |
105 | DECLFR(BandaiRead) |
106 | { |
107 | return 0; |
108 | }\r |
109 | \r |
110 | static void BandaiPower(void)\r |
111 | {\r |
112 | BandaiSync();\r |
113 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
114 | SetWriteHandler(0x6000,0xFFFF,BandaiWrite);\r |
115 | SetReadHandler(0x6000,0x7FFF,BandaiRead);\r |
116 | }\r |
117 | \r |
118 | static void M153Power(void)\r |
119 | {\r |
120 | BandaiSync();\r |
121 | setprg8r(0x10,0x6000,0);\r |
122 | SetReadHandler(0x6000,0x7FFF,CartBR);\r |
123 | SetWriteHandler(0x6000,0x7FFF,CartBW);\r |
124 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
125 | SetWriteHandler(0x8000,0xFFFF,BandaiWrite);\r |
126 | }\r |
127 | \r |
128 | \r |
129 | static void M153Close(void)\r |
130 | {\r |
131 | if(WRAM)\r |
132 | FCEU_gfree(WRAM);\r |
133 | WRAM=NULL;\r |
134 | }\r |
135 | \r |
136 | static void StateRestore(int version)\r |
137 | {\r |
138 | BandaiSync();\r |
139 | }\r |
140 | \r |
141 | void Mapper16_Init(CartInfo *info)\r |
142 | {\r |
143 | is153=0;\r |
144 | info->Power=BandaiPower;\r |
145 | MapIRQHook=BandaiIRQHook;\r |
146 | GameStateRestore=StateRestore;\r |
147 | AddExState(&StateRegs, ~0, 0, 0);\r |
148 | }\r |
149 | \r |
150 | void Mapper159_Init(CartInfo *info)\r |
151 | {\r |
152 | Mapper16_Init(info);\r |
153 | }\r |
154 | \r |
155 | \r |
156 | void Mapper153_Init(CartInfo *info)\r |
157 | {\r |
158 | is153=1;\r |
159 | info->Power=M153Power;\r |
160 | info->Close=M153Close;\r |
161 | MapIRQHook=BandaiIRQHook;\r |
162 | \r |
163 | WRAMSIZE=8192;\r |
164 | WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);\r |
165 | SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);\r |
166 | AddExState(WRAM, WRAMSIZE, 0, "WRAM");\r |
167 | \r |
168 | if(info->battery)\r |
169 | {\r |
170 | info->SaveGame[0]=WRAM;\r |
171 | info->SaveGameLen[0]=WRAMSIZE;\r |
172 | }\r |
173 | \r |
174 | GameStateRestore=StateRestore;\r |
175 | AddExState(&StateRegs, ~0, 0, 0);\r |
176 | }\r |