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1 | /* FCE Ultra - NES/Famicom Emulator\r |
2 | *\r |
3 | * Copyright notice for this file:\r |
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4 | * Copyright (C) 2005 CaH4e3\r |
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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 |
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18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r |
19 | *\r |
20 | * VRC-5 (CAI Shogakko no Sansu)\r |
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21 | *\r |
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22 | */\r |
23 | \r |
24 | #include "mapinc.h"\r |
25 | \r |
26 | static uint8 QTAINTRAM[2048];\r |
27 | static writefunc old2007wrap;\r |
28 | \r |
29 | static uint16 CHRSIZE = 8192;\r |
30 | static uint16 WRAMSIZE = 8192 + 4096;\r |
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31 | static uint8 *CHRRAM = NULL;\r |
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32 | static uint8 *WRAM = NULL;\r |
33 | \r |
34 | static uint8 IRQa, K4IRQ;\r |
35 | static uint32 IRQLatch, IRQCount;\r |
36 | \r |
37 | static uint8 regs[16];\r |
38 | //static uint8 test[8];\r |
39 | static SFORMAT StateRegs[]=\r |
40 | {\r |
41 | {&IRQCount, 1, "IRQC"},\r |
42 | {&IRQLatch, 1, "IRQL"},\r |
43 | {&IRQa, 1, "IRQA"},\r |
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44 | {&K4IRQ, 1, "KIRQ"},\r |
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45 | {regs, 16, "REGS"},\r |
46 | {0}\r |
47 | };\r |
48 | \r |
49 | static void chrSync(void)\r |
50 | {\r |
51 | setchr4r(0x10,0x0000,regs[5]&1);\r |
52 | setchr4r(0x10,0x1000,0);\r |
53 | }\r |
54 | \r |
55 | static void Sync(void)\r |
56 | {\r |
57 | chrSync();\r |
58 | // if(regs[0xA]&0x10)\r |
59 | // {\r |
60 | /* setchr1r(0x10,0x0000,(((regs[5]&1))<<2)+0);\r |
61 | setchr1r(0x10,0x0400,(((regs[5]&1))<<2)+1);\r |
62 | setchr1r(0x10,0x0800,(((regs[5]&1))<<2)+2);\r |
63 | setchr1r(0x10,0x0c00,(((regs[5]&1))<<2)+3);\r |
64 | setchr1r(0x10,0x1000,0);\r |
65 | setchr1r(0x10,0x1400,1);\r |
66 | setchr1r(0x10,0x1800,2);\r |
67 | setchr1r(0x10,0x1c00,3);*/\r |
68 | /* setchr1r(0x10,0x0000,(((regs[5]&1))<<2)+0);\r |
69 | setchr1r(0x10,0x0400,(((regs[5]&1))<<2)+1);\r |
70 | setchr1r(0x10,0x0800,(((regs[5]&1))<<2)+2);\r |
71 | setchr1r(0x10,0x0c00,(((regs[5]&1))<<2)+3);\r |
72 | setchr1r(0x10,0x1000,(((regs[5]&1)^1)<<2)+4);\r |
73 | setchr1r(0x10,0x1400,(((regs[5]&1)^1)<<2)+5);\r |
74 | setchr1r(0x10,0x1800,(((regs[5]&1)^1)<<2)+6);\r |
75 | setchr1r(0x10,0x1c00,(((regs[5]&1)^1)<<2)+7);\r |
76 | */\r |
77 | // }\r |
78 | // else\r |
79 | // {\r |
80 | /*\r |
81 | setchr1r(0x10,0x0000,(((regs[5]&1)^1)<<2)+0);\r |
82 | setchr1r(0x10,0x0400,(((regs[5]&1)^1)<<2)+1);\r |
83 | setchr1r(0x10,0x0800,(((regs[5]&1)^1)<<2)+2);\r |
84 | setchr1r(0x10,0x0c00,(((regs[5]&1)^1)<<2)+3);\r |
85 | setchr1r(0x10,0x1000,(((regs[5]&1))<<2)+4);\r |
86 | setchr1r(0x10,0x1400,(((regs[5]&1))<<2)+5);\r |
87 | setchr1r(0x10,0x1800,(((regs[5]&1))<<2)+6);\r |
88 | setchr1r(0x10,0x1c00,(((regs[5]&1))<<2)+7);\r |
89 | // }\r |
90 | //*/\r |
91 | /* setchr1r(1,0x0000,test[0]);\r |
92 | setchr1r(1,0x0400,test[1]);\r |
93 | setchr1r(1,0x0800,test[2]);\r |
94 | setchr1r(1,0x0c00,test[3]);\r |
95 | setchr1r(1,0x1000,test[4]);\r |
96 | setchr1r(1,0x1400,test[5]);\r |
97 | setchr1r(1,0x1800,test[6]);\r |
98 | setchr1r(1,0x1c00,test[7]);\r |
99 | */\r |
100 | setprg4r(0x10,0x6000,regs[0]&1);\r |
101 | if(regs[2]>=0x40)\r |
102 | setprg8r(1,0x8000,(regs[2]-0x40));\r |
103 | else\r |
104 | setprg8r(0,0x8000,(regs[2]&0x3F));\r |
105 | if(regs[3]>=0x40)\r |
106 | setprg8r(1,0xA000,(regs[3]-0x40));\r |
107 | else\r |
108 | setprg8r(0,0xA000,(regs[3]&0x3F));\r |
109 | if(regs[4]>=0x40)\r |
110 | setprg8r(1,0xC000,(regs[4]-0x40));\r |
111 | else\r |
112 | setprg8r(0,0xC000,(regs[4]&0x3F));\r |
113 | \r |
114 | setprg8r(1,0xE000,~0);\r |
115 | setmirror(MI_V);\r |
116 | }\r |
117 | \r |
118 | /*static DECLFW(TestWrite)\r |
119 | {\r |
120 | test[A&7] = V;\r |
121 | Sync();\r |
122 | }*/\r |
123 | \r |
124 | static DECLFW(M190Write)\r |
125 | {\r |
126 | // FCEU_printf("write %04x:%04x %d, %d\n",A,V,scanline,timestamp);\r |
127 | regs[(A&0x0F00)>>8]=V;\r |
128 | switch(A)\r |
129 | { \r |
130 | case 0xd600:IRQLatch&=0xFF00;IRQLatch|=V;break;\r |
131 | case 0xd700:IRQLatch&=0x00FF;IRQLatch|=V<<8;break;\r |
132 | case 0xd900:IRQCount=IRQLatch;IRQa=V&2;K4IRQ=V&1;X6502_IRQEnd(FCEU_IQEXT);break;\r |
133 | case 0xd800:IRQa=K4IRQ;X6502_IRQEnd(FCEU_IQEXT);break;\r |
134 | }\r |
135 | Sync();\r |
136 | }\r |
137 | \r |
138 | static DECLFR(M190Read)\r |
139 | {\r |
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140 | // FCEU_printf("read %04x:%04x %d, %d\n",A,regs[(A&0x0F00)>>8],scanline,timestamp);\r |
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141 | return regs[(A&0x0F00)>>8]+regs[0x0B];\r |
142 | }\r |
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143 | static void FP_FASTAPASS(1) VRC5IRQ(int a)\r |
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144 | {\r |
145 | if(IRQa)\r |
146 | {\r |
147 | IRQCount+=a;\r |
148 | if(IRQCount&0x10000)\r |
149 | {\r |
150 | X6502_IRQBegin(FCEU_IQEXT);\r |
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151 | IRQCount=IRQLatch;\r |
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152 | }\r |
153 | }\r |
154 | }\r |
155 | \r |
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156 | //static void FP_FASTAPASS(1) Mapper190_PPU(uint32 A)\r |
157 | //{\r |
158 | // if(A<0x2000)\r |
159 | // setchr4r(0x10,0x1000,QTAINTRAM[A&0x1FFF]&1);\r |
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160 | // else\r |
161 | // chrSync();\r |
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162 | //}\r |
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163 | \r |
164 | static DECLFW(M1902007Wrap)\r |
165 | {\r |
166 | if(A>=0x2000)\r |
167 | {\r |
168 | if(regs[0xA]&1)\r |
169 | QTAINTRAM[A&0x1FFF]=V;\r |
170 | else\r |
171 | old2007wrap(A,V);\r |
172 | }\r |
173 | }\r |
174 | \r |
175 | \r |
176 | static void M190Power(void)\r |
177 | {\r |
178 | /* test[0]=0;\r |
179 | test[1]=1;\r |
180 | test[2]=2;\r |
181 | test[3]=3;\r |
182 | test[4]=4;\r |
183 | test[5]=5;\r |
184 | test[6]=6;\r |
185 | test[7]=7;\r |
186 | */ \r |
187 | setprg4r(0x10,0x7000,2);\r |
188 | \r |
189 | old2007wrap=GetWriteHandler(0x2007);\r |
190 | SetWriteHandler(0x2007,0x2007,M1902007Wrap);\r |
191 | \r |
192 | SetReadHandler(0x6000,0xFFFF,CartBR);\r |
193 | // SetWriteHandler(0x5000,0x5007,TestWrite);\r |
194 | SetWriteHandler(0x6000,0x7FFF,CartBW);\r |
195 | SetWriteHandler(0x8000,0xFFFF,M190Write);\r |
196 | SetReadHandler(0xDC00,0xDC00,M190Read);\r |
197 | SetReadHandler(0xDD00,0xDD00,M190Read);\r |
198 | Sync();\r |
199 | }\r |
200 | \r |
201 | static void M190Close(void)\r |
202 | {\r |
203 | if(CHRRAM)\r |
204 | FCEU_gfree(CHRRAM);\r |
205 | CHRRAM=NULL;\r |
206 | if(WRAM)\r |
207 | FCEU_gfree(WRAM);\r |
208 | WRAM=NULL;\r |
209 | }\r |
210 | \r |
211 | static void StateRestore(int version)\r |
212 | {\r |
213 | Sync();\r |
214 | }\r |
215 | \r |
216 | void Mapper190_Init(CartInfo *info)\r |
217 | {\r |
218 | info->Power=M190Power;\r |
219 | info->Close=M190Close;\r |
220 | GameStateRestore=StateRestore;\r |
221 | \r |
222 | MapIRQHook=VRC5IRQ;\r |
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223 | // PPU_hook=Mapper190_PPU;\r |
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224 | \r |
225 | CHRRAM=(uint8*)FCEU_gmalloc(CHRSIZE);\r |
226 | SetupCartCHRMapping(0x10,CHRRAM,CHRSIZE,1);\r |
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227 | AddExState(CHRRAM, CHRSIZE, 0, "CRAM");\r |
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228 | \r |
229 | WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);\r |
230 | SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);\r |
231 | AddExState(WRAM, WRAMSIZE, 0, "WRAM");\r |
232 | \r |
233 | if(info->battery)\r |
234 | {\r |
235 | info->SaveGame[0] = WRAM;\r |
236 | info->SaveGameLen[0] = WRAMSIZE - 4096;\r |
237 | }\r |
238 | \r |
239 | AddExState(&StateRegs, ~0, 0, 0);\r |
240 | }\r |