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1 | /* FCE Ultra - NES/Famicom Emulator |
2 | * |
3 | * Copyright notice for this file: |
4 | * Copyright (C) 2002 Ben Parnell |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License as published by |
8 | * the Free Software Foundation; either version 2 of the License, or |
9 | * (at your option) any later version. |
10 | * |
11 | * This program is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * GNU General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU General Public License |
17 | * along with this program; if not, write to the Free Software |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | */ |
20 | |
21 | #include "mapinc.h" |
22 | |
23 | static uint8 cmd; |
24 | static uint8 latch[8]; |
25 | #define CHRRAM (GameMemBlock) |
26 | |
27 | static void S74LS374NSynco(void) |
28 | { |
29 | setprg32(0x8000,latch[0]); |
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30 | X6502_Rebase(); |
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31 | setchr8(latch[1]); |
32 | setmirror(latch[2]&1); |
33 | // setchr8(6); |
34 | } |
35 | |
36 | static DECLFW(S74LS374NWrite) |
37 | { |
38 | //printf("$%04x:$%02x\n",A,V); |
39 | A&=0x4101; |
40 | if(A==0x4100) |
41 | cmd=V&7; |
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42 | else |
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43 | { |
44 | switch(cmd) |
45 | { |
46 | case 0:latch[0]=0;latch[1]=3;break; |
47 | case 4:latch[1]&=3;latch[1]|=(V<<2);break; |
48 | case 5:latch[0]=V&0x7;break; |
49 | case 6:latch[1]&=0x1C;latch[1]|=V&3;break; |
50 | case 7:latch[2]=V&1;break; |
51 | } |
52 | S74LS374NSynco(); |
53 | } |
54 | } |
55 | |
56 | static void S74LS374NReset(void) |
57 | { |
58 | latch[0]=latch[2]=0; |
59 | latch[1]=3; |
60 | S74LS374NSynco(); |
61 | SetReadHandler(0x8000,0xFFFF,CartBR); |
62 | SetWriteHandler(0x4100,0x7FFF,S74LS374NWrite); |
63 | } |
64 | |
65 | static void S74LS374NRestore(int version) |
66 | { |
67 | S74LS374NSynco(); |
68 | } |
69 | |
70 | void S74LS374N_Init(void) |
71 | { |
72 | BoardPower=S74LS374NReset; |
73 | GameStateRestore=S74LS374NRestore; |
74 | AddExState(latch, 3, 0, "LATC"); |
75 | AddExState(&cmd, 1, 0, "CMD"); |
76 | } |
77 | |
78 | static int type; |
79 | static void S8259Synco(void) |
80 | { |
81 | int x; |
82 | |
83 | setprg32(0x8000,latch[5]&7); |
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84 | X6502_Rebase(); |
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85 | |
86 | if(!UNIFchrrama) // No CHR RAM? Then BS'ing is ok. |
87 | { |
88 | if(!type) |
89 | { |
90 | for(x=0;x<4;x++) |
91 | setchr2(0x800*x,(x&1)|((latch[x]&7)<<1)|((latch[4]&7)<<4)); |
92 | } |
93 | else |
94 | { |
95 | for(x=0;x<4;x++) |
96 | setchr2(0x800*x,(latch[x]&0x7)|((latch[4]&7)<<3)); |
97 | } |
98 | } |
99 | switch((latch[7]>>1)&3) |
100 | { |
101 | case 0:setmirrorw(0,0,0,1);break; |
102 | case 1:setmirror(MI_H);break; |
103 | case 2:setmirror(MI_V);break; |
104 | case 3:setmirror(MI_0);break; |
105 | } |
106 | } |
107 | |
108 | static DECLFW(S8259Write) |
109 | { |
110 | A&=0x4101; |
111 | if(A==0x4100) cmd=V; |
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112 | else |
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113 | { |
114 | latch[cmd&7]=V; |
115 | S8259Synco(); |
116 | } |
117 | } |
118 | |
119 | static void S8259Reset(void) |
120 | { |
121 | int x; |
122 | cmd=0; |
123 | |
124 | for(x=0;x<8;x++) latch[x]=0; |
125 | if(UNIFchrrama) setchr8(0); |
126 | |
127 | S8259Synco(); |
128 | SetReadHandler(0x8000,0xFFFF,CartBR); |
129 | SetWriteHandler(0x4100,0x7FFF,S8259Write); |
130 | } |
131 | |
132 | static void S8259Restore(int version) |
133 | { |
134 | S8259Synco(); |
135 | } |
136 | |
137 | void S8259A_Init(void) |
138 | { |
139 | BoardPower=S8259Reset; |
140 | GameStateRestore=S8259Restore; |
141 | AddExState(latch, 8, 0, "LATC"); |
142 | AddExState(&cmd, 1, 0, "CMD"); |
143 | type=0; |
144 | |
145 | //if(!CHRsize[0]) |
146 | //{ |
147 | // SetupCartCHRMapping(0,CHRRAM,8192,1); |
148 | // AddExState(CHRRAM, 8192, 0, "CHRR"); |
149 | //} |
150 | } |
151 | |
152 | void S8259B_Init(void) |
153 | { |
154 | BoardPower=S8259Reset; |
155 | GameStateRestore=S8259Restore; |
156 | AddExState(latch, 8, 0, "LATC"); |
157 | AddExState(&cmd, 1, 0, "CMD"); |
158 | type=1; |
159 | } |
160 | |
161 | static void(*WSync)(void); |
162 | |
163 | static void SA0161MSynco() |
164 | { |
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165 | setprg32(0x8000,(latch[0]>>3)&1); |
166 | X6502_Rebase(); |
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167 | setchr8(latch[0]&7); |
168 | } |
169 | |
170 | static DECLFW(SAWrite) |
171 | { |
172 | if(A&0x100) |
173 | { |
174 | latch[0]=V; |
175 | WSync(); |
176 | } |
177 | } |
178 | |
179 | static void SAReset(void) |
180 | { |
181 | latch[0]=0; |
182 | WSync(); |
183 | SetReadHandler(0x8000,0xFFFF,CartBR); |
184 | SetWriteHandler(0x4100,0x5FFF,SAWrite); |
185 | } |
186 | |
187 | void SA0161M_Init(void) |
188 | { |
189 | WSync=SA0161MSynco; |
190 | GameStateRestore=SA0161MSynco; |
191 | BoardPower=SAReset; |
192 | AddExState(&latch[0], 1, 0, "LATC"); |
193 | } |
194 | |
195 | static void SA72007Synco() |
196 | { |
197 | setprg32(0x8000,0); |
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198 | X6502_Rebase(); |
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199 | setchr8(latch[0]>>7); |
200 | } |
201 | |
202 | void SA72007_Init(void) |
203 | { |
204 | WSync=SA72007Synco; |
205 | GameStateRestore=SA72007Synco; |
206 | BoardPower=SAReset; |
207 | AddExState(&latch[0], 1, 0, "LATC"); |
208 | } |
209 | |
210 | static void SA72008Synco() |
211 | { |
212 | setprg32(0x8000,(latch[0]>>2)&1); |
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213 | X6502_Rebase(); |
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214 | setchr8(latch[0]&3); |
215 | } |
216 | |
217 | void SA72008_Init(void) |
218 | { |
219 | WSync=SA72008Synco; |
220 | GameStateRestore=SA72008Synco; |
221 | BoardPower=SAReset; |
222 | AddExState(&latch[0], 1, 0, "LATC"); |
223 | } |
224 | |
225 | static DECLFW(SADWrite) |
226 | { |
227 | latch[0]=V; |
228 | WSync(); |
229 | } |
230 | |
231 | static void SADReset(void) |
232 | { |
233 | latch[0]=0; |
234 | WSync(); |
235 | SetReadHandler(0x8000,0xFFFF,CartBR); |
236 | SetWriteHandler(0x8000,0xFFFF,SADWrite); |
237 | } |
238 | |
239 | static void SA0036Synco() |
240 | { |
241 | setprg32(0x8000,0); |
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242 | X6502_Rebase(); |
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243 | setchr8(latch[0]>>7); |
244 | } |
245 | |
246 | static void SA0037Synco() |
247 | { |
248 | setprg32(0x8000,(latch[0]>>3)&1); |
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249 | X6502_Rebase(); |
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250 | setchr8(latch[0]&7); |
251 | } |
252 | |
253 | void SA0036_Init(void) |
254 | { |
255 | WSync=SA0036Synco; |
256 | GameStateRestore=SA0036Synco; |
257 | BoardPower=SADReset; |
258 | AddExState(&latch[0], 1, 0, "LATC"); |
259 | } |
260 | |
261 | void SA0037_Init(void) |
262 | { |
263 | WSync=SA0037Synco; |
264 | GameStateRestore=SA0037Synco; |
265 | BoardPower=SADReset; |
266 | AddExState(&latch[0], 1, 0, "LATC"); |
267 | } |
268 | |
269 | static void TCU01Synco() |
270 | { |
271 | setprg32(0x8000,(latch[0]>>2)&1); |
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272 | X6502_Rebase(); |
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273 | setchr8((latch[0]>>3)&0xF); |
274 | } |
275 | |
276 | static DECLFW(TCWrite) |
277 | { |
278 | if((A&0x103)==0x102) |
279 | latch[0]=V; |
280 | TCU01Synco(); |
281 | } |
282 | |
283 | static void TCU01Reset(void) |
284 | { |
285 | latch[0]=0; |
286 | SetReadHandler(0x8000,0xFFFF,CartBR); |
287 | SetWriteHandler(0x4100,0xFFFF,TCWrite); |
288 | TCU01Synco(); |
289 | } |
290 | |
291 | void TCU01_Init(void) |
292 | { |
293 | GameStateRestore=TCU01Synco; |
294 | BoardPower=TCU01Reset; |
295 | AddExState(&latch[0], 1, 0, "LATC"); |
296 | } |
297 | |