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1 | /* FCE Ultra - NES/Famicom Emulator |
2 | * |
3 | * Copyright notice for this file: |
4 | * Copyright (C) 2002 Xodnizel |
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 |
386f5371 |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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19 | */ |
20 | |
21 | #include "mapinc.h" |
22 | |
23 | static uint16 IRQCount; |
24 | static uint8 IRQa; |
25 | |
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26 | static uint8 WRAM[8192]; |
27 | static uint8 IRAM[128]; |
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28 | |
29 | static DECLFR(AWRAM) |
30 | { |
31 | return(WRAM[A-0x6000]); |
32 | } |
33 | |
34 | static DECLFW(BWRAM) |
35 | { |
36 | WRAM[A-0x6000]=V; |
37 | } |
38 | |
39 | void Mapper19_ESI(void); |
40 | |
41 | static uint8 NTAPage[4]; |
42 | |
43 | static uint8 dopol; |
44 | static uint8 gorfus; |
45 | static uint8 gorko; |
46 | |
47 | static void NamcoSound(int Count); |
48 | static void NamcoSoundHack(void); |
49 | static void DoNamcoSound(int32 *Wave, int Count); |
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50 | static void DoNamcoSoundHQ(void); |
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51 | static void SyncHQ(int32 ts); |
52 | |
53 | static int is210; /* Lesser mapper. */ |
54 | |
55 | static uint8 PRG[3]; |
56 | static uint8 CHR[8]; |
57 | |
58 | static SFORMAT N106_StateRegs[]={ |
59 | {PRG,3,"PRG"}, |
60 | {CHR,8,"CHR"}, |
61 | {NTAPage,4,"NTA"}, |
62 | {0} |
63 | }; |
64 | |
65 | static void SyncPRG(void) |
66 | { |
67 | setprg8(0x8000,PRG[0]); |
68 | setprg8(0xa000,PRG[1]); |
69 | setprg8(0xc000,PRG[2]); |
70 | setprg8(0xe000,0x3F); |
71 | } |
72 | |
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73 | static void NamcoIRQHook(int a) |
d97315ac |
74 | { |
75 | if(IRQa) |
76 | { |
77 | IRQCount+=a; |
78 | if(IRQCount>=0x7FFF) |
79 | { |
80 | X6502_IRQBegin(FCEU_IQEXT); |
81 | IRQa=0; |
82 | IRQCount=0x7FFF; //7FFF; |
83 | } |
84 | } |
85 | } |
86 | |
87 | static DECLFR(Namco_Read4800) |
88 | { |
89 | uint8 ret=IRAM[dopol&0x7f]; |
90 | /* Maybe I should call NamcoSoundHack() here? */ |
91 | if(!fceuindbg) |
92 | if(dopol&0x80) |
93 | dopol=(dopol&0x80)|((dopol+1)&0x7f); |
94 | return ret; |
95 | } |
96 | |
97 | static DECLFR(Namco_Read5000) |
98 | { |
99 | return(IRQCount); |
100 | } |
101 | |
102 | static DECLFR(Namco_Read5800) |
103 | { |
104 | return(IRQCount>>8); |
105 | } |
106 | |
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107 | static void DoNTARAMROM(int w, uint8 V) |
d97315ac |
108 | { |
109 | NTAPage[w]=V; |
110 | if(V>=0xE0) |
111 | setntamem(NTARAM+((V&1)<<10), 1, w); |
112 | else |
113 | { |
114 | V&=CHRmask1[0]; |
115 | setntamem(CHRptr[0]+(V<<10), 0, w); |
116 | } |
117 | } |
118 | |
119 | static void FixNTAR(void) |
120 | { |
121 | int x; |
122 | for(x=0;x<4;x++) |
123 | DoNTARAMROM(x,NTAPage[x]); |
124 | } |
125 | |
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126 | static void DoCHRRAMROM(int x, uint8 V) |
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127 | { |
128 | CHR[x]=V; |
129 | if(!is210 && !((gorfus>>((x>>2)+6))&1) && (V>=0xE0)) |
130 | { |
131 | // printf("BLAHAHA: %d, %02x\n",x,V); |
132 | //setchr1r(0x10,x<<10,V&7); |
133 | } |
134 | else |
135 | setchr1(x<<10,V); |
136 | } |
137 | |
138 | static void FixCRR(void) |
139 | { |
140 | int x; |
141 | for(x=0;x<8;x++) |
142 | DoCHRRAMROM(x,CHR[x]); |
143 | } |
144 | |
145 | static DECLFW(Mapper19C0D8_write) |
146 | { |
147 | DoNTARAMROM((A-0xC000)>>11,V); |
148 | } |
149 | |
150 | static uint32 FreqCache[8]; |
151 | static uint32 EnvCache[8]; |
152 | static uint32 LengthCache[8]; |
153 | |
154 | static void FixCache(int a,int V) |
155 | { |
156 | int w=(a>>3)&0x7; |
157 | switch(a&0x07) |
158 | { |
159 | case 0x00:FreqCache[w]&=~0x000000FF;FreqCache[w]|=V;break; |
160 | case 0x02:FreqCache[w]&=~0x0000FF00;FreqCache[w]|=V<<8;break; |
161 | case 0x04:FreqCache[w]&=~0x00030000;FreqCache[w]|=(V&3)<<16; |
162 | LengthCache[w]=(8-((V>>2)&7))<<2; |
163 | break; |
164 | case 0x07:EnvCache[w]=(double)(V&0xF)*576716;break; |
165 | } |
166 | } |
167 | |
168 | static DECLFW(Mapper19_write) |
169 | { |
170 | A&=0xF800; |
171 | if(A>=0x8000 && A<=0xb800) |
172 | DoCHRRAMROM((A-0x8000)>>11,V); |
173 | else switch(A) |
174 | { |
175 | case 0x4800: |
176 | if(dopol&0x40) |
177 | { |
178 | if(FSettings.SndRate) |
179 | { |
180 | NamcoSoundHack(); |
181 | GameExpSound.Fill=NamcoSound; |
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182 | GameExpSound.HiFill=DoNamcoSoundHQ; |
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183 | GameExpSound.HiSync=SyncHQ; |
184 | } |
185 | FixCache(dopol,V); |
186 | } |
187 | IRAM[dopol&0x7f]=V; |
188 | if(dopol&0x80) |
189 | dopol=(dopol&0x80)|((dopol+1)&0x7f); |
190 | break; |
191 | case 0xf800: |
192 | dopol=V;break; |
193 | case 0x5000: |
194 | IRQCount&=0xFF00;IRQCount|=V;X6502_IRQEnd(FCEU_IQEXT);break; |
195 | case 0x5800: |
196 | IRQCount&=0x00ff;IRQCount|=(V&0x7F)<<8; |
197 | IRQa=V&0x80; |
198 | X6502_IRQEnd(FCEU_IQEXT); |
199 | break; |
200 | case 0xE000: |
201 | gorko=V&0xC0; |
202 | PRG[0]=V&0x3F; |
203 | SyncPRG(); |
204 | break; |
205 | case 0xE800: |
206 | gorfus=V&0xC0; |
207 | FixCRR(); |
208 | PRG[1]=V&0x3F; |
209 | SyncPRG(); |
210 | break; |
211 | case 0xF000: |
212 | PRG[2]=V&0x3F; |
213 | SyncPRG(); |
214 | break; |
215 | } |
216 | } |
217 | |
218 | static int dwave=0; |
219 | |
220 | static void NamcoSoundHack(void) |
221 | { |
222 | int32 z,a; |
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223 | if(FSettings.soundq>=1) |
224 | { |
225 | DoNamcoSoundHQ(); |
226 | return; |
227 | } |
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228 | z=((SOUNDTS<<16)/soundtsinc)>>4; |
229 | a=z-dwave; |
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230 | if(a) DoNamcoSound(&Wave[dwave], a); |
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231 | dwave+=a; |
232 | } |
233 | |
234 | static void NamcoSound(int Count) |
235 | { |
236 | int32 z,a; |
237 | z=((SOUNDTS<<16)/soundtsinc)>>4; |
238 | a=z-dwave; |
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239 | if(a) DoNamcoSound(&Wave[dwave], a); |
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240 | dwave=0; |
241 | } |
242 | |
243 | static uint32 PlayIndex[8]; |
244 | static int32 vcount[8]; |
245 | static int32 CVBC; |
246 | |
247 | #define TOINDEX (16+1) |
248 | |
249 | // 16:15 |
250 | static void SyncHQ(int32 ts) |
251 | { |
252 | CVBC=ts; |
253 | } |
254 | |
255 | |
256 | /* Things to do: |
257 | 1 Read freq low |
258 | 2 Read freq mid |
259 | 3 Read freq high |
260 | 4 Read envelope |
261 | ...? |
262 | */ |
263 | |
264 | static INLINE uint32 FetchDuff(uint32 P, uint32 envelope) |
265 | { |
266 | uint32 duff; |
267 | duff=IRAM[((IRAM[0x46+(P<<3)]+(PlayIndex[P]>>TOINDEX))&0xFF)>>1]; |
268 | if((IRAM[0x46+(P<<3)]+(PlayIndex[P]>>TOINDEX))&1) |
269 | duff>>=4; |
270 | duff&=0xF; |
271 | duff=(duff*envelope)>>16; |
272 | return(duff); |
273 | } |
274 | |
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275 | static void DoNamcoSoundHQ(void) |
276 | { |
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277 | uint32 V; //mbg merge 7/17/06 made uint32 |
278 | int32 P; |
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279 | int32 cyclesuck=(((IRAM[0x7F]>>4)&7)+1)*15; |
280 | |
281 | for(P=7;P>=(7-((IRAM[0x7F]>>4)&7));P--) |
282 | { |
283 | if((IRAM[0x44+(P<<3)]&0xE0) && (IRAM[0x47+(P<<3)]&0xF)) |
284 | { |
285 | uint32 freq; |
286 | int32 vco; |
287 | uint32 duff2,lengo,envelope; |
288 | |
289 | vco=vcount[P]; |
290 | freq=FreqCache[P]; |
291 | envelope=EnvCache[P]; |
292 | lengo=LengthCache[P]; |
293 | |
294 | duff2=FetchDuff(P,envelope); |
295 | for(V=CVBC<<1;V<SOUNDTS<<1;V++) |
296 | { |
297 | WaveHi[V>>1]+=duff2; |
298 | if(!vco) |
299 | { |
300 | PlayIndex[P]+=freq; |
301 | while((PlayIndex[P]>>TOINDEX)>=lengo) PlayIndex[P]-=lengo<<TOINDEX; |
302 | duff2=FetchDuff(P,envelope); |
303 | vco=cyclesuck; |
304 | } |
305 | vco--; |
306 | } |
307 | vcount[P]=vco; |
308 | } |
309 | } |
310 | CVBC=SOUNDTS; |
311 | } |
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312 | |
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313 | |
314 | static void DoNamcoSound(int32 *Wave, int Count) |
315 | { |
316 | int P,V; |
317 | for(P=7;P>=7-((IRAM[0x7F]>>4)&7);P--) |
318 | { |
319 | if((IRAM[0x44+(P<<3)]&0xE0) && (IRAM[0x47+(P<<3)]&0xF)) |
320 | { |
321 | int32 inc; |
322 | uint32 freq; |
323 | int32 vco; |
324 | uint32 duff,duff2,lengo,envelope; |
325 | |
326 | vco=vcount[P]; |
327 | freq=FreqCache[P]; |
328 | envelope=EnvCache[P]; |
329 | lengo=LengthCache[P]; |
330 | |
331 | if(!freq) {/*printf("Ack");*/ continue;} |
332 | |
333 | { |
334 | int c=((IRAM[0x7F]>>4)&7)+1; |
335 | inc=(long double)(FSettings.SndRate<<15)/((long double)freq*21477272/((long double)0x400000*c*45)); |
336 | } |
337 | |
338 | duff=IRAM[(((IRAM[0x46+(P<<3)]+PlayIndex[P])&0xFF)>>1)]; |
339 | if((IRAM[0x46+(P<<3)]+PlayIndex[P])&1) |
340 | duff>>=4; |
341 | duff&=0xF; |
342 | duff2=(duff*envelope)>>19; |
343 | for(V=0;V<Count*16;V++) |
344 | { |
345 | if(vco>=inc) |
346 | { |
347 | PlayIndex[P]++; |
348 | if(PlayIndex[P]>=lengo) |
349 | PlayIndex[P]=0; |
350 | vco-=inc; |
351 | duff=IRAM[(((IRAM[0x46+(P<<3)]+PlayIndex[P])&0xFF)>>1)]; |
352 | if((IRAM[0x46+(P<<3)]+PlayIndex[P])&1) |
353 | duff>>=4; |
354 | duff&=0xF; |
355 | duff2=(duff*envelope)>>19; |
356 | } |
357 | Wave[V>>4]+=duff2; |
358 | vco+=0x8000; |
359 | } |
360 | vcount[P]=vco; |
361 | } |
362 | } |
363 | } |
364 | |
365 | static void Mapper19_StateRestore(int version) |
366 | { |
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367 | int x; |
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368 | SyncPRG(); |
369 | FixNTAR(); |
370 | FixCRR(); |
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371 | for(x=0x40;x<0x80;x++) |
372 | FixCache(x,IRAM[x]); |
373 | } |
374 | |
375 | static void M19SC(void) |
376 | { |
377 | if(FSettings.SndRate) |
378 | Mapper19_ESI(); |
379 | } |
380 | |
381 | void Mapper19_ESI(void) |
382 | { |
383 | GameExpSound.RChange=M19SC; |
384 | memset(vcount,0,sizeof(vcount)); |
385 | memset(PlayIndex,0,sizeof(PlayIndex)); |
386 | CVBC=0; |
387 | } |
388 | |
389 | void NSFN106_Init(void) |
390 | { |
391 | SetWriteHandler(0xf800,0xffff,Mapper19_write); |
392 | SetWriteHandler(0x4800,0x4fff,Mapper19_write); |
393 | SetReadHandler(0x4800,0x4fff,Namco_Read4800); |
394 | Mapper19_ESI(); |
395 | } |
396 | |
397 | static int battery=0; |
398 | |
399 | static void N106_Power(void) |
400 | { |
401 | int x; |
402 | SetReadHandler(0x8000,0xFFFF,CartBR); |
403 | SetWriteHandler(0x8000,0xffff,Mapper19_write); |
404 | SetWriteHandler(0x4020,0x5fff,Mapper19_write); |
405 | if(!is210) |
406 | { |
407 | SetWriteHandler(0xc000,0xdfff,Mapper19C0D8_write); |
408 | SetReadHandler(0x4800,0x4fff,Namco_Read4800); |
409 | SetReadHandler(0x5000,0x57ff,Namco_Read5000); |
410 | SetReadHandler(0x5800,0x5fff,Namco_Read5800); |
411 | NTAPage[0]=NTAPage[1]=NTAPage[2]=NTAPage[3]=0xFF; |
412 | FixNTAR(); |
413 | } |
414 | |
415 | SetReadHandler(0x6000,0x7FFF,AWRAM); |
416 | SetWriteHandler(0x6000,0x7FFF,BWRAM); |
417 | FCEU_CheatAddRAM(8,0x6000,WRAM); |
418 | |
419 | gorfus=0xFF; |
420 | SyncPRG(); |
421 | FixCRR(); |
422 | |
423 | if(!battery) |
424 | { |
425 | FCEU_dwmemset(WRAM,0,8192); |
426 | FCEU_dwmemset(IRAM,0,128); |
427 | } |
428 | for(x=0x40;x<0x80;x++) |
429 | FixCache(x,IRAM[x]); |
430 | } |
431 | |
432 | void Mapper19_Init(CartInfo *info) |
433 | { |
434 | is210=0; |
435 | battery=info->battery; |
436 | info->Power=N106_Power; |
437 | |
438 | MapIRQHook=NamcoIRQHook; |
439 | GameStateRestore=Mapper19_StateRestore; |
440 | GameExpSound.RChange=M19SC; |
441 | |
442 | if(FSettings.SndRate) |
443 | Mapper19_ESI(); |
444 | |
445 | AddExState(WRAM, 8192, 0, "WRAM"); |
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446 | AddExState(IRAM, 128, 0, "IRAM"); |
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447 | AddExState(N106_StateRegs, ~0, 0, 0); |
448 | |
449 | if(info->battery) |
450 | { |
451 | info->SaveGame[0]=WRAM; |
452 | info->SaveGameLen[0]=8192; |
453 | info->SaveGame[1]=IRAM; |
454 | info->SaveGameLen[1]=128; |
455 | } |
456 | } |
457 | |
458 | static void Mapper210_StateRestore(int version) |
459 | { |
460 | SyncPRG(); |
461 | FixCRR(); |
462 | } |
463 | |
464 | void Mapper210_Init(CartInfo *info) |
465 | { |
466 | is210=1; |
467 | GameStateRestore=Mapper210_StateRestore; |
468 | info->Power=N106_Power; |
469 | AddExState(WRAM, 8192, 0, "WRAM"); |
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470 | AddExState(N106_StateRegs, ~0, 0, 0); |
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471 | } |