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merge mapper code from FCEUX
[fceu.git] / fce.c
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c62d2810 1/* FCE Ultra - NES/Famicom Emulator
2 *
3 * Copyright notice for this file:
15300263 4 * Copyright (C) 1998 BERO
c62d2810 5 * Copyright (C) 2002 Ben Parnell
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22#include <string.h>
23#include <stdio.h>
24#include <stdlib.h>
25
26#include "types.h"
27#include "x6502.h"
28#include "fce.h"
6244011f 29#include "fceu098.h"
c62d2810 30#include "sound.h"
77887306 31#include "svga.h"
c62d2810 32#include "netplay.h"
33#include "general.h"
34#include "endian.h"
35#include "version.h"
36#include "memory.h"
37
38#include "cart.h"
39#include "nsf.h"
40#include "fds.h"
41#include "ines.h"
42#include "unif.h"
15d2d258 43#include "vsuni.h"
c62d2810 44#include "cheat.h"
45
46#include "state.h"
47#include "video.h"
48#include "input.h"
49#include "file.h"
50#include "crc32.h"
5232c20c 51#include "ppu.h"
642070a9 52#include "ppu098.h"
c62d2810 53
92764e62 54#include "palette.h"
5a2aa426 55#include "movie.h"
56
4fdfab07 57#include "dprintf.h"
58
c8c88d89 59#ifdef __arm__
60#include "drivers/arm/asmutils.h"
6587f346 61#endif
62
c62d2810 63#define Pal (PALRAM)
64
5232c20c 65
4a1bf31b 66static void (*RefreshLine)(uint8 *P, uint32 vofs) = NULL;
c62d2810 67static void PRefreshLine(void);
5232c20c 68
c62d2810 69static void ResetPPU(void);
70static void PowerPPU(void);
71
72uint64 timestampbase=0;
73
6244011f 74int ppudead=1;
75int kook=0;
4fdfab07 76
c62d2810 77int MMC5Hack;
78uint32 MMC5HackVROMMask;
79uint8 *MMC5HackExNTARAMPtr;
80uint8 *MMC5HackVROMPTR;
15300263 81uint8 MMC5HackCHRMode=0;
c62d2810 82uint8 MMC5HackSPMode;
83uint8 MMC5HackSPScroll;
84uint8 MMC5HackSPPage;
85
86uint8 *MMC5SPRVPage[8];
87uint8 *MMC5BGVPage[8];
88
89
90uint8 VRAMBuffer,PPUGenLatch;
91
92uint8 *vnapage[4];
93uint8 PPUNTARAM;
94uint8 PPUCHRRAM;
95
96/* Color deemphasis emulation. Joy... */
97static uint8 deemp=0;
98static int deempcnt[8];
99
c62d2810 100FCEUGI FCEUGameInfo;
386f5371 101FCEUGI *GameInfo = &FCEUGameInfo;
c4980f9e 102void (*GameInterface)(int h, void *param);
c62d2810 103
104void FP_FASTAPASS(1) (*PPU_hook)(uint32 A);
105
106void (*GameStateRestore)(int version);
d97315ac 107void (*GameHBIRQHook)(void), (*GameHBIRQHook2)(void);
c62d2810 108
109readfunc ARead[0x10000];
110writefunc BWrite[0x10000];
111static readfunc *AReadG;
112static writefunc *BWriteG;
113static int RWWrap=0;
114
92e249b1 115#ifdef ASM_6502
282becab 116#ifdef DEBUG_ASM_6502
117extern uint8 nes_internal_ram[0x800];
118#else
92e249b1 119static void asmcpu_update(int32 cycles)
120{
92e249b1 121 // some code from x6502.c
122 fhcnt-=cycles;
123 if(fhcnt<=0)
124 {
125 FrameSoundUpdate();
126 fhcnt+=fhinc;
127 }
128
129 if(PCMIRQCount>0)
130 {
131 PCMIRQCount-=cycles;
132 if(PCMIRQCount<=0)
133 {
134 vdis=1;
135 if((PSG[0x10]&0x80) && !(PSG[0x10]&0x40))
136 {
137 extern uint8 SIRQStat;
138 SIRQStat|=0x80;
139 X6502_IRQBegin(FCEU_IQDPCM);
140 }
141 }
142 }
143}
cd9a6b51 144#endif
92e249b1 145
146void asmcpu_unpack(void)
147{
148 nes_registers[0] = X.A << 24;
149 nes_registers[1] = X.X;
150 nes_registers[2] = X.Y;
151 pc_base = 0;
152 nes_registers[3] = X.PC;
c0bf6f9f 153 X6502_Rebase_a();
92e249b1 154 nes_registers[4] = X.S << 24;
155 nes_registers[4]|= X.IRQlow << 8;
0bb3fe12 156 if (MapIRQHook)
157 nes_registers[4] |= 1<<16; // MapIRQHook set bit
8fa5eb33 158 nes_registers[7] = (uint32)X.count << 16;
92e249b1 159
160 // NVUB DIZC
161 nes_registers[4]|= X.P & 0x5d;
162 nes_registers[5] = X.P << 24; // N
163 if (!(X.P&0x02)) nes_registers[5] |= 1; // Z
282becab 164
165#ifdef DEBUG_ASM_6502
166 memcpy(nes_internal_ram, RAM, 0x800);
167#endif
92e249b1 168}
169
170void asmcpu_pack(void)
171{
172 X.A = nes_registers[0] >> 24;
173 X.X = nes_registers[1];
174 X.Y = nes_registers[2];
175 X.PC= nes_registers[3] - pc_base;
176 X.S = nes_registers[4] >> 24;
177 X.IRQlow = nes_registers[4] >> 8;
8fa5eb33 178 X.count = (int32) nes_registers[7] >> 16;
92e249b1 179
180 // NVUB DIZC
181 X.P = nes_registers[4] & 0x5d;
182 if ( nes_registers[5]&0x80000000) X.P |= 0x80; // N
183 if (!(nes_registers[5]&0x000000ff)) X.P |= 0x02; // Z
184}
185#endif
186
c62d2810 187DECLFW(BNull)
188{
189
190}
191
192DECLFR(ANull)
193{
282becab 194 //printf("open [%04x] %02x @ %04x (%04x)\n", A, X.DB, X.PC, X.PC&0x7ff);
c62d2810 195 return(X.DB);
196}
197
198int AllocGenieRW(void)
199{
200 if(!(AReadG=FCEU_malloc(0x8000*sizeof(readfunc))))
201 return 0;
202 if(!(BWriteG=FCEU_malloc(0x8000*sizeof(writefunc))))
203 return 0;
204 RWWrap=1;
205 return 1;
206}
207
208void FlushGenieRW(void)
209{
210 int32 x;
211
212 if(RWWrap)
213 {
214 for(x=0;x<0x8000;x++)
215 {
216 ARead[x+0x8000]=AReadG[x];
217 BWrite[x+0x8000]=BWriteG[x];
218 }
b8da43fb 219#ifdef ASM_6502
220 GenieSetPages(1);
221#endif
c62d2810 222 free(AReadG);
223 free(BWriteG);
224 AReadG=0;
225 BWriteG=0;
226 RWWrap=0;
227 }
228}
229
230readfunc FASTAPASS(1) GetReadHandler(int32 a)
231{
232 if(a>=0x8000 && RWWrap)
233 return AReadG[a-0x8000];
234 else
235 return ARead[a];
236}
237
238void FASTAPASS(3) SetReadHandler(int32 start, int32 end, readfunc func)
239{
240 int32 x;
241
242 if(!func)
243 func=ANull;
244
245 if(RWWrap)
246 for(x=end;x>=start;x--)
247 {
248 if(x>=0x8000)
249 AReadG[x-0x8000]=func;
250 else
251 ARead[x]=func;
252 }
253 else
254
255 for(x=end;x>=start;x--)
256 ARead[x]=func;
257}
258
259writefunc FASTAPASS(1) GetWriteHandler(int32 a)
260{
261 if(RWWrap && a>=0x8000)
262 return BWriteG[a-0x8000];
263 else
264 return BWrite[a];
265}
266
267void FASTAPASS(3) SetWriteHandler(int32 start, int32 end, writefunc func)
268{
269 int32 x;
270
271 if(!func)
272 func=BNull;
273
274 if(RWWrap)
275 for(x=end;x>=start;x--)
276 {
277 if(x>=0x8000)
278 BWriteG[x-0x8000]=func;
279 else
280 BWrite[x]=func;
281 }
282 else
283 for(x=end;x>=start;x--)
284 BWrite[x]=func;
285}
286
287uint8 vtoggle=0;
288uint8 XOffset=0;
289
290uint32 TempAddr,RefreshAddr;
291
c62d2810 292
293/* scanline is equal to the current visible scanline we're on. */
294
295int scanline;
c62d2810 296
9115e7d2 297uint8 GameMemBlock[131072] __attribute__ ((aligned (4)));
298uint8 NTARAM[0x800] __attribute__ ((aligned (4)));
299uint8 PALRAM[0x20] __attribute__ ((aligned (4)));
92e249b1 300#if !defined(ASM_6502) || defined(DEBUG_ASM_6502)
9115e7d2 301uint8 RAM[0x800] __attribute__ ((aligned (4)));
af32b6c2 302#endif
9115e7d2 303
c62d2810 304uint8 PPU[4];
305uint8 PPUSPL;
306
c62d2810 307uint8 PAL=0;
308
5232c20c 309
c62d2810 310#define MMC5BGVRAMADR(V) &MMC5BGVPage[(V)>>10][(V)]
311#define VRAMADR(V) &VPage[(V)>>10][(V)]
15300263 312
4fdfab07 313static int linestartts;
314static int tofix=0;
315
e328100e 316static uint8 *Plinef;
317
318extern uint8 sprlinebuf[256+8];
319extern int32 sphitx;
320extern uint8 sphitdata;
321
322extern int spork; /* spork the world. Any sprites on this line?
323 Then this will be set to 1. Needed for zapper
324 emulation and *gasp* sprite emulation.
325 */
326
327static void ResetRL(uint8 *target)
4fdfab07 328{
e328100e 329 if(InputScanlineHook)
330 InputScanlineHook(0,0,0,0);
331 Plinef=target;
4fdfab07 332 linestartts=timestamp*48+X6502_GetCycleCount();
333 tofix=1;
334}
335
336static INLINE void Fixit1(void);
337
e328100e 338/* faking FCEUPPU_LineUpdate() from later versions of the emu */
339static void FakedLineUpdate(void)
4fdfab07 340{
341 #define TOFIXNUM (272-0x4)
342 int lastpixel;
343
e328100e 344 if (scanline >= 240) return;
345
346 if (tofix || sphitx != 0x100)
4fdfab07 347 {
348 lastpixel = (timestamp*48-linestartts)>>4;
349 if (PAL) lastpixel += lastpixel>>4;
4fdfab07 350 //printf("lastpixel: %i\n", lastpixel);
e328100e 351 }
352
353 if (tofix && lastpixel>=TOFIXNUM)
354 {
355 Fixit1();
356 tofix=0;
357 }
4fdfab07 358
e328100e 359 // CheckSpriteHit()
360 if(sphitx!=0x100)
361 {
362 int l=lastpixel-16;
363 int x;
364
365 for(x=sphitx;x<(sphitx+8) && x<l;x++)
4fdfab07 366 {
e328100e 367 if((sphitdata&(0x80>>(x-sphitx))) && !(Plinef[x]&64))
368 {
369 PPU_status|=0x40;
370 sphitx=0x100;
371 break;
372 }
4fdfab07 373 }
374 }
375}
376
377
c62d2810 378static DECLFW(BRAML)
15300263 379{
c62d2810 380 RAM[A]=V;
381}
382
383static DECLFW(BRAMH)
384{
385 RAM[A&0x7FF]=V;
386}
387
388static DECLFR(ARAML)
389{
390 return RAM[A];
391}
392
393static DECLFR(ARAMH)
394{
395 return RAM[A&0x7FF];
396}
397
15300263 398
c62d2810 399static DECLFR(A2002)
400{
4fdfab07 401 /* merged */
c62d2810 402 uint8 ret;
4fdfab07 403
e328100e 404 FakedLineUpdate();
c62d2810 405 ret = PPU_status;
4fdfab07 406 ret|=PPUGenLatch&0x1F;
c62d2810 407 vtoggle=0;
408 PPU_status&=0x7F;
4fdfab07 409 PPUGenLatch=ret;
ea80a45b 410 //dprintf("r [2002] %02x",ret);
4fdfab07 411 return ret;
c62d2810 412}
413
414static DECLFR(A200x)
415{
4fdfab07 416 /* merged */
e328100e 417 FakedLineUpdate();
c62d2810 418 return PPUGenLatch;
419}
420
421static DECLFR(A2007)
422{
4fdfab07 423 /* merged */
c62d2810 424 uint8 ret;
425 uint32 tmp=RefreshAddr&0x3FFF;
426
e328100e 427 FakedLineUpdate();
4fdfab07 428
429 ret=VRAMBuffer;
430
c62d2810 431 if(PPU_hook) PPU_hook(tmp);
4fdfab07 432 PPUGenLatch=VRAMBuffer;
15300263 433 if(tmp<0x2000)
c62d2810 434 {
435 VRAMBuffer=VPage[tmp>>10][tmp];
436 }
15300263 437 else
c62d2810 438 {
439 VRAMBuffer=vnapage[(tmp>>10)&0x3][tmp&0x3FF];
440 }
441
442 if (INC32) RefreshAddr+=32;
443 else RefreshAddr++;
444 if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
4fdfab07 445 dprintf("r [2007] %02x",ret);
c62d2810 446 return ret;
447}
448
449static DECLFW(B2000)
450{
4fdfab07 451 /* NMI2? */
e328100e 452 FakedLineUpdate();
c62d2810 453 PPUGenLatch=V;
454 PPU[0]=V;
455 TempAddr&=0xF3FF;
456 TempAddr|=(V&3)<<10;
457}
458
459static DECLFW(B2001)
460{
4fdfab07 461 /* merged */
e328100e 462 FakedLineUpdate();
c62d2810 463 PPUGenLatch=V;
464 PPU[1]=V;
465 if(V&0xE0)
466 deemp=V>>5;
467 //printf("$%04x:$%02x, %d\n",X.PC,V,scanline);
468}
469
470static DECLFW(B2002)
471{
4fdfab07 472 /* merged */
c62d2810 473 PPUGenLatch=V;
474}
475
476static DECLFW(B2003)
477{
4fdfab07 478 /* merged */
c62d2810 479 PPUGenLatch=V;
480 PPU[3]=V;
481 PPUSPL=V&0x7;
482}
483
484static DECLFW(B2004)
485{
4fdfab07 486 /* merged */
c62d2810 487 PPUGenLatch=V;
4fdfab07 488 if(PPUSPL>=8)
c62d2810 489 {
490 if(PPU[3]>=8)
491 SPRAM[PPU[3]]=V;
492 }
493 else
494 {
495 //printf("$%02x:$%02x\n",PPUSPL,V);
496 SPRAM[PPUSPL]=V;
c62d2810 497 }
498 PPU[3]++;
4fdfab07 499 PPUSPL++;
5232c20c 500
c62d2810 501}
502
503static DECLFW(B2005)
504{
4fdfab07 505 /* merged */
c62d2810 506 uint32 tmp=TempAddr;
e328100e 507 FakedLineUpdate();
c62d2810 508 PPUGenLatch=V;
509 if (!vtoggle)
510 {
511 tmp&=0xFFE0;
512 tmp|=V>>3;
513 XOffset=V&7;
514 }
515 else
516 {
517 tmp&=0x8C1F;
518 tmp|=((V&~0x7)<<2);
519 tmp|=(V&7)<<12;
520 }
521
522 TempAddr=tmp;
523 vtoggle^=1;
524}
525
526static DECLFW(B2006)
527{
4fdfab07 528 /* merged */
e328100e 529 FakedLineUpdate();
4fdfab07 530
c62d2810 531 PPUGenLatch=V;
532 if(!vtoggle)
533 {
534 TempAddr&=0x00FF;
535 TempAddr|=(V&0x3f)<<8;
536 }
537 else
538 {
539 TempAddr&=0xFF00;
540 TempAddr|=V;
c62d2810 541
4fdfab07 542 RefreshAddr=TempAddr;
c62d2810 543 if(PPU_hook)
544 PPU_hook(RefreshAddr);
545 }
546 vtoggle^=1;
547}
548
549static DECLFW(B2007)
15300263 550{
4fdfab07 551 /* merged */
c62d2810 552 uint32 tmp=RefreshAddr&0x3FFF;
c62d2810 553 PPUGenLatch=V;
554 if(tmp>=0x3F00)
555 {
4fdfab07 556 // hmmm....
557 if(!(tmp&0xf))
558 PALRAM[0x00]=PALRAM[0x04]=PALRAM[0x08]=PALRAM[0x0C]=V&0x3f;
559 else if(tmp&3) PALRAM[(tmp&0x1f)]=V&0x3f;
c62d2810 560 }
561 else if(tmp<0x2000)
562 {
563 if(PPUCHRRAM&(1<<(tmp>>10)))
564 VPage[tmp>>10][tmp]=V;
565 }
566 else
15300263 567 {
c62d2810 568 if(PPUNTARAM&(1<<((tmp&0xF00)>>10)))
569 vnapage[((tmp&0xF00)>>10)][tmp&0x3FF]=V;
570 }
571 if (INC32) RefreshAddr+=32;
572 else RefreshAddr++;
573 if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
574}
575
576static DECLFW(B4014)
15300263 577{
c62d2810 578 uint32 t=V<<8;
579 int x;
4fdfab07 580
c62d2810 581 for(x=0;x<256;x++)
582 B2004(0x2004,X.DB=ARead[t+x](t+x));
583 X6502_AddCycles(512);
584}
585
5232c20c 586void BGRender(uint8 *target)
c62d2810 587{
4a1bf31b 588 uint32 tem, vofs;
589 vofs=((PPU[0]&0x10)<<8) | ((RefreshAddr>>12)&7);
590
591 Pal[0]|=64;
592 Pal[4]|=64;
593 Pal[8]|=64;
594 Pal[0xC]|=64;
595 RefreshLine(target-XOffset, vofs);
596 Pal[0]&=63;
597 Pal[4]&=63;
598 Pal[8]&=63;
599 Pal[0xC]&=63;
600
c62d2810 601 if(!(PPU[1]&2))
602 {
9115e7d2 603 tem=Pal[0]|0x40;
604 tem|=tem<<8;
605 tem|=tem<<16;
c62d2810 606 *(uint32 *)target=*(uint32 *)(target+4)=tem;
607 }
608}
609
610#ifdef FRAMESKIP
5232c20c 611int FSkip=0;
c62d2810 612void FCEUI_FrameSkip(int x)
613{
614 FSkip=x;
615}
616#endif
617
618/* This is called at the beginning of each visible scanline */
e328100e 619static void LineUpdate(uint8 *target)
c62d2810 620{
621 uint32 tem;
c0623dcf 622 int y;
c62d2810 623
078eb4c0 624 /* PRefreshLine() will not get called on skipped frames. This
625 * could cause a problem, but the solution would be rather complex,
626 * due to the current sprite 0 hit code.
627 */
c0623dcf 628 if(FSkip)
629 {
630 y=(int)SPRAM[0] + 1;
631 if(scanline==y && SpriteON) PPU_status|=0x40; // hack
632 return;
633 }
078eb4c0 634
ea089273 635 if(!ScreenON)
636 {
637 tem=Pal[0]|0x40;
638 tem|=tem << 8;
639 tem|=tem << 16;
640 FCEU_dwmemset(target,tem,256);
641 }
642 else if(scanline < FSettings.FirstSLine || scanline > FSettings.LastSLine)
e328100e 643 {
644 if(PPU_hook)
645 PRefreshLine();
c0623dcf 646 y=(int)SPRAM[0] + 1;
647 if(scanline==y && SpriteON) PPU_status|=0x40;
e328100e 648 }
649 else
650 {
ea089273 651 BGRender(target);
15300263 652 }
e328100e 653
c62d2810 654 if(InputScanlineHook)
e328100e 655 InputScanlineHook(target,spork?sprlinebuf:0,linestartts,256);
656}
657
658
659static void LineUpdateEnd(uint8 *target)
660{
c8c88d89 661#ifdef __arm__
e328100e 662 if(ScreenON || SpriteON) // Yes, very el-cheapo.
663 {
664 if(PPU[1]&0x01)
665 block_and(target, 256, 0x30);
666 }
667 if((PPU[1]>>5)==0x7)
668 block_or(target, 256, 0xc0);
669 else if(PPU[1]&0xE0)
670 block_or(target, 256, 0x40);
671 else
672 block_andor(target, 256, 0x3f, 0x80);
673#else
674 int x;
675
676 if(ScreenON || SpriteON) // Yes, very el-cheapo.
677 {
678 if(PPU[1]&0x01)
679 {
680 for(x=63;x>=0;x--)
681 *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])&0x30303030;
682 }
683 }
684 if((PPU[1]>>5)==0x7)
685 {
686 for(x=63;x>=0;x--)
687 *(uint32 *)&target[x<<2]=((*(uint32*)&target[x<<2])&0x3f3f3f3f)|0xc0c0c0c0;
688 }
689 else if(PPU[1]&0xE0)
690 for(x=63;x>=0;x--)
691 *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])|0x40404040;
692 else
693 for(x=63;x>=0;x--)
694 *(uint32 *)&target[x<<2]=((*(uint32*)&target[x<<2])&0x3f3f3f3f)|0x80808080;
695#endif
696
697 // black borders
698 ((uint32 *)target)[-2]=((uint32 *)target)[-1]=0;
699 ((uint32 *)target)[64]=((uint32 *)target)[65]=0;
c62d2810 700}
701
702#define PAL(c) ((c)+cc)
703
704
705static void PRefreshLine(void)
706{
078eb4c0 707 uint32 vofs;
708 int X1;
709 vofs=((PPU[0]&0x10)<<8) | ((RefreshAddr>>12)&7);
710 void (*PPU_hook_)(uint32 A) = PPU_hook;
c62d2810 711
c62d2810 712
078eb4c0 713 for(X1=33;X1;X1--)
714 {
715 uint32 zz2;
716 uint32 vadr;
717
718 zz2=(RefreshAddr>>10)&3;
719 PPU_hook_(0x2000|(RefreshAddr&0xFFF));
720
721 vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
722
723 PPU_hook_(vadr);
c62d2810 724
c62d2810 725 if((RefreshAddr&0x1f)==0x1f)
726 RefreshAddr^=0x41F;
727 else
728 RefreshAddr++;
078eb4c0 729 }
c62d2810 730}
731
4a1bf31b 732/* This high-level graphics MMC5 emulation code was written
733 for MMC5 carts in "CL" mode. It's probably not totally
734 correct for carts in "SL" mode.
735 */
736static void RefreshLine_MMC5Hack1(uint8 *P, uint32 vofs)
c62d2810 737{
4a1bf31b 738 int8 tochange, X1;
c62d2810 739
740 tochange=MMC5HackSPMode&0x1F;
741
742 for(X1=33;X1;X1--,P+=8)
743 {
744 uint8 *C;
5232c20c 745 uint8 cc,zz,zz2;
c62d2810 746 uint32 vadr;
747
15300263 748 if((tochange<=0 && MMC5HackSPMode&0x40) ||
c62d2810 749 (tochange>0 && !(MMC5HackSPMode&0x40)))
750 {
751 uint8 xs,ys;
752
15300263 753 xs=33-X1;
c62d2810 754 ys=((scanline>>3)+MMC5HackSPScroll)&0x1F;
755 if(ys>=0x1E) ys-=0x1E;
756 vadr=(MMC5HackExNTARAMPtr[xs|(ys<<5)]<<4)+(vofs&7);
757
758 C = MMC5HackVROMPTR+vadr;
759 C += ((MMC5HackSPPage & 0x3f & MMC5HackVROMMask) << 12);
760
761 cc=MMC5HackExNTARAMPtr[0x3c0+(xs>>2)+((ys&0x1C)<<1)];
762 cc=((cc >> ((xs&2) + ((ys&0x2)<<1))) &3) <<2;
763 }
764 else
765 {
766 zz=RefreshAddr&0x1F;
767 zz2=(RefreshAddr>>10)&3;
768 vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
769 C = MMC5BGVRAMADR(vadr);
770 cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)];
771 cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2;
772 }
773 #include "fceline.h"
774
775 if((RefreshAddr&0x1f)==0x1f)
776 RefreshAddr^=0x41F;
777 else
778 RefreshAddr++;
779 tochange--;
780 }
4a1bf31b 781}
782
783static void RefreshLine_MMC5Hack2(uint8 *P, uint32 vofs)
784{
785 int8 tochange, X1;
c62d2810 786
787 tochange=MMC5HackSPMode&0x1F;
788
789 for(X1=33;X1;X1--,P+=8)
790 {
791 uint8 *C;
5232c20c 792 uint8 cc;
793 uint8 zz2;
c62d2810 794 uint32 vadr;
795
796 if((tochange<=0 && MMC5HackSPMode&0x40) ||
797 (tochange>0 && !(MMC5HackSPMode&0x40)))
798 {
799 uint8 xs,ys;
800
15300263 801 xs=33-X1;
c62d2810 802 ys=((scanline>>3)+MMC5HackSPScroll)&0x1F;
803 if(ys>=0x1E) ys-=0x1E;
804 vadr=(MMC5HackExNTARAMPtr[xs|(ys<<5)]<<4)+(vofs&7);
805
806 C = MMC5HackVROMPTR+vadr;
807 C += ((MMC5HackSPPage & 0x3f & MMC5HackVROMMask) << 12);
808
809 cc=MMC5HackExNTARAMPtr[0x3c0+(xs>>2)+((ys&0x1C)<<1)];
810 cc=((cc >> ((xs&2) + ((ys&0x2)<<1))) &3) <<2;
811 }
812 else
813 {
814 C=MMC5HackVROMPTR;
815 zz2=(RefreshAddr>>10)&3;
816 vadr = (vnapage[zz2][RefreshAddr & 0x3ff] << 4) + vofs;
817 C += (((MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff]) & 0x3f &
818 MMC5HackVROMMask) << 12) + (vadr & 0xfff);
819 vadr = (MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff] & 0xC0)>> 4;
820 cc = vadr;
821 }
822 #include "fceline.h"
823 if((RefreshAddr&0x1f)==0x1f)
824 RefreshAddr^=0x41F;
825 else
826 RefreshAddr++;
827 tochange--;
828 }
4a1bf31b 829}
830
831static void RefreshLine_MMC5Hack3(uint8 *P, uint32 vofs)
832{
833 int8 X1;
c62d2810 834
c62d2810 835 for(X1=33;X1;X1--,P+=8)
836 {
15300263 837 uint8 *C;
5232c20c 838 uint8 cc;
839 uint8 zz2;
15300263 840 uint32 vadr;
c62d2810 841
842 C=MMC5HackVROMPTR;
843 zz2=(RefreshAddr>>10)&3;
844 vadr = (vnapage[zz2][RefreshAddr & 0x3ff] << 4) + vofs;
15300263 845 C += (((MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff]) & 0x3f &
c62d2810 846 MMC5HackVROMMask) << 12) + (vadr & 0xfff);
847 vadr = (MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff] & 0xC0)>> 4;
848 cc = vadr;
849
850 #include "fceline.h"
851 if((RefreshAddr&0x1f)==0x1f)
852 RefreshAddr^=0x41F;
853 else
854 RefreshAddr++;
855 }
4a1bf31b 856}
857
858static void RefreshLine_MMC5Hack4(uint8 *P, uint32 vofs)
859{
860 int8 X1;
861
c62d2810 862 for(X1=33;X1;X1--,P+=8)
863 {
864 uint8 *C;
5232c20c 865 uint8 cc,zz,zz2;
c62d2810 866 uint32 vadr;
867
868 zz=RefreshAddr&0x1F;
869 zz2=(RefreshAddr>>10)&3;
870 vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
871 C = MMC5BGVRAMADR(vadr);
872 cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)];
873 cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2;
874
875 #include "fceline.h"
15300263 876
c62d2810 877 if((RefreshAddr&0x1f)==0x1f)
878 RefreshAddr^=0x41F;
879 else
880 RefreshAddr++;
15300263 881 }
4a1bf31b 882}
883
884static void RefreshLine_PPU_hook(uint8 *P, uint32 vofs)
885{
886 int8 X1;
078eb4c0 887 void (*PPU_hook_)(uint32 A) = PPU_hook;
888 uint32 rfraddr = RefreshAddr;
889 uint8 *page = vnapage[(rfraddr>>10)&3];
c62d2810 890
c62d2810 891 for(X1=33;X1;X1--,P+=8)
892 {
15300263 893 uint8 *C;
078eb4c0 894 uint8 cc,zz;
15300263 895 uint32 vadr;
c62d2810 896
078eb4c0 897 zz=rfraddr&0x1F;
898 PPU_hook_(0x2000|(rfraddr&0xFFF));
899 cc=page[0x3c0+(zz>>2)+((rfraddr&0x380)>>4)];
900 cc=((cc >> ((zz&2) + ((rfraddr&0x40)>>4))) &3) <<2;
901 vadr=(page[rfraddr&0x3ff]<<4)+vofs;
c62d2810 902 C = VRAMADR(vadr);
903
904 #include "fceline.h"
905
078eb4c0 906 PPU_hook_(vadr);
c62d2810 907
078eb4c0 908 if((rfraddr&0x1f)==0x1f) {
909 rfraddr^=0x41F;
910 page = vnapage[(rfraddr>>10)&3];
911 } else
912 rfraddr++;
c62d2810 913 }
078eb4c0 914 RefreshAddr = rfraddr;
4a1bf31b 915}
916
9115e7d2 917static void RefreshLine_normal(uint8 *P, uint32 vofs) // vofs is 0x107 max
4a1bf31b 918{
919 int8 X1;
9115e7d2 920 uint32 rfraddr = RefreshAddr;
921 uint8 *page = vnapage[(rfraddr>>10)&3];
922 uint32 cc2=0;
4a1bf31b 923
9115e7d2 924 if ((rfraddr&0xc)!=0)
925 cc2=*(uint32 *) (page + ((rfraddr&0x380)>>4) + ((rfraddr&0x10)>>2) + 0x3c0);
926
927 for (X1=33;X1;X1--,P+=8)
c62d2810 928 {
9115e7d2 929 uint8 cc,*C;
c62d2810 930 uint32 vadr;
931
9115e7d2 932 vadr=(page[rfraddr&0x3ff]<<4)+vofs;
c62d2810 933 C = VRAMADR(vadr);
9115e7d2 934 if ((rfraddr&0xc)==0)
935 cc2=*(uint32 *) (page + ((rfraddr&0x380)>>4) + ((rfraddr&0x10)>>2) + 0x3c0);
936 cc=((cc2 >> ((rfraddr&2) + ((rfraddr&0x40)>>4) + ((rfraddr&0xc)<<1))) & 3) << 2;
4a1bf31b 937
9115e7d2 938 #include "fceline.h"
15300263 939
9115e7d2 940 if((rfraddr&0x1f)==0x1f) {
941 rfraddr^=0x41F;
942 page = vnapage[(rfraddr>>10)&3];
943 } else
944 rfraddr++;
c62d2810 945 }
9115e7d2 946 RefreshAddr = rfraddr;
4a1bf31b 947}
c62d2810 948
4a1bf31b 949static void SetRefreshLine(void)
950{
951 if(MMC5Hack && geniestage!=1)
952 {
953 if(MMC5HackCHRMode==0 && (MMC5HackSPMode&0x80))
954 {
955 if (RefreshLine != RefreshLine_MMC5Hack1) printf("set refr RefreshLine_MMC5Hack1\n");
956 RefreshLine = RefreshLine_MMC5Hack1;
957 }
958 else if(MMC5HackCHRMode==1 && (MMC5HackSPMode&0x80))
959 {
960 if (RefreshLine != RefreshLine_MMC5Hack2) printf("set refr RefreshLine_MMC5Hack2\n");
961 RefreshLine = RefreshLine_MMC5Hack2;
962 }
963 else if(MMC5HackCHRMode==1)
964 {
965 if (RefreshLine != RefreshLine_MMC5Hack3) printf("set refr RefreshLine_MMC5Hack3\n");
966 RefreshLine = RefreshLine_MMC5Hack3;
967 }
968 else
969 {
970 if (RefreshLine != RefreshLine_MMC5Hack4) printf("set refr RefreshLine_MMC5Hack4\n");
971 RefreshLine = RefreshLine_MMC5Hack4;
972 }
973 } // End if(MMC5Hack)
974 else if(PPU_hook)
975 {
976 if (RefreshLine != RefreshLine_PPU_hook) printf("set refr RefreshLine_PPU_hook\n");
977 RefreshLine = RefreshLine_PPU_hook;
978 }
979 else
980 {
981 if (RefreshLine != RefreshLine_normal) printf("set refr RefreshLine_normal\n");
982 RefreshLine = RefreshLine_normal;
983 }
c62d2810 984}
985
4fdfab07 986static INLINE
937bf65b 987void Fixit2(void)
c62d2810 988{
989 if(ScreenON || SpriteON)
990 {
991 uint32 rad=RefreshAddr;
992 rad&=0xFBE0;
993 rad|=TempAddr&0x041f;
994 RefreshAddr=rad;
995 //PPU_hook(RefreshAddr,-1);
996 }
997}
998
4fdfab07 999static INLINE
937bf65b 1000void Fixit1(void)
c62d2810 1001{
1002 if(ScreenON || SpriteON)
1003 {
1004 uint32 rad=RefreshAddr;
1005
1006 if((rad&0x7000)==0x7000)
1007 {
1008 rad^=0x7000;
1009 if((rad&0x3E0)==0x3A0)
1010 {
1011 rad^=0x3A0;
1012 rad^=0x800;
1013 }
1014 else
1015 {
1016 if((rad&0x3E0)==0x3e0)
1017 rad^=0x3e0;
1018 else rad+=0x20;
1019 }
1020 }
1021 else
1022 rad+=0x1000;
1023 RefreshAddr=rad;
1024 //PPU_hook(RefreshAddr,-1);
1025 }
1026}
1027
937bf65b 1028
5232c20c 1029// ============================//
1030// end of new code
1031// ===========================//
c62d2810 1032
1033void ResetMapping(void)
1034{
1035 int x;
1036
1037 SetReadHandler(0x0000,0xFFFF,ANull);
1038 SetWriteHandler(0x0000,0xFFFF,BNull);
1039
1040 SetReadHandler(0,0x7FF,ARAML);
1041 SetWriteHandler(0,0x7FF,BRAML);
1042
1043 SetReadHandler(0x800,0x1FFF,ARAMH); /* Part of a little */
1044 SetWriteHandler(0x800,0x1FFF,BRAMH); /* hack for a small speed boost. */
1045
1046 for(x=0x2000;x<0x4000;x+=8)
1047 {
1048 ARead[x]=A200x;
1049 BWrite[x]=B2000;
1050 ARead[x+1]=A200x;
1051 BWrite[x+1]=B2001;
1052 ARead[x+2]=A2002;
1053 BWrite[x+2]=B2002;
1054 ARead[x+3]=A200x;
1055 BWrite[x+3]=B2003;
1056 ARead[x+4]=A200x;
1057 BWrite[x+4]=B2004;
1058 ARead[x+5]=A200x;
1059 BWrite[x+5]=B2005;
1060 ARead[x+6]=A200x;
1061 BWrite[x+6]=B2006;
1062 ARead[x+7]=A2007;
1063 BWrite[x+7]=B2007;
1064 }
1065
1066 BWrite[0x4014]=B4014;
1067 SetNESSoundMap();
1068 InitializeInput();
1069}
1070
1071int GameLoaded=0;
1072void CloseGame(void)
1073{
c4980f9e 1074 FCEUI_StopMovie();
c62d2810 1075 if(GameLoaded)
1076 {
1077 if(FCEUGameInfo.type!=GIT_NSF)
92764e62 1078 FCEU_FlushGameCheats(0,0);
c62d2810 1079 #ifdef NETWORK
1080 if(FSettings.NetworkPlay) KillNetplay();
15300263 1081 #endif
c4980f9e 1082 GameInterface(GI_CLOSE, 0);
c62d2810 1083 CloseGenie();
1084 GameLoaded=0;
1085 }
1086}
1087
1088void ResetGameLoaded(void)
1089{
1090 if(GameLoaded) CloseGame();
1091 GameStateRestore=0;
1092 PPU_hook=0;
d97315ac 1093 GameHBIRQHook=GameHBIRQHook2=0;
c62d2810 1094 GameExpSound.Fill=0;
1095 GameExpSound.RChange=0;
1096 if(GameExpSound.Kill)
1097 GameExpSound.Kill();
1098 GameExpSound.Kill=0;
1099 MapIRQHook=0;
1100 MMC5Hack=0;
1101 PAL&=1;
1102 pale=0;
1103
1104 FCEUGameInfo.name=0;
1105 FCEUGameInfo.type=GIT_CART;
1106 FCEUGameInfo.vidsys=GIV_USER;
1107 FCEUGameInfo.input[0]=FCEUGameInfo.input[1]=-1;
1108 FCEUGameInfo.inputfc=-1;
6244011f 1109
1110 FCEUGameInfo.soundchan=0;
1111 FCEUGameInfo.soundrate=0;
1112 FCEUGameInfo.cspecial=0;
c62d2810 1113}
1114
5a2aa426 1115char lastLoadedGameName [2048];
989672f4 1116int LoadGameLastError = 0;
d97315ac 1117int UNIFLoad(const char *name, int fp);
386f5371 1118int iNESLoad(const char *name, int fp, int OverwriteVidMode);
d97315ac 1119int FDSLoad(const char *name, int fp);
1120int NSFLoad(int fp);
5a2aa426 1121
c62d2810 1122FCEUGI *FCEUI_LoadGame(char *name)
1123{
5a2aa426 1124 char name2[512];
892b1f6c 1125 int have_movie = 0, have_ips = 0;
c62d2810 1126 int fp;
1127
b2b95d2e 1128 //Exit=1;
989672f4 1129 LoadGameLastError = 0;
c62d2810 1130 ResetGameLoaded();
1131
5a2aa426 1132 strncpy(name2, name, sizeof(name2));
1133 name2[sizeof(name2)-1] = 0;
1134
1135 fp=FCEU_fopen(name2,"rb");
c62d2810 1136 if(!fp)
1137 {
1138 FCEU_PrintError("Error opening \"%s\"!",name);
989672f4 1139 LoadGameLastError = 1;
c62d2810 1140 return 0;
1141 }
1142
5a2aa426 1143 {
1144 char *p = name2 + strlen(name2) - 4;
892b1f6c 1145 if (strcasecmp(p, ".fcm") == 0) printf("movie detected\n"), have_movie = 1;
1146 if (strcasecmp(p, ".ips") == 0) printf("ips detected\n"), have_ips = 1;
1147 if (have_movie || have_ips)
5a2aa426 1148 {
1149 // movie detected
5a2aa426 1150 FCEU_fclose(fp);
1151 *p = 0;
1152 fp=FCEU_fopen(name2,"rb");
892b1f6c 1153 if (!fp && p - name2 > 2)
1154 {
1155 for (p--; p > name2 && *p != '.'; p--);
1156 *p = 0;
1157 fp=FCEU_fopen(name2,"rb");
1158 }
5a2aa426 1159 if (!fp) {
892b1f6c 1160 printf("no ROM for ips/movie\n");
989672f4 1161 LoadGameLastError = 2;
5a2aa426 1162 return 0;
1163 }
5a2aa426 1164 }
1165 }
1166
892b1f6c 1167 // do IPS patch
1168 if (have_ips)
1169 {
1170 FCEU_fclose(fp);
1171 FILE *ips = fopen(name, "rb");
1172 if (!ips) return 0;
1173 fp=FCEU_fopen_forcemem(name2);
1174 if (!fp) { fclose(ips); return 0; }
1175 ApplyIPS(ips, fp); // closes ips
1176 }
1177
5a2aa426 1178 GetFileBase(name2);
386f5371 1179 if(iNESLoad(name2,fp,1))
c62d2810 1180 goto endlseq;
1181 if(NSFLoad(fp))
1182 goto endlseq;
5a2aa426 1183 if(FDSLoad(name2,fp))
c62d2810 1184 goto endlseq;
5a2aa426 1185 if(UNIFLoad(name2,fp))
c62d2810 1186 goto endlseq;
1187
1188 FCEU_PrintError("An error occurred while loading the file.");
1189 FCEU_fclose(fp);
989672f4 1190 // format handlers may set LoadGameLastError themselves.
1191 if (LoadGameLastError == 0) LoadGameLastError = 3;
c62d2810 1192 return 0;
1193
1194 endlseq:
1195 FCEU_fclose(fp);
15300263 1196 GameLoaded=1;
c62d2810 1197
1198 FCEU_ResetVidSys();
1199 if(FCEUGameInfo.type!=GIT_NSF)
1200 if(FSettings.GameGenie)
1201 OpenGenie();
1202
1203 PowerNES();
1204 #ifdef NETWORK
1205 if(FSettings.NetworkPlay) InitNetplay();
1206 #endif
1207 SaveStateRefresh();
1208 if(FCEUGameInfo.type!=GIT_NSF)
1209 {
92764e62 1210 FCEU_LoadGamePalette();
1211 FCEU_LoadGameCheats(0);
c62d2810 1212 }
15300263 1213
c62d2810 1214 FCEU_ResetPalette();
1215 Exit=0;
5a2aa426 1216
1217 if (have_movie)
1218 FCEUI_LoadMovie(name, 1);
989672f4 1219
1220 strcpy(lastLoadedGameName, name2);
1221
c62d2810 1222 return(&FCEUGameInfo);
1223}
1224
1225
1226void FCEU_ResetVidSys(void)
1227{
1228 int w;
1229
1230 if(FCEUGameInfo.vidsys==GIV_NTSC)
1231 w=0;
1232 else if(FCEUGameInfo.vidsys==GIV_PAL)
1233 w=1;
1234 else
1235 w=FSettings.PAL;
1236
1237 if(w)
1238 {
1239 PAL=1;
c62d2810 1240 FSettings.FirstSLine=FSettings.UsrFirstSLine[1];
1241 FSettings.LastSLine=FSettings.UsrLastSLine[1];
1242 }
1243 else
1244 {
1245 PAL=0;
c62d2810 1246 FSettings.FirstSLine=FSettings.UsrFirstSLine[0];
1247 FSettings.LastSLine=FSettings.UsrLastSLine[0];
1248 }
0b65fdb3 1249 printf("ResetVidSys: PAL = %i\n", PAL);
c62d2810 1250 SetSoundVariables();
1251}
1252
1253int FCEUI_Initialize(void)
1254{
1255 if(!InitVirtualVideo())
1256 return 0;
1257 memset(&FSettings,0,sizeof(FSettings));
1258 FSettings.UsrFirstSLine[0]=8;
1259 FSettings.UsrFirstSLine[1]=0;
1260 FSettings.UsrLastSLine[0]=FSettings.UsrLastSLine[1]=239;
92764e62 1261 FSettings.SoundVolume=100;
6244011f 1262
1263 FCEUI_Initialize098();
1264 FCEUI_SetEmuMode(0);
1265
c62d2810 1266 return 1;
1267}
1268
6244011f 1269void FCEUI_Kill(void)
1270{
1271 FCEU_KillGenie();
1272}
1273
1274static void EmLoop(void);
1275
a384bf44 1276int use098code = 0;
6244011f 1277void (*ResetNES)(void) = 0;
6244011f 1278void (*FCEUI_Emulate)(void) = 0;
1279
1280void FCEUI_SetEmuMode(int is_new)
1281{
a384bf44 1282 use098code = is_new;
6244011f 1283 if (is_new)
1284 {
1285 ResetNES=ResetNES098;
6244011f 1286 FCEUI_Emulate=FCEUI_Emulate098;
1287 }
1288 else
1289 {
1290 ResetNES=ResetNES081;
6244011f 1291 FCEUI_Emulate=EmLoop;
1292 }
1293}
1294
ea80a45b 1295void MMC5_hb(int); /* Ugh ugh ugh. */
e328100e 1296static void DoLine(void)
c62d2810 1297{
e328100e 1298 uint8 *target=XBuf+scanline*320+32;
1299
1300 LineUpdate(target);
c62d2810 1301
ea80a45b 1302 if(MMC5Hack && (ScreenON || SpriteON)) MMC5_hb(scanline);
1303
e328100e 1304 X6502_Run(256);
1305
f12b1f31 1306 // check: Battletoads & Double Dragon, Addams Family
1307 // sky glitches in SMB1 if done wrong
e328100e 1308 FakedLineUpdate();
1309
1310#ifdef FRAMESKIP
1311 if(!FSkip)
1312#endif
21afaa36 1313 if(scanline>=FSettings.FirstSLine && scanline<=FSettings.LastSLine)
1314 {
1315 if(SpriteON && spork)
1316 CopySprites(target);
e328100e 1317
21afaa36 1318 LineUpdateEnd(target);
1319 }
e328100e 1320 sphitx=0x100;
1321
1322 if(ScreenON || SpriteON)
1323 FetchSpriteData();
1324
1325 // DoHBlank();
1326 if(GameHBIRQHook && (ScreenON || SpriteON) && ((PPU[0]&0x38)!=0x18))
15300263 1327 {
e328100e 1328 X6502_Run(6);
1329 Fixit2();
1330 X6502_Run(4);
1331 GameHBIRQHook();
1332 X6502_Run(85-10-16);
c62d2810 1333 }
1334 else
1335 {
e328100e 1336 X6502_Run(6); // Tried 65, caused problems with Slalom(maybe others)
1337 Fixit2();
1338 X6502_Run(85-6-16);
c62d2810 1339 }
e328100e 1340
1341 if(SpriteON)
1342 RefreshSprites();
1343 if(GameHBIRQHook2 && (ScreenON || SpriteON))
1344 GameHBIRQHook2();
1345 scanline++;
1346 if (scanline<240)
1347 ResetRL(XBuf+scanline*320+32);
1348 X6502_Run(16);
c62d2810 1349}
c62d2810 1350
e328100e 1351
6244011f 1352static void EmLoop(void)
c62d2810 1353{
1354 for(;;)
1355 {
ea80a45b 1356 int x;
92e249b1 1357 uint32 scanlines_per_frame = PAL ? 312 : 262;
4fdfab07 1358 UpdateInput();
92764e62 1359 FCEU_ApplyPeriodicCheats();
4fdfab07 1360
1361 // FCEUPPU_Loop:
1362 if(ppudead) /* Needed for Knight Rider, possibly others. */
1363 {
6587f346 1364 //memset(XBuf, 0, 320*240);
a384bf44 1365 //X6502_Run(scanlines_per_frame*(256+85));
1366 int lines;
1367 for (lines=scanlines_per_frame;lines;lines--)
1368 X6502_Run(256+85);
4fdfab07 1369 ppudead--;
1370 goto update;
1371 }
ea80a45b 1372
c62d2810 1373 X6502_Run(256+85);
1374
1375 PPU[2]|=0x80;
1376 PPU[3]=PPUSPL=0; /* Not sure if this is correct. According
1377 to Matt Conte and my own tests, it is. Timing is probably
1378 off, though. NOTE: Not having this here
1379 breaks a Super Donkey Kong game. */
1380
1381 X6502_Run(12); /* I need to figure out the true nature and length
15300263 1382 of this delay.
c62d2810 1383 */
1384 if(FCEUGameInfo.type==GIT_NSF)
ea80a45b 1385 DoNSFFrame();
c62d2810 1386 else if(VBlankON)
1387 TriggerNMI();
1388
655f8df0 1389 // Note: this is needed for asm core
1390 // Warning: using 'scanline' var here breaks Castlevania III
1391 {
1392 int lines;
1393 X6502_Run(256+85-12);
1394 for (lines=scanlines_per_frame-242-1;lines;lines--)
1395 X6502_Run(256+85);
1396 }
1397 // X6502_Run((scanlines_per_frame-242)*(256+85)-12);
c62d2810 1398 PPU_status&=0x1f;
c62d2810 1399 X6502_Run(256);
ea80a45b 1400
c62d2810 1401 {
c62d2810 1402 if(ScreenON || SpriteON)
d97315ac 1403 {
c62d2810 1404 if(GameHBIRQHook)
1405 GameHBIRQHook();
ea80a45b 1406 if(PPU_hook)
1407 for(x=0;x<42;x++) {PPU_hook(0x2000); PPU_hook(0);} // ugh
d97315ac 1408 if(GameHBIRQHook2)
1409 GameHBIRQHook2();
1410 }
c62d2810 1411
4fdfab07 1412 X6502_Run(85-16);
c62d2810 1413
4fdfab07 1414 if(ScreenON || SpriteON)
1415 {
1416 RefreshAddr=TempAddr;
1417 if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
1418 }
e328100e 1419 spork=0;
1420 ResetRL(XBuf+32);
4fdfab07 1421
1422 X6502_Run(16-kook);
1423 kook ^= 1;
c62d2810 1424 }
4fdfab07 1425
c62d2810 1426 if(FCEUGameInfo.type==GIT_NSF)
937bf65b 1427 {
6587f346 1428 // run scanlines for asm core to fuction
13624c8f 1429 for(scanline=0;scanline<240;scanline++)
1430 X6502_Run(256+85);
937bf65b 1431 }
c62d2810 1432 else
1433 {
1434 int x,max,maxref;
1435
1436 deemp=PPU[1]>>5;
4a1bf31b 1437 SetRefreshLine();
4fdfab07 1438 for(scanline=0;scanline<240;) // scanline is incremented in DoLine. Evil. :/
c62d2810 1439 {
1440 deempcnt[deemp]++;
e328100e 1441 DoLine();
c62d2810 1442 }
ea80a45b 1443 if(MMC5Hack && (ScreenON || SpriteON)) MMC5_hb(scanline);
c62d2810 1444 for(x=1,max=0,maxref=0;x<7;x++)
1445 {
1446 if(deempcnt[x]>max)
1447 {
1448 max=deempcnt[x];
1449 maxref=x;
1450 }
1451 deempcnt[x]=0;
1452 }
c62d2810 1453 SetNESDeemph(maxref,0);
1454 }
1455
4fdfab07 1456update:
47d0839e 1457 if(Exit)
1458 {
1459 //CloseGame();
1460 break;
1461 }
1462
c62d2810 1463 {
1464 int ssize;
1465
1466 ssize=FlushEmulateSound();
1467
4fdfab07 1468 timestampbase += timestamp;
1469 timestamp = 0;
1470
c62d2810 1471 #ifdef FRAMESKIP
1472 if(FSkip)
1473 {
1474 FCEU_PutImageDummy();
1475 FSkip--;
5232c20c 1476 FCEUD_Update(0,WaveFinalMono,ssize);
c62d2810 1477 }
1478 else
1479 #endif
1480 {
1481 FCEU_PutImage();
5232c20c 1482 FCEUD_Update(XBuf+8,WaveFinalMono,ssize);
c62d2810 1483 }
c62d2810 1484 }
1485
4fdfab07 1486 } // for
c62d2810 1487}
1488
c62d2810 1489void FCEUI_CloseGame(void)
1490{
1491 Exit=1;
1492}
1493
1494static void ResetPPU(void)
1495{
1496 VRAMBuffer=PPU[0]=PPU[1]=PPU[2]=PPU[3]=0;
1497 PPUSPL=0;
1498 PPUGenLatch=0;
1499 RefreshAddr=TempAddr=0;
1500 vtoggle = 0;
4fdfab07 1501 ppudead = 2;
1502 kook = 0;
c62d2810 1503}
1504
1505static void PowerPPU(void)
1506{
1507 memset(NTARAM,0x00,0x800);
1508 memset(PALRAM,0x00,0x20);
1509 memset(SPRAM,0x00,0x100);
1510 ResetPPU();
1511}
1512
6244011f 1513void ResetNES081(void)
c62d2810 1514{
92764e62 1515 if(!GameLoaded) return;
c4980f9e 1516 GameInterface(GI_RESETM2, 0);
c62d2810 1517 ResetSound();
1518 ResetPPU();
1519 X6502_Reset();
1520}
1521
386f5371 1522void FCEU_MemoryRand(uint8 *ptr, uint32 size)
b8da43fb 1523{
386f5371 1524#ifndef DEBUG_ASM_6502
b8da43fb 1525 int x=0;
1526 while(size)
1527 {
1528 *ptr=(x&4)?0xFF:0x00;
1529 x++;
1530 size--;
1531 ptr++;
1532 }
cd9a6b51 1533#endif
386f5371 1534}
b8da43fb 1535
642070a9 1536void PowerNES(void)
c62d2810 1537{
1538 if(!GameLoaded) return;
1539
1540 FCEU_CheatResetRAM();
1541 FCEU_CheatAddRAM(2,0,RAM);
1542
1543 GeniePower();
1544
b8da43fb 1545 FCEU_MemoryRand(RAM,0x800);
386f5371 1546#ifdef DEBUG_ASM_6502
c62d2810 1547 memset(RAM,0x00,0x800);
282becab 1548 memset(nes_internal_ram,0x00,0x800);
b8da43fb 1549#endif
c62d2810 1550 ResetMapping();
c62d2810 1551 PowerSound();
1552 PowerPPU();
642070a9 1553
1554 if (use098code)
1555 FCEUPPU_Power();
1556
1557 /* Have the external game hardware "powered" after the internal NES stuff.
1558 Needed for the NSF code and VS System code.
1559 */
0bb3fe12 1560 GameInterface(GI_POWER, 0);
15d2d258 1561 if(FCEUGameInfo.type==GIT_VSUNI)
1562 FCEU_VSUniPower();
b8da43fb 1563#ifdef ASM_6502
1564 if (geniestage)
1565 GenieSetPages(0);
1566#endif
15d2d258 1567 timestampbase=0;
c62d2810 1568 X6502_Power();
15d2d258 1569 FCEU_PowerCheats();
c62d2810 1570}
1571
890e37ba 1572
1573/* savestate stuff */
1574uint16 TempAddrT,RefreshAddrT;
1575
1576SFORMAT FCEUPPU_STATEINFO[]={
1577 { NTARAM, 0x800, "NTAR"},
1578 { PALRAM, 0x20, "PRAM"},
1579 { SPRAM, 0x100, "SPRA"},
1580 { PPU, 0x4, "PPUR"},
1581 { &XOffset, 1, "XOFF"},
1582 { &vtoggle, 1, "VTOG"},
1583 { &RefreshAddrT, 2|RLSB, "RADD"},
1584 { &TempAddrT, 2|RLSB, "TADD"},
1585 { &VRAMBuffer, 1, "VBUF"},
1586 { &PPUGenLatch, 1, "PGEN"},
1587 // from 0.98.15
1588 { &kook, 1, "KOOK"},
1589 { &ppudead, 1, "DEAD"},
1590 { &PPUSPL, 1, "PSPL"},
1591 { 0 }
1592 };
1593
1594
ARM optimized FCE Ultra port