aboutsummaryrefslogtreecommitdiff
path: root/source/getset.h
blob: 511634d5637e62a3bf80174a31be17cc4c7dff7e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
/*******************************************************************************
  Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
 
  (c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com) and
                            Jerremy Koot (jkoot@snes9x.com)

  (c) Copyright 2001 - 2004 John Weidman (jweidman@slip.net)

  (c) Copyright 2002 - 2004 Brad Jorsch (anomie@users.sourceforge.net),
                            funkyass (funkyass@spam.shaw.ca),
                            Joel Yliluoma (http://iki.fi/bisqwit/)
                            Kris Bleakley (codeviolation@hotmail.com),
                            Matthew Kendora,
                            Nach (n-a-c-h@users.sourceforge.net),
                            Peter Bortas (peter@bortas.org) and
                            zones (kasumitokoduck@yahoo.com)

  C4 x86 assembler and some C emulation code
  (c) Copyright 2000 - 2003 zsKnight (zsknight@zsnes.com),
                            _Demo_ (_demo_@zsnes.com), and Nach

  C4 C++ code
  (c) Copyright 2003 Brad Jorsch

  DSP-1 emulator code
  (c) Copyright 1998 - 2004 Ivar (ivar@snes9x.com), _Demo_, Gary Henderson,
                            John Weidman, neviksti (neviksti@hotmail.com),
                            Kris Bleakley, Andreas Naive

  DSP-2 emulator code
  (c) Copyright 2003 Kris Bleakley, John Weidman, neviksti, Matthew Kendora, and
                     Lord Nightmare (lord_nightmare@users.sourceforge.net

  OBC1 emulator code
  (c) Copyright 2001 - 2004 zsKnight, pagefault (pagefault@zsnes.com) and
                            Kris Bleakley
  Ported from x86 assembler to C by sanmaiwashi

  SPC7110 and RTC C++ emulator code
  (c) Copyright 2002 Matthew Kendora with research by
                     zsKnight, John Weidman, and Dark Force

  S-DD1 C emulator code
  (c) Copyright 2003 Brad Jorsch with research by
                     Andreas Naive and John Weidman
 
  S-RTC C emulator code
  (c) Copyright 2001 John Weidman
  
  ST010 C++ emulator code
  (c) Copyright 2003 Feather, Kris Bleakley, John Weidman and Matthew Kendora

  Super FX x86 assembler emulator code 
  (c) Copyright 1998 - 2003 zsKnight, _Demo_, and pagefault 

  Super FX C emulator code 
  (c) Copyright 1997 - 1999 Ivar, Gary Henderson and John Weidman


  SH assembler code partly based on x86 assembler code
  (c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se) 

 
  Specific ports contains the works of other authors. See headers in
  individual files.
 
  Snes9x homepage: http://www.snes9x.com
 
  Permission to use, copy, modify and distribute Snes9x in both binary and
  source form, for non-commercial purposes, is hereby granted without fee,
  providing that this license information and copyright notice appear with
  all copies and any derived work.
 
  This software is provided 'as-is', without any express or implied
  warranty. In no event shall the authors be held liable for any damages
  arising from the use of this software.
 
  Snes9x is freeware for PERSONAL USE only. Commercial users should
  seek permission of the copyright holders first. Commercial use includes
  charging money for Snes9x or software derived from Snes9x.
 
  The copyright holders request that bug fixes and improvements to the code
  should be forwarded to them so everyone can benefit from the modifications
  in future versions.
 
  Super NES and Super Nintendo Entertainment System are trademarks of
  Nintendo Co., Limited and its subsidiary companies.
*******************************************************************************/

#ifndef _GETSET_H_
#define _GETSET_H_

#include "ppu.h"
#include "dsp1.h"
#include "cpuexec.h"
#include "sa1.h"
#include "spc7110.h"
#include "obc1.h"
#include "seta.h"

extern uint8 OpenBus;

uint8 S9xGetByte (uint32 Address)
{
    int block;
    uint8 *GetAddress = Memory.Map [block = (Address >> MEMMAP_SHIFT) & MEMMAP_MASK];

	if(!CPU.InDMA)
		CPU.Cycles += Memory.MemorySpeed [block];

    if (GetAddress >= (uint8 *) MAP_LAST)
    {
#ifdef CPU_SHUTDOWN
		if (Memory.BlockIsRAM [block])
			CPU.WaitAddress = CPU.PCAtOpcodeStart;
#endif
		return (*(GetAddress + (Address & 0xffff)));
    }
	
    switch ((intptr_t) GetAddress)
    {
    case MAP_PPU:
		return (S9xGetPPU (Address & 0xffff));
    case MAP_CPU:
		return (S9xGetCPU (Address & 0xffff));
    case MAP_DSP:
#ifdef DSP_DUMMY_LOOPS
		printf("Get DSP Byte @ %06X\n", Address);
#endif
		return (S9xGetDSP (Address & 0xffff));
    case MAP_SA1RAM:
    case MAP_LOROM_SRAM:
		//Address &0x7FFF -offset into bank
		//Address&0xFF0000 -bank
		//bank>>1 | offset = s-ram address, unbound
		//unbound & SRAMMask = Sram offset
		return (*(Memory.SRAM + ((((Address&0xFF0000)>>1) |(Address&0x7FFF)) &Memory.SRAMMask)));
//		return (*(Memory.SRAM + ((Address & Memory.SRAMMask))));
		
	case MAP_RONLY_SRAM:
    case MAP_HIROM_SRAM:
		return (*(Memory.SRAM + (((Address & 0x7fff) - 0x6000 +
			((Address & 0xf0000) >> 3)) & Memory.SRAMMask)));
		
    case MAP_BWRAM:
		return (*(Memory.BWRAM + ((Address & 0x7fff) - 0x6000)));
		
    case MAP_C4:
		return (S9xGetC4 (Address & 0xffff));
		
	case MAP_SPC7110_ROM:
		return S9xGetSPC7110Byte(Address);

	case MAP_SPC7110_DRAM:
		return S9xGetSPC7110(0x4800);

	case MAP_OBC_RAM:
		return GetOBC1(Address & 0xffff);

	case MAP_SETA_DSP:
		return S9xGetSetaDSP(Address);
	
	case MAP_SETA_RISC:
		return S9xGetST018(Address);


 
   case MAP_DEBUG:
		return OpenBus;


	default:
    case MAP_NONE:
#ifdef MK_TRACE_BAD_READS
		char address[20];
		sprintf(address, TEXT("%06X"),Address);
		MessageBox(GUI.hWnd, address, TEXT("GetByte"), MB_OK);
#endif

		return OpenBus;
    }
}

uint16 S9xGetWord (uint32 Address)
{
    if ((Address & 0x0fff) == 0x0fff)
    {
		OpenBus = S9xGetByte (Address);
		return (OpenBus | (S9xGetByte (Address + 1) << 8));
    }
    int block;
    uint8 *GetAddress = Memory.Map [block = (Address >> MEMMAP_SHIFT) & MEMMAP_MASK];

	if(!CPU.InDMA)
		CPU.Cycles += (Memory.MemorySpeed [block]<<1);

 
	if (GetAddress >= (uint8 *) MAP_LAST)
    {
#ifdef CPU_SHUTDOWN
		if (Memory.BlockIsRAM [block])
			CPU.WaitAddress = CPU.PCAtOpcodeStart;
#endif
#ifdef FAST_LSB_WORD_ACCESS
		return (*(uint16 *) (GetAddress + (Address & 0xffff)));
#else
		return (*(GetAddress + (Address & 0xffff)) |
			(*(GetAddress + (Address & 0xffff) + 1) << 8));
#endif	
    }

    switch ((intptr_t) GetAddress)
    {
    case MAP_PPU:
		return (S9xGetPPU (Address & 0xffff) |
			(S9xGetPPU ((Address + 1) & 0xffff) << 8));
    case MAP_CPU:
		return (S9xGetCPU (Address & 0xffff) |
			(S9xGetCPU ((Address + 1) & 0xffff) << 8));
    case MAP_DSP:
#ifdef DSP_DUMMY_LOOPS
		printf("Get DSP Word @ %06X\n", Address);
#endif
		return (S9xGetDSP (Address & 0xffff) |
			(S9xGetDSP ((Address + 1) & 0xffff) << 8));
    case MAP_SA1RAM:
    case MAP_LOROM_SRAM:
		//Address &0x7FFF -offset into bank
		//Address&0xFF0000 -bank
		//bank>>1 | offset = s-ram address, unbound
		//unbound & SRAMMask = Sram offset
		/* BJ: no FAST_LSB_WORD_ACCESS here, since if Memory.SRAMMask=0x7ff
		 * then the high byte doesn't follow the low byte. */
		return 
			(*(Memory.SRAM + ((((Address&0xFF0000)>>1) |(Address&0x7FFF)) &Memory.SRAMMask)))|
			((*(Memory.SRAM + (((((Address+1)&0xFF0000)>>1) |((Address+1)&0x7FFF)) &Memory.SRAMMask)))<<8);

		//return (*(uint16*)(Memory.SRAM + ((((Address&0xFF0000)>>1)|(Address&0x7FFF)) & Memory.SRAMMask));// |
	//		(*(Memory.SRAM + ((Address + 1) & Memory.SRAMMask)) << 8));
		
	case MAP_RONLY_SRAM:
    case MAP_HIROM_SRAM:
		/* BJ: no FAST_LSB_WORD_ACCESS here, since if Memory.SRAMMask=0x7ff
		 * then the high byte doesn't follow the low byte. */
		return (*(Memory.SRAM +
			(((Address & 0x7fff) - 0x6000 +
			((Address & 0xf0000) >> 3)) & Memory.SRAMMask)) |
			(*(Memory.SRAM +
			((((Address + 1) & 0x7fff) - 0x6000 +
			(((Address + 1) & 0xf0000) >> 3)) & Memory.SRAMMask)) << 8));
		
    case MAP_BWRAM:
#ifdef FAST_LSB_WORD_ACCESS
		return (*(uint16 *) (Memory.BWRAM + ((Address & 0x7fff) - 0x6000)));
#else
		return (*(Memory.BWRAM + ((Address & 0x7fff) - 0x6000)) |
			(*(Memory.BWRAM + (((Address + 1) & 0x7fff) - 0x6000)) << 8));
#endif
		
    case MAP_C4:
		return (S9xGetC4 (Address & 0xffff) |
			(S9xGetC4 ((Address + 1) & 0xffff) << 8));
	
	case MAP_SPC7110_ROM:
	return (S9xGetSPC7110Byte(Address)|
			(S9xGetSPC7110Byte (Address+1))<<8);	
	case MAP_SPC7110_DRAM:
		return (S9xGetSPC7110(0x4800)|
			(S9xGetSPC7110 (0x4800) << 8));
	case MAP_OBC_RAM:
		return GetOBC1(Address&0xFFFF)| (GetOBC1((Address+1)&0xFFFF)<<8);

	case MAP_SETA_DSP:
		return S9xGetSetaDSP(Address)| (S9xGetSetaDSP((Address+1))<<8);
	
	case MAP_SETA_RISC:
		return S9xGetST018(Address)| (S9xGetST018((Address+1))<<8);

     case MAP_DEBUG:
		return (OpenBus | (OpenBus<<8));

    default:
    case MAP_NONE:
#ifdef MK_TRACE_BAD_READS
		char address[20];
		sprintf(address, TEXT("%06X"),Address);
		MessageBox(GUI.hWnd, address, TEXT("GetWord"), MB_OK);
#endif

		return (OpenBus | (OpenBus<<8));
    }
}

void S9xSetByte (uint8 Byte, uint32 Address)
{
#if defined(CPU_SHUTDOWN)
    CPU.WaitAddress = NULL;
#endif
    int block;
    uint8 *SetAddress = Memory.WriteMap [block = ((Address >> MEMMAP_SHIFT) & MEMMAP_MASK)];

	if (!CPU.InDMA)
		CPU.Cycles += Memory.MemorySpeed [block];

	
    if (SetAddress >= (uint8 *) MAP_LAST)
    {
#ifdef CPU_SHUTDOWN
		SetAddress += Address & 0xffff;
		if (SetAddress == SA1.WaitByteAddress1 ||
			SetAddress == SA1.WaitByteAddress2)
		{
			SA1.Executing = SA1.S9xOpcodes != NULL;
			SA1.WaitCounter = 0;
		}
		*SetAddress = Byte;
#else
		*(SetAddress + (Address & 0xffff)) = Byte;
#endif
		return;
    }
	
    switch ((intptr_t) SetAddress)
    {
    case MAP_PPU:
		S9xSetPPU (Byte, Address & 0xffff);
		return;
		
    case MAP_CPU:
		S9xSetCPU (Byte, Address & 0xffff);
		return;
		
    case MAP_DSP:
#ifdef DSP_DUMMY_LOOPS
		printf("DSP Byte: %02X to %06X\n", Byte, Address);
#endif
		S9xSetDSP (Byte, Address & 0xffff);
		return;
		
    case MAP_LOROM_SRAM:
		if (Memory.SRAMMask)
		{
			*(Memory.SRAM + ((((Address&0xFF0000)>>1)|(Address&0x7FFF))& Memory.SRAMMask))=Byte;
//			*(Memory.SRAM + (Address & Memory.SRAMMask)) = Byte;
			CPU.SRAMModified = TRUE;
		}
		return;
		
    case MAP_HIROM_SRAM:
		if (Memory.SRAMMask)
		{
			*(Memory.SRAM + (((Address & 0x7fff) - 0x6000 +
				((Address & 0xf0000) >> 3)) & Memory.SRAMMask)) = Byte;
			CPU.SRAMModified = TRUE;
		}
		return;
		
    case MAP_BWRAM:
		*(Memory.BWRAM + ((Address & 0x7fff) - 0x6000)) = Byte;
		CPU.SRAMModified = TRUE;
		return;
		
    case MAP_DEBUG:
		
    case MAP_SA1RAM:
		*(Memory.SRAM + (Address & 0xffff)) = Byte;
		SA1.Executing = !SA1.Waiting;
		break;
		
    case MAP_C4:
		S9xSetC4 (Byte, Address & 0xffff);
		return;
	
	case MAP_SPC7110_DRAM:
		s7r.bank50[(Address & 0xffff)]= (uint8) Byte;
		break;
	
	case MAP_OBC_RAM:
		SetOBC1(Byte, Address &0xFFFF);
		return;
	
	case MAP_SETA_DSP:
		S9xSetSetaDSP(Byte,Address);
		return;
	
	case MAP_SETA_RISC:
		S9xSetST018(Byte,Address);
		return;
    default:
    case MAP_NONE:
#ifdef MK_TRACE_BAD_WRITES
		char address[20];
		sprintf(address, TEXT("%06X"),Address);
		MessageBox(GUI.hWnd, address, TEXT("SetByte"), MB_OK);
#endif

		return;
    }
}

void S9xSetWord (uint16 Word, uint32 Address)
{
	if((Address & 0x0FFF)==0x0FFF)
	{
		S9xSetByte(Word&0x00FF, Address);
		S9xSetByte(Word>>8, Address+1);
		return;
	}

#if defined(CPU_SHUTDOWN)
    CPU.WaitAddress = NULL;
#endif
    int block;
    uint8 *SetAddress = Memory.WriteMap [block = ((Address >> MEMMAP_SHIFT) & MEMMAP_MASK)];

	if (!CPU.InDMA)
		CPU.Cycles += Memory.MemorySpeed [block] << 1;


    if (SetAddress >= (uint8 *) MAP_LAST)
    {
#ifdef CPU_SHUTDOWN
		SetAddress += Address & 0xffff;
		if (SetAddress == SA1.WaitByteAddress1 ||
			SetAddress == SA1.WaitByteAddress2)
		{
			SA1.Executing = SA1.S9xOpcodes != NULL;
			SA1.WaitCounter = 0;
		}
#ifdef FAST_LSB_WORD_ACCESS
		*(uint16 *) SetAddress = Word;
#else
		*SetAddress = (uint8) Word;
		*(SetAddress + 1) = Word >> 8;
#endif
#else
#ifdef FAST_LSB_WORD_ACCESS
		*(uint16 *) (SetAddress + (Address & 0xffff)) = Word;
#else
		*(SetAddress + (Address & 0xffff)) = (uint8) Word;
		*(SetAddress + ((Address + 1) & 0xffff)) = Word >> 8;
#endif
#endif
		return;
    }
	
    switch ((intptr_t) SetAddress)
    {
    case MAP_PPU:
		S9xSetPPU ((uint8) Word, Address & 0xffff);
		S9xSetPPU (Word >> 8, (Address & 0xffff) + 1);
		return;
		
    case MAP_CPU:
		S9xSetCPU ((uint8) Word, (Address & 0xffff));
		S9xSetCPU (Word >> 8, (Address & 0xffff) + 1);
		return;
		
    case MAP_DSP:
#ifdef DSP_DUMMY_LOOPS
		printf("DSP Word: %04X to %06X\n", Word, Address);
#endif
		S9xSetDSP ((uint8) Word, (Address & 0xffff));
		S9xSetDSP (Word >> 8, (Address & 0xffff) + 1);
		return;
		
    case MAP_LOROM_SRAM:
		if (Memory.SRAMMask)
		{
			/* BJ: no FAST_LSB_WORD_ACCESS here, since if Memory.SRAMMask=0x7ff
			 * then the high byte doesn't follow the low byte. */
			*(Memory.SRAM + ((((Address&0xFF0000)>>1)|(Address&0x7FFF))& Memory.SRAMMask)) = (uint8) Word;
			*(Memory.SRAM + (((((Address+1)&0xFF0000)>>1)|((Address+1)&0x7FFF))& Memory.SRAMMask)) = Word >> 8;

//			*(Memory.SRAM + (Address & Memory.SRAMMask)) = (uint8) Word;
//			*(Memory.SRAM + ((Address + 1) & Memory.SRAMMask)) = Word >> 8;
			CPU.SRAMModified = TRUE;
		}
		return;
		
    case MAP_HIROM_SRAM:
		if (Memory.SRAMMask)
		{
			/* BJ: no FAST_LSB_WORD_ACCESS here, since if Memory.SRAMMask=0x7ff
			 * then the high byte doesn't follow the low byte. */
			*(Memory.SRAM + 
				(((Address & 0x7fff) - 0x6000 +
				((Address & 0xf0000) >> 3) & Memory.SRAMMask))) = (uint8) Word;
			*(Memory.SRAM + 
				((((Address + 1) & 0x7fff) - 0x6000 +
				(((Address + 1) & 0xf0000) >> 3) & Memory.SRAMMask))) = (uint8) (Word >> 8);
			CPU.SRAMModified = TRUE;
		}
		return;
		
    case MAP_BWRAM:
#ifdef FAST_LSB_WORD_ACCESS
		*(uint16 *) (Memory.BWRAM + ((Address & 0x7fff) - 0x6000)) = Word;
#else
		*(Memory.BWRAM + ((Address & 0x7fff) - 0x6000)) = (uint8) Word;
		*(Memory.BWRAM + (((Address + 1) & 0x7fff) - 0x6000)) = (uint8) (Word >> 8);
#endif
		CPU.SRAMModified = TRUE;
		return;
		
    case MAP_DEBUG:
	
	case MAP_SPC7110_DRAM:
		s7r.bank50[(Address & 0xffff)]= (uint8) Word;
		s7r.bank50[((Address + 1) & 0xffff)]= (uint8) Word;
		break;
    case MAP_SA1RAM:
		*(Memory.SRAM + (Address & 0xffff)) = (uint8) Word;
		*(Memory.SRAM + ((Address + 1) & 0xffff)) = (uint8) (Word >> 8);
		SA1.Executing = !SA1.Waiting;
		break;
		
    case MAP_C4:
		S9xSetC4 (Word & 0xff, Address & 0xffff);
		S9xSetC4 ((uint8) (Word >> 8), (Address + 1) & 0xffff);
		return;

	case MAP_OBC_RAM:
		SetOBC1(Word & 0xff, Address &0xFFFF);
		SetOBC1 ((uint8) (Word >> 8), (Address + 1) & 0xffff);
		return;
	
	case MAP_SETA_DSP:
		S9xSetSetaDSP (Word & 0xff, Address);
		S9xSetSetaDSP ((uint8) (Word >> 8),(Address + 1));
		return;
	
	case MAP_SETA_RISC:
		S9xSetST018 (Word & 0xff, Address);
		S9xSetST018 ((uint8) (Word >> 8),(Address + 1));
		return;

    default:
    case MAP_NONE:
#ifdef MK_TRACE_BAD_WRITES
		char address[20];
		sprintf(address, TEXT("%06X"),Address);
		MessageBox(GUI.hWnd, address, TEXT("SetWord"), MB_OK);
#endif

		return;
    }
}

uint8 *GetBasePointer (uint32 Address)
{
    uint8 *GetAddress = Memory.Map [(Address >> MEMMAP_SHIFT) & MEMMAP_MASK];
    if (GetAddress >= (uint8 *) MAP_LAST)
		return (GetAddress);
	if(Settings.SPC7110&&((Address&0x7FFFFF)==0x4800))
	{
		return s7r.bank50;
	}
    switch ((intptr_t) GetAddress)
    {
	case MAP_SPC7110_DRAM:
		{
			return s7r.bank50;
		}
	case MAP_SPC7110_ROM:
		return Get7110BasePtr(Address);
    case MAP_PPU:
//just a guess, but it looks like this should match the CPU as a source.
		return (Memory.FillRAM);
//		return (Memory.FillRAM - 0x2000);
    case MAP_CPU:
//fixes Ogre Battle's green lines
		return (Memory.FillRAM);
//		return (Memory.FillRAM - 0x4000);
    case MAP_DSP:
		return (Memory.FillRAM - 0x6000);
    case MAP_SA1RAM:
    case MAP_LOROM_SRAM:
		return (Memory.SRAM);
    case MAP_BWRAM:
		return (Memory.BWRAM - 0x6000);
    case MAP_HIROM_SRAM:
		return (Memory.SRAM - 0x6000);
    case MAP_C4:
		return (Memory.C4RAM - 0x6000);
	case MAP_OBC_RAM:
		return GetBasePointerOBC1(Address);
	case MAP_SETA_DSP:
		return Memory.SRAM;
    case MAP_DEBUG:
		
    default:
    case MAP_NONE:
#if defined(MK_TRACE_BAD_READS) || defined(MK_TRACE_BAD_WRITES)
		char fsd[12];
		sprintf(fsd, TEXT("%06X"), Address);
		MessageBox(GUI.hWnd, fsd, TEXT("Rogue DMA"), MB_OK);
#endif

		return (0);
    }
}

uint8 *S9xGetMemPointer (uint32 Address)
{
    uint8 *GetAddress = Memory.Map [(Address >> MEMMAP_SHIFT) & MEMMAP_MASK];
    if (GetAddress >= (uint8 *) MAP_LAST)
		return (GetAddress + (Address & 0xffff));
	
	if(Settings.SPC7110&&((Address&0x7FFFFF)==0x4800))
		return s7r.bank50;

    switch ((intptr_t) GetAddress)
    {
	case MAP_SPC7110_DRAM:
		return &s7r.bank50[Address&0x0000FFFF];
    case MAP_PPU:
		return (Memory.FillRAM + (Address & 0xffff));
    case MAP_CPU:
		return (Memory.FillRAM + (Address & 0xffff));
    case MAP_DSP:
		return (Memory.FillRAM - 0x6000 + (Address & 0xffff));
    case MAP_SA1RAM:
    case MAP_LOROM_SRAM:
		return (Memory.SRAM + (Address & 0xffff));
    case MAP_BWRAM:
		return (Memory.BWRAM - 0x6000 + (Address & 0xffff));
    case MAP_HIROM_SRAM:
		return (Memory.SRAM - 0x6000 + (Address & 0xffff));
    case MAP_C4:
		return (Memory.C4RAM - 0x6000 + (Address & 0xffff));
	case MAP_OBC_RAM:
		return GetMemPointerOBC1(Address);
	case MAP_SETA_DSP:
		return Memory.SRAM+ ((Address & 0xffff) & Memory.SRAMMask);
    case MAP_DEBUG:
    default:
    case MAP_NONE:
#if defined(MK_TRACE_BAD_READS) || defined(MK_TRACE_BAD_WRITES)
		char fsd[12];
		sprintf(fsd, TEXT("%06X"), Address);
		MessageBox(GUI.hWnd, fsd, TEXT("Rogue DMA"), MB_OK);
#endif

		return (0);
    }
}

void S9xSetPCBase (uint32 Address)
{
    int block;
    uint8 *GetAddress = Memory.Map [block = (Address >> MEMMAP_SHIFT) & MEMMAP_MASK];

	CPU.MemSpeed = Memory.MemorySpeed [block];
	CPU.MemSpeedx2 = CPU.MemSpeed << 1;
 
   if (GetAddress >= (uint8 *) MAP_LAST)
    {
		CPU.PCBase = GetAddress;
		CPU.PC = GetAddress + (Address & 0xffff);
		return;
    }
	
    switch ((intptr_t) GetAddress)
    {
    case MAP_PPU:
		CPU.PCBase = Memory.FillRAM;
		CPU.PC = CPU.PCBase + (Address & 0xffff);
		return;
		
    case MAP_CPU:
		CPU.PCBase = Memory.FillRAM;
		CPU.PC = CPU.PCBase + (Address & 0xffff);
		return;
		
    case MAP_DSP:
		CPU.PCBase = Memory.FillRAM - 0x6000;
		CPU.PC = CPU.PCBase + (Address & 0xffff);
		return;
		
    case MAP_SA1RAM:
    case MAP_LOROM_SRAM:
		CPU.PCBase = Memory.SRAM;
		CPU.PC = CPU.PCBase + (Address & 0xffff);
		return;
		
    case MAP_BWRAM:
		CPU.PCBase = Memory.BWRAM - 0x6000;
		CPU.PC = CPU.PCBase + (Address & 0xffff);
		return;
    case MAP_HIROM_SRAM:
		CPU.PCBase = Memory.SRAM - 0x6000;
		CPU.PC = CPU.PCBase + (Address & 0xffff);
		return;
		
    case MAP_C4:
		CPU.PCBase = Memory.C4RAM - 0x6000;
		CPU.PC = CPU.PCBase + (Address & 0xffff);
		return;
		
    case MAP_DEBUG:
		
    default:
    case MAP_NONE:
		CPU.PCBase = Memory.SRAM;
		CPU.PC = Memory.SRAM + (Address & 0xffff);
		return;
    }
}
#endif