eliminate texrels (wip)
[picodrive.git] / pico / carthw / carthw.c
CommitLineData
a12b1b29 1/*
000f5335 2 * Support for a few cart mappers and some protection.
30f0fdd4 3 * (C) notaz, 2008-2011
65ca3034 4 *
cff531af 5 * This work is licensed under the terms of MAME license.
6 * See COPYING file in the top-level directory.
a12b1b29 7 */
8
efcba75f 9#include "../pico_int.h"
45f2f245 10#include "../memory.h"
757f8dae 11
a12b1b29 12
000f5335 13/* The SSFII mapper */
30f0fdd4 14static unsigned char ssf2_banks[8];
000f5335 15
16static carthw_state_chunk carthw_ssf2_state[] =
17{
18 { CHUNK_CARTHW, sizeof(ssf2_banks), &ssf2_banks },
19 { 0, 0, NULL }
20};
21
22static void carthw_ssf2_write8(u32 a, u32 d)
23{
24 u32 target, base;
25
26 if ((a & 0xfffff0) != 0xa130f0) {
27 PicoWrite8_io(a, d);
28 return;
29 }
30
31 a &= 0x0e;
32 if (a == 0)
33 return;
34
35 ssf2_banks[a >> 1] = d;
36 base = d << 19;
37 target = a << 18;
38 if (base + 0x80000 > Pico.romsize) {
39 elprintf(EL_ANOMALY|EL_STATUS, "ssf2: missing bank @ %06x", base);
40 return;
41 }
42
43 cpu68k_map_set(m68k_read8_map, target, target + 0x80000 - 1, Pico.rom + base, 0);
44 cpu68k_map_set(m68k_read16_map, target, target + 0x80000 - 1, Pico.rom + base, 0);
45}
46
47static void carthw_ssf2_mem_setup(void)
48{
49 cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_ssf2_write8, 1);
50}
51
52static void carthw_ssf2_statef(void)
53{
54 int i;
55 for (i = 1; i < 8; i++)
56 carthw_ssf2_write8(0xa130f0 | (i << 1), ssf2_banks[i]);
57}
58
59void carthw_ssf2_startup(void)
60{
61 int i;
62
63 elprintf(EL_STATUS, "SSF2 mapper startup");
64
65 // default map
66 for (i = 0; i < 8; i++)
67 ssf2_banks[i] = i;
68
69 PicoCartMemSetup = carthw_ssf2_mem_setup;
70 PicoLoadStateHook = carthw_ssf2_statef;
71 carthw_chunks = carthw_ssf2_state;
72}
73
74
45f2f245 75/* Common *-in-1 pirate mapper.
76 * Switches banks based on addr lines when /TIME is set.
77 * TODO: verify
78 */
79static unsigned int carthw_Xin1_baddr = 0;
757f8dae 80
45f2f245 81static void carthw_Xin1_do(u32 a, int mask, int shift)
757f8dae 82{
83 int len;
84
45f2f245 85 carthw_Xin1_baddr = a;
86 a &= mask;
87 a <<= shift;
757f8dae 88 len = Pico.romsize - a;
89 if (len <= 0) {
45f2f245 90 elprintf(EL_ANOMALY|EL_STATUS, "X-in-1: missing bank @ %06x", a);
757f8dae 91 return;
92 }
93
45f2f245 94 len = (len + M68K_BANK_MASK) & ~M68K_BANK_MASK;
95 cpu68k_map_set(m68k_read8_map, 0x000000, len - 1, Pico.rom + a, 0);
96 cpu68k_map_set(m68k_read16_map, 0x000000, len - 1, Pico.rom + a, 0);
757f8dae 97}
98
45f2f245 99static carthw_state_chunk carthw_Xin1_state[] =
757f8dae 100{
45f2f245 101 { CHUNK_CARTHW, sizeof(carthw_Xin1_baddr), &carthw_Xin1_baddr },
102 { 0, 0, NULL }
103};
104
105// TODO: test a0, reads, w16
106static void carthw_Xin1_write8(u32 a, u32 d)
107{
108 if ((a & 0xffff00) != 0xa13000) {
109 PicoWrite8_io(a, d);
110 return;
111 }
112
113 carthw_Xin1_do(a, 0x3f, 16);
757f8dae 114}
115
45f2f245 116static void carthw_Xin1_mem_setup(void)
bdec53c9 117{
45f2f245 118 cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_Xin1_write8, 1);
bdec53c9 119}
120
45f2f245 121static void carthw_Xin1_reset(void)
757f8dae 122{
45f2f245 123 carthw_Xin1_write8(0xa13000, 0);
124}
757f8dae 125
45f2f245 126static void carthw_Xin1_statef(void)
127{
128 carthw_Xin1_write8(carthw_Xin1_baddr, 0);
129}
757f8dae 130
45f2f245 131void carthw_Xin1_startup(void)
132{
133 elprintf(EL_STATUS, "X-in-1 mapper startup");
757f8dae 134
45f2f245 135 PicoCartMemSetup = carthw_Xin1_mem_setup;
136 PicoResetHook = carthw_Xin1_reset;
137 PicoLoadStateHook = carthw_Xin1_statef;
138 carthw_chunks = carthw_Xin1_state;
757f8dae 139}
140
a12b1b29 141
142/* Realtec, based on TascoDLX doc
143 * http://www.sharemation.com/TascoDLX/REALTEC%20Cart%20Mapper%20-%20description%20v1.txt
144 */
145static int realtec_bank = 0x80000000, realtec_size = 0x80000000;
a12b1b29 146
45f2f245 147static void carthw_realtec_write8(u32 a, u32 d)
a12b1b29 148{
149 int i, bank_old = realtec_bank, size_old = realtec_size;
150
151 if (a == 0x400000)
152 {
153 realtec_bank &= 0x0e0000;
154 realtec_bank |= 0x300000 & (d << 19);
155 if (realtec_bank != bank_old)
156 elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc);
157 }
158 else if (a == 0x402000)
159 {
160 realtec_size = (d << 17) & 0x3e0000;
161 if (realtec_size != size_old)
162 elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc);
163 }
164 else if (a == 0x404000)
165 {
166 realtec_bank &= 0x300000;
167 realtec_bank |= 0x0e0000 & (d << 17);
168 if (realtec_bank != bank_old)
169 elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc);
170 }
171 else
172 elprintf(EL_ANOMALY, "realtec: unexpected write [%06x] %02x @ %06x", a, d, SekPc);
65ca3034 173
a12b1b29 174 if (realtec_bank >= 0 && realtec_size >= 0 &&
175 (realtec_bank != bank_old || realtec_size != size_old))
176 {
177 elprintf(EL_ANOMALY, "realtec: new bank %06x, size %06x", realtec_bank, realtec_size, SekPc);
45f2f245 178 if (realtec_size > Pico.romsize - realtec_bank)
a12b1b29 179 {
180 elprintf(EL_ANOMALY, "realtec: bank too large / out of range?");
181 return;
182 }
183
45f2f245 184 for (i = 0; i < 0x400000; i += realtec_size) {
185 cpu68k_map_set(m68k_read8_map, i, realtec_size - 1, Pico.rom + realtec_bank, 0);
186 cpu68k_map_set(m68k_read16_map, i, realtec_size - 1, Pico.rom + realtec_bank, 0);
187 }
a12b1b29 188 }
189}
190
0b35350d 191static void carthw_realtec_reset(void)
a12b1b29 192{
193 int i;
45f2f245 194
a12b1b29 195 /* map boot code */
45f2f245 196 for (i = 0; i < 0x400000; i += M68K_BANK_SIZE) {
197 cpu68k_map_set(m68k_read8_map, i, i + M68K_BANK_SIZE - 1, Pico.rom + Pico.romsize, 0);
198 cpu68k_map_set(m68k_read16_map, i, i + M68K_BANK_SIZE - 1, Pico.rom + Pico.romsize, 0);
199 }
200 cpu68k_map_set(m68k_write8_map, 0x400000, 0x400000 + M68K_BANK_SIZE - 1, carthw_realtec_write8, 1);
a12b1b29 201 realtec_bank = realtec_size = 0x80000000;
202}
203
204void carthw_realtec_startup(void)
205{
45f2f245 206 int i;
a12b1b29 207
45f2f245 208 elprintf(EL_STATUS, "Realtec mapper startup");
a12b1b29 209
45f2f245 210 // allocate additional bank for boot code
211 // (we know those ROMs have aligned size)
a736af3e 212 i = PicoCartResize(Pico.romsize + M68K_BANK_SIZE);
213 if (i != 0) {
a12b1b29 214 elprintf(EL_STATUS, "OOM");
215 return;
216 }
a12b1b29 217
45f2f245 218 // create bank for boot code
219 for (i = 0; i < M68K_BANK_SIZE; i += 0x2000)
220 memcpy(Pico.rom + Pico.romsize + i, Pico.rom + Pico.romsize - 0x2000, 0x2000);
221
a12b1b29 222 PicoResetHook = carthw_realtec_reset;
223}
224
0b35350d 225/* Radica mapper, based on DevSter's info
226 * http://devster.monkeeh.com/sega/radica/
45f2f245 227 * XXX: mostly the same as X-in-1, merge?
0b35350d 228 */
45f2f245 229static u32 carthw_radica_read16(u32 a)
0b35350d 230{
45f2f245 231 if ((a & 0xffff00) != 0xa13000)
232 return PicoRead16_io(a);
0b35350d 233
45f2f245 234 carthw_Xin1_do(a, 0x7e, 15);
0b35350d 235
236 return 0;
237}
238
45f2f245 239static void carthw_radica_mem_setup(void)
240{
241 cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, carthw_radica_read16, 1);
242}
243
0b35350d 244static void carthw_radica_statef(void)
245{
45f2f245 246 carthw_radica_read16(carthw_Xin1_baddr);
0b35350d 247}
248
249static void carthw_radica_reset(void)
250{
45f2f245 251 carthw_radica_read16(0xa13000);
0b35350d 252}
253
254void carthw_radica_startup(void)
255{
45f2f245 256 elprintf(EL_STATUS, "Radica mapper startup");
0b35350d 257
45f2f245 258 PicoCartMemSetup = carthw_radica_mem_setup;
259 PicoResetHook = carthw_radica_reset;
0b35350d 260 PicoLoadStateHook = carthw_radica_statef;
45f2f245 261 carthw_chunks = carthw_Xin1_state;
0b35350d 262}
263
30f0fdd4 264
265/* Pier Solar. Based on my own research */
266static unsigned char pier_regs[8];
267static unsigned char pier_dump_prot;
268
269static carthw_state_chunk carthw_pier_state[] =
270{
271 { CHUNK_CARTHW, sizeof(pier_regs), pier_regs },
272 { CHUNK_CARTHW + 1, sizeof(pier_dump_prot), &pier_dump_prot },
273 { 0, 0, NULL }
274};
275
276static void carthw_pier_write8(u32 a, u32 d)
277{
278 u32 a8, target, base;
279
280 if ((a & 0xffff00) != 0xa13000) {
281 PicoWrite8_io(a, d);
282 return;
283 }
284
285 a8 = a & 0x0f;
286 pier_regs[a8 / 2] = d;
287
288 elprintf(EL_UIO, "pier w8 [%06x] %02x @%06x", a, d & 0xffff, SekPc);
289 switch (a8) {
290 case 0x01:
291 break;
292 case 0x03:
293 if (!(pier_regs[0] & 2))
294 goto unmapped;
295 target = 0x280000;
296 base = d << 19;
297 goto do_map;
298 case 0x05:
299 if (!(pier_regs[0] & 2))
300 goto unmapped;
301 target = 0x300000;
302 base = d << 19;
303 goto do_map;
304 case 0x07:
305 if (!(pier_regs[0] & 2))
306 goto unmapped;
307 target = 0x380000;
308 base = d << 19;
309 goto do_map;
310 case 0x09:
311 // TODO
312 break;
313 case 0x0b:
314 // eeprom read
315 default:
316 unmapped:
317 //elprintf(EL_UIO, "pier w8 [%06x] %02x @%06x", a, d & 0xffff, SekPc);
318 elprintf(EL_STATUS, "-- unmapped w8 [%06x] %02x @%06x", a, d & 0xffff, SekPc);
319 break;
320 }
321 return;
322
323do_map:
324 if (base + 0x80000 > Pico.romsize) {
325 elprintf(EL_ANOMALY|EL_STATUS, "pier: missing bank @ %06x", base);
326 return;
327 }
328 cpu68k_map_set(m68k_read8_map, target, target + 0x80000 - 1, Pico.rom + base, 0);
329 cpu68k_map_set(m68k_read16_map, target, target + 0x80000 - 1, Pico.rom + base, 0);
330}
331
332static void carthw_pier_write16(u32 a, u32 d)
333{
334 if ((a & 0xffff00) != 0xa13000) {
335 PicoWrite16_io(a, d);
336 return;
337 }
338
339 elprintf(EL_UIO, "pier w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc);
340 carthw_pier_write8(a + 1, d);
341}
342
343static u32 carthw_pier_read8(u32 a)
344{
345 if ((a & 0xffff00) != 0xa13000)
346 return PicoRead8_io(a);
347
348 if (a == 0xa1300b)
349 return 0; // TODO
350
351 elprintf(EL_UIO, "pier r8 [%06x] @%06x", a, SekPc);
352 return 0;
353}
354
355static void carthw_pier_statef(void);
356
357static u32 carthw_pier_prot_read8(u32 a)
358{
359 /* it takes more than just these reads here to disable ROM protection,
360 * but for game emulation purposes this is enough. */
361 if (pier_dump_prot > 0)
362 pier_dump_prot--;
363 if (pier_dump_prot == 0) {
364 carthw_pier_statef();
365 elprintf(EL_STATUS, "prot off on r8 @%06x", SekPc);
366 }
367 elprintf(EL_UIO, "pier r8 [%06x] @%06x", a, SekPc);
368
369 return Pico.rom[(a & 0x7fff) ^ 1];
370}
371
372static void carthw_pier_mem_setup(void)
373{
374 cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_pier_write8, 1);
375 cpu68k_map_set(m68k_write16_map, 0xa10000, 0xa1ffff, carthw_pier_write16, 1);
376 cpu68k_map_set(m68k_read8_map, 0xa10000, 0xa1ffff, carthw_pier_read8, 1);
377}
378
379static void carthw_pier_prot_mem_setup(int prot_enable)
380{
381 if (prot_enable) {
382 /* the dump protection.. */
383 int a;
384 for (a = 0x000000; a < 0x400000; a += M68K_BANK_SIZE) {
385 cpu68k_map_set(m68k_read8_map, a, a + 0xffff, Pico.rom + Pico.romsize, 0);
386 cpu68k_map_set(m68k_read16_map, a, a + 0xffff, Pico.rom + Pico.romsize, 0);
387 }
388 cpu68k_map_set(m68k_read8_map, M68K_BANK_SIZE, M68K_BANK_SIZE * 2 - 1,
389 carthw_pier_prot_read8, 1);
390 }
391 else {
392 cpu68k_map_set(m68k_read8_map, 0, 0x27ffff, Pico.rom, 0);
393 cpu68k_map_set(m68k_read16_map, 0, 0x27ffff, Pico.rom, 0);
394 }
395}
396
397static void carthw_pier_statef(void)
398{
399 carthw_pier_prot_mem_setup(pier_dump_prot);
400
401 if (!pier_dump_prot) {
402 /* setup all banks */
403 u32 r0 = pier_regs[0];
404 carthw_pier_write8(0xa13001, 3);
405 carthw_pier_write8(0xa13003, pier_regs[1]);
406 carthw_pier_write8(0xa13005, pier_regs[2]);
407 carthw_pier_write8(0xa13007, pier_regs[3]);
408 carthw_pier_write8(0xa13001, r0);
409 }
410}
411
412static void carthw_pier_reset(void)
413{
414 pier_regs[0] = 1;
415 pier_regs[1] = pier_regs[2] = pier_regs[3] = 0;
416 pier_dump_prot = 3;
417 carthw_pier_statef();
418}
419
420void carthw_pier_startup(void)
421{
422 int i;
423
424 elprintf(EL_STATUS, "Pier Solar mapper startup");
425
426 // mostly same as for realtec..
427 i = PicoCartResize(Pico.romsize + M68K_BANK_SIZE);
428 if (i != 0) {
429 elprintf(EL_STATUS, "OOM");
430 return;
431 }
432
433 // create dump protection bank
434 for (i = 0; i < M68K_BANK_SIZE; i += 0x8000)
435 memcpy(Pico.rom + Pico.romsize + i, Pico.rom, 0x8000);
436
437 PicoCartMemSetup = carthw_pier_mem_setup;
438 PicoResetHook = carthw_pier_reset;
439 PicoLoadStateHook = carthw_pier_statef;
440 carthw_chunks = carthw_pier_state;
441}
442
000f5335 443/* Simple unlicensed ROM protection emulation */
444static struct {
30f0fdd4 445 u32 addr;
446 u32 mask;
447 u16 val;
448 u16 readonly;
000f5335 449} *sprot_items;
450static int sprot_item_alloc;
451static int sprot_item_count;
452
453static u16 *carthw_sprot_get_val(u32 a, int rw_only)
454{
30f0fdd4 455 int i;
456
457 for (i = 0; i < sprot_item_count; i++)
458 if ((a & sprot_items[i].mask) == sprot_items[i].addr)
459 if (!rw_only || !sprot_items[i].readonly)
460 return &sprot_items[i].val;
000f5335 461
30f0fdd4 462 return NULL;
000f5335 463}
464
465static u32 PicoRead8_sprot(u32 a)
466{
467 u16 *val;
468 u32 d;
469
470 if (0xa10000 <= a && a < 0xa12000)
471 return PicoRead8_io(a);
472
473 val = carthw_sprot_get_val(a, 0);
474 if (val != NULL) {
475 d = *val;
476 if (!(a & 1))
477 d >>= 8;
478 elprintf(EL_UIO, "prot r8 [%06x] %02x @%06x", a, d, SekPc);
479 return d;
480 }
481 else {
482 elprintf(EL_UIO, "prot r8 [%06x] MISS @%06x", a, SekPc);
483 return 0;
484 }
485}
486
487static u32 PicoRead16_sprot(u32 a)
488{
489 u16 *val;
490
491 if (0xa10000 <= a && a < 0xa12000)
492 return PicoRead16_io(a);
493
494 val = carthw_sprot_get_val(a, 0);
495 if (val != NULL) {
496 elprintf(EL_UIO, "prot r16 [%06x] %04x @%06x", a, *val, SekPc);
497 return *val;
498 }
499 else {
500 elprintf(EL_UIO, "prot r16 [%06x] MISS @%06x", a, SekPc);
501 return 0;
502 }
503}
504
505static void PicoWrite8_sprot(u32 a, u32 d)
506{
507 u16 *val;
508
509 if (0xa10000 <= a && a < 0xa12000) {
510 PicoWrite8_io(a, d);
511 return;
512 }
513
514 val = carthw_sprot_get_val(a, 1);
515 if (val != NULL) {
516 if (a & 1)
517 *val = (*val & 0xff00) | (d | 0xff);
518 else
519 *val = (*val & 0x00ff) | (d << 8);
520 elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc);
521 }
522 else
523 elprintf(EL_UIO, "prot w8 [%06x] %02x MISS @%06x", a, d & 0xff, SekPc);
524}
525
526static void PicoWrite16_sprot(u32 a, u32 d)
527{
528 u16 *val;
529
530 if (0xa10000 <= a && a < 0xa12000) {
531 PicoWrite16_io(a, d);
532 return;
533 }
534
535 val = carthw_sprot_get_val(a, 1);
536 if (val != NULL) {
537 *val = d;
538 elprintf(EL_UIO, "prot w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc);
539 }
540 else
541 elprintf(EL_UIO, "prot w16 [%06x] %04x MISS @%06x", a, d & 0xffff, SekPc);
542}
543
544void carthw_sprot_new_location(unsigned int a, unsigned int mask, unsigned short val, int is_ro)
545{
546 if (sprot_items == NULL) {
547 sprot_items = calloc(8, sizeof(sprot_items[0]));
548 sprot_item_alloc = 8;
549 sprot_item_count = 0;
550 }
551
552 if (sprot_item_count == sprot_item_alloc) {
553 void *tmp;
554 sprot_item_alloc *= 2;
555 tmp = realloc(sprot_items, sprot_item_alloc);
556 if (tmp == NULL) {
557 elprintf(EL_STATUS, "OOM");
558 return;
559 }
560 sprot_items = tmp;
561 }
562
563 sprot_items[sprot_item_count].addr = a;
564 sprot_items[sprot_item_count].mask = mask;
565 sprot_items[sprot_item_count].val = val;
566 sprot_items[sprot_item_count].readonly = is_ro;
567 sprot_item_count++;
568}
569
570static void carthw_sprot_unload(void)
571{
572 free(sprot_items);
573 sprot_items = NULL;
574 sprot_item_count = sprot_item_alloc = 0;
575}
576
577static void carthw_sprot_mem_setup(void)
578{
579 int start;
580
581 // map ROM - 0x7fffff, /TIME areas (which are tipically used)
582 start = (Pico.romsize + M68K_BANK_MASK) & ~M68K_BANK_MASK;
583 cpu68k_map_set(m68k_read8_map, start, 0x7fffff, PicoRead8_sprot, 1);
584 cpu68k_map_set(m68k_read16_map, start, 0x7fffff, PicoRead16_sprot, 1);
585 cpu68k_map_set(m68k_write8_map, start, 0x7fffff, PicoWrite8_sprot, 1);
586 cpu68k_map_set(m68k_write16_map, start, 0x7fffff, PicoWrite16_sprot, 1);
587
588 cpu68k_map_set(m68k_read8_map, 0xa10000, 0xa1ffff, PicoRead8_sprot, 1);
589 cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, PicoRead16_sprot, 1);
590 cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, PicoWrite8_sprot, 1);
591 cpu68k_map_set(m68k_write16_map, 0xa10000, 0xa1ffff, PicoWrite16_sprot, 1);
592}
593
594void carthw_sprot_startup(void)
595{
596 elprintf(EL_STATUS, "Prot emu startup");
597
598 PicoCartMemSetup = carthw_sprot_mem_setup;
599 PicoCartUnloadHook = carthw_sprot_unload;
600}
601
602/* Protection emulation for Lion King 3. Credits go to Haze */
603static u8 prot_lk3_cmd, prot_lk3_data;
604
605static u32 PicoRead8_plk3(u32 a)
606{
607 u32 d = 0;
608 switch (prot_lk3_cmd) {
609 case 1: d = prot_lk3_data >> 1; break;
610 case 2: // nibble rotate
611 d = ((prot_lk3_data >> 4) | (prot_lk3_data << 4)) & 0xff;
612 break;
613 case 3: // bit rotate
614 d = prot_lk3_data;
615 d = (d >> 4) | (d << 4);
616 d = ((d & 0xcc) >> 2) | ((d & 0x33) << 2);
617 d = ((d & 0xaa) >> 1) | ((d & 0x55) << 1);
618 break;
619/* Top Fighter 2000 MK VIII (Unl)
620 case 0x98: d = 0x50; break; // prot_lk3_data == a8 here
621 case 0x67: d = 0xde; break; // prot_lk3_data == 7b here (rot!)
622 case 0xb5: d = 0x9f; break; // prot_lk3_data == 4a
623*/
624 default:
625 elprintf(EL_UIO, "unhandled prot cmd %02x @%06x", prot_lk3_cmd, SekPc);
626 break;
627 }
628
629 elprintf(EL_UIO, "prot r8 [%06x] %02x @%06x", a, d, SekPc);
630 return d;
631}
632
633static void PicoWrite8_plk3p(u32 a, u32 d)
634{
635 elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc);
636 if (a & 2)
637 prot_lk3_cmd = d;
638 else
639 prot_lk3_data = d;
640}
641
642static void PicoWrite8_plk3b(u32 a, u32 d)
643{
644 int addr;
645
646 elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc);
647 addr = d << 15;
648 if (addr + 0x8000 > Pico.romsize) {
649 elprintf(EL_UIO|EL_ANOMALY, "prot_lk3: bank too large: %02x", d);
650 return;
651 }
652 if (addr == 0)
653 memcpy(Pico.rom, Pico.rom + Pico.romsize, 0x8000);
654 else
655 memcpy(Pico.rom, Pico.rom + addr, 0x8000);
656}
657
658static void carthw_prot_lk3_mem_setup(void)
659{
660 cpu68k_map_set(m68k_read8_map, 0x600000, 0x7fffff, PicoRead8_plk3, 1);
661 cpu68k_map_set(m68k_write8_map, 0x600000, 0x6fffff, PicoWrite8_plk3p, 1);
662 cpu68k_map_set(m68k_write8_map, 0x700000, 0x7fffff, PicoWrite8_plk3b, 1);
663}
664
665void carthw_prot_lk3_startup(void)
666{
a736af3e 667 int ret;
000f5335 668
669 elprintf(EL_STATUS, "lk3 prot emu startup");
670
671 // allocate space for bank0 backup
a736af3e 672 ret = PicoCartResize(Pico.romsize + 0x8000);
673 if (ret != 0) {
000f5335 674 elprintf(EL_STATUS, "OOM");
675 return;
676 }
000f5335 677 memcpy(Pico.rom + Pico.romsize, Pico.rom, 0x8000);
678
679 PicoCartMemSetup = carthw_prot_lk3_mem_setup;
680}
681