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" |
6a47c2d4 |
11 | #include "eeprom_spi.h" |
757f8dae |
12 | |
a12b1b29 |
13 | |
f5080654 |
14 | static int have_bank(u32 base) |
15 | { |
16 | // the loader allocs in 512K quantities |
17 | if (base >= Pico.romsize) { |
18 | elprintf(EL_ANOMALY|EL_STATUS, "carthw: missing bank @ %06x", base); |
19 | return 0; |
20 | } |
21 | return 1; |
22 | } |
23 | |
000f5335 |
24 | /* The SSFII mapper */ |
30f0fdd4 |
25 | static unsigned char ssf2_banks[8]; |
000f5335 |
26 | |
27 | static carthw_state_chunk carthw_ssf2_state[] = |
28 | { |
29 | { CHUNK_CARTHW, sizeof(ssf2_banks), &ssf2_banks }, |
30 | { 0, 0, NULL } |
31 | }; |
32 | |
33 | static void carthw_ssf2_write8(u32 a, u32 d) |
34 | { |
35 | u32 target, base; |
36 | |
37 | if ((a & 0xfffff0) != 0xa130f0) { |
38 | PicoWrite8_io(a, d); |
39 | return; |
40 | } |
41 | |
42 | a &= 0x0e; |
43 | if (a == 0) |
44 | return; |
45 | |
46 | ssf2_banks[a >> 1] = d; |
47 | base = d << 19; |
48 | target = a << 18; |
f5080654 |
49 | if (!have_bank(base)) |
000f5335 |
50 | return; |
000f5335 |
51 | |
52 | cpu68k_map_set(m68k_read8_map, target, target + 0x80000 - 1, Pico.rom + base, 0); |
53 | cpu68k_map_set(m68k_read16_map, target, target + 0x80000 - 1, Pico.rom + base, 0); |
54 | } |
55 | |
56 | static void carthw_ssf2_mem_setup(void) |
57 | { |
58 | cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_ssf2_write8, 1); |
59 | } |
60 | |
61 | static void carthw_ssf2_statef(void) |
62 | { |
63 | int i; |
64 | for (i = 1; i < 8; i++) |
65 | carthw_ssf2_write8(0xa130f0 | (i << 1), ssf2_banks[i]); |
66 | } |
67 | |
68 | void carthw_ssf2_startup(void) |
69 | { |
70 | int i; |
71 | |
72 | elprintf(EL_STATUS, "SSF2 mapper startup"); |
73 | |
74 | // default map |
75 | for (i = 0; i < 8; i++) |
76 | ssf2_banks[i] = i; |
77 | |
78 | PicoCartMemSetup = carthw_ssf2_mem_setup; |
79 | PicoLoadStateHook = carthw_ssf2_statef; |
80 | carthw_chunks = carthw_ssf2_state; |
81 | } |
82 | |
83 | |
45f2f245 |
84 | /* Common *-in-1 pirate mapper. |
85 | * Switches banks based on addr lines when /TIME is set. |
86 | * TODO: verify |
87 | */ |
88 | static unsigned int carthw_Xin1_baddr = 0; |
757f8dae |
89 | |
45f2f245 |
90 | static void carthw_Xin1_do(u32 a, int mask, int shift) |
757f8dae |
91 | { |
92 | int len; |
93 | |
45f2f245 |
94 | carthw_Xin1_baddr = a; |
95 | a &= mask; |
96 | a <<= shift; |
757f8dae |
97 | len = Pico.romsize - a; |
98 | if (len <= 0) { |
45f2f245 |
99 | elprintf(EL_ANOMALY|EL_STATUS, "X-in-1: missing bank @ %06x", a); |
757f8dae |
100 | return; |
101 | } |
102 | |
45f2f245 |
103 | len = (len + M68K_BANK_MASK) & ~M68K_BANK_MASK; |
104 | cpu68k_map_set(m68k_read8_map, 0x000000, len - 1, Pico.rom + a, 0); |
105 | cpu68k_map_set(m68k_read16_map, 0x000000, len - 1, Pico.rom + a, 0); |
757f8dae |
106 | } |
107 | |
45f2f245 |
108 | static carthw_state_chunk carthw_Xin1_state[] = |
757f8dae |
109 | { |
45f2f245 |
110 | { CHUNK_CARTHW, sizeof(carthw_Xin1_baddr), &carthw_Xin1_baddr }, |
111 | { 0, 0, NULL } |
112 | }; |
113 | |
114 | // TODO: test a0, reads, w16 |
115 | static void carthw_Xin1_write8(u32 a, u32 d) |
116 | { |
117 | if ((a & 0xffff00) != 0xa13000) { |
118 | PicoWrite8_io(a, d); |
119 | return; |
120 | } |
121 | |
122 | carthw_Xin1_do(a, 0x3f, 16); |
757f8dae |
123 | } |
124 | |
45f2f245 |
125 | static void carthw_Xin1_mem_setup(void) |
bdec53c9 |
126 | { |
45f2f245 |
127 | cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_Xin1_write8, 1); |
bdec53c9 |
128 | } |
129 | |
45f2f245 |
130 | static void carthw_Xin1_reset(void) |
757f8dae |
131 | { |
45f2f245 |
132 | carthw_Xin1_write8(0xa13000, 0); |
133 | } |
757f8dae |
134 | |
45f2f245 |
135 | static void carthw_Xin1_statef(void) |
136 | { |
137 | carthw_Xin1_write8(carthw_Xin1_baddr, 0); |
138 | } |
757f8dae |
139 | |
45f2f245 |
140 | void carthw_Xin1_startup(void) |
141 | { |
142 | elprintf(EL_STATUS, "X-in-1 mapper startup"); |
757f8dae |
143 | |
45f2f245 |
144 | PicoCartMemSetup = carthw_Xin1_mem_setup; |
145 | PicoResetHook = carthw_Xin1_reset; |
146 | PicoLoadStateHook = carthw_Xin1_statef; |
147 | carthw_chunks = carthw_Xin1_state; |
757f8dae |
148 | } |
149 | |
a12b1b29 |
150 | |
151 | /* Realtec, based on TascoDLX doc |
152 | * http://www.sharemation.com/TascoDLX/REALTEC%20Cart%20Mapper%20-%20description%20v1.txt |
153 | */ |
154 | static int realtec_bank = 0x80000000, realtec_size = 0x80000000; |
a12b1b29 |
155 | |
45f2f245 |
156 | static void carthw_realtec_write8(u32 a, u32 d) |
a12b1b29 |
157 | { |
158 | int i, bank_old = realtec_bank, size_old = realtec_size; |
159 | |
160 | if (a == 0x400000) |
161 | { |
162 | realtec_bank &= 0x0e0000; |
163 | realtec_bank |= 0x300000 & (d << 19); |
164 | if (realtec_bank != bank_old) |
165 | elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc); |
166 | } |
167 | else if (a == 0x402000) |
168 | { |
169 | realtec_size = (d << 17) & 0x3e0000; |
170 | if (realtec_size != size_old) |
171 | elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc); |
172 | } |
173 | else if (a == 0x404000) |
174 | { |
175 | realtec_bank &= 0x300000; |
176 | realtec_bank |= 0x0e0000 & (d << 17); |
177 | if (realtec_bank != bank_old) |
178 | elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc); |
179 | } |
180 | else |
181 | elprintf(EL_ANOMALY, "realtec: unexpected write [%06x] %02x @ %06x", a, d, SekPc); |
65ca3034 |
182 | |
a12b1b29 |
183 | if (realtec_bank >= 0 && realtec_size >= 0 && |
184 | (realtec_bank != bank_old || realtec_size != size_old)) |
185 | { |
186 | elprintf(EL_ANOMALY, "realtec: new bank %06x, size %06x", realtec_bank, realtec_size, SekPc); |
45f2f245 |
187 | if (realtec_size > Pico.romsize - realtec_bank) |
a12b1b29 |
188 | { |
189 | elprintf(EL_ANOMALY, "realtec: bank too large / out of range?"); |
190 | return; |
191 | } |
192 | |
45f2f245 |
193 | for (i = 0; i < 0x400000; i += realtec_size) { |
194 | cpu68k_map_set(m68k_read8_map, i, realtec_size - 1, Pico.rom + realtec_bank, 0); |
195 | cpu68k_map_set(m68k_read16_map, i, realtec_size - 1, Pico.rom + realtec_bank, 0); |
196 | } |
a12b1b29 |
197 | } |
198 | } |
199 | |
0b35350d |
200 | static void carthw_realtec_reset(void) |
a12b1b29 |
201 | { |
202 | int i; |
45f2f245 |
203 | |
a12b1b29 |
204 | /* map boot code */ |
45f2f245 |
205 | for (i = 0; i < 0x400000; i += M68K_BANK_SIZE) { |
206 | cpu68k_map_set(m68k_read8_map, i, i + M68K_BANK_SIZE - 1, Pico.rom + Pico.romsize, 0); |
207 | cpu68k_map_set(m68k_read16_map, i, i + M68K_BANK_SIZE - 1, Pico.rom + Pico.romsize, 0); |
208 | } |
209 | cpu68k_map_set(m68k_write8_map, 0x400000, 0x400000 + M68K_BANK_SIZE - 1, carthw_realtec_write8, 1); |
a12b1b29 |
210 | realtec_bank = realtec_size = 0x80000000; |
211 | } |
212 | |
213 | void carthw_realtec_startup(void) |
214 | { |
45f2f245 |
215 | int i; |
a12b1b29 |
216 | |
45f2f245 |
217 | elprintf(EL_STATUS, "Realtec mapper startup"); |
a12b1b29 |
218 | |
45f2f245 |
219 | // allocate additional bank for boot code |
220 | // (we know those ROMs have aligned size) |
a736af3e |
221 | i = PicoCartResize(Pico.romsize + M68K_BANK_SIZE); |
222 | if (i != 0) { |
a12b1b29 |
223 | elprintf(EL_STATUS, "OOM"); |
224 | return; |
225 | } |
a12b1b29 |
226 | |
45f2f245 |
227 | // create bank for boot code |
228 | for (i = 0; i < M68K_BANK_SIZE; i += 0x2000) |
229 | memcpy(Pico.rom + Pico.romsize + i, Pico.rom + Pico.romsize - 0x2000, 0x2000); |
230 | |
a12b1b29 |
231 | PicoResetHook = carthw_realtec_reset; |
232 | } |
233 | |
0b35350d |
234 | /* Radica mapper, based on DevSter's info |
235 | * http://devster.monkeeh.com/sega/radica/ |
45f2f245 |
236 | * XXX: mostly the same as X-in-1, merge? |
0b35350d |
237 | */ |
45f2f245 |
238 | static u32 carthw_radica_read16(u32 a) |
0b35350d |
239 | { |
45f2f245 |
240 | if ((a & 0xffff00) != 0xa13000) |
241 | return PicoRead16_io(a); |
0b35350d |
242 | |
45f2f245 |
243 | carthw_Xin1_do(a, 0x7e, 15); |
0b35350d |
244 | |
245 | return 0; |
246 | } |
247 | |
45f2f245 |
248 | static void carthw_radica_mem_setup(void) |
249 | { |
250 | cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, carthw_radica_read16, 1); |
251 | } |
252 | |
0b35350d |
253 | static void carthw_radica_statef(void) |
254 | { |
45f2f245 |
255 | carthw_radica_read16(carthw_Xin1_baddr); |
0b35350d |
256 | } |
257 | |
258 | static void carthw_radica_reset(void) |
259 | { |
45f2f245 |
260 | carthw_radica_read16(0xa13000); |
0b35350d |
261 | } |
262 | |
263 | void carthw_radica_startup(void) |
264 | { |
45f2f245 |
265 | elprintf(EL_STATUS, "Radica mapper startup"); |
0b35350d |
266 | |
45f2f245 |
267 | PicoCartMemSetup = carthw_radica_mem_setup; |
268 | PicoResetHook = carthw_radica_reset; |
0b35350d |
269 | PicoLoadStateHook = carthw_radica_statef; |
45f2f245 |
270 | carthw_chunks = carthw_Xin1_state; |
0b35350d |
271 | } |
272 | |
30f0fdd4 |
273 | |
274 | /* Pier Solar. Based on my own research */ |
275 | static unsigned char pier_regs[8]; |
276 | static unsigned char pier_dump_prot; |
277 | |
278 | static carthw_state_chunk carthw_pier_state[] = |
279 | { |
280 | { CHUNK_CARTHW, sizeof(pier_regs), pier_regs }, |
281 | { CHUNK_CARTHW + 1, sizeof(pier_dump_prot), &pier_dump_prot }, |
6a47c2d4 |
282 | { CHUNK_CARTHW + 2, 0, NULL }, // filled later |
30f0fdd4 |
283 | { 0, 0, NULL } |
284 | }; |
285 | |
286 | static void carthw_pier_write8(u32 a, u32 d) |
287 | { |
288 | u32 a8, target, base; |
289 | |
290 | if ((a & 0xffff00) != 0xa13000) { |
291 | PicoWrite8_io(a, d); |
292 | return; |
293 | } |
294 | |
295 | a8 = a & 0x0f; |
296 | pier_regs[a8 / 2] = d; |
297 | |
298 | elprintf(EL_UIO, "pier w8 [%06x] %02x @%06x", a, d & 0xffff, SekPc); |
299 | switch (a8) { |
300 | case 0x01: |
301 | break; |
302 | case 0x03: |
303 | if (!(pier_regs[0] & 2)) |
304 | goto unmapped; |
305 | target = 0x280000; |
306 | base = d << 19; |
307 | goto do_map; |
308 | case 0x05: |
309 | if (!(pier_regs[0] & 2)) |
310 | goto unmapped; |
311 | target = 0x300000; |
312 | base = d << 19; |
313 | goto do_map; |
314 | case 0x07: |
315 | if (!(pier_regs[0] & 2)) |
316 | goto unmapped; |
317 | target = 0x380000; |
318 | base = d << 19; |
319 | goto do_map; |
320 | case 0x09: |
6a47c2d4 |
321 | SRam.changed = 1; |
322 | eeprom_spi_write(d); |
30f0fdd4 |
323 | break; |
324 | case 0x0b: |
325 | // eeprom read |
326 | default: |
327 | unmapped: |
328 | //elprintf(EL_UIO, "pier w8 [%06x] %02x @%06x", a, d & 0xffff, SekPc); |
329 | elprintf(EL_STATUS, "-- unmapped w8 [%06x] %02x @%06x", a, d & 0xffff, SekPc); |
330 | break; |
331 | } |
332 | return; |
333 | |
334 | do_map: |
f5080654 |
335 | if (!have_bank(base)) |
30f0fdd4 |
336 | return; |
f5080654 |
337 | |
30f0fdd4 |
338 | cpu68k_map_set(m68k_read8_map, target, target + 0x80000 - 1, Pico.rom + base, 0); |
339 | cpu68k_map_set(m68k_read16_map, target, target + 0x80000 - 1, Pico.rom + base, 0); |
340 | } |
341 | |
342 | static void carthw_pier_write16(u32 a, u32 d) |
343 | { |
344 | if ((a & 0xffff00) != 0xa13000) { |
345 | PicoWrite16_io(a, d); |
346 | return; |
347 | } |
348 | |
349 | elprintf(EL_UIO, "pier w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc); |
350 | carthw_pier_write8(a + 1, d); |
351 | } |
352 | |
353 | static u32 carthw_pier_read8(u32 a) |
354 | { |
355 | if ((a & 0xffff00) != 0xa13000) |
356 | return PicoRead8_io(a); |
357 | |
358 | if (a == 0xa1300b) |
6a47c2d4 |
359 | return eeprom_spi_read(a); |
30f0fdd4 |
360 | |
361 | elprintf(EL_UIO, "pier r8 [%06x] @%06x", a, SekPc); |
362 | return 0; |
363 | } |
364 | |
365 | static void carthw_pier_statef(void); |
366 | |
367 | static u32 carthw_pier_prot_read8(u32 a) |
368 | { |
369 | /* it takes more than just these reads here to disable ROM protection, |
370 | * but for game emulation purposes this is enough. */ |
371 | if (pier_dump_prot > 0) |
372 | pier_dump_prot--; |
373 | if (pier_dump_prot == 0) { |
374 | carthw_pier_statef(); |
375 | elprintf(EL_STATUS, "prot off on r8 @%06x", SekPc); |
376 | } |
377 | elprintf(EL_UIO, "pier r8 [%06x] @%06x", a, SekPc); |
378 | |
379 | return Pico.rom[(a & 0x7fff) ^ 1]; |
380 | } |
381 | |
382 | static void carthw_pier_mem_setup(void) |
383 | { |
384 | cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_pier_write8, 1); |
385 | cpu68k_map_set(m68k_write16_map, 0xa10000, 0xa1ffff, carthw_pier_write16, 1); |
386 | cpu68k_map_set(m68k_read8_map, 0xa10000, 0xa1ffff, carthw_pier_read8, 1); |
387 | } |
388 | |
389 | static void carthw_pier_prot_mem_setup(int prot_enable) |
390 | { |
391 | if (prot_enable) { |
392 | /* the dump protection.. */ |
393 | int a; |
394 | for (a = 0x000000; a < 0x400000; a += M68K_BANK_SIZE) { |
395 | cpu68k_map_set(m68k_read8_map, a, a + 0xffff, Pico.rom + Pico.romsize, 0); |
396 | cpu68k_map_set(m68k_read16_map, a, a + 0xffff, Pico.rom + Pico.romsize, 0); |
397 | } |
398 | cpu68k_map_set(m68k_read8_map, M68K_BANK_SIZE, M68K_BANK_SIZE * 2 - 1, |
399 | carthw_pier_prot_read8, 1); |
400 | } |
401 | else { |
402 | cpu68k_map_set(m68k_read8_map, 0, 0x27ffff, Pico.rom, 0); |
403 | cpu68k_map_set(m68k_read16_map, 0, 0x27ffff, Pico.rom, 0); |
404 | } |
405 | } |
406 | |
407 | static void carthw_pier_statef(void) |
408 | { |
409 | carthw_pier_prot_mem_setup(pier_dump_prot); |
410 | |
411 | if (!pier_dump_prot) { |
412 | /* setup all banks */ |
413 | u32 r0 = pier_regs[0]; |
414 | carthw_pier_write8(0xa13001, 3); |
415 | carthw_pier_write8(0xa13003, pier_regs[1]); |
416 | carthw_pier_write8(0xa13005, pier_regs[2]); |
417 | carthw_pier_write8(0xa13007, pier_regs[3]); |
418 | carthw_pier_write8(0xa13001, r0); |
419 | } |
420 | } |
421 | |
422 | static void carthw_pier_reset(void) |
423 | { |
424 | pier_regs[0] = 1; |
425 | pier_regs[1] = pier_regs[2] = pier_regs[3] = 0; |
426 | pier_dump_prot = 3; |
427 | carthw_pier_statef(); |
6a47c2d4 |
428 | eeprom_spi_init(NULL); |
30f0fdd4 |
429 | } |
430 | |
431 | void carthw_pier_startup(void) |
432 | { |
6a47c2d4 |
433 | void *eeprom_state; |
434 | int eeprom_size = 0; |
30f0fdd4 |
435 | int i; |
436 | |
437 | elprintf(EL_STATUS, "Pier Solar mapper startup"); |
438 | |
439 | // mostly same as for realtec.. |
440 | i = PicoCartResize(Pico.romsize + M68K_BANK_SIZE); |
441 | if (i != 0) { |
442 | elprintf(EL_STATUS, "OOM"); |
443 | return; |
444 | } |
445 | |
446 | // create dump protection bank |
447 | for (i = 0; i < M68K_BANK_SIZE; i += 0x8000) |
448 | memcpy(Pico.rom + Pico.romsize + i, Pico.rom, 0x8000); |
449 | |
6a47c2d4 |
450 | // save EEPROM |
451 | eeprom_state = eeprom_spi_init(&eeprom_size); |
452 | SRam.flags = 0; |
453 | SRam.size = 0x10000; |
454 | SRam.data = calloc(1, SRam.size); |
455 | if (!SRam.data) |
456 | SRam.size = 0; |
457 | carthw_pier_state[2].ptr = eeprom_state; |
458 | carthw_pier_state[2].size = eeprom_size; |
459 | |
30f0fdd4 |
460 | PicoCartMemSetup = carthw_pier_mem_setup; |
461 | PicoResetHook = carthw_pier_reset; |
462 | PicoLoadStateHook = carthw_pier_statef; |
463 | carthw_chunks = carthw_pier_state; |
464 | } |
465 | |
000f5335 |
466 | /* Simple unlicensed ROM protection emulation */ |
467 | static struct { |
30f0fdd4 |
468 | u32 addr; |
469 | u32 mask; |
470 | u16 val; |
471 | u16 readonly; |
000f5335 |
472 | } *sprot_items; |
473 | static int sprot_item_alloc; |
474 | static int sprot_item_count; |
475 | |
476 | static u16 *carthw_sprot_get_val(u32 a, int rw_only) |
477 | { |
30f0fdd4 |
478 | int i; |
479 | |
480 | for (i = 0; i < sprot_item_count; i++) |
481 | if ((a & sprot_items[i].mask) == sprot_items[i].addr) |
482 | if (!rw_only || !sprot_items[i].readonly) |
483 | return &sprot_items[i].val; |
000f5335 |
484 | |
30f0fdd4 |
485 | return NULL; |
000f5335 |
486 | } |
487 | |
488 | static u32 PicoRead8_sprot(u32 a) |
489 | { |
490 | u16 *val; |
491 | u32 d; |
492 | |
493 | if (0xa10000 <= a && a < 0xa12000) |
494 | return PicoRead8_io(a); |
495 | |
496 | val = carthw_sprot_get_val(a, 0); |
497 | if (val != NULL) { |
498 | d = *val; |
499 | if (!(a & 1)) |
500 | d >>= 8; |
501 | elprintf(EL_UIO, "prot r8 [%06x] %02x @%06x", a, d, SekPc); |
502 | return d; |
503 | } |
504 | else { |
505 | elprintf(EL_UIO, "prot r8 [%06x] MISS @%06x", a, SekPc); |
506 | return 0; |
507 | } |
508 | } |
509 | |
510 | static u32 PicoRead16_sprot(u32 a) |
511 | { |
512 | u16 *val; |
513 | |
514 | if (0xa10000 <= a && a < 0xa12000) |
515 | return PicoRead16_io(a); |
516 | |
517 | val = carthw_sprot_get_val(a, 0); |
518 | if (val != NULL) { |
519 | elprintf(EL_UIO, "prot r16 [%06x] %04x @%06x", a, *val, SekPc); |
520 | return *val; |
521 | } |
522 | else { |
523 | elprintf(EL_UIO, "prot r16 [%06x] MISS @%06x", a, SekPc); |
524 | return 0; |
525 | } |
526 | } |
527 | |
528 | static void PicoWrite8_sprot(u32 a, u32 d) |
529 | { |
530 | u16 *val; |
531 | |
532 | if (0xa10000 <= a && a < 0xa12000) { |
533 | PicoWrite8_io(a, d); |
534 | return; |
535 | } |
536 | |
537 | val = carthw_sprot_get_val(a, 1); |
538 | if (val != NULL) { |
539 | if (a & 1) |
540 | *val = (*val & 0xff00) | (d | 0xff); |
541 | else |
542 | *val = (*val & 0x00ff) | (d << 8); |
543 | elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc); |
544 | } |
545 | else |
546 | elprintf(EL_UIO, "prot w8 [%06x] %02x MISS @%06x", a, d & 0xff, SekPc); |
547 | } |
548 | |
549 | static void PicoWrite16_sprot(u32 a, u32 d) |
550 | { |
551 | u16 *val; |
552 | |
553 | if (0xa10000 <= a && a < 0xa12000) { |
554 | PicoWrite16_io(a, d); |
555 | return; |
556 | } |
557 | |
558 | val = carthw_sprot_get_val(a, 1); |
559 | if (val != NULL) { |
560 | *val = d; |
561 | elprintf(EL_UIO, "prot w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc); |
562 | } |
563 | else |
564 | elprintf(EL_UIO, "prot w16 [%06x] %04x MISS @%06x", a, d & 0xffff, SekPc); |
565 | } |
566 | |
567 | void carthw_sprot_new_location(unsigned int a, unsigned int mask, unsigned short val, int is_ro) |
568 | { |
569 | if (sprot_items == NULL) { |
570 | sprot_items = calloc(8, sizeof(sprot_items[0])); |
571 | sprot_item_alloc = 8; |
572 | sprot_item_count = 0; |
573 | } |
574 | |
575 | if (sprot_item_count == sprot_item_alloc) { |
576 | void *tmp; |
577 | sprot_item_alloc *= 2; |
578 | tmp = realloc(sprot_items, sprot_item_alloc); |
579 | if (tmp == NULL) { |
580 | elprintf(EL_STATUS, "OOM"); |
581 | return; |
582 | } |
583 | sprot_items = tmp; |
584 | } |
585 | |
586 | sprot_items[sprot_item_count].addr = a; |
587 | sprot_items[sprot_item_count].mask = mask; |
588 | sprot_items[sprot_item_count].val = val; |
589 | sprot_items[sprot_item_count].readonly = is_ro; |
590 | sprot_item_count++; |
591 | } |
592 | |
593 | static void carthw_sprot_unload(void) |
594 | { |
595 | free(sprot_items); |
596 | sprot_items = NULL; |
597 | sprot_item_count = sprot_item_alloc = 0; |
598 | } |
599 | |
600 | static void carthw_sprot_mem_setup(void) |
601 | { |
602 | int start; |
603 | |
604 | // map ROM - 0x7fffff, /TIME areas (which are tipically used) |
605 | start = (Pico.romsize + M68K_BANK_MASK) & ~M68K_BANK_MASK; |
606 | cpu68k_map_set(m68k_read8_map, start, 0x7fffff, PicoRead8_sprot, 1); |
607 | cpu68k_map_set(m68k_read16_map, start, 0x7fffff, PicoRead16_sprot, 1); |
608 | cpu68k_map_set(m68k_write8_map, start, 0x7fffff, PicoWrite8_sprot, 1); |
609 | cpu68k_map_set(m68k_write16_map, start, 0x7fffff, PicoWrite16_sprot, 1); |
610 | |
611 | cpu68k_map_set(m68k_read8_map, 0xa10000, 0xa1ffff, PicoRead8_sprot, 1); |
612 | cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, PicoRead16_sprot, 1); |
613 | cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, PicoWrite8_sprot, 1); |
614 | cpu68k_map_set(m68k_write16_map, 0xa10000, 0xa1ffff, PicoWrite16_sprot, 1); |
615 | } |
616 | |
617 | void carthw_sprot_startup(void) |
618 | { |
619 | elprintf(EL_STATUS, "Prot emu startup"); |
620 | |
621 | PicoCartMemSetup = carthw_sprot_mem_setup; |
622 | PicoCartUnloadHook = carthw_sprot_unload; |
623 | } |
624 | |
625 | /* Protection emulation for Lion King 3. Credits go to Haze */ |
626 | static u8 prot_lk3_cmd, prot_lk3_data; |
627 | |
628 | static u32 PicoRead8_plk3(u32 a) |
629 | { |
630 | u32 d = 0; |
631 | switch (prot_lk3_cmd) { |
632 | case 1: d = prot_lk3_data >> 1; break; |
633 | case 2: // nibble rotate |
634 | d = ((prot_lk3_data >> 4) | (prot_lk3_data << 4)) & 0xff; |
635 | break; |
636 | case 3: // bit rotate |
637 | d = prot_lk3_data; |
638 | d = (d >> 4) | (d << 4); |
639 | d = ((d & 0xcc) >> 2) | ((d & 0x33) << 2); |
640 | d = ((d & 0xaa) >> 1) | ((d & 0x55) << 1); |
641 | break; |
642 | /* Top Fighter 2000 MK VIII (Unl) |
643 | case 0x98: d = 0x50; break; // prot_lk3_data == a8 here |
644 | case 0x67: d = 0xde; break; // prot_lk3_data == 7b here (rot!) |
645 | case 0xb5: d = 0x9f; break; // prot_lk3_data == 4a |
646 | */ |
647 | default: |
648 | elprintf(EL_UIO, "unhandled prot cmd %02x @%06x", prot_lk3_cmd, SekPc); |
649 | break; |
650 | } |
651 | |
652 | elprintf(EL_UIO, "prot r8 [%06x] %02x @%06x", a, d, SekPc); |
653 | return d; |
654 | } |
655 | |
656 | static void PicoWrite8_plk3p(u32 a, u32 d) |
657 | { |
658 | elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc); |
659 | if (a & 2) |
660 | prot_lk3_cmd = d; |
661 | else |
662 | prot_lk3_data = d; |
663 | } |
664 | |
665 | static void PicoWrite8_plk3b(u32 a, u32 d) |
666 | { |
667 | int addr; |
668 | |
669 | elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc); |
670 | addr = d << 15; |
671 | if (addr + 0x8000 > Pico.romsize) { |
672 | elprintf(EL_UIO|EL_ANOMALY, "prot_lk3: bank too large: %02x", d); |
673 | return; |
674 | } |
675 | if (addr == 0) |
676 | memcpy(Pico.rom, Pico.rom + Pico.romsize, 0x8000); |
677 | else |
678 | memcpy(Pico.rom, Pico.rom + addr, 0x8000); |
679 | } |
680 | |
681 | static void carthw_prot_lk3_mem_setup(void) |
682 | { |
683 | cpu68k_map_set(m68k_read8_map, 0x600000, 0x7fffff, PicoRead8_plk3, 1); |
684 | cpu68k_map_set(m68k_write8_map, 0x600000, 0x6fffff, PicoWrite8_plk3p, 1); |
685 | cpu68k_map_set(m68k_write8_map, 0x700000, 0x7fffff, PicoWrite8_plk3b, 1); |
686 | } |
687 | |
688 | void carthw_prot_lk3_startup(void) |
689 | { |
a736af3e |
690 | int ret; |
000f5335 |
691 | |
692 | elprintf(EL_STATUS, "lk3 prot emu startup"); |
693 | |
694 | // allocate space for bank0 backup |
a736af3e |
695 | ret = PicoCartResize(Pico.romsize + 0x8000); |
696 | if (ret != 0) { |
000f5335 |
697 | elprintf(EL_STATUS, "OOM"); |
698 | return; |
699 | } |
000f5335 |
700 | memcpy(Pico.rom + Pico.romsize, Pico.rom, 0x8000); |
701 | |
702 | PicoCartMemSetup = carthw_prot_lk3_mem_setup; |
703 | } |
704 | |
6a47c2d4 |
705 | // vim:ts=2:sw=2:expandtab |