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 | |
000f5335 |
14 | /* The SSFII mapper */ |
30f0fdd4 |
15 | static unsigned char ssf2_banks[8]; |
000f5335 |
16 | |
17 | static carthw_state_chunk carthw_ssf2_state[] = |
18 | { |
19 | { CHUNK_CARTHW, sizeof(ssf2_banks), &ssf2_banks }, |
20 | { 0, 0, NULL } |
21 | }; |
22 | |
23 | static void carthw_ssf2_write8(u32 a, u32 d) |
24 | { |
25 | u32 target, base; |
26 | |
27 | if ((a & 0xfffff0) != 0xa130f0) { |
28 | PicoWrite8_io(a, d); |
29 | return; |
30 | } |
31 | |
32 | a &= 0x0e; |
33 | if (a == 0) |
34 | return; |
35 | |
36 | ssf2_banks[a >> 1] = d; |
37 | base = d << 19; |
38 | target = a << 18; |
39 | if (base + 0x80000 > Pico.romsize) { |
40 | elprintf(EL_ANOMALY|EL_STATUS, "ssf2: missing bank @ %06x", base); |
41 | return; |
42 | } |
43 | |
44 | cpu68k_map_set(m68k_read8_map, target, target + 0x80000 - 1, Pico.rom + base, 0); |
45 | cpu68k_map_set(m68k_read16_map, target, target + 0x80000 - 1, Pico.rom + base, 0); |
46 | } |
47 | |
48 | static void carthw_ssf2_mem_setup(void) |
49 | { |
50 | cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_ssf2_write8, 1); |
51 | } |
52 | |
53 | static void carthw_ssf2_statef(void) |
54 | { |
55 | int i; |
56 | for (i = 1; i < 8; i++) |
57 | carthw_ssf2_write8(0xa130f0 | (i << 1), ssf2_banks[i]); |
58 | } |
59 | |
60 | void carthw_ssf2_startup(void) |
61 | { |
62 | int i; |
63 | |
64 | elprintf(EL_STATUS, "SSF2 mapper startup"); |
65 | |
66 | // default map |
67 | for (i = 0; i < 8; i++) |
68 | ssf2_banks[i] = i; |
69 | |
70 | PicoCartMemSetup = carthw_ssf2_mem_setup; |
71 | PicoLoadStateHook = carthw_ssf2_statef; |
72 | carthw_chunks = carthw_ssf2_state; |
73 | } |
74 | |
75 | |
45f2f245 |
76 | /* Common *-in-1 pirate mapper. |
77 | * Switches banks based on addr lines when /TIME is set. |
78 | * TODO: verify |
79 | */ |
80 | static unsigned int carthw_Xin1_baddr = 0; |
757f8dae |
81 | |
45f2f245 |
82 | static void carthw_Xin1_do(u32 a, int mask, int shift) |
757f8dae |
83 | { |
84 | int len; |
85 | |
45f2f245 |
86 | carthw_Xin1_baddr = a; |
87 | a &= mask; |
88 | a <<= shift; |
757f8dae |
89 | len = Pico.romsize - a; |
90 | if (len <= 0) { |
45f2f245 |
91 | elprintf(EL_ANOMALY|EL_STATUS, "X-in-1: missing bank @ %06x", a); |
757f8dae |
92 | return; |
93 | } |
94 | |
45f2f245 |
95 | len = (len + M68K_BANK_MASK) & ~M68K_BANK_MASK; |
96 | cpu68k_map_set(m68k_read8_map, 0x000000, len - 1, Pico.rom + a, 0); |
97 | cpu68k_map_set(m68k_read16_map, 0x000000, len - 1, Pico.rom + a, 0); |
757f8dae |
98 | } |
99 | |
45f2f245 |
100 | static carthw_state_chunk carthw_Xin1_state[] = |
757f8dae |
101 | { |
45f2f245 |
102 | { CHUNK_CARTHW, sizeof(carthw_Xin1_baddr), &carthw_Xin1_baddr }, |
103 | { 0, 0, NULL } |
104 | }; |
105 | |
106 | // TODO: test a0, reads, w16 |
107 | static void carthw_Xin1_write8(u32 a, u32 d) |
108 | { |
109 | if ((a & 0xffff00) != 0xa13000) { |
110 | PicoWrite8_io(a, d); |
111 | return; |
112 | } |
113 | |
114 | carthw_Xin1_do(a, 0x3f, 16); |
757f8dae |
115 | } |
116 | |
45f2f245 |
117 | static void carthw_Xin1_mem_setup(void) |
bdec53c9 |
118 | { |
45f2f245 |
119 | cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_Xin1_write8, 1); |
bdec53c9 |
120 | } |
121 | |
45f2f245 |
122 | static void carthw_Xin1_reset(void) |
757f8dae |
123 | { |
45f2f245 |
124 | carthw_Xin1_write8(0xa13000, 0); |
125 | } |
757f8dae |
126 | |
45f2f245 |
127 | static void carthw_Xin1_statef(void) |
128 | { |
129 | carthw_Xin1_write8(carthw_Xin1_baddr, 0); |
130 | } |
757f8dae |
131 | |
45f2f245 |
132 | void carthw_Xin1_startup(void) |
133 | { |
134 | elprintf(EL_STATUS, "X-in-1 mapper startup"); |
757f8dae |
135 | |
45f2f245 |
136 | PicoCartMemSetup = carthw_Xin1_mem_setup; |
137 | PicoResetHook = carthw_Xin1_reset; |
138 | PicoLoadStateHook = carthw_Xin1_statef; |
139 | carthw_chunks = carthw_Xin1_state; |
757f8dae |
140 | } |
141 | |
a12b1b29 |
142 | |
143 | /* Realtec, based on TascoDLX doc |
144 | * http://www.sharemation.com/TascoDLX/REALTEC%20Cart%20Mapper%20-%20description%20v1.txt |
145 | */ |
146 | static int realtec_bank = 0x80000000, realtec_size = 0x80000000; |
a12b1b29 |
147 | |
45f2f245 |
148 | static void carthw_realtec_write8(u32 a, u32 d) |
a12b1b29 |
149 | { |
150 | int i, bank_old = realtec_bank, size_old = realtec_size; |
151 | |
152 | if (a == 0x400000) |
153 | { |
154 | realtec_bank &= 0x0e0000; |
155 | realtec_bank |= 0x300000 & (d << 19); |
156 | if (realtec_bank != bank_old) |
157 | elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc); |
158 | } |
159 | else if (a == 0x402000) |
160 | { |
161 | realtec_size = (d << 17) & 0x3e0000; |
162 | if (realtec_size != size_old) |
163 | elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc); |
164 | } |
165 | else if (a == 0x404000) |
166 | { |
167 | realtec_bank &= 0x300000; |
168 | realtec_bank |= 0x0e0000 & (d << 17); |
169 | if (realtec_bank != bank_old) |
170 | elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc); |
171 | } |
172 | else |
173 | elprintf(EL_ANOMALY, "realtec: unexpected write [%06x] %02x @ %06x", a, d, SekPc); |
65ca3034 |
174 | |
a12b1b29 |
175 | if (realtec_bank >= 0 && realtec_size >= 0 && |
176 | (realtec_bank != bank_old || realtec_size != size_old)) |
177 | { |
178 | elprintf(EL_ANOMALY, "realtec: new bank %06x, size %06x", realtec_bank, realtec_size, SekPc); |
45f2f245 |
179 | if (realtec_size > Pico.romsize - realtec_bank) |
a12b1b29 |
180 | { |
181 | elprintf(EL_ANOMALY, "realtec: bank too large / out of range?"); |
182 | return; |
183 | } |
184 | |
45f2f245 |
185 | for (i = 0; i < 0x400000; i += realtec_size) { |
186 | cpu68k_map_set(m68k_read8_map, i, realtec_size - 1, Pico.rom + realtec_bank, 0); |
187 | cpu68k_map_set(m68k_read16_map, i, realtec_size - 1, Pico.rom + realtec_bank, 0); |
188 | } |
a12b1b29 |
189 | } |
190 | } |
191 | |
0b35350d |
192 | static void carthw_realtec_reset(void) |
a12b1b29 |
193 | { |
194 | int i; |
45f2f245 |
195 | |
a12b1b29 |
196 | /* map boot code */ |
45f2f245 |
197 | for (i = 0; i < 0x400000; i += M68K_BANK_SIZE) { |
198 | cpu68k_map_set(m68k_read8_map, i, i + M68K_BANK_SIZE - 1, Pico.rom + Pico.romsize, 0); |
199 | cpu68k_map_set(m68k_read16_map, i, i + M68K_BANK_SIZE - 1, Pico.rom + Pico.romsize, 0); |
200 | } |
201 | cpu68k_map_set(m68k_write8_map, 0x400000, 0x400000 + M68K_BANK_SIZE - 1, carthw_realtec_write8, 1); |
a12b1b29 |
202 | realtec_bank = realtec_size = 0x80000000; |
203 | } |
204 | |
205 | void carthw_realtec_startup(void) |
206 | { |
45f2f245 |
207 | int i; |
a12b1b29 |
208 | |
45f2f245 |
209 | elprintf(EL_STATUS, "Realtec mapper startup"); |
a12b1b29 |
210 | |
45f2f245 |
211 | // allocate additional bank for boot code |
212 | // (we know those ROMs have aligned size) |
a736af3e |
213 | i = PicoCartResize(Pico.romsize + M68K_BANK_SIZE); |
214 | if (i != 0) { |
a12b1b29 |
215 | elprintf(EL_STATUS, "OOM"); |
216 | return; |
217 | } |
a12b1b29 |
218 | |
45f2f245 |
219 | // create bank for boot code |
220 | for (i = 0; i < M68K_BANK_SIZE; i += 0x2000) |
221 | memcpy(Pico.rom + Pico.romsize + i, Pico.rom + Pico.romsize - 0x2000, 0x2000); |
222 | |
a12b1b29 |
223 | PicoResetHook = carthw_realtec_reset; |
224 | } |
225 | |
0b35350d |
226 | /* Radica mapper, based on DevSter's info |
227 | * http://devster.monkeeh.com/sega/radica/ |
45f2f245 |
228 | * XXX: mostly the same as X-in-1, merge? |
0b35350d |
229 | */ |
45f2f245 |
230 | static u32 carthw_radica_read16(u32 a) |
0b35350d |
231 | { |
45f2f245 |
232 | if ((a & 0xffff00) != 0xa13000) |
233 | return PicoRead16_io(a); |
0b35350d |
234 | |
45f2f245 |
235 | carthw_Xin1_do(a, 0x7e, 15); |
0b35350d |
236 | |
237 | return 0; |
238 | } |
239 | |
45f2f245 |
240 | static void carthw_radica_mem_setup(void) |
241 | { |
242 | cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, carthw_radica_read16, 1); |
243 | } |
244 | |
0b35350d |
245 | static void carthw_radica_statef(void) |
246 | { |
45f2f245 |
247 | carthw_radica_read16(carthw_Xin1_baddr); |
0b35350d |
248 | } |
249 | |
250 | static void carthw_radica_reset(void) |
251 | { |
45f2f245 |
252 | carthw_radica_read16(0xa13000); |
0b35350d |
253 | } |
254 | |
255 | void carthw_radica_startup(void) |
256 | { |
45f2f245 |
257 | elprintf(EL_STATUS, "Radica mapper startup"); |
0b35350d |
258 | |
45f2f245 |
259 | PicoCartMemSetup = carthw_radica_mem_setup; |
260 | PicoResetHook = carthw_radica_reset; |
0b35350d |
261 | PicoLoadStateHook = carthw_radica_statef; |
45f2f245 |
262 | carthw_chunks = carthw_Xin1_state; |
0b35350d |
263 | } |
264 | |
30f0fdd4 |
265 | |
266 | /* Pier Solar. Based on my own research */ |
267 | static unsigned char pier_regs[8]; |
268 | static unsigned char pier_dump_prot; |
269 | |
270 | static carthw_state_chunk carthw_pier_state[] = |
271 | { |
272 | { CHUNK_CARTHW, sizeof(pier_regs), pier_regs }, |
273 | { CHUNK_CARTHW + 1, sizeof(pier_dump_prot), &pier_dump_prot }, |
6a47c2d4 |
274 | { CHUNK_CARTHW + 2, 0, NULL }, // filled later |
30f0fdd4 |
275 | { 0, 0, NULL } |
276 | }; |
277 | |
278 | static void carthw_pier_write8(u32 a, u32 d) |
279 | { |
280 | u32 a8, target, base; |
281 | |
282 | if ((a & 0xffff00) != 0xa13000) { |
283 | PicoWrite8_io(a, d); |
284 | return; |
285 | } |
286 | |
287 | a8 = a & 0x0f; |
288 | pier_regs[a8 / 2] = d; |
289 | |
290 | elprintf(EL_UIO, "pier w8 [%06x] %02x @%06x", a, d & 0xffff, SekPc); |
291 | switch (a8) { |
292 | case 0x01: |
293 | break; |
294 | case 0x03: |
295 | if (!(pier_regs[0] & 2)) |
296 | goto unmapped; |
297 | target = 0x280000; |
298 | base = d << 19; |
299 | goto do_map; |
300 | case 0x05: |
301 | if (!(pier_regs[0] & 2)) |
302 | goto unmapped; |
303 | target = 0x300000; |
304 | base = d << 19; |
305 | goto do_map; |
306 | case 0x07: |
307 | if (!(pier_regs[0] & 2)) |
308 | goto unmapped; |
309 | target = 0x380000; |
310 | base = d << 19; |
311 | goto do_map; |
312 | case 0x09: |
6a47c2d4 |
313 | SRam.changed = 1; |
314 | eeprom_spi_write(d); |
30f0fdd4 |
315 | break; |
316 | case 0x0b: |
317 | // eeprom read |
318 | default: |
319 | unmapped: |
320 | //elprintf(EL_UIO, "pier w8 [%06x] %02x @%06x", a, d & 0xffff, SekPc); |
321 | elprintf(EL_STATUS, "-- unmapped w8 [%06x] %02x @%06x", a, d & 0xffff, SekPc); |
322 | break; |
323 | } |
324 | return; |
325 | |
326 | do_map: |
327 | if (base + 0x80000 > Pico.romsize) { |
328 | elprintf(EL_ANOMALY|EL_STATUS, "pier: missing bank @ %06x", base); |
329 | return; |
330 | } |
331 | cpu68k_map_set(m68k_read8_map, target, target + 0x80000 - 1, Pico.rom + base, 0); |
332 | cpu68k_map_set(m68k_read16_map, target, target + 0x80000 - 1, Pico.rom + base, 0); |
333 | } |
334 | |
335 | static void carthw_pier_write16(u32 a, u32 d) |
336 | { |
337 | if ((a & 0xffff00) != 0xa13000) { |
338 | PicoWrite16_io(a, d); |
339 | return; |
340 | } |
341 | |
342 | elprintf(EL_UIO, "pier w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc); |
343 | carthw_pier_write8(a + 1, d); |
344 | } |
345 | |
346 | static u32 carthw_pier_read8(u32 a) |
347 | { |
348 | if ((a & 0xffff00) != 0xa13000) |
349 | return PicoRead8_io(a); |
350 | |
351 | if (a == 0xa1300b) |
6a47c2d4 |
352 | return eeprom_spi_read(a); |
30f0fdd4 |
353 | |
354 | elprintf(EL_UIO, "pier r8 [%06x] @%06x", a, SekPc); |
355 | return 0; |
356 | } |
357 | |
358 | static void carthw_pier_statef(void); |
359 | |
360 | static u32 carthw_pier_prot_read8(u32 a) |
361 | { |
362 | /* it takes more than just these reads here to disable ROM protection, |
363 | * but for game emulation purposes this is enough. */ |
364 | if (pier_dump_prot > 0) |
365 | pier_dump_prot--; |
366 | if (pier_dump_prot == 0) { |
367 | carthw_pier_statef(); |
368 | elprintf(EL_STATUS, "prot off on r8 @%06x", SekPc); |
369 | } |
370 | elprintf(EL_UIO, "pier r8 [%06x] @%06x", a, SekPc); |
371 | |
372 | return Pico.rom[(a & 0x7fff) ^ 1]; |
373 | } |
374 | |
375 | static void carthw_pier_mem_setup(void) |
376 | { |
377 | cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_pier_write8, 1); |
378 | cpu68k_map_set(m68k_write16_map, 0xa10000, 0xa1ffff, carthw_pier_write16, 1); |
379 | cpu68k_map_set(m68k_read8_map, 0xa10000, 0xa1ffff, carthw_pier_read8, 1); |
380 | } |
381 | |
382 | static void carthw_pier_prot_mem_setup(int prot_enable) |
383 | { |
384 | if (prot_enable) { |
385 | /* the dump protection.. */ |
386 | int a; |
387 | for (a = 0x000000; a < 0x400000; a += M68K_BANK_SIZE) { |
388 | cpu68k_map_set(m68k_read8_map, a, a + 0xffff, Pico.rom + Pico.romsize, 0); |
389 | cpu68k_map_set(m68k_read16_map, a, a + 0xffff, Pico.rom + Pico.romsize, 0); |
390 | } |
391 | cpu68k_map_set(m68k_read8_map, M68K_BANK_SIZE, M68K_BANK_SIZE * 2 - 1, |
392 | carthw_pier_prot_read8, 1); |
393 | } |
394 | else { |
395 | cpu68k_map_set(m68k_read8_map, 0, 0x27ffff, Pico.rom, 0); |
396 | cpu68k_map_set(m68k_read16_map, 0, 0x27ffff, Pico.rom, 0); |
397 | } |
398 | } |
399 | |
400 | static void carthw_pier_statef(void) |
401 | { |
402 | carthw_pier_prot_mem_setup(pier_dump_prot); |
403 | |
404 | if (!pier_dump_prot) { |
405 | /* setup all banks */ |
406 | u32 r0 = pier_regs[0]; |
407 | carthw_pier_write8(0xa13001, 3); |
408 | carthw_pier_write8(0xa13003, pier_regs[1]); |
409 | carthw_pier_write8(0xa13005, pier_regs[2]); |
410 | carthw_pier_write8(0xa13007, pier_regs[3]); |
411 | carthw_pier_write8(0xa13001, r0); |
412 | } |
413 | } |
414 | |
415 | static void carthw_pier_reset(void) |
416 | { |
417 | pier_regs[0] = 1; |
418 | pier_regs[1] = pier_regs[2] = pier_regs[3] = 0; |
419 | pier_dump_prot = 3; |
420 | carthw_pier_statef(); |
6a47c2d4 |
421 | eeprom_spi_init(NULL); |
30f0fdd4 |
422 | } |
423 | |
424 | void carthw_pier_startup(void) |
425 | { |
6a47c2d4 |
426 | void *eeprom_state; |
427 | int eeprom_size = 0; |
30f0fdd4 |
428 | int i; |
429 | |
430 | elprintf(EL_STATUS, "Pier Solar mapper startup"); |
431 | |
432 | // mostly same as for realtec.. |
433 | i = PicoCartResize(Pico.romsize + M68K_BANK_SIZE); |
434 | if (i != 0) { |
435 | elprintf(EL_STATUS, "OOM"); |
436 | return; |
437 | } |
438 | |
439 | // create dump protection bank |
440 | for (i = 0; i < M68K_BANK_SIZE; i += 0x8000) |
441 | memcpy(Pico.rom + Pico.romsize + i, Pico.rom, 0x8000); |
442 | |
6a47c2d4 |
443 | // save EEPROM |
444 | eeprom_state = eeprom_spi_init(&eeprom_size); |
445 | SRam.flags = 0; |
446 | SRam.size = 0x10000; |
447 | SRam.data = calloc(1, SRam.size); |
448 | if (!SRam.data) |
449 | SRam.size = 0; |
450 | carthw_pier_state[2].ptr = eeprom_state; |
451 | carthw_pier_state[2].size = eeprom_size; |
452 | |
30f0fdd4 |
453 | PicoCartMemSetup = carthw_pier_mem_setup; |
454 | PicoResetHook = carthw_pier_reset; |
455 | PicoLoadStateHook = carthw_pier_statef; |
456 | carthw_chunks = carthw_pier_state; |
457 | } |
458 | |
000f5335 |
459 | /* Simple unlicensed ROM protection emulation */ |
460 | static struct { |
30f0fdd4 |
461 | u32 addr; |
462 | u32 mask; |
463 | u16 val; |
464 | u16 readonly; |
000f5335 |
465 | } *sprot_items; |
466 | static int sprot_item_alloc; |
467 | static int sprot_item_count; |
468 | |
469 | static u16 *carthw_sprot_get_val(u32 a, int rw_only) |
470 | { |
30f0fdd4 |
471 | int i; |
472 | |
473 | for (i = 0; i < sprot_item_count; i++) |
474 | if ((a & sprot_items[i].mask) == sprot_items[i].addr) |
475 | if (!rw_only || !sprot_items[i].readonly) |
476 | return &sprot_items[i].val; |
000f5335 |
477 | |
30f0fdd4 |
478 | return NULL; |
000f5335 |
479 | } |
480 | |
481 | static u32 PicoRead8_sprot(u32 a) |
482 | { |
483 | u16 *val; |
484 | u32 d; |
485 | |
486 | if (0xa10000 <= a && a < 0xa12000) |
487 | return PicoRead8_io(a); |
488 | |
489 | val = carthw_sprot_get_val(a, 0); |
490 | if (val != NULL) { |
491 | d = *val; |
492 | if (!(a & 1)) |
493 | d >>= 8; |
494 | elprintf(EL_UIO, "prot r8 [%06x] %02x @%06x", a, d, SekPc); |
495 | return d; |
496 | } |
497 | else { |
498 | elprintf(EL_UIO, "prot r8 [%06x] MISS @%06x", a, SekPc); |
499 | return 0; |
500 | } |
501 | } |
502 | |
503 | static u32 PicoRead16_sprot(u32 a) |
504 | { |
505 | u16 *val; |
506 | |
507 | if (0xa10000 <= a && a < 0xa12000) |
508 | return PicoRead16_io(a); |
509 | |
510 | val = carthw_sprot_get_val(a, 0); |
511 | if (val != NULL) { |
512 | elprintf(EL_UIO, "prot r16 [%06x] %04x @%06x", a, *val, SekPc); |
513 | return *val; |
514 | } |
515 | else { |
516 | elprintf(EL_UIO, "prot r16 [%06x] MISS @%06x", a, SekPc); |
517 | return 0; |
518 | } |
519 | } |
520 | |
521 | static void PicoWrite8_sprot(u32 a, u32 d) |
522 | { |
523 | u16 *val; |
524 | |
525 | if (0xa10000 <= a && a < 0xa12000) { |
526 | PicoWrite8_io(a, d); |
527 | return; |
528 | } |
529 | |
530 | val = carthw_sprot_get_val(a, 1); |
531 | if (val != NULL) { |
532 | if (a & 1) |
533 | *val = (*val & 0xff00) | (d | 0xff); |
534 | else |
535 | *val = (*val & 0x00ff) | (d << 8); |
536 | elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc); |
537 | } |
538 | else |
539 | elprintf(EL_UIO, "prot w8 [%06x] %02x MISS @%06x", a, d & 0xff, SekPc); |
540 | } |
541 | |
542 | static void PicoWrite16_sprot(u32 a, u32 d) |
543 | { |
544 | u16 *val; |
545 | |
546 | if (0xa10000 <= a && a < 0xa12000) { |
547 | PicoWrite16_io(a, d); |
548 | return; |
549 | } |
550 | |
551 | val = carthw_sprot_get_val(a, 1); |
552 | if (val != NULL) { |
553 | *val = d; |
554 | elprintf(EL_UIO, "prot w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc); |
555 | } |
556 | else |
557 | elprintf(EL_UIO, "prot w16 [%06x] %04x MISS @%06x", a, d & 0xffff, SekPc); |
558 | } |
559 | |
560 | void carthw_sprot_new_location(unsigned int a, unsigned int mask, unsigned short val, int is_ro) |
561 | { |
562 | if (sprot_items == NULL) { |
563 | sprot_items = calloc(8, sizeof(sprot_items[0])); |
564 | sprot_item_alloc = 8; |
565 | sprot_item_count = 0; |
566 | } |
567 | |
568 | if (sprot_item_count == sprot_item_alloc) { |
569 | void *tmp; |
570 | sprot_item_alloc *= 2; |
571 | tmp = realloc(sprot_items, sprot_item_alloc); |
572 | if (tmp == NULL) { |
573 | elprintf(EL_STATUS, "OOM"); |
574 | return; |
575 | } |
576 | sprot_items = tmp; |
577 | } |
578 | |
579 | sprot_items[sprot_item_count].addr = a; |
580 | sprot_items[sprot_item_count].mask = mask; |
581 | sprot_items[sprot_item_count].val = val; |
582 | sprot_items[sprot_item_count].readonly = is_ro; |
583 | sprot_item_count++; |
584 | } |
585 | |
586 | static void carthw_sprot_unload(void) |
587 | { |
588 | free(sprot_items); |
589 | sprot_items = NULL; |
590 | sprot_item_count = sprot_item_alloc = 0; |
591 | } |
592 | |
593 | static void carthw_sprot_mem_setup(void) |
594 | { |
595 | int start; |
596 | |
597 | // map ROM - 0x7fffff, /TIME areas (which are tipically used) |
598 | start = (Pico.romsize + M68K_BANK_MASK) & ~M68K_BANK_MASK; |
599 | cpu68k_map_set(m68k_read8_map, start, 0x7fffff, PicoRead8_sprot, 1); |
600 | cpu68k_map_set(m68k_read16_map, start, 0x7fffff, PicoRead16_sprot, 1); |
601 | cpu68k_map_set(m68k_write8_map, start, 0x7fffff, PicoWrite8_sprot, 1); |
602 | cpu68k_map_set(m68k_write16_map, start, 0x7fffff, PicoWrite16_sprot, 1); |
603 | |
604 | cpu68k_map_set(m68k_read8_map, 0xa10000, 0xa1ffff, PicoRead8_sprot, 1); |
605 | cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, PicoRead16_sprot, 1); |
606 | cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, PicoWrite8_sprot, 1); |
607 | cpu68k_map_set(m68k_write16_map, 0xa10000, 0xa1ffff, PicoWrite16_sprot, 1); |
608 | } |
609 | |
610 | void carthw_sprot_startup(void) |
611 | { |
612 | elprintf(EL_STATUS, "Prot emu startup"); |
613 | |
614 | PicoCartMemSetup = carthw_sprot_mem_setup; |
615 | PicoCartUnloadHook = carthw_sprot_unload; |
616 | } |
617 | |
618 | /* Protection emulation for Lion King 3. Credits go to Haze */ |
619 | static u8 prot_lk3_cmd, prot_lk3_data; |
620 | |
621 | static u32 PicoRead8_plk3(u32 a) |
622 | { |
623 | u32 d = 0; |
624 | switch (prot_lk3_cmd) { |
625 | case 1: d = prot_lk3_data >> 1; break; |
626 | case 2: // nibble rotate |
627 | d = ((prot_lk3_data >> 4) | (prot_lk3_data << 4)) & 0xff; |
628 | break; |
629 | case 3: // bit rotate |
630 | d = prot_lk3_data; |
631 | d = (d >> 4) | (d << 4); |
632 | d = ((d & 0xcc) >> 2) | ((d & 0x33) << 2); |
633 | d = ((d & 0xaa) >> 1) | ((d & 0x55) << 1); |
634 | break; |
635 | /* Top Fighter 2000 MK VIII (Unl) |
636 | case 0x98: d = 0x50; break; // prot_lk3_data == a8 here |
637 | case 0x67: d = 0xde; break; // prot_lk3_data == 7b here (rot!) |
638 | case 0xb5: d = 0x9f; break; // prot_lk3_data == 4a |
639 | */ |
640 | default: |
641 | elprintf(EL_UIO, "unhandled prot cmd %02x @%06x", prot_lk3_cmd, SekPc); |
642 | break; |
643 | } |
644 | |
645 | elprintf(EL_UIO, "prot r8 [%06x] %02x @%06x", a, d, SekPc); |
646 | return d; |
647 | } |
648 | |
649 | static void PicoWrite8_plk3p(u32 a, u32 d) |
650 | { |
651 | elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc); |
652 | if (a & 2) |
653 | prot_lk3_cmd = d; |
654 | else |
655 | prot_lk3_data = d; |
656 | } |
657 | |
658 | static void PicoWrite8_plk3b(u32 a, u32 d) |
659 | { |
660 | int addr; |
661 | |
662 | elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc); |
663 | addr = d << 15; |
664 | if (addr + 0x8000 > Pico.romsize) { |
665 | elprintf(EL_UIO|EL_ANOMALY, "prot_lk3: bank too large: %02x", d); |
666 | return; |
667 | } |
668 | if (addr == 0) |
669 | memcpy(Pico.rom, Pico.rom + Pico.romsize, 0x8000); |
670 | else |
671 | memcpy(Pico.rom, Pico.rom + addr, 0x8000); |
672 | } |
673 | |
674 | static void carthw_prot_lk3_mem_setup(void) |
675 | { |
676 | cpu68k_map_set(m68k_read8_map, 0x600000, 0x7fffff, PicoRead8_plk3, 1); |
677 | cpu68k_map_set(m68k_write8_map, 0x600000, 0x6fffff, PicoWrite8_plk3p, 1); |
678 | cpu68k_map_set(m68k_write8_map, 0x700000, 0x7fffff, PicoWrite8_plk3b, 1); |
679 | } |
680 | |
681 | void carthw_prot_lk3_startup(void) |
682 | { |
a736af3e |
683 | int ret; |
000f5335 |
684 | |
685 | elprintf(EL_STATUS, "lk3 prot emu startup"); |
686 | |
687 | // allocate space for bank0 backup |
a736af3e |
688 | ret = PicoCartResize(Pico.romsize + 0x8000); |
689 | if (ret != 0) { |
000f5335 |
690 | elprintf(EL_STATUS, "OOM"); |
691 | return; |
692 | } |
000f5335 |
693 | memcpy(Pico.rom + Pico.romsize, Pico.rom, 0x8000); |
694 | |
695 | PicoCartMemSetup = carthw_prot_lk3_mem_setup; |
696 | } |
697 | |
6a47c2d4 |
698 | // vim:ts=2:sw=2:expandtab |