| 1 | /* |
| 2 | * Support for a few cart mappers and some protection. |
| 3 | * (C) notaz, 2008-2011 |
| 4 | * |
| 5 | * This work is licensed under the terms of MAME license. |
| 6 | * See COPYING file in the top-level directory. |
| 7 | */ |
| 8 | |
| 9 | #include "../pico_int.h" |
| 10 | #include "../memory.h" |
| 11 | #include "eeprom_spi.h" |
| 12 | |
| 13 | |
| 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 | |
| 24 | /* The SSFII mapper */ |
| 25 | static unsigned char ssf2_banks[8]; |
| 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; |
| 49 | if (!have_bank(base)) |
| 50 | return; |
| 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 | |
| 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; |
| 89 | |
| 90 | static void carthw_Xin1_do(u32 a, int mask, int shift) |
| 91 | { |
| 92 | int len; |
| 93 | |
| 94 | carthw_Xin1_baddr = a; |
| 95 | a &= mask; |
| 96 | a <<= shift; |
| 97 | len = Pico.romsize - a; |
| 98 | if (len <= 0) { |
| 99 | elprintf(EL_ANOMALY|EL_STATUS, "X-in-1: missing bank @ %06x", a); |
| 100 | return; |
| 101 | } |
| 102 | |
| 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); |
| 106 | } |
| 107 | |
| 108 | static carthw_state_chunk carthw_Xin1_state[] = |
| 109 | { |
| 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); |
| 123 | } |
| 124 | |
| 125 | static void carthw_Xin1_mem_setup(void) |
| 126 | { |
| 127 | cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_Xin1_write8, 1); |
| 128 | } |
| 129 | |
| 130 | static void carthw_Xin1_reset(void) |
| 131 | { |
| 132 | carthw_Xin1_write8(0xa13000, 0); |
| 133 | } |
| 134 | |
| 135 | static void carthw_Xin1_statef(void) |
| 136 | { |
| 137 | carthw_Xin1_write8(carthw_Xin1_baddr, 0); |
| 138 | } |
| 139 | |
| 140 | void carthw_Xin1_startup(void) |
| 141 | { |
| 142 | elprintf(EL_STATUS, "X-in-1 mapper startup"); |
| 143 | |
| 144 | PicoCartMemSetup = carthw_Xin1_mem_setup; |
| 145 | PicoResetHook = carthw_Xin1_reset; |
| 146 | PicoLoadStateHook = carthw_Xin1_statef; |
| 147 | carthw_chunks = carthw_Xin1_state; |
| 148 | } |
| 149 | |
| 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; |
| 155 | |
| 156 | static void carthw_realtec_write8(u32 a, u32 d) |
| 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); |
| 182 | |
| 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); |
| 187 | if (realtec_size > Pico.romsize - realtec_bank) |
| 188 | { |
| 189 | elprintf(EL_ANOMALY, "realtec: bank too large / out of range?"); |
| 190 | return; |
| 191 | } |
| 192 | |
| 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 | } |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | static void carthw_realtec_reset(void) |
| 201 | { |
| 202 | int i; |
| 203 | |
| 204 | /* map boot code */ |
| 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); |
| 210 | realtec_bank = realtec_size = 0x80000000; |
| 211 | } |
| 212 | |
| 213 | void carthw_realtec_startup(void) |
| 214 | { |
| 215 | int i; |
| 216 | |
| 217 | elprintf(EL_STATUS, "Realtec mapper startup"); |
| 218 | |
| 219 | // allocate additional bank for boot code |
| 220 | // (we know those ROMs have aligned size) |
| 221 | i = PicoCartResize(Pico.romsize + M68K_BANK_SIZE); |
| 222 | if (i != 0) { |
| 223 | elprintf(EL_STATUS, "OOM"); |
| 224 | return; |
| 225 | } |
| 226 | |
| 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 | |
| 231 | PicoResetHook = carthw_realtec_reset; |
| 232 | } |
| 233 | |
| 234 | /* Radica mapper, based on DevSter's info |
| 235 | * http://devster.monkeeh.com/sega/radica/ |
| 236 | * XXX: mostly the same as X-in-1, merge? |
| 237 | */ |
| 238 | static u32 carthw_radica_read16(u32 a) |
| 239 | { |
| 240 | if ((a & 0xffff00) != 0xa13000) |
| 241 | return PicoRead16_io(a); |
| 242 | |
| 243 | carthw_Xin1_do(a, 0x7e, 15); |
| 244 | |
| 245 | return 0; |
| 246 | } |
| 247 | |
| 248 | static void carthw_radica_mem_setup(void) |
| 249 | { |
| 250 | cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, carthw_radica_read16, 1); |
| 251 | } |
| 252 | |
| 253 | static void carthw_radica_statef(void) |
| 254 | { |
| 255 | carthw_radica_read16(carthw_Xin1_baddr); |
| 256 | } |
| 257 | |
| 258 | static void carthw_radica_reset(void) |
| 259 | { |
| 260 | carthw_radica_read16(0xa13000); |
| 261 | } |
| 262 | |
| 263 | void carthw_radica_startup(void) |
| 264 | { |
| 265 | elprintf(EL_STATUS, "Radica mapper startup"); |
| 266 | |
| 267 | PicoCartMemSetup = carthw_radica_mem_setup; |
| 268 | PicoResetHook = carthw_radica_reset; |
| 269 | PicoLoadStateHook = carthw_radica_statef; |
| 270 | carthw_chunks = carthw_Xin1_state; |
| 271 | } |
| 272 | |
| 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 }, |
| 282 | { CHUNK_CARTHW + 2, 0, NULL }, // filled later |
| 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: |
| 321 | Pico.sv.changed = 1; |
| 322 | eeprom_spi_write(d); |
| 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: |
| 335 | if (!have_bank(base)) |
| 336 | return; |
| 337 | |
| 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) |
| 359 | return eeprom_spi_read(a); |
| 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 | carthw_pier_statef(); |
| 427 | eeprom_spi_init(NULL); |
| 428 | } |
| 429 | |
| 430 | void carthw_pier_startup(void) |
| 431 | { |
| 432 | void *eeprom_state; |
| 433 | int eeprom_size = 0; |
| 434 | int i; |
| 435 | |
| 436 | elprintf(EL_STATUS, "Pier Solar mapper startup"); |
| 437 | |
| 438 | // mostly same as for realtec.. |
| 439 | i = PicoCartResize(Pico.romsize + M68K_BANK_SIZE); |
| 440 | if (i != 0) { |
| 441 | elprintf(EL_STATUS, "OOM"); |
| 442 | return; |
| 443 | } |
| 444 | |
| 445 | pier_dump_prot = 3; |
| 446 | |
| 447 | // create dump protection bank |
| 448 | for (i = 0; i < M68K_BANK_SIZE; i += 0x8000) |
| 449 | memcpy(Pico.rom + Pico.romsize + i, Pico.rom, 0x8000); |
| 450 | |
| 451 | // save EEPROM |
| 452 | eeprom_state = eeprom_spi_init(&eeprom_size); |
| 453 | Pico.sv.flags = 0; |
| 454 | Pico.sv.size = 0x10000; |
| 455 | Pico.sv.data = calloc(1, Pico.sv.size); |
| 456 | if (!Pico.sv.data) |
| 457 | Pico.sv.size = 0; |
| 458 | carthw_pier_state[2].ptr = eeprom_state; |
| 459 | carthw_pier_state[2].size = eeprom_size; |
| 460 | |
| 461 | PicoCartMemSetup = carthw_pier_mem_setup; |
| 462 | PicoResetHook = carthw_pier_reset; |
| 463 | PicoLoadStateHook = carthw_pier_statef; |
| 464 | carthw_chunks = carthw_pier_state; |
| 465 | } |
| 466 | |
| 467 | /* Simple unlicensed ROM protection emulation */ |
| 468 | static struct { |
| 469 | u32 addr; |
| 470 | u32 mask; |
| 471 | u16 val; |
| 472 | u16 readonly; |
| 473 | } *sprot_items; |
| 474 | static int sprot_item_alloc; |
| 475 | static int sprot_item_count; |
| 476 | |
| 477 | static u16 *carthw_sprot_get_val(u32 a, int rw_only) |
| 478 | { |
| 479 | int i; |
| 480 | |
| 481 | for (i = 0; i < sprot_item_count; i++) |
| 482 | if ((a & sprot_items[i].mask) == sprot_items[i].addr) |
| 483 | if (!rw_only || !sprot_items[i].readonly) |
| 484 | return &sprot_items[i].val; |
| 485 | |
| 486 | return NULL; |
| 487 | } |
| 488 | |
| 489 | static u32 PicoRead8_sprot(u32 a) |
| 490 | { |
| 491 | u16 *val; |
| 492 | u32 d; |
| 493 | |
| 494 | if (0xa10000 <= a && a < 0xa12000) |
| 495 | return PicoRead8_io(a); |
| 496 | |
| 497 | val = carthw_sprot_get_val(a, 0); |
| 498 | if (val != NULL) { |
| 499 | d = *val; |
| 500 | if (!(a & 1)) |
| 501 | d >>= 8; |
| 502 | elprintf(EL_UIO, "prot r8 [%06x] %02x @%06x", a, d, SekPc); |
| 503 | return d; |
| 504 | } |
| 505 | else { |
| 506 | elprintf(EL_UIO, "prot r8 [%06x] MISS @%06x", a, SekPc); |
| 507 | return 0; |
| 508 | } |
| 509 | } |
| 510 | |
| 511 | static u32 PicoRead16_sprot(u32 a) |
| 512 | { |
| 513 | u16 *val; |
| 514 | |
| 515 | if (0xa10000 <= a && a < 0xa12000) |
| 516 | return PicoRead16_io(a); |
| 517 | |
| 518 | val = carthw_sprot_get_val(a, 0); |
| 519 | if (val != NULL) { |
| 520 | elprintf(EL_UIO, "prot r16 [%06x] %04x @%06x", a, *val, SekPc); |
| 521 | return *val; |
| 522 | } |
| 523 | else { |
| 524 | elprintf(EL_UIO, "prot r16 [%06x] MISS @%06x", a, SekPc); |
| 525 | return 0; |
| 526 | } |
| 527 | } |
| 528 | |
| 529 | static void PicoWrite8_sprot(u32 a, u32 d) |
| 530 | { |
| 531 | u16 *val; |
| 532 | |
| 533 | if (0xa10000 <= a && a < 0xa12000) { |
| 534 | PicoWrite8_io(a, d); |
| 535 | return; |
| 536 | } |
| 537 | |
| 538 | val = carthw_sprot_get_val(a, 1); |
| 539 | if (val != NULL) { |
| 540 | if (a & 1) |
| 541 | *val = (*val & 0xff00) | (d | 0xff); |
| 542 | else |
| 543 | *val = (*val & 0x00ff) | (d << 8); |
| 544 | elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc); |
| 545 | } |
| 546 | else |
| 547 | elprintf(EL_UIO, "prot w8 [%06x] %02x MISS @%06x", a, d & 0xff, SekPc); |
| 548 | } |
| 549 | |
| 550 | static void PicoWrite16_sprot(u32 a, u32 d) |
| 551 | { |
| 552 | u16 *val; |
| 553 | |
| 554 | if (0xa10000 <= a && a < 0xa12000) { |
| 555 | PicoWrite16_io(a, d); |
| 556 | return; |
| 557 | } |
| 558 | |
| 559 | val = carthw_sprot_get_val(a, 1); |
| 560 | if (val != NULL) { |
| 561 | *val = d; |
| 562 | elprintf(EL_UIO, "prot w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc); |
| 563 | } |
| 564 | else |
| 565 | elprintf(EL_UIO, "prot w16 [%06x] %04x MISS @%06x", a, d & 0xffff, SekPc); |
| 566 | } |
| 567 | |
| 568 | void carthw_sprot_new_location(unsigned int a, unsigned int mask, unsigned short val, int is_ro) |
| 569 | { |
| 570 | if (sprot_items == NULL) { |
| 571 | sprot_items = calloc(8, sizeof(sprot_items[0])); |
| 572 | sprot_item_alloc = 8; |
| 573 | sprot_item_count = 0; |
| 574 | } |
| 575 | |
| 576 | if (sprot_item_count == sprot_item_alloc) { |
| 577 | void *tmp; |
| 578 | sprot_item_alloc *= 2; |
| 579 | tmp = realloc(sprot_items, sprot_item_alloc); |
| 580 | if (tmp == NULL) { |
| 581 | elprintf(EL_STATUS, "OOM"); |
| 582 | return; |
| 583 | } |
| 584 | sprot_items = tmp; |
| 585 | } |
| 586 | |
| 587 | sprot_items[sprot_item_count].addr = a; |
| 588 | sprot_items[sprot_item_count].mask = mask; |
| 589 | sprot_items[sprot_item_count].val = val; |
| 590 | sprot_items[sprot_item_count].readonly = is_ro; |
| 591 | sprot_item_count++; |
| 592 | } |
| 593 | |
| 594 | static void carthw_sprot_unload(void) |
| 595 | { |
| 596 | free(sprot_items); |
| 597 | sprot_items = NULL; |
| 598 | sprot_item_count = sprot_item_alloc = 0; |
| 599 | } |
| 600 | |
| 601 | static void carthw_sprot_mem_setup(void) |
| 602 | { |
| 603 | int start; |
| 604 | |
| 605 | // map ROM - 0x7fffff, /TIME areas (which are tipically used) |
| 606 | start = (Pico.romsize + M68K_BANK_MASK) & ~M68K_BANK_MASK; |
| 607 | cpu68k_map_set(m68k_read8_map, start, 0x7fffff, PicoRead8_sprot, 1); |
| 608 | cpu68k_map_set(m68k_read16_map, start, 0x7fffff, PicoRead16_sprot, 1); |
| 609 | cpu68k_map_set(m68k_write8_map, start, 0x7fffff, PicoWrite8_sprot, 1); |
| 610 | cpu68k_map_set(m68k_write16_map, start, 0x7fffff, PicoWrite16_sprot, 1); |
| 611 | |
| 612 | cpu68k_map_set(m68k_read8_map, 0xa10000, 0xa1ffff, PicoRead8_sprot, 1); |
| 613 | cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, PicoRead16_sprot, 1); |
| 614 | cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, PicoWrite8_sprot, 1); |
| 615 | cpu68k_map_set(m68k_write16_map, 0xa10000, 0xa1ffff, PicoWrite16_sprot, 1); |
| 616 | } |
| 617 | |
| 618 | void carthw_sprot_startup(void) |
| 619 | { |
| 620 | elprintf(EL_STATUS, "Prot emu startup"); |
| 621 | |
| 622 | PicoCartMemSetup = carthw_sprot_mem_setup; |
| 623 | PicoCartUnloadHook = carthw_sprot_unload; |
| 624 | } |
| 625 | |
| 626 | /* Protection emulation for Lion King 3. Credits go to Haze */ |
| 627 | static u8 prot_lk3_cmd, prot_lk3_data; |
| 628 | |
| 629 | static u32 PicoRead8_plk3(u32 a) |
| 630 | { |
| 631 | u32 d = 0; |
| 632 | switch (prot_lk3_cmd) { |
| 633 | case 1: d = prot_lk3_data >> 1; break; |
| 634 | case 2: // nibble rotate |
| 635 | d = ((prot_lk3_data >> 4) | (prot_lk3_data << 4)) & 0xff; |
| 636 | break; |
| 637 | case 3: // bit rotate |
| 638 | d = prot_lk3_data; |
| 639 | d = (d >> 4) | (d << 4); |
| 640 | d = ((d & 0xcc) >> 2) | ((d & 0x33) << 2); |
| 641 | d = ((d & 0xaa) >> 1) | ((d & 0x55) << 1); |
| 642 | break; |
| 643 | /* Top Fighter 2000 MK VIII (Unl) |
| 644 | case 0x98: d = 0x50; break; // prot_lk3_data == a8 here |
| 645 | case 0x67: d = 0xde; break; // prot_lk3_data == 7b here (rot!) |
| 646 | case 0xb5: d = 0x9f; break; // prot_lk3_data == 4a |
| 647 | */ |
| 648 | default: |
| 649 | elprintf(EL_UIO, "unhandled prot cmd %02x @%06x", prot_lk3_cmd, SekPc); |
| 650 | break; |
| 651 | } |
| 652 | |
| 653 | elprintf(EL_UIO, "prot r8 [%06x] %02x @%06x", a, d, SekPc); |
| 654 | return d; |
| 655 | } |
| 656 | |
| 657 | static void PicoWrite8_plk3p(u32 a, u32 d) |
| 658 | { |
| 659 | elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc); |
| 660 | if (a & 2) |
| 661 | prot_lk3_cmd = d; |
| 662 | else |
| 663 | prot_lk3_data = d; |
| 664 | } |
| 665 | |
| 666 | static void PicoWrite8_plk3b(u32 a, u32 d) |
| 667 | { |
| 668 | int addr; |
| 669 | |
| 670 | elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc); |
| 671 | addr = d << 15; |
| 672 | if (addr + 0x8000 > Pico.romsize) { |
| 673 | elprintf(EL_UIO|EL_ANOMALY, "prot_lk3: bank too large: %02x", d); |
| 674 | return; |
| 675 | } |
| 676 | if (addr == 0) |
| 677 | memcpy(Pico.rom, Pico.rom + Pico.romsize, 0x8000); |
| 678 | else |
| 679 | memcpy(Pico.rom, Pico.rom + addr, 0x8000); |
| 680 | } |
| 681 | |
| 682 | static void carthw_prot_lk3_mem_setup(void) |
| 683 | { |
| 684 | cpu68k_map_set(m68k_read8_map, 0x600000, 0x7fffff, PicoRead8_plk3, 1); |
| 685 | cpu68k_map_set(m68k_write8_map, 0x600000, 0x6fffff, PicoWrite8_plk3p, 1); |
| 686 | cpu68k_map_set(m68k_write8_map, 0x700000, 0x7fffff, PicoWrite8_plk3b, 1); |
| 687 | } |
| 688 | |
| 689 | void carthw_prot_lk3_startup(void) |
| 690 | { |
| 691 | int ret; |
| 692 | |
| 693 | elprintf(EL_STATUS, "lk3 prot emu startup"); |
| 694 | |
| 695 | // allocate space for bank0 backup |
| 696 | ret = PicoCartResize(Pico.romsize + 0x8000); |
| 697 | if (ret != 0) { |
| 698 | elprintf(EL_STATUS, "OOM"); |
| 699 | return; |
| 700 | } |
| 701 | memcpy(Pico.rom + Pico.romsize, Pico.rom, 0x8000); |
| 702 | |
| 703 | PicoCartMemSetup = carthw_prot_lk3_mem_setup; |
| 704 | } |
| 705 | |
| 706 | // vim:ts=2:sw=2:expandtab |