2 * Support for a few cart mappers and some protection.
4 * (c) Copyright 2008-2009, Grazvydas "notaz" Ignotas
5 * Free for non-commercial use.
9 #include "../pico_int.h"
10 #include "../memory.h"
13 /* The SSFII mapper */
14 unsigned char ssf2_banks[8];
16 static carthw_state_chunk carthw_ssf2_state[] =
18 { CHUNK_CARTHW, sizeof(ssf2_banks), &ssf2_banks },
22 static void carthw_ssf2_write8(u32 a, u32 d)
26 if ((a & 0xfffff0) != 0xa130f0) {
35 ssf2_banks[a >> 1] = d;
38 if (base + 0x80000 > Pico.romsize) {
39 elprintf(EL_ANOMALY|EL_STATUS, "ssf2: missing bank @ %06x", base);
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);
47 static void carthw_ssf2_mem_setup(void)
49 cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_ssf2_write8, 1);
52 static void carthw_ssf2_statef(void)
55 for (i = 1; i < 8; i++)
56 carthw_ssf2_write8(0xa130f0 | (i << 1), ssf2_banks[i]);
59 void carthw_ssf2_startup(void)
63 elprintf(EL_STATUS, "SSF2 mapper startup");
66 for (i = 0; i < 8; i++)
69 PicoCartMemSetup = carthw_ssf2_mem_setup;
70 PicoLoadStateHook = carthw_ssf2_statef;
71 carthw_chunks = carthw_ssf2_state;
75 /* Common *-in-1 pirate mapper.
76 * Switches banks based on addr lines when /TIME is set.
79 static unsigned int carthw_Xin1_baddr = 0;
81 static void carthw_Xin1_do(u32 a, int mask, int shift)
85 carthw_Xin1_baddr = a;
88 len = Pico.romsize - a;
90 elprintf(EL_ANOMALY|EL_STATUS, "X-in-1: missing bank @ %06x", a);
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);
99 static carthw_state_chunk carthw_Xin1_state[] =
101 { CHUNK_CARTHW, sizeof(carthw_Xin1_baddr), &carthw_Xin1_baddr },
105 // TODO: test a0, reads, w16
106 static void carthw_Xin1_write8(u32 a, u32 d)
108 if ((a & 0xffff00) != 0xa13000) {
113 carthw_Xin1_do(a, 0x3f, 16);
116 static void carthw_Xin1_mem_setup(void)
118 cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_Xin1_write8, 1);
121 static void carthw_Xin1_reset(void)
123 carthw_Xin1_write8(0xa13000, 0);
126 static void carthw_Xin1_statef(void)
128 carthw_Xin1_write8(carthw_Xin1_baddr, 0);
131 void carthw_Xin1_startup(void)
133 elprintf(EL_STATUS, "X-in-1 mapper startup");
135 PicoCartMemSetup = carthw_Xin1_mem_setup;
136 PicoResetHook = carthw_Xin1_reset;
137 PicoLoadStateHook = carthw_Xin1_statef;
138 carthw_chunks = carthw_Xin1_state;
142 /* Realtec, based on TascoDLX doc
143 * http://www.sharemation.com/TascoDLX/REALTEC%20Cart%20Mapper%20-%20description%20v1.txt
145 static int realtec_bank = 0x80000000, realtec_size = 0x80000000;
147 static void carthw_realtec_write8(u32 a, u32 d)
149 int i, bank_old = realtec_bank, size_old = realtec_size;
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);
158 else if (a == 0x402000)
160 realtec_size = (d << 17) & 0x3e0000;
161 if (realtec_size != size_old)
162 elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc);
164 else if (a == 0x404000)
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);
172 elprintf(EL_ANOMALY, "realtec: unexpected write [%06x] %02x @ %06x", a, d, SekPc);
174 if (realtec_bank >= 0 && realtec_size >= 0 &&
175 (realtec_bank != bank_old || realtec_size != size_old))
177 elprintf(EL_ANOMALY, "realtec: new bank %06x, size %06x", realtec_bank, realtec_size, SekPc);
178 if (realtec_size > Pico.romsize - realtec_bank)
180 elprintf(EL_ANOMALY, "realtec: bank too large / out of range?");
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);
191 static void carthw_realtec_reset(void)
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);
200 cpu68k_map_set(m68k_write8_map, 0x400000, 0x400000 + M68K_BANK_SIZE - 1, carthw_realtec_write8, 1);
201 realtec_bank = realtec_size = 0x80000000;
204 void carthw_realtec_startup(void)
208 elprintf(EL_STATUS, "Realtec mapper startup");
210 // allocate additional bank for boot code
211 // (we know those ROMs have aligned size)
212 i = PicoCartResize(Pico.romsize + M68K_BANK_SIZE);
214 elprintf(EL_STATUS, "OOM");
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);
222 PicoResetHook = carthw_realtec_reset;
225 /* Radica mapper, based on DevSter's info
226 * http://devster.monkeeh.com/sega/radica/
227 * XXX: mostly the same as X-in-1, merge?
229 static u32 carthw_radica_read16(u32 a)
231 if ((a & 0xffff00) != 0xa13000)
232 return PicoRead16_io(a);
234 carthw_Xin1_do(a, 0x7e, 15);
239 static void carthw_radica_mem_setup(void)
241 cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, carthw_radica_read16, 1);
244 static void carthw_radica_statef(void)
246 carthw_radica_read16(carthw_Xin1_baddr);
249 static void carthw_radica_reset(void)
251 carthw_radica_read16(0xa13000);
254 void carthw_radica_startup(void)
256 elprintf(EL_STATUS, "Radica mapper startup");
258 PicoCartMemSetup = carthw_radica_mem_setup;
259 PicoResetHook = carthw_radica_reset;
260 PicoLoadStateHook = carthw_radica_statef;
261 carthw_chunks = carthw_Xin1_state;
264 /* Simple unlicensed ROM protection emulation */
271 static int sprot_item_alloc;
272 static int sprot_item_count;
274 static u16 *carthw_sprot_get_val(u32 a, int rw_only)
278 for (i = 0; i < sprot_item_count; i++)
279 if ((a & sprot_items[i].mask) == sprot_items[i].addr)
280 if (!rw_only || !sprot_items[i].readonly)
281 return &sprot_items[i].val;
285 static u32 PicoRead8_sprot(u32 a)
290 if (0xa10000 <= a && a < 0xa12000)
291 return PicoRead8_io(a);
293 val = carthw_sprot_get_val(a, 0);
298 elprintf(EL_UIO, "prot r8 [%06x] %02x @%06x", a, d, SekPc);
302 elprintf(EL_UIO, "prot r8 [%06x] MISS @%06x", a, SekPc);
307 static u32 PicoRead16_sprot(u32 a)
311 if (0xa10000 <= a && a < 0xa12000)
312 return PicoRead16_io(a);
314 val = carthw_sprot_get_val(a, 0);
316 elprintf(EL_UIO, "prot r16 [%06x] %04x @%06x", a, *val, SekPc);
320 elprintf(EL_UIO, "prot r16 [%06x] MISS @%06x", a, SekPc);
325 static void PicoWrite8_sprot(u32 a, u32 d)
329 if (0xa10000 <= a && a < 0xa12000) {
334 val = carthw_sprot_get_val(a, 1);
337 *val = (*val & 0xff00) | (d | 0xff);
339 *val = (*val & 0x00ff) | (d << 8);
340 elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc);
343 elprintf(EL_UIO, "prot w8 [%06x] %02x MISS @%06x", a, d & 0xff, SekPc);
346 static void PicoWrite16_sprot(u32 a, u32 d)
350 if (0xa10000 <= a && a < 0xa12000) {
351 PicoWrite16_io(a, d);
355 val = carthw_sprot_get_val(a, 1);
358 elprintf(EL_UIO, "prot w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc);
361 elprintf(EL_UIO, "prot w16 [%06x] %04x MISS @%06x", a, d & 0xffff, SekPc);
364 void carthw_sprot_new_location(unsigned int a, unsigned int mask, unsigned short val, int is_ro)
366 if (sprot_items == NULL) {
367 sprot_items = calloc(8, sizeof(sprot_items[0]));
368 sprot_item_alloc = 8;
369 sprot_item_count = 0;
372 if (sprot_item_count == sprot_item_alloc) {
374 sprot_item_alloc *= 2;
375 tmp = realloc(sprot_items, sprot_item_alloc);
377 elprintf(EL_STATUS, "OOM");
383 sprot_items[sprot_item_count].addr = a;
384 sprot_items[sprot_item_count].mask = mask;
385 sprot_items[sprot_item_count].val = val;
386 sprot_items[sprot_item_count].readonly = is_ro;
390 static void carthw_sprot_unload(void)
394 sprot_item_count = sprot_item_alloc = 0;
397 static void carthw_sprot_mem_setup(void)
401 // map ROM - 0x7fffff, /TIME areas (which are tipically used)
402 start = (Pico.romsize + M68K_BANK_MASK) & ~M68K_BANK_MASK;
403 cpu68k_map_set(m68k_read8_map, start, 0x7fffff, PicoRead8_sprot, 1);
404 cpu68k_map_set(m68k_read16_map, start, 0x7fffff, PicoRead16_sprot, 1);
405 cpu68k_map_set(m68k_write8_map, start, 0x7fffff, PicoWrite8_sprot, 1);
406 cpu68k_map_set(m68k_write16_map, start, 0x7fffff, PicoWrite16_sprot, 1);
408 cpu68k_map_set(m68k_read8_map, 0xa10000, 0xa1ffff, PicoRead8_sprot, 1);
409 cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, PicoRead16_sprot, 1);
410 cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, PicoWrite8_sprot, 1);
411 cpu68k_map_set(m68k_write16_map, 0xa10000, 0xa1ffff, PicoWrite16_sprot, 1);
414 void carthw_sprot_startup(void)
416 elprintf(EL_STATUS, "Prot emu startup");
418 PicoCartMemSetup = carthw_sprot_mem_setup;
419 PicoCartUnloadHook = carthw_sprot_unload;
422 /* Protection emulation for Lion King 3. Credits go to Haze */
423 static u8 prot_lk3_cmd, prot_lk3_data;
425 static u32 PicoRead8_plk3(u32 a)
428 switch (prot_lk3_cmd) {
429 case 1: d = prot_lk3_data >> 1; break;
430 case 2: // nibble rotate
431 d = ((prot_lk3_data >> 4) | (prot_lk3_data << 4)) & 0xff;
433 case 3: // bit rotate
435 d = (d >> 4) | (d << 4);
436 d = ((d & 0xcc) >> 2) | ((d & 0x33) << 2);
437 d = ((d & 0xaa) >> 1) | ((d & 0x55) << 1);
439 /* Top Fighter 2000 MK VIII (Unl)
440 case 0x98: d = 0x50; break; // prot_lk3_data == a8 here
441 case 0x67: d = 0xde; break; // prot_lk3_data == 7b here (rot!)
442 case 0xb5: d = 0x9f; break; // prot_lk3_data == 4a
445 elprintf(EL_UIO, "unhandled prot cmd %02x @%06x", prot_lk3_cmd, SekPc);
449 elprintf(EL_UIO, "prot r8 [%06x] %02x @%06x", a, d, SekPc);
453 static void PicoWrite8_plk3p(u32 a, u32 d)
455 elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc);
462 static void PicoWrite8_plk3b(u32 a, u32 d)
466 elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc);
468 if (addr + 0x8000 > Pico.romsize) {
469 elprintf(EL_UIO|EL_ANOMALY, "prot_lk3: bank too large: %02x", d);
473 memcpy(Pico.rom, Pico.rom + Pico.romsize, 0x8000);
475 memcpy(Pico.rom, Pico.rom + addr, 0x8000);
478 static void carthw_prot_lk3_mem_setup(void)
480 cpu68k_map_set(m68k_read8_map, 0x600000, 0x7fffff, PicoRead8_plk3, 1);
481 cpu68k_map_set(m68k_write8_map, 0x600000, 0x6fffff, PicoWrite8_plk3p, 1);
482 cpu68k_map_set(m68k_write8_map, 0x700000, 0x7fffff, PicoWrite8_plk3b, 1);
485 void carthw_prot_lk3_startup(void)
489 elprintf(EL_STATUS, "lk3 prot emu startup");
491 // allocate space for bank0 backup
492 ret = PicoCartResize(Pico.romsize + 0x8000);
494 elprintf(EL_STATUS, "OOM");
497 memcpy(Pico.rom + Pico.romsize, Pico.rom, 0x8000);
499 PicoCartMemSetup = carthw_prot_lk3_mem_setup;