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- /*
- * Support for a few cart mappers and some protection.
- * (C) notaz, 2008-2011
- *
- * This work is licensed under the terms of MAME license.
- * See COPYING file in the top-level directory.
- */
- #include "../pico_int.h"
- #include "../memory.h"
- #include "eeprom_spi.h"
- static int have_bank(u32 base)
- {
- // the loader allocs in 512K quantities
- if (base >= Pico.romsize) {
- elprintf(EL_ANOMALY|EL_STATUS, "carthw: missing bank @ %06x", base);
- return 0;
- }
- return 1;
- }
- /* standard/ssf2 mapper */
- int carthw_ssf2_active;
- unsigned char carthw_ssf2_banks[8];
- static carthw_state_chunk carthw_ssf2_state[] =
- {
- { CHUNK_CARTHW, sizeof(carthw_ssf2_banks), &carthw_ssf2_banks },
- { 0, 0, NULL }
- };
- void carthw_ssf2_write8(u32 a, u32 d)
- {
- u32 target, base;
- if ((a & ~0x0e) != 0xa130f1 || a == 0xa130f1) {
- PicoWrite8_io(a, d);
- return;
- }
- a &= 0x0e;
- if (a == 0)
- return;
- if (carthw_ssf2_banks[a >> 1] == d)
- return;
- base = d << 19;
- target = a << 18;
- if (!have_bank(base))
- return;
- carthw_ssf2_banks[a >> 1] = d;
- cpu68k_map_set(m68k_read8_map, target, target + 0x80000 - 1, Pico.rom + base, 0);
- cpu68k_map_set(m68k_read16_map, target, target + 0x80000 - 1, Pico.rom + base, 0);
- }
- void carthw_ssf2_write16(u32 a, u32 d)
- {
- PicoWrite16_io(a, d);
- if ((a & ~0x0f) == 0xa130f0)
- carthw_ssf2_write8(a + 1, d);
- }
- static void carthw_ssf2_mem_setup(void)
- {
- cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_ssf2_write8, 1);
- cpu68k_map_set(m68k_write16_map, 0xa10000, 0xa1ffff, carthw_ssf2_write16, 1);
- }
- static void carthw_ssf2_statef(void)
- {
- int i, reg;
- for (i = 1; i < 8; i++) {
- reg = carthw_ssf2_banks[i];
- carthw_ssf2_banks[i] = i;
- carthw_ssf2_write8(0xa130f1 | (i << 1), reg);
- }
- }
- static void carthw_ssf2_unload(void)
- {
- memset(carthw_ssf2_banks, 0, sizeof(carthw_ssf2_banks));
- carthw_ssf2_active = 0;
- }
- void carthw_ssf2_startup(void)
- {
- int i;
- elprintf(EL_STATUS, "SSF2 mapper startup");
- // default map
- for (i = 0; i < 8; i++)
- carthw_ssf2_banks[i] = i;
- PicoCartMemSetup = carthw_ssf2_mem_setup;
- PicoLoadStateHook = carthw_ssf2_statef;
- PicoCartUnloadHook = carthw_ssf2_unload;
- carthw_chunks = carthw_ssf2_state;
- carthw_ssf2_active = 1;
- }
- /* Common *-in-1 pirate mapper.
- * Switches banks based on addr lines when /TIME is set.
- * TODO: verify
- */
- static unsigned int carthw_Xin1_baddr = 0;
- static void carthw_Xin1_do(u32 a, int mask, int shift)
- {
- int len;
- carthw_Xin1_baddr = a;
- a &= mask;
- a <<= shift;
- len = Pico.romsize - a;
- if (len <= 0) {
- elprintf(EL_ANOMALY|EL_STATUS, "X-in-1: missing bank @ %06x", a);
- return;
- }
- len = (len + M68K_BANK_MASK) & ~M68K_BANK_MASK;
- cpu68k_map_set(m68k_read8_map, 0x000000, len - 1, Pico.rom + a, 0);
- cpu68k_map_set(m68k_read16_map, 0x000000, len - 1, Pico.rom + a, 0);
- }
- static carthw_state_chunk carthw_Xin1_state[] =
- {
- { CHUNK_CARTHW, sizeof(carthw_Xin1_baddr), &carthw_Xin1_baddr },
- { 0, 0, NULL }
- };
- // TODO: test a0, reads, w16
- static void carthw_Xin1_write8(u32 a, u32 d)
- {
- if ((a & 0xffff00) != 0xa13000) {
- PicoWrite8_io(a, d);
- return;
- }
- carthw_Xin1_do(a, 0x3f, 16);
- }
- static void carthw_Xin1_mem_setup(void)
- {
- cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_Xin1_write8, 1);
- }
- static void carthw_Xin1_reset(void)
- {
- carthw_Xin1_write8(0xa13000, 0);
- }
- static void carthw_Xin1_statef(void)
- {
- carthw_Xin1_write8(carthw_Xin1_baddr, 0);
- }
- void carthw_Xin1_startup(void)
- {
- elprintf(EL_STATUS, "X-in-1 mapper startup");
- PicoCartMemSetup = carthw_Xin1_mem_setup;
- PicoResetHook = carthw_Xin1_reset;
- PicoLoadStateHook = carthw_Xin1_statef;
- carthw_chunks = carthw_Xin1_state;
- }
- /* Realtec, based on TascoDLX doc
- * http://www.sharemation.com/TascoDLX/REALTEC%20Cart%20Mapper%20-%20description%20v1.txt
- */
- static int realtec_bank = 0x80000000, realtec_size = 0x80000000;
- static void carthw_realtec_write8(u32 a, u32 d)
- {
- int i, bank_old = realtec_bank, size_old = realtec_size;
- if (a == 0x400000)
- {
- realtec_bank &= 0x0e0000;
- realtec_bank |= 0x300000 & (d << 19);
- if (realtec_bank != bank_old)
- elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc);
- }
- else if (a == 0x402000)
- {
- realtec_size = (d << 17) & 0x3e0000;
- if (realtec_size != size_old)
- elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc);
- }
- else if (a == 0x404000)
- {
- realtec_bank &= 0x300000;
- realtec_bank |= 0x0e0000 & (d << 17);
- if (realtec_bank != bank_old)
- elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc);
- }
- else
- elprintf(EL_ANOMALY, "realtec: unexpected write [%06x] %02x @ %06x", a, d, SekPc);
- if (realtec_bank >= 0 && realtec_size >= 0 &&
- (realtec_bank != bank_old || realtec_size != size_old))
- {
- elprintf(EL_ANOMALY, "realtec: new bank %06x, size %06x", realtec_bank, realtec_size, SekPc);
- if (realtec_size > Pico.romsize - realtec_bank)
- {
- elprintf(EL_ANOMALY, "realtec: bank too large / out of range?");
- return;
- }
- for (i = 0; i < 0x400000; i += realtec_size) {
- cpu68k_map_set(m68k_read8_map, i, realtec_size - 1, Pico.rom + realtec_bank, 0);
- cpu68k_map_set(m68k_read16_map, i, realtec_size - 1, Pico.rom + realtec_bank, 0);
- }
- }
- }
- static void carthw_realtec_reset(void)
- {
- int i;
- /* map boot code */
- for (i = 0; i < 0x400000; i += M68K_BANK_SIZE) {
- cpu68k_map_set(m68k_read8_map, i, i + M68K_BANK_SIZE - 1, Pico.rom + Pico.romsize, 0);
- cpu68k_map_set(m68k_read16_map, i, i + M68K_BANK_SIZE - 1, Pico.rom + Pico.romsize, 0);
- }
- cpu68k_map_set(m68k_write8_map, 0x400000, 0x400000 + M68K_BANK_SIZE - 1, carthw_realtec_write8, 1);
- realtec_bank = realtec_size = 0x80000000;
- }
- void carthw_realtec_startup(void)
- {
- int i;
- elprintf(EL_STATUS, "Realtec mapper startup");
- // allocate additional bank for boot code
- // (we know those ROMs have aligned size)
- i = PicoCartResize(Pico.romsize + M68K_BANK_SIZE);
- if (i != 0) {
- elprintf(EL_STATUS, "OOM");
- return;
- }
- // create bank for boot code
- for (i = 0; i < M68K_BANK_SIZE; i += 0x2000)
- memcpy(Pico.rom + Pico.romsize + i, Pico.rom + Pico.romsize - 0x2000, 0x2000);
- PicoResetHook = carthw_realtec_reset;
- }
- /* Radica mapper, based on DevSter's info
- * http://devster.monkeeh.com/sega/radica/
- * XXX: mostly the same as X-in-1, merge?
- */
- static u32 carthw_radica_read16(u32 a)
- {
- if ((a & 0xffff00) != 0xa13000)
- return PicoRead16_io(a);
- carthw_Xin1_do(a, 0x7e, 15);
- return 0;
- }
- static void carthw_radica_mem_setup(void)
- {
- cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, carthw_radica_read16, 1);
- }
- static void carthw_radica_statef(void)
- {
- carthw_radica_read16(carthw_Xin1_baddr);
- }
- static void carthw_radica_reset(void)
- {
- carthw_radica_read16(0xa13000);
- }
- void carthw_radica_startup(void)
- {
- elprintf(EL_STATUS, "Radica mapper startup");
- PicoCartMemSetup = carthw_radica_mem_setup;
- PicoResetHook = carthw_radica_reset;
- PicoLoadStateHook = carthw_radica_statef;
- carthw_chunks = carthw_Xin1_state;
- }
- /* Pier Solar. Based on my own research */
- static unsigned char pier_regs[8];
- static unsigned char pier_dump_prot;
- static carthw_state_chunk carthw_pier_state[] =
- {
- { CHUNK_CARTHW, sizeof(pier_regs), pier_regs },
- { CHUNK_CARTHW + 1, sizeof(pier_dump_prot), &pier_dump_prot },
- { CHUNK_CARTHW + 2, 0, NULL }, // filled later
- { 0, 0, NULL }
- };
- static void carthw_pier_write8(u32 a, u32 d)
- {
- u32 a8, target, base;
- if ((a & 0xffff00) != 0xa13000) {
- PicoWrite8_io(a, d);
- return;
- }
- a8 = a & 0x0f;
- pier_regs[a8 / 2] = d;
- elprintf(EL_UIO, "pier w8 [%06x] %02x @%06x", a, d & 0xffff, SekPc);
- switch (a8) {
- case 0x01:
- break;
- case 0x03:
- if (!(pier_regs[0] & 2))
- goto unmapped;
- target = 0x280000;
- base = d << 19;
- goto do_map;
- case 0x05:
- if (!(pier_regs[0] & 2))
- goto unmapped;
- target = 0x300000;
- base = d << 19;
- goto do_map;
- case 0x07:
- if (!(pier_regs[0] & 2))
- goto unmapped;
- target = 0x380000;
- base = d << 19;
- goto do_map;
- case 0x09:
- Pico.sv.changed = 1;
- eeprom_spi_write(d);
- break;
- case 0x0b:
- // eeprom read
- default:
- unmapped:
- //elprintf(EL_UIO, "pier w8 [%06x] %02x @%06x", a, d & 0xffff, SekPc);
- elprintf(EL_STATUS, "-- unmapped w8 [%06x] %02x @%06x", a, d & 0xffff, SekPc);
- break;
- }
- return;
- do_map:
- if (!have_bank(base))
- return;
- cpu68k_map_set(m68k_read8_map, target, target + 0x80000 - 1, Pico.rom + base, 0);
- cpu68k_map_set(m68k_read16_map, target, target + 0x80000 - 1, Pico.rom + base, 0);
- }
- static void carthw_pier_write16(u32 a, u32 d)
- {
- if ((a & 0xffff00) != 0xa13000) {
- PicoWrite16_io(a, d);
- return;
- }
- elprintf(EL_UIO, "pier w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc);
- carthw_pier_write8(a + 1, d);
- }
- static u32 carthw_pier_read8(u32 a)
- {
- if ((a & 0xffff00) != 0xa13000)
- return PicoRead8_io(a);
- if (a == 0xa1300b)
- return eeprom_spi_read(a);
- elprintf(EL_UIO, "pier r8 [%06x] @%06x", a, SekPc);
- return 0;
- }
- static void carthw_pier_statef(void);
- static u32 carthw_pier_prot_read8(u32 a)
- {
- /* it takes more than just these reads here to disable ROM protection,
- * but for game emulation purposes this is enough. */
- if (pier_dump_prot > 0)
- pier_dump_prot--;
- if (pier_dump_prot == 0) {
- carthw_pier_statef();
- elprintf(EL_STATUS, "prot off on r8 @%06x", SekPc);
- }
- elprintf(EL_UIO, "pier r8 [%06x] @%06x", a, SekPc);
- return Pico.rom[MEM_BE2(a & 0x7fff)];
- }
- static void carthw_pier_mem_setup(void)
- {
- cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_pier_write8, 1);
- cpu68k_map_set(m68k_write16_map, 0xa10000, 0xa1ffff, carthw_pier_write16, 1);
- cpu68k_map_set(m68k_read8_map, 0xa10000, 0xa1ffff, carthw_pier_read8, 1);
- }
- static void carthw_pier_prot_mem_setup(int prot_enable)
- {
- if (prot_enable) {
- /* the dump protection.. */
- int a;
- for (a = 0x000000; a < 0x400000; a += M68K_BANK_SIZE) {
- cpu68k_map_set(m68k_read8_map, a, a + 0xffff, Pico.rom + Pico.romsize, 0);
- cpu68k_map_set(m68k_read16_map, a, a + 0xffff, Pico.rom + Pico.romsize, 0);
- }
- cpu68k_map_set(m68k_read8_map, M68K_BANK_SIZE, M68K_BANK_SIZE * 2 - 1,
- carthw_pier_prot_read8, 1);
- }
- else {
- cpu68k_map_set(m68k_read8_map, 0, 0x27ffff, Pico.rom, 0);
- cpu68k_map_set(m68k_read16_map, 0, 0x27ffff, Pico.rom, 0);
- }
- }
- static void carthw_pier_statef(void)
- {
- carthw_pier_prot_mem_setup(pier_dump_prot);
- if (!pier_dump_prot) {
- /* setup all banks */
- u32 r0 = pier_regs[0];
- carthw_pier_write8(0xa13001, 3);
- carthw_pier_write8(0xa13003, pier_regs[1]);
- carthw_pier_write8(0xa13005, pier_regs[2]);
- carthw_pier_write8(0xa13007, pier_regs[3]);
- carthw_pier_write8(0xa13001, r0);
- }
- }
- static void carthw_pier_reset(void)
- {
- pier_regs[0] = 1;
- pier_regs[1] = pier_regs[2] = pier_regs[3] = 0;
- carthw_pier_statef();
- eeprom_spi_init(NULL);
- }
- void carthw_pier_startup(void)
- {
- void *eeprom_state;
- int eeprom_size = 0;
- int i;
- elprintf(EL_STATUS, "Pier Solar mapper startup");
- // mostly same as for realtec..
- i = PicoCartResize(Pico.romsize + M68K_BANK_SIZE);
- if (i != 0) {
- elprintf(EL_STATUS, "OOM");
- return;
- }
- pier_dump_prot = 3;
- // create dump protection bank
- for (i = 0; i < M68K_BANK_SIZE; i += 0x8000)
- memcpy(Pico.rom + Pico.romsize + i, Pico.rom, 0x8000);
- // save EEPROM
- eeprom_state = eeprom_spi_init(&eeprom_size);
- Pico.sv.flags = 0;
- Pico.sv.size = 0x10000;
- Pico.sv.data = calloc(1, Pico.sv.size);
- if (!Pico.sv.data)
- Pico.sv.size = 0;
- carthw_pier_state[2].ptr = eeprom_state;
- carthw_pier_state[2].size = eeprom_size;
- PicoCartMemSetup = carthw_pier_mem_setup;
- PicoResetHook = carthw_pier_reset;
- PicoLoadStateHook = carthw_pier_statef;
- carthw_chunks = carthw_pier_state;
- }
- /* superfighter mappers, see mame: mame/src/devices/bus/megadrive/rom.cpp */
- unsigned int carthw_sf00x_reg;
- static carthw_state_chunk carthw_sf00x_state[] =
- {
- { CHUNK_CARTHW, sizeof(carthw_sf00x_reg), &carthw_sf00x_reg },
- { 0, 0, NULL }
- };
- // SF-001
- // additionally map SRAM at 0x3c0000 for the newer version of sf001
- static u32 carthw_sf001_read8_sram(u32 a)
- {
- return m68k_read8((a & 0xffff) + Pico.sv.start);
- }
- static u32 carthw_sf001_read16_sram(u32 a)
- {
- return m68k_read16((a & 0xffff) + Pico.sv.start);
- }
- static void carthw_sf001_write8_sram(u32 a, u32 d)
- {
- m68k_write8((a & 0xffff) + Pico.sv.start, d);
- }
- static void carthw_sf001_write16_sram(u32 a, u32 d)
- {
- m68k_write16((a & 0xffff) + Pico.sv.start, d);
- }
- static void carthw_sf001_write8(u32 a, u32 d)
- {
- if ((a & 0xf00) != 0xe00 || (carthw_sf00x_reg & 0x20)) // wrong addr / locked
- return;
- if (d & 0x80) {
- // bank 0xe at addr 0x000000
- cpu68k_map_set(m68k_read8_map, 0x000000, 0x040000-1, Pico.rom+0x380000, 0);
- cpu68k_map_set(m68k_read16_map, 0x000000, 0x040000-1, Pico.rom+0x380000, 0);
- // SRAM also at 0x3c0000 for newer mapper version
- cpu68k_map_set(m68k_read8_map, 0x3c0000, 0x400000-1, carthw_sf001_read8_sram, 1);
- cpu68k_map_set(m68k_read16_map, 0x3c0000, 0x400000-1, carthw_sf001_read16_sram, 1);
- cpu68k_map_set(m68k_write8_map, 0x3c0000, 0x400000-1, carthw_sf001_write8_sram, 1);
- cpu68k_map_set(m68k_write16_map,0x3c0000, 0x400000-1, carthw_sf001_write16_sram, 1);
- } else {
- // bank 0x0 at addr 0x000000
- cpu68k_map_set(m68k_read8_map, 0x000000, 0x040000-1, Pico.rom, 0);
- cpu68k_map_set(m68k_read16_map, 0x000000, 0x040000-1, Pico.rom, 0);
- // SRAM off, bank 0xf at addr 0x3c0000
- cpu68k_map_set(m68k_read8_map, 0x3c0000, 0x400000-1, Pico.rom+0x3c0000, 0);
- cpu68k_map_set(m68k_read16_map, 0x3c0000, 0x400000-1, Pico.rom+0x3c0000, 0);
- cpu68k_map_set(m68k_write8_map, 0x3c0000, 0x400000-1, Pico.rom+0x3c0000, 0);
- cpu68k_map_set(m68k_write16_map,0x3c0000, 0x400000-1, Pico.rom+0x3c0000, 0);
- }
- carthw_sf00x_reg = d;
- }
- static void carthw_sf001_write16(u32 a, u32 d)
- {
- carthw_sf001_write8(a + 1, d);
- }
- static void carthw_sf001_mem_setup(void)
- {
- // writing to low cartridge addresses
- cpu68k_map_set(m68k_write8_map, 0x000000, 0x00ffff, carthw_sf001_write8, 1);
- cpu68k_map_set(m68k_write16_map, 0x000000, 0x00ffff, carthw_sf001_write16, 1);
- }
- static void carthw_sf001_reset(void)
- {
- carthw_sf00x_reg = 0;
- carthw_sf001_write8(0x0e01, 0);
- }
- static void carthw_sf001_statef(void)
- {
- int reg = carthw_sf00x_reg;
- carthw_sf00x_reg = 0;
- carthw_sf001_write8(0x0e01, reg);
- }
- void carthw_sf001_startup(void)
- {
- PicoCartMemSetup = carthw_sf001_mem_setup;
- PicoResetHook = carthw_sf001_reset;
- PicoLoadStateHook = carthw_sf001_statef;
- carthw_chunks = carthw_sf00x_state;
- }
- // SF-002
- static void carthw_sf002_write8(u32 a, u32 d)
- {
- if ((a & 0xf00) != 0xe00)
- return;
- if (d & 0x80) {
- // bank 0x00-0x0e on addr 0x20000
- cpu68k_map_set(m68k_read8_map, 0x200000, 0x3c0000-1, Pico.rom, 0);
- cpu68k_map_set(m68k_read16_map, 0x200000, 0x3c0000-1, Pico.rom, 0);
- } else {
- // bank 0x10-0x1e on addr 0x20000
- cpu68k_map_set(m68k_read8_map, 0x200000, 0x3c0000-1, Pico.rom+0x200000, 0);
- cpu68k_map_set(m68k_read16_map, 0x200000, 0x3c0000-1, Pico.rom+0x200000, 0);
- }
- carthw_sf00x_reg = d;
- }
- static void carthw_sf002_write16(u32 a, u32 d)
- {
- carthw_sf002_write8(a + 1, d);
- }
- static void carthw_sf002_mem_setup(void)
- {
- // writing to low cartridge addresses
- cpu68k_map_set(m68k_write8_map, 0x000000, 0x00ffff, carthw_sf002_write8, 1);
- cpu68k_map_set(m68k_write16_map, 0x000000, 0x00ffff, carthw_sf002_write16, 1);
- }
- static void carthw_sf002_reset(void)
- {
- carthw_sf002_write8(0x0e01, 0);
- }
- static void carthw_sf002_statef(void)
- {
- carthw_sf002_write8(0x0e01, carthw_sf00x_reg);
- }
- void carthw_sf002_startup(void)
- {
- PicoCartMemSetup = carthw_sf002_mem_setup;
- PicoResetHook = carthw_sf002_reset;
- PicoLoadStateHook = carthw_sf002_statef;
- carthw_chunks = carthw_sf00x_state;
- }
- // SF-004
- // reading from cartridge I/O region returns the current bank index
- static u32 carthw_sf004_read8(u32 a)
- {
- if ((a & ~0xff) == 0xa13000)
- return carthw_sf00x_reg & 0xf0; // bank index
- return PicoRead8_io(a);
- }
- static u32 carthw_sf004_read16(u32 a)
- {
- if ((a & ~0xff) == 0xa13000)
- return carthw_sf00x_reg & 0xf0;
- return PicoRead16_io(a);
- }
- // writing to low cartridge adresses changes mappings
- static void carthw_sf004_write8(u32 a, u32 d)
- {
- int idx, i;
- unsigned bs = 0x40000; // bank size
- // there are 3 byte-sized regs, stored together in carthw_sf00x_reg
- if (!(carthw_sf00x_reg & 0x8000))
- return; // locked
- switch (a & 0xf00) {
- case 0xd00:
- carthw_sf00x_reg = (carthw_sf00x_reg & ~0xff0000) | ((d & 0xff) << 16);
- return PicoWrite8_io(0xa130f1, (d & 0x80) ? SRR_MAPPED : 0); // SRAM mapping
- case 0xe00:
- carthw_sf00x_reg = (carthw_sf00x_reg & ~0x00ff00) | ((d & 0xff) << 8);
- break;
- case 0xf00:
- carthw_sf00x_reg = (carthw_sf00x_reg & ~0x0000ff) | ((d & 0xff) << 0);
- break;
- default:
- return; // wrong addr
- }
- // bank mapping changed
- idx = ((carthw_sf00x_reg>>4) & 0x7); // bank index
- if ((carthw_sf00x_reg>>8) & 0x40) {
- // linear bank mapping, starting at idx
- for (i = 0; i < 8; i++, idx = (idx+1) & 0x7) {
- cpu68k_map_set(m68k_read8_map, i*bs, (i+1)*bs-1, Pico.rom + idx*bs, 0);
- cpu68k_map_set(m68k_read16_map, i*bs, (i+1)*bs-1, Pico.rom + idx*bs, 0);
- }
- } else {
- // single bank mapping
- for (i = 0; i < 8; i++) {
- cpu68k_map_set(m68k_read8_map, i*bs, (i+1)*bs-1, Pico.rom + idx*bs, 0);
- cpu68k_map_set(m68k_read16_map, i*bs, (i+1)*bs-1, Pico.rom + idx*bs, 0);
- }
- }
- }
- static void carthw_sf004_write16(u32 a, u32 d)
- {
- carthw_sf004_write8(a + 1, d);
- }
- static void carthw_sf004_mem_setup(void)
- {
- // writing to low cartridge addresses
- cpu68k_map_set(m68k_write8_map, 0x000000, 0x00ffff, carthw_sf004_write8, 1);
- cpu68k_map_set(m68k_write16_map, 0x000000, 0x00ffff, carthw_sf004_write16, 1);
- // reading from the cartridge I/O region
- cpu68k_map_set(m68k_read8_map, 0xa10000, 0xa1ffff, carthw_sf004_read8, 1);
- cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, carthw_sf004_read16, 1);
- }
- static void carthw_sf004_reset(void)
- {
- carthw_sf00x_reg = -1;
- carthw_sf004_write8(0x0d01, 0);
- carthw_sf004_write8(0x0f01, 0);
- carthw_sf004_write8(0x0e01, 0x80);
- }
- static void carthw_sf004_statef(void)
- {
- int reg = carthw_sf00x_reg;
- carthw_sf00x_reg = -1;
- carthw_sf004_write8(0x0d01, reg >> 16);
- carthw_sf004_write8(0x0f01, reg >> 0);
- carthw_sf004_write8(0x0e01, reg >> 8);
- }
- void carthw_sf004_startup(void)
- {
- PicoCartMemSetup = carthw_sf004_mem_setup;
- PicoResetHook = carthw_sf004_reset;
- PicoLoadStateHook = carthw_sf004_statef;
- carthw_chunks = carthw_sf00x_state;
- }
- /* Simple unlicensed ROM protection emulation */
- static struct {
- u32 addr;
- u32 mask;
- u16 val;
- u16 readonly;
- } *sprot_items;
- static int sprot_item_alloc;
- static int sprot_item_count;
- static u16 *carthw_sprot_get_val(u32 a, int rw_only)
- {
- int i;
- for (i = 0; i < sprot_item_count; i++)
- if ((a & sprot_items[i].mask) == sprot_items[i].addr)
- if (!rw_only || !sprot_items[i].readonly)
- return &sprot_items[i].val;
- return NULL;
- }
- static u32 PicoRead8_sprot(u32 a)
- {
- u16 *val;
- u32 d;
- if (0xa10000 <= a && a < 0xa12000)
- return PicoRead8_io(a);
- val = carthw_sprot_get_val(a, 0);
- if (val != NULL) {
- d = *val;
- if (!(a & 1))
- d >>= 8;
- elprintf(EL_UIO, "prot r8 [%06x] %02x @%06x", a, d, SekPc);
- return d;
- }
- else {
- elprintf(EL_UIO, "prot r8 [%06x] MISS @%06x", a, SekPc);
- return 0;
- }
- }
- static u32 PicoRead16_sprot(u32 a)
- {
- u16 *val;
- if (0xa10000 <= a && a < 0xa12000)
- return PicoRead16_io(a);
- val = carthw_sprot_get_val(a, 0);
- if (val != NULL) {
- elprintf(EL_UIO, "prot r16 [%06x] %04x @%06x", a, *val, SekPc);
- return *val;
- }
- else {
- elprintf(EL_UIO, "prot r16 [%06x] MISS @%06x", a, SekPc);
- return 0;
- }
- }
- static void PicoWrite8_sprot(u32 a, u32 d)
- {
- u16 *val;
- if (0xa10000 <= a && a < 0xa12000) {
- PicoWrite8_io(a, d);
- return;
- }
- val = carthw_sprot_get_val(a, 1);
- if (val != NULL) {
- if (a & 1)
- *val = (*val & 0xff00) | (d | 0xff);
- else
- *val = (*val & 0x00ff) | (d << 8);
- elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc);
- }
- else
- elprintf(EL_UIO, "prot w8 [%06x] %02x MISS @%06x", a, d & 0xff, SekPc);
- }
- static void PicoWrite16_sprot(u32 a, u32 d)
- {
- u16 *val;
- if (0xa10000 <= a && a < 0xa12000) {
- PicoWrite16_io(a, d);
- return;
- }
- val = carthw_sprot_get_val(a, 1);
- if (val != NULL) {
- *val = d;
- elprintf(EL_UIO, "prot w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc);
- }
- else
- elprintf(EL_UIO, "prot w16 [%06x] %04x MISS @%06x", a, d & 0xffff, SekPc);
- }
- void carthw_sprot_new_location(unsigned int a, unsigned int mask, unsigned short val, int is_ro)
- {
- if (sprot_items == NULL) {
- sprot_items = calloc(8, sizeof(sprot_items[0]));
- sprot_item_alloc = 8;
- sprot_item_count = 0;
- }
- if (sprot_item_count == sprot_item_alloc) {
- void *tmp;
- sprot_item_alloc *= 2;
- tmp = realloc(sprot_items, sprot_item_alloc);
- if (tmp == NULL) {
- elprintf(EL_STATUS, "OOM");
- return;
- }
- sprot_items = tmp;
- }
- sprot_items[sprot_item_count].addr = a;
- sprot_items[sprot_item_count].mask = mask;
- sprot_items[sprot_item_count].val = val;
- sprot_items[sprot_item_count].readonly = is_ro;
- sprot_item_count++;
- }
- static void carthw_sprot_unload(void)
- {
- free(sprot_items);
- sprot_items = NULL;
- sprot_item_count = sprot_item_alloc = 0;
- }
- static void carthw_sprot_mem_setup(void)
- {
- int start;
- // map ROM - 0x7fffff, /TIME areas (which are tipically used)
- start = (Pico.romsize + M68K_BANK_MASK) & ~M68K_BANK_MASK;
- cpu68k_map_set(m68k_read8_map, start, 0x7fffff, PicoRead8_sprot, 1);
- cpu68k_map_set(m68k_read16_map, start, 0x7fffff, PicoRead16_sprot, 1);
- cpu68k_map_set(m68k_write8_map, start, 0x7fffff, PicoWrite8_sprot, 1);
- cpu68k_map_set(m68k_write16_map, start, 0x7fffff, PicoWrite16_sprot, 1);
- cpu68k_map_set(m68k_read8_map, 0xa10000, 0xa1ffff, PicoRead8_sprot, 1);
- cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, PicoRead16_sprot, 1);
- cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, PicoWrite8_sprot, 1);
- cpu68k_map_set(m68k_write16_map, 0xa10000, 0xa1ffff, PicoWrite16_sprot, 1);
- }
- void carthw_sprot_startup(void)
- {
- elprintf(EL_STATUS, "Prot emu startup");
- PicoCartMemSetup = carthw_sprot_mem_setup;
- PicoCartUnloadHook = carthw_sprot_unload;
- }
- /* Protection emulation for Lion King 3. Credits go to Haze */
- static u8 prot_lk3_cmd, prot_lk3_data;
- static u32 PicoRead8_plk3(u32 a)
- {
- u32 d = 0;
- switch (prot_lk3_cmd) {
- case 1: d = prot_lk3_data >> 1; break;
- case 2: // nibble rotate
- d = ((prot_lk3_data >> 4) | (prot_lk3_data << 4)) & 0xff;
- break;
- case 3: // bit rotate
- d = prot_lk3_data;
- d = (d >> 4) | (d << 4);
- d = ((d & 0xcc) >> 2) | ((d & 0x33) << 2);
- d = ((d & 0xaa) >> 1) | ((d & 0x55) << 1);
- break;
- /* Top Fighter 2000 MK VIII (Unl)
- case 0x98: d = 0x50; break; // prot_lk3_data == a8 here
- case 0x67: d = 0xde; break; // prot_lk3_data == 7b here (rot!)
- case 0xb5: d = 0x9f; break; // prot_lk3_data == 4a
- */
- default:
- elprintf(EL_UIO, "unhandled prot cmd %02x @%06x", prot_lk3_cmd, SekPc);
- break;
- }
- elprintf(EL_UIO, "prot r8 [%06x] %02x @%06x", a, d, SekPc);
- return d;
- }
- static void PicoWrite8_plk3p(u32 a, u32 d)
- {
- elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc);
- if (a & 2)
- prot_lk3_cmd = d;
- else
- prot_lk3_data = d;
- }
- static void PicoWrite8_plk3b(u32 a, u32 d)
- {
- int addr;
- elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc);
- addr = d << 15;
- if (addr + 0x8000 > Pico.romsize) {
- elprintf(EL_UIO|EL_ANOMALY, "prot_lk3: bank too large: %02x", d);
- return;
- }
- if (addr == 0)
- memcpy(Pico.rom, Pico.rom + Pico.romsize, 0x8000);
- else
- memcpy(Pico.rom, Pico.rom + addr, 0x8000);
- }
- static void carthw_prot_lk3_mem_setup(void)
- {
- cpu68k_map_set(m68k_read8_map, 0x600000, 0x7fffff, PicoRead8_plk3, 1);
- cpu68k_map_set(m68k_write8_map, 0x600000, 0x6fffff, PicoWrite8_plk3p, 1);
- cpu68k_map_set(m68k_write8_map, 0x700000, 0x7fffff, PicoWrite8_plk3b, 1);
- }
- void carthw_prot_lk3_startup(void)
- {
- int ret;
- elprintf(EL_STATUS, "lk3 prot emu startup");
- // allocate space for bank0 backup
- ret = PicoCartResize(Pico.romsize + 0x8000);
- if (ret != 0) {
- elprintf(EL_STATUS, "OOM");
- return;
- }
- memcpy(Pico.rom + Pico.romsize, Pico.rom, 0x8000);
- PicoCartMemSetup = carthw_prot_lk3_mem_setup;
- }
- // vim:ts=2:sw=2:expandtab
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