// license: BSD-3-Clause // copyright-holders: Angelo Salese /************************************************************************************************** https://segaretro.org/TC_2000 https://segaretro.org/Truco_%2796 Unknown protection chip, simple strobe write then read **************************************************************************************************/ #include "emu.h" #include "miky.h" DEFINE_DEVICE_TYPE(MEGADRIVE_UNL_TC2000, megadrive_unl_tc2000_device, "megadrive_unl_tc2000", "Megadrive TC2000 cart") megadrive_unl_tc2000_device::megadrive_unl_tc2000_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : megadrive_rom_device(mconfig, MEGADRIVE_UNL_TC2000, tag, owner, clock) { } void megadrive_unl_tc2000_device::device_start() { megadrive_rom_device::device_start(); save_item(NAME(m_prot_latch)); } void megadrive_unl_tc2000_device::device_reset() { megadrive_rom_device::device_reset(); // undefined, initialized by game anyway m_prot_latch = 0; } void megadrive_unl_tc2000_device::cart_map(address_map &map) { // writes often in ROM space, buggy? map(0x00'0000, 0x0f'ffff).bankr(m_rom).nopw(); map(0x10'0000, 0x10'0000).mirror(0x0f'fffe).lr8(NAME([this] () { return m_prot_latch; })); // truco96a map(0x10'0000, 0x10'0000).mirror(0x0f'fff0).lw8(NAME([this] (offs_t offset, u8 data) { (void)data; m_prot_latch = 0x00; })); // tc2000 map(0x10'0008, 0x10'0008).mirror(0x0f'fff0).lw8(NAME([this] (offs_t offset, u8 data) { (void)data; m_prot_latch = 0x50; })); map(0x10'000c, 0x10'000c).mirror(0x0f'fff0).lw8(NAME([this] (offs_t offset, u8 data) { (void)data; m_prot_latch = 0xa0; })); } /* * Futbol Argentino 96 * https://segaretro.org/J.League_Pro_Striker_2/Bootlegs * * Unlike jlps2 saving a league doesn't really work without playing at least one match first. * Is this is based on an undumped earlier rev? (No protection access on that) * * TODO: * - protection not really understood (game does a very small use of it, just expects the read * values to always return fixed values) * */ DEFINE_DEVICE_TYPE(MEGADRIVE_UNL_FUTBOL_ARG96, megadrive_unl_futbol_arg96_device, "megadrive_unl_futbol_arg96", "Megadrive Futbol Argentino 96 cart") megadrive_unl_futbol_arg96_device::megadrive_unl_futbol_arg96_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : megadrive_rom_tplay96_device(mconfig, MEGADRIVE_UNL_FUTBOL_ARG96, tag, owner, clock) { } u16 megadrive_unl_futbol_arg96_device::get_nvram_length() { return 0x2000; } void megadrive_unl_futbol_arg96_device::cart_map(address_map &map) { map(0x00'0000, 0x1f'ffff).mirror(0x20'0000).bankr(m_rom); map(0x20'0000, 0x20'3fff).rw(FUNC(megadrive_unl_futbol_arg96_device::nvram_r), FUNC(megadrive_unl_futbol_arg96_device::nvram_w)); // writes (in this order, always 0): // 4c'6000 x1 // 4c'6400 x1 // 4c'6800 x2 // 4c'6c00 x3 // 4c'7000 x4 map(0x4c'6201, 0x4c'6201).lr8(NAME([] () { return 0xa; })); map(0x4c'6601, 0x4c'6601).lr8(NAME([] () { return 0x9; })); map(0x4c'6a01, 0x4c'6a01).lr8(NAME([] () { return 0x7; })); }