/*********************************************************************************************************** PC-Engine & Turbografx-16 cart emulation ***********************************************************************************************************/ #include "emu.h" #include "pce_rom.h" //------------------------------------------------- // pce_rom_device - constructor //------------------------------------------------- const device_type PCE_ROM_STD = &device_creator; const device_type PCE_ROM_CDSYS3 = &device_creator; const device_type PCE_ROM_POPULOUS = &device_creator; const device_type PCE_ROM_SF2 = &device_creator; pce_rom_device::pce_rom_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source) : device_t(mconfig, type, name, tag, owner, clock, shortname, source), device_pce_cart_interface( mconfig, *this ) { } pce_rom_device::pce_rom_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, PCE_ROM_STD, "PCE & TG16 Carts", tag, owner, clock, "pce_rom", __FILE__), device_pce_cart_interface( mconfig, *this ) { } pce_cdsys3_device::pce_cdsys3_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : pce_rom_device(mconfig, PCE_ROM_CDSYS3, "PCE & TG16 CD-System Cart v3.00", tag, owner, clock, "pce_cdsys3", __FILE__) { } pce_populous_device::pce_populous_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : pce_rom_device(mconfig, PCE_ROM_POPULOUS, "PCE Populous Cart", tag, owner, clock, "pce_populous", __FILE__) { } pce_sf2_device::pce_sf2_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : pce_rom_device(mconfig, PCE_ROM_SF2, "PCE Street Fighters 2 Cart", tag, owner, clock, "pce_sf2", __FILE__) { } //------------------------------------------------- // mapper specific start/reset //------------------------------------------------- void pce_sf2_device::device_start() { save_item(NAME(m_bank_base)); } void pce_sf2_device::device_reset() { m_bank_base = 0; } /*------------------------------------------------- mapper specific handlers -------------------------------------------------*/ READ8_MEMBER(pce_rom_device::read_cart) { int bank = offset / 0x20000; return m_rom[rom_bank_map[bank] * 0x20000 + (offset & 0x1ffff)]; } READ8_MEMBER(pce_cdsys3_device::read_cart) { int bank = offset / 0x20000; if (m_ram && offset >= 0xd0000) return m_ram[offset - 0xd0000]; return m_rom[rom_bank_map[bank] * 0x20000 + (offset & 0x1ffff)]; } WRITE8_MEMBER(pce_cdsys3_device::write_cart) { if (m_ram && offset >= 0xd0000) m_ram[offset - 0xd0000] = data; } READ8_MEMBER(pce_populous_device::read_cart) { int bank = offset / 0x20000; if (m_ram && offset >= 0x80000 && offset < 0x88000) return m_ram[offset & 0x7fff]; return m_rom[rom_bank_map[bank] * 0x20000 + (offset & 0x1ffff)]; } WRITE8_MEMBER(pce_populous_device::write_cart) { if (m_ram && offset >= 0x80000 && offset < 0x88000) m_ram[offset & 0x7fff] = data; } READ8_MEMBER(pce_sf2_device::read_cart) { if (offset < 0x80000) return m_rom[offset]; else return m_rom[0x80000 + m_bank_base * 0x80000 + (offset & 0x7ffff)]; } WRITE8_MEMBER(pce_sf2_device::write_cart) { if (offset >= 0x1ff0 && offset < 0x1ff4) m_bank_base = offset & 3; }