// license:LGPL-2.1+ // copyright-holders:Michael Zapf /**************************************************************************** Arcturus sidecar cartridge Michael Zapf *****************************************************************************/ #include "emu.h" #include "arcturus.h" #define LOG_WARN (1U << 1) // Warnings // #define VERBOSE (LOG_GENERAL | LOG_WARN) #include "logmacro.h" #define TI99_CARTSC_4000 "mem4000" #define TI99_CARTSC_A000 "mema000" #define TI99_CARTSC_C000 "memc000" #define TI99_CARTSC_RAM "ram" DEFINE_DEVICE_TYPE(TI99_ARCTURUS, bus::ti99::sidecar::arcturus_device, "ti99_arcturus", "Arcturus sidecar cartridge") namespace bus::ti99::sidecar { /* Constructor called from subclasses. */ arcturus_device::arcturus_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : bus::ti99::internal::ioport_attached_device(mconfig, TI99_ARCTURUS, tag, owner, clock), m_ram(*this, TI99_CARTSC_RAM) { } void arcturus_device::readz(offs_t offset, uint8_t *value) { switch ((offset >> 13)&0x07) { case 0: case 3: case 4: case 7: break; case 1: *value = m_ram->pointer()[offset & 0x07ff]; break; case 2: *value = m_rom4[offset & 0x1fff]; break; case 5: *value = m_roma[offset & 0x1fff]; break; case 6: *value = m_romc[offset & 0x1fff]; break; } } void arcturus_device::write(offs_t offset, uint8_t data) { if (((offset >> 13)&0x07)==1) m_ram->pointer()[offset & 0x07ff] = data; } void arcturus_device::device_start() { m_rom4 = memregion(TI99_CARTSC_4000)->base(); m_roma = memregion(TI99_CARTSC_A000)->base(); m_romc = memregion(TI99_CARTSC_C000)->base(); } ROM_START( ti99_arcturus ) ROM_REGION(0x2000, TI99_CARTSC_4000, 0) ROM_LOAD("arcturus.u1", 0x0000, 0x2000, CRC(28ba65ec) SHA1(63329930c71ef776e8598a8d4c580c41bd52a339)) ROM_REGION(0x2000, TI99_CARTSC_A000, 0) ROM_LOAD("arcturus.u2", 0x0000, 0x2000, CRC(91e6910a) SHA1(51c1f75d4e9d74af21c0b43188fc0ffc4a3ad4c0)) ROM_REGION(0x2000, TI99_CARTSC_C000, 0) ROM_LOAD("arcturus.u3", 0x0000, 0x2000, CRC(e9ce9f4e) SHA1(65850c57e9480a5d8bdd852692f18d0162ca1406)) ROM_END void arcturus_device::device_add_mconfig(machine_config& config) { RAM(config, TI99_CARTSC_RAM).set_default_size("2K").set_default_value(0); } const tiny_rom_entry *arcturus_device::device_rom_region() const { return ROM_NAME( ti99_arcturus ); } } // end namespace bus::ti99::peb