// license:BSD-3-Clause // copyright-holders:AJR /************************************************************************************************************ Skeleton driver for temperature controller by Oxford Instruments Ltd. ************************************************************************************************************/ #include "emu.h" #include "bus/rs232/rs232.h" #include "cpu/z80/z80.h" #include "machine/i8251.h" #include "machine/nvram.h" #include "machine/z80ctc.h" class itc4_state : public driver_device { public: itc4_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") { } void itc4(machine_config &config); private: void mem_map(address_map &map); void io_map(address_map &map); required_device m_maincpu; }; void itc4_state::mem_map(address_map &map) { map(0x0000, 0x3fff).rom().region("program", 0); map(0x8000, 0x87ff).ram().share("nvram"); } void itc4_state::io_map(address_map &map) { map.global_mask(0xff); map(0x78, 0x7b).rw("ctc", FUNC(z80ctc_device::read), FUNC(z80ctc_device::write)); map(0xd8, 0xd9).rw("usart", FUNC(i8251_device::read), FUNC(i8251_device::write)); map(0xb8, 0xbf).noprw(); // 7-segment display? map(0xe8, 0xe8).nopw(); } static INPUT_PORTS_START(itc4) INPUT_PORTS_END static const z80_daisy_config daisy_chain[] = { { "ctc" }, { nullptr } }; void itc4_state::itc4(machine_config &config) { Z80(config, m_maincpu, 8_MHz_XTAL / 2); // Z84C0006PEC m_maincpu->set_addrmap(AS_PROGRAM, &itc4_state::mem_map); m_maincpu->set_addrmap(AS_IO, &itc4_state::io_map); m_maincpu->set_daisy_config(daisy_chain); NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); // DS1220Y z80ctc_device &ctc(Z80CTC(config, "ctc", 8_MHz_XTAL / 2)); // Z84C3006PEC ctc.intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); ctc.set_clk<0>(8_MHz_XTAL / 4); // guess ctc.set_clk<1>(8_MHz_XTAL / 4); // guess ctc.set_clk<2>(8_MHz_XTAL / 4); // guess i8251_device &usart(I8251(config, "usart", 8_MHz_XTAL / 4)); // µPD8251AFC usart.txd_handler().set("rs232", FUNC(rs232_port_device::write_txd)); usart.rts_handler().set("rs232", FUNC(rs232_port_device::write_rts)); usart.dtr_handler().set("rs232", FUNC(rs232_port_device::write_dtr)); rs232_port_device &rs232(RS232_PORT(config, "rs232", default_rs232_devices, nullptr)); rs232.rxd_handler().set("usart", FUNC(i8251_device::write_rxd)); rs232.dsr_handler().set("usart", FUNC(i8251_device::write_dsr)); rs232.cts_handler().set("usart", FUNC(i8251_device::write_cts)); } ROM_START(itc4) ROM_REGION(0x4000, "program", 0) ROM_LOAD("itc4_2.04_70fa.u2", 0x0800, 0x0800, CRC(f2d3f050) SHA1(77947dd9584ffec22c67940582efbeb3e9553e07)) // M27128 ROM_CONTINUE(0x0000, 0x0800) // "(c) OXFORD 1988" ROM_CONTINUE(0x1800, 0x0800) ROM_CONTINUE(0x1000, 0x0800) ROM_CONTINUE(0x2800, 0x0800) ROM_CONTINUE(0x2000, 0x0800) ROM_CONTINUE(0x3800, 0x0800) ROM_CONTINUE(0x3000, 0x0800) ROM_END SYST(1988, itc4, 0, 0, itc4, itc4, itc4_state, empty_init, "Oxford Instruments", "ITC-4 Intelligent Temperature Controller (Version 2.04)", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)