// license:BSD-3-Clause // copyright-holders:AJR /******************************************************************************* Skeleton driver for IKT-5A terminal. *******************************************************************************/ #include "emu.h" //#include "bus/pc_kbd/keyboards.h" //#include "bus/pc_kbd/pc_kbdc.h" //#include "bus/rs232/rs232.h" #include "cpu/mcs51/mcs51.h" #include "machine/eepromser.h" #include "screen.h" class ikt5a_state : public driver_device { public: ikt5a_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_eeprom(*this, "eeprom") , m_chargen(*this, "chargen") { } void ikt5a(machine_config &config); private: u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); void eeprom_w(u8 data); u8 p1_r(); void p1_w(u8 data); u8 p3_r(); void prog_map(address_map &map); void ext_map(address_map &map); required_device m_maincpu; required_device m_eeprom; required_region_ptr m_chargen; }; u32 ikt5a_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) { return 0; } void ikt5a_state::eeprom_w(u8 data) { m_eeprom->cs_write(BIT(data, 6)); m_eeprom->di_write(BIT(data, 3)); m_eeprom->clk_write(BIT(data, 1)); } u8 ikt5a_state::p1_r() { return 0xff; } void ikt5a_state::p1_w(u8 data) { } u8 ikt5a_state::p3_r() { return 0xdf | (m_eeprom->do_read() << 5); } void ikt5a_state::prog_map(address_map &map) { map(0x0000, 0x3fff).rom().region("maincpu", 0); } void ikt5a_state::ext_map(address_map &map) { map(0x6400, 0x6400).mirror(0xff).w(FUNC(ikt5a_state::eeprom_w)); map(0x8000, 0x9fff).ram(); } void ikt5a_state::ikt5a(machine_config &config) { I80C51(config, m_maincpu, 15_MHz_XTAL / 2); // PCB 80C51BH-2 (clock uncertain) m_maincpu->set_addrmap(AS_PROGRAM, &ikt5a_state::prog_map); m_maincpu->set_addrmap(AS_IO, &ikt5a_state::ext_map); m_maincpu->port_in_cb<1>().set(FUNC(ikt5a_state::p1_r)); m_maincpu->port_out_cb<1>().set(FUNC(ikt5a_state::p1_w)); m_maincpu->port_in_cb<3>().set(FUNC(ikt5a_state::p3_r)); EEPROM_93C06_16BIT(config, m_eeprom); // ST M9306B6 screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); screen.set_raw(15_MHz_XTAL, 800, 0, 640, 375, 0, 350); // timings guessed screen.set_screen_update(FUNC(ikt5a_state::screen_update)); screen.screen_vblank().set_inputline(m_maincpu, MCS51_INT0_LINE); } static INPUT_PORTS_START(ikt5a) INPUT_PORTS_END ROM_START(ikt5a) // 80C51 (+xtal 15.000) // 8k ram // RGB external, uses XT keyboard ROM_REGION(0x4000, "maincpu", 0) ROM_LOAD("ver_ih.bin", 0x0000, 0x4000, CRC(5a15b4e8) SHA1(cc0336892279b730f1596f31e129c5a898ecdc8f)) ROM_REGION(0x2000, "chargen", 0) ROM_LOAD("g26.bin", 0x0000, 0x2000, CRC(657668be) SHA1(212a9eb1fb9b9c16f3cc606c6befbd913ddfa395)) ROM_END COMP(1993, ikt5a, 0, 0, ikt5a, ikt5a, ikt5a_state, empty_init, "Creator / Fura Elektronik", "IKT-5A", MACHINE_IS_SKELETON)