// license:BSD-3-Clause // copyright-holders:AJR /**************************************************************************** Skeleton driver for TeleVideo Model 924 terminal. ****************************************************************************/ #include "emu.h" //#include "bus/rs232/rs232.h" #include "cpu/m6502/m6502.h" #include "cpu/mcs48/mcs48.h" #include "machine/mc68681.h" //#include "machine/nvram.h" #include "video/scn2674.h" #include "screen.h" class tv924_state : public driver_device { public: tv924_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_pvtc(*this, "pvtc") { } void tv924(machine_config &config); private: SCN2672_DRAW_CHARACTER_MEMBER(draw_character); void mem_map(address_map &map); void char_map(address_map &map); required_device m_maincpu; required_device m_pvtc; }; SCN2672_DRAW_CHARACTER_MEMBER(tv924_state::draw_character) { } void tv924_state::mem_map(address_map &map) { map(0x0000, 0x07ff).ram(); map(0x2020, 0x202f).rw("duart", FUNC(scn2681_device::read), FUNC(scn2681_device::write)); map(0x2030, 0x2037).rw(m_pvtc, FUNC(scn2672_device::read), FUNC(scn2672_device::write)); map(0x8000, 0x9fff).ram(); map(0xa000, 0xbfff).rom().region("program", 0x0000); map(0xe000, 0xffff).rom().region("program", 0x2000); } void tv924_state::char_map(address_map &map) { map(0x0000, 0x3fff).ram(); } static INPUT_PORTS_START(tv924) INPUT_PORTS_END void tv924_state::tv924(machine_config &config) { M6502(config, m_maincpu, 1'723'560); // R6502AP (clock guessed) m_maincpu->set_addrmap(AS_PROGRAM, &tv924_state::mem_map); I8049(config, "kbdc", 5.7143_MHz_XTAL).set_disable(); scn2681_device &duart(SCN2681(config, "duart", 3.6864_MHz_XTAL)); // SCN2681A duart.irq_cb().set_inputline(m_maincpu, m6502_device::IRQ_LINE); screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); screen.set_raw(27'576'960, 848 * 2, 0, 640 * 2, 271, 0, 250); screen.set_screen_update("pvtc", FUNC(scn2672_device::screen_update)); SCN2672(config, m_pvtc, 1'723'560); // SCN2672A (with SCB2673B + AMI gate arrays 130170-00 and 130180-00) m_pvtc->set_screen("screen"); m_pvtc->set_character_width(16); // nominally 8, but with half-dot shifting m_pvtc->set_addrmap(0, &tv924_state::char_map); m_pvtc->set_display_callback(FUNC(tv924_state::draw_character)); m_pvtc->intr_callback().set_inputline(m_maincpu, m6502_device::NMI_LINE); } ROM_START(tv924) ROM_REGION(0x4000, "program", 0) ROM_LOAD("180001-53e_924_u14_12_18_84_e.bin", 0x0000, 0x2000, CRC(9129e555) SHA1(2977f5a8153b474d1fff4bec17952562277f86a4)) ROM_LOAD("180001-54e_924_u21_12_18_84_e.bin", 0x2000, 0x2000, CRC(fa2cf28d) SHA1(9cb461b2ba2a7bf44467d5fbc5358c9caaa60024)) ROM_REGION(0x1000, "chargen", 0) ROM_LOAD("350_rn_118_2333-5006_8000142.u10", 0x0000, 0x1000, NO_DUMP) // VTI 24-pin mask ROM ROM_REGION(0x800, "kbdc", 0) ROM_LOAD("d8049hc.bin", 0x000, 0x800, NO_DUMP) ROM_END COMP(1984, tv924, 0, 0, tv924, tv924, tv924_state, empty_init, "TeleVideo Systems", "TeleVideo 924 Video Display Terminal", MACHINE_IS_SKELETON)