// license:BSD-3-Clause // copyright-holders: /*********************************************************************************************************************************** Skeleton driver for Qume QVT-201 & QVT-202 display terminals. ************************************************************************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" #include "machine/input_merger.h" #include "machine/mc68681.h" #include "machine/nvram.h" #include "video/scn2674.h" #include "screen.h" class qvt201_state : public driver_device { public: qvt201_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_screen(*this, "screen") , m_p_chargen(*this, "chargen") , m_dataram(*this, "dataram") , m_attram(*this, "attram") { } void qvt201(machine_config &config); private: SCN2672_DRAW_CHARACTER_MEMBER(draw_character); DECLARE_WRITE8_MEMBER(offset_w); DECLARE_WRITE8_MEMBER(keyboard_w); DECLARE_READ8_MEMBER(keyboard_r); void mem_map(address_map &map); required_device m_maincpu; required_device m_screen; required_region_ptr m_p_chargen; required_shared_ptr m_dataram; required_shared_ptr m_attram; }; SCN2672_DRAW_CHARACTER_MEMBER(qvt201_state::draw_character) { } WRITE8_MEMBER(qvt201_state::offset_w) { } WRITE8_MEMBER(qvt201_state::keyboard_w) { } READ8_MEMBER(qvt201_state::keyboard_r) { return 1; } void qvt201_state::mem_map(address_map &map) { map(0x0000, 0x7fff).rom().region("maincpu", 0); map(0x8800, 0x8fff).ram().share("nvram"); map(0x9000, 0x9007).rw("crtc", FUNC(scn2672_device::read), FUNC(scn2672_device::write)); map(0x9800, 0x980f).rw("duart", FUNC(scn2681_device::read), FUNC(scn2681_device::write)); map(0xa000, 0xa000).w(this, FUNC(qvt201_state::offset_w)); map(0xa800, 0xa800).w(this, FUNC(qvt201_state::keyboard_w)); map(0xb000, 0xb000).r(this, FUNC(qvt201_state::keyboard_r)); map(0xc000, 0xdfff).ram().share("dataram"); map(0xe000, 0xffff).ram().share("attram"); } static INPUT_PORTS_START( qvt201 ) INPUT_PORTS_END MACHINE_CONFIG_START(qvt201_state::qvt201) MCFG_DEVICE_ADD("maincpu", Z80, XTAL(3'686'400)) MCFG_DEVICE_PROGRAM_MAP(mem_map) // IORQ is not used at all MCFG_INPUT_MERGER_ANY_HIGH("mainint") // open collector MCFG_INPUT_MERGER_OUTPUT_HANDLER(INPUTLINE("maincpu", 0)) MCFG_DEVICE_ADD("duart", SCN2681, XTAL(3'686'400)) // XTAL not directly connected MCFG_MC68681_IRQ_CALLBACK(WRITELINE("mainint", input_merger_device, in_w<1>)) MCFG_NVRAM_ADD_0FILL("nvram") MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_RAW_PARAMS(XTAL(48'654'000) / 3, 102 * 10, 0, 80 * 10, 265, 0, 250) //MCFG_SCREEN_RAW_PARAMS(XTAL(48'654'000) / 2, 170 * 9, 0, 132 * 9, 265, 0, 250) MCFG_SCREEN_UPDATE_DEVICE("crtc", scn2672_device, screen_update) MCFG_DEVICE_ADD("crtc", SCN2672, XTAL(48'654'000) / 30) MCFG_SCN2672_CHARACTER_WIDTH(10) // 9 in 132-column mode MCFG_SCN2672_INTR_CALLBACK(WRITELINE("mainint", input_merger_device, in_w<0>)) MCFG_VIDEO_SET_SCREEN("screen") MACHINE_CONFIG_END /************************************************************************************************************** Qume QVT-201. Chips: Z80A, SCN2681A, SCN2672B, 4x HM6116P-2, D446C-2, button battery Crystals: (from schematics, unreadable on photo) 48.654 MHz (Y1), 3.6864 MHz (Y2) Board is marked QVT-202 LB10 REV2 74 6 26. Printed label on PCB: 301488-02 REV.2 MFG:607 QC:PASS ***************************************************************************************************************/ ROM_START( qvt201 ) ROM_REGION(0x8000, "maincpu", 0) // "Program Contents ©1986 Qume Corp." ROM_LOAD( "390410-002.u11", 0x0000, 0x4000, CRC(69337561) SHA1(022e49bf5e8d76a3c2cc5af65630d3f77cc32bc1) ) ROM_LOAD( "390410-001.u10", 0x4000, 0x4000, CRC(977cc138) SHA1(a019980ea6da2dce53617bced420014ab4e03ec8) ) ROM_REGION(0x1000, "chargen", 0) ROM_LOAD( "301847-01.u42", 0x0000, 0x1000, CRC(546ed236) SHA1(312d57a7012f50327310bd11bda000149f13342e) ) ROM_END COMP( 1986, qvt201, 0, 0, qvt201, qvt201, qvt201_state, empty_init, "Qume", "QVT-201 (Rev. T201VE)", MACHINE_IS_SKELETON )