// 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 "bus/rs232/rs232.h" #include "machine/input_merger.h" #include "machine/mc68681.h" #include "machine/nvram.h" #include "video/scn2674.h" #include "emupal.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_mainnmi(*this, "mainnmi") , m_eia(*this, "eia") , 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); DECLARE_WRITE8_MEMBER(duart_out_w); void mem_map(address_map &map); required_device m_maincpu; required_device m_mainnmi; required_device m_eia; 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; } WRITE8_MEMBER(qvt201_state::duart_out_w) { // OP0 = RTS (EIA pin 4) // OP1 = DTR (EIA pin 20) // OP2 not used? // OP3 = 132/_80 // OP4 = SRV // OP5 = BLOCK/_UL // OP6 = preset MBC NMI flipflop // OP7 = _DATA/TALK (EIA pin 14) m_eia->write_rts(BIT(data, 0)); m_eia->write_dtr(BIT(data, 1)); m_mainnmi->in_w<1>(!BIT(data, 6)); } 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(FUNC(qvt201_state::offset_w)); map(0xa800, 0xa800).w(FUNC(qvt201_state::keyboard_w)); map(0xb000, 0xb000).r(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 static const gfx_layout char_layout = { 8,10, RGN_FRAC(1,1), // 256 1, { 0 }, { STEP8(0,1) }, { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8 }, 8*16 }; // ascii control code chars // those are also at 0x80 to 0x9f in the normal char decode // don't know why they are duplicated here static const gfx_layout ctrl_char_layout = { 8,10, RGN_FRAC(1,4), // 32 1, { 0 }, { STEP8(0,1) }, { 10*8, 11*8, 12*8, 13*8, 14*8, 16*8+10*8, 16*8+11*8, 16*8+12*8, 16*8+13*8, 16*8+14*8 }, 8*32 }; // 64 bytes of data remain undecoded // byte 10 and 11 from 0x400 to 0x7ff in the rom // (0x000 to 0x3ff are the control chars above, 0x800 to 0xfff is 0xff) static GFXDECODE_START(chars) GFXDECODE_ENTRY("chargen", 0, char_layout, 0, 1) GFXDECODE_ENTRY("chargen", 0, ctrl_char_layout, 0, 1) GFXDECODE_END void qvt201_state::qvt201(machine_config &config) { Z80(config, m_maincpu, 3.6864_MHz_XTAL); m_maincpu->set_addrmap(AS_PROGRAM, &qvt201_state::mem_map); // IORQ is not used at all input_merger_device &mainint(INPUT_MERGER_ANY_HIGH(config, "mainint")); // open collector mainint.output_handler().set_inputline("maincpu", INPUT_LINE_IRQ0); input_merger_device &mainnmi(INPUT_MERGER_ALL_HIGH(config, "mainnmi")); mainnmi.output_handler().set_inputline("maincpu", INPUT_LINE_NMI); scn2681_device &duart(SCN2681(config, "duart", 3.6864_MHz_XTAL)); // XTAL not directly connected duart.irq_cb().set("mainint", FUNC(input_merger_device::in_w<1>)); duart.a_tx_cb().set(m_eia, FUNC(rs232_port_device::write_txd)); duart.b_tx_cb().set("aux", FUNC(rs232_port_device::write_txd)); duart.outport_cb().set(FUNC(qvt201_state::duart_out_w)); RS232_PORT(config, m_eia, default_rs232_devices, nullptr); m_eia->rxd_handler().set("duart", FUNC(scn2681_device::rx_a_w)); rs232_port_device &aux(RS232_PORT(config, "aux", default_rs232_devices, nullptr)); aux.rxd_handler().set("duart", FUNC(scn2681_device::rx_b_w)); aux.dsr_handler().set("duart", FUNC(scn2681_device::ip4_w)); NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); // TC5516APL-2 or uPD446C-2 + battery screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); screen.set_raw(48.654_MHz_XTAL / 3, 102 * 10, 0, 80 * 10, 265, 0, 250); //screen.set_raw(48.654_MHz_XTAL / 2, 170 * 9, 0, 132 * 9, 265, 0, 250); screen.set_screen_update("crtc", FUNC(scn2672_device::screen_update)); PALETTE(config, "palette", palette_device::MONOCHROME_HIGHLIGHT); GFXDECODE(config, "gfxdecode", "palette", chars); scn2672_device &crtc(SCN2672(config, "crtc", 48.654_MHz_XTAL / 30)); crtc.set_character_width(10); // 9 in 132-column mode crtc.intr_callback().set("mainint", FUNC(input_merger_device::in_w<0>)); crtc.breq_callback().set("mainnmi", FUNC(input_merger_device::in_w<0>)); crtc.set_screen("screen"); } /************************************************************************************************************** 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 )