// license:BSD-3-Clause // copyright-holders:AJR /*********************************************************************************************************************************** The Visual 100 was the first of the second series of display terminals released by Visual Technology. (The Visual 200 and Visual 210 made up the first series.) It was followed by the Visual 110 (which emulated the Data General Dasher series rather than the DEC VT-100) and the "top of the line" Visual 400. The second 8251 and 8116T seem to have been typically unpopulated. However, the program does include routines to drive these components, which probably would be installed to provide the optional serial printer interface. ***********************************************************************************************************************************/ #include "emu.h" #include "bus/rs232/rs232.h" #include "cpu/z80/z80.h" #include "machine/com8116.h" #include "machine/er1400.h" #include "machine/i8214.h" #include "machine/i8251.h" #include "machine/i8255.h" #include "machine/input_merger.h" #include "video/tms9927.h" #include "screen.h" // character matrix is supposed to be only 7x7, but 15 produces correct timings #define V100_CH_WIDTH 15 class v100_state : public driver_device { public: v100_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_vtac(*this, "vtac") , m_usart(*this, "usart%u", 1) , m_earom(*this, "earom") , m_picu(*this, "picu") , m_modem(*this, "modem") , m_p_chargen(*this, "chargen") , m_videoram(*this, "videoram") , m_key_row(*this, "ROW%u", 0) { } void v100(machine_config &config); private: u8 status_r(); DECLARE_WRITE8_MEMBER(port30_w); DECLARE_READ8_MEMBER(keyboard_r); DECLARE_WRITE8_MEMBER(key_row_w); DECLARE_WRITE8_MEMBER(port48_w); DECLARE_WRITE8_MEMBER(picu_w); template DECLARE_WRITE_LINE_MEMBER(picu_r_w); IRQ_CALLBACK_MEMBER(irq_ack); void ppi_porta_w(u8 data); u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); void io_map(address_map &map); void mem_map(address_map &map); virtual void machine_start() override; required_device m_maincpu; required_device m_screen; required_device m_vtac; required_device_array m_usart; required_device m_earom; required_device m_picu; required_device m_modem; required_region_ptr m_p_chargen; required_shared_ptr m_videoram; optional_ioport_array<16> m_key_row; u8 m_active_row; bool m_video_enable; }; u32 v100_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) { if (m_vtac->screen_reset() || !m_video_enable) { bitmap.fill(rgb_t::black(), cliprect); return 0; } unsigned row0 = cliprect.top() / 10; unsigned x0 = cliprect.left(); unsigned px0 = x0 % V100_CH_WIDTH; unsigned columns = screen.visible_area().width() / V100_CH_WIDTH; u16 start = 0; unsigned y = 0; for (unsigned row = 0; y <= cliprect.bottom(); row++) { start = m_videoram[start] | (m_videoram[(start + 1) & 0xfff] << 8); u16 end = start + ((start & 0x3000) != 0 ? (columns / 2) + 1 : columns); start &= 0xfff; end &= 0xfff; if (row < row0) y += 10; else { unsigned scan = 0; if (row == row0) { scan += cliprect.top() - y; y = cliprect.top(); } while (scan < 10 && y <= cliprect.bottom()) { unsigned x = x0, px = px0, addr = start; u8 gfxdata = m_p_chargen[((m_videoram[addr] & 0x7f) << 4) | scan] << (px0 / 2); while (x <= cliprect.right()) { bitmap.pix(y, x) = BIT(gfxdata, 7) ? rgb_t::white() : rgb_t::black(); x++; px++; if ((px & 1) == 0) gfxdata <<= 1; if (px >= V100_CH_WIDTH) { addr = (addr + 1) & 0xfff; gfxdata = m_p_chargen[((m_videoram[addr] & 0x7f) << 4) | scan]; px = 0; if (addr == end) { while (x <= cliprect.right()) bitmap.pix(y, x++) = rgb_t::black(); break; } } } scan++; y++; } } start = end; } return 0; } void v100_state::machine_start() { m_picu->inte_w(1); m_picu->etlg_w(1); m_usart[1]->write_cts(0); m_active_row = 0; m_video_enable = false; save_item(NAME(m_active_row)); save_item(NAME(m_video_enable)); } u8 v100_state::status_r() { u8 status = 0xc0; status |= m_earom->data_r(); status |= m_modem->dcd_r() << 1; status |= m_modem->si_r() << 2; // SCCD (pin 12) status |= m_modem->ri_r() << 3; return status; } WRITE8_MEMBER(v100_state::port30_w) { // D6 = cursor/text blinking? //logerror("Writing %02X to port 30\n", data); } READ8_MEMBER(v100_state::keyboard_r) { return m_key_row[m_active_row & 15].read_safe(0xff); } WRITE8_MEMBER(v100_state::key_row_w) { m_active_row = data; } WRITE8_MEMBER(v100_state::port48_w) { //logerror("Writing %02X to port 48\n", data); } WRITE8_MEMBER(v100_state::picu_w) { m_picu->b_w((data & 0x0e) >> 1); m_picu->sgs_w(BIT(data, 4)); } template WRITE_LINE_MEMBER(v100_state::picu_r_w) { m_picu->r_w(N, state); } IRQ_CALLBACK_MEMBER(v100_state::irq_ack) { m_maincpu->set_input_line(0, CLEAR_LINE); return (m_picu->a_r() << 1) | 0xf0; } void v100_state::ppi_porta_w(u8 data) { m_vtac->set_clock_scale(BIT(data, 5) ? 0.5 : 1.0); m_screen->set_clock_scale(BIT(data, 5) ? 0.5 : 1.0); m_video_enable = !BIT(data, 7); //logerror("Writing %02X to PPI port A\n", data); } void v100_state::mem_map(address_map &map) { map(0x0000, 0x1fff).rom().region("maincpu", 0); map(0x4000, 0x4fff).ram().share("videoram"); map(0x5000, 0x5fff).ram(); } void v100_state::io_map(address_map &map) { map.global_mask(0xff); map(0x00, 0x0f).w(m_vtac, FUNC(crt5037_device::write)); map(0x10, 0x10).w("brg1", FUNC(com8116_device::stt_str_w)); map(0x12, 0x13).rw("usart1", FUNC(i8251_device::read), FUNC(i8251_device::write)); map(0x14, 0x15).rw("usart2", FUNC(i8251_device::read), FUNC(i8251_device::write)); map(0x16, 0x16).w("brg2", FUNC(com8116_device::stt_str_w)); map(0x20, 0x20).r(FUNC(v100_state::status_r)); map(0x30, 0x30).w(FUNC(v100_state::port30_w)); map(0x40, 0x40).rw(FUNC(v100_state::keyboard_r), FUNC(v100_state::key_row_w)); map(0x48, 0x48).w(FUNC(v100_state::port48_w)); map(0x60, 0x60).w(FUNC(v100_state::picu_w)); map(0x70, 0x73).rw("ppi", FUNC(i8255_device::read), FUNC(i8255_device::write)); } static INPUT_PORTS_START( v100 ) PORT_START("ROW0") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Set-Up") PORT_CODE(KEYCODE_F1) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("ROW1") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('=') PORT_CHAR('+') PORT_CODE(KEYCODE_EQUALS) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('`') PORT_CHAR('~') PORT_CODE(KEYCODE_TILDE) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(']') PORT_CHAR('}') PORT_CODE(KEYCODE_CLOSEBRACE) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('\'') PORT_CHAR('"') PORT_CODE(KEYCODE_QUOTE) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Return") PORT_CHAR(0x0d) PORT_CODE(KEYCODE_ENTER) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Right Shift") PORT_CODE(KEYCODE_RSHIFT) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Line Feed") PORT_CHAR(0x0a) PORT_START("ROW2") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('0') PORT_CHAR(')') PORT_CODE(KEYCODE_0) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('-') PORT_CHAR('_') PORT_CODE(KEYCODE_MINUS) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('p') PORT_CHAR('P') PORT_CODE(KEYCODE_P) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('[') PORT_CHAR('{') PORT_CODE(KEYCODE_OPENBRACE) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('l') PORT_CHAR('L') PORT_CODE(KEYCODE_L) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(';') PORT_CHAR(':') PORT_CODE(KEYCODE_COLON) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('.') PORT_CHAR('>') PORT_CODE(KEYCODE_STOP) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('/') PORT_CHAR('?') PORT_CODE(KEYCODE_SLASH) PORT_START("ROW3") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('8') PORT_CHAR('*') PORT_CODE(KEYCODE_8) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('9') PORT_CHAR('(') PORT_CODE(KEYCODE_9) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('i') PORT_CHAR('I') PORT_CODE(KEYCODE_I) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('o') PORT_CHAR('O') PORT_CODE(KEYCODE_O) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('k') PORT_CHAR('K') PORT_CODE(KEYCODE_K) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('l') PORT_CHAR('L') PORT_CODE(KEYCODE_L) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('m') PORT_CHAR('M') PORT_CODE(KEYCODE_M) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(',') PORT_CHAR('<') PORT_CODE(KEYCODE_COMMA) PORT_START("ROW4") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('6') PORT_CHAR('^') PORT_CODE(KEYCODE_6) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('7') PORT_CHAR('&') PORT_CODE(KEYCODE_7) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('y') PORT_CHAR('Y') PORT_CODE(KEYCODE_Y) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('u') PORT_CHAR('U') PORT_CODE(KEYCODE_U) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('g') PORT_CHAR('G') PORT_CODE(KEYCODE_G) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('h') PORT_CHAR('H') PORT_CODE(KEYCODE_H) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('b') PORT_CHAR('B') PORT_CODE(KEYCODE_B) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('n') PORT_CHAR('N') PORT_CODE(KEYCODE_N) PORT_START("ROW5") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('4') PORT_CHAR('$') PORT_CODE(KEYCODE_4) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('5') PORT_CHAR('%') PORT_CODE(KEYCODE_5) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('r') PORT_CHAR('R') PORT_CODE(KEYCODE_R) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('t') PORT_CHAR('T') PORT_CODE(KEYCODE_T) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('d') PORT_CHAR('D') PORT_CODE(KEYCODE_D) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('f') PORT_CHAR('F') PORT_CODE(KEYCODE_F) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('c') PORT_CHAR('C') PORT_CODE(KEYCODE_C) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('v') PORT_CHAR('V') PORT_CODE(KEYCODE_V) PORT_START("ROW6") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('2') PORT_CHAR('@') PORT_CODE(KEYCODE_2) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('3') PORT_CHAR('#') PORT_CODE(KEYCODE_3) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('w') PORT_CHAR('W') PORT_CODE(KEYCODE_W) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('e') PORT_CHAR('E') PORT_CODE(KEYCODE_E) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('a') PORT_CHAR('A') PORT_CODE(KEYCODE_A) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('s') PORT_CHAR('S') PORT_CODE(KEYCODE_S) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('z') PORT_CHAR('Z') PORT_CODE(KEYCODE_Z) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('x') PORT_CHAR('X') PORT_CODE(KEYCODE_X) PORT_START("ROW7") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(0x1b) PORT_CODE(KEYCODE_ESC) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('1') PORT_CHAR('!') PORT_CODE(KEYCODE_1) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(0x09) PORT_CODE(KEYCODE_TAB) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('q') PORT_CHAR('Q') PORT_CODE(KEYCODE_Q) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_SHIFT_1) PORT_NAME("Left Shift") PORT_CODE(KEYCODE_LSHIFT) PORT_START("ROW8") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(0x08) PORT_CODE(KEYCODE_BACKSPACE) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('\\') PORT_CHAR('|') PORT_CODE(KEYCODE_BACKSLASH) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(' ') PORT_CODE(KEYCODE_SPACE) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("ROW9") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("ROW10") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNKNOWN) INPUT_PORTS_END void v100_state::v100(machine_config &config) { Z80(config, m_maincpu, 47.736_MHz_XTAL / 20); // 2.387 MHz PCLOCK m_maincpu->set_addrmap(AS_PROGRAM, &v100_state::mem_map); m_maincpu->set_addrmap(AS_IO, &v100_state::io_map); m_maincpu->set_irq_acknowledge_callback(FUNC(v100_state::irq_ack)); I8251(config, m_usart[0], 47.736_MHz_XTAL / 20); m_usart[0]->txd_handler().set(m_modem, FUNC(rs232_port_device::write_txd)); m_usart[0]->dtr_handler().set(m_modem, FUNC(rs232_port_device::write_dtr)); m_usart[0]->rts_handler().set(m_modem, FUNC(rs232_port_device::write_rts)); //m_usart[0]->rxrdy_handler().set(FUNC(v100_state::picu_r_w<4>)).invert(); input_merger_device &acts(INPUT_MERGER_ALL_HIGH(config, "acts")); acts.output_handler().set(m_usart[0], FUNC(i8251_device::write_cts)); com8116_device &brg1(COM8116_020(config, "brg1", 1.8432_MHz_XTAL)); brg1.fr_handler().set(m_usart[0], FUNC(i8251_device::write_rxc)); brg1.ft_handler().set(m_usart[0], FUNC(i8251_device::write_txc)); I8251(config, m_usart[1], 47.736_MHz_XTAL / 20); m_usart[1]->txd_handler().set("aux", FUNC(rs232_port_device::write_txd)); m_usart[1]->dtr_handler().set("aux", FUNC(rs232_port_device::write_dtr)); //m_usart[1]->txrdy_handler().set(FUNC(v100_state::picu_r_w<2>)).invert(); com8116_device &brg2(COM8116_020(config, "brg2", 1.8432_MHz_XTAL)); brg2.fr_handler().set(m_usart[1], FUNC(i8251_device::write_rxc)); brg2.ft_handler().set(m_usart[1], FUNC(i8251_device::write_txc)); SCREEN(config, m_screen, SCREEN_TYPE_RASTER); //m_screen->set_raw(47.736_MHz_XTAL / 2, 102 * V100_CH_WIDTH, 0, 80 * V100_CH_WIDTH, 260, 0, 240); m_screen->set_raw(47.736_MHz_XTAL, 170 * V100_CH_WIDTH, 0, 132 * V100_CH_WIDTH, 312, 0, 240); m_screen->set_screen_update(FUNC(v100_state::screen_update)); CRT5037(config, m_vtac, 47.736_MHz_XTAL / V100_CH_WIDTH); m_vtac->set_char_width(V100_CH_WIDTH); m_vtac->set_screen("screen"); m_vtac->hsyn_callback().set(FUNC(v100_state::picu_r_w<7>)).invert(); m_vtac->vsyn_callback().set(FUNC(v100_state::picu_r_w<6>)).invert(); I8214(config, m_picu, 47.736_MHz_XTAL / 20); m_picu->int_wr_callback().set_inputline(m_maincpu, 0, ASSERT_LINE); i8255_device &ppi(I8255(config, "ppi", 0)); ppi.out_pa_callback().set(FUNC(v100_state::ppi_porta_w)); ppi.out_pb_callback().set(m_earom, FUNC(er1400_device::c3_w)).bit(6).invert(); ppi.out_pb_callback().append(m_earom, FUNC(er1400_device::c2_w)).bit(5).invert(); ppi.out_pb_callback().append(m_earom, FUNC(er1400_device::c1_w)).bit(4).invert(); ppi.out_pc_callback().set(m_earom, FUNC(er1400_device::data_w)).bit(6).invert(); ppi.out_pc_callback().append(m_earom, FUNC(er1400_device::clock_w)).bit(0).invert(); ppi.out_pc_callback().append(m_modem, FUNC(rs232_port_device::write_spds)).bit(4); ppi.out_pc_callback().append("acts", FUNC(input_merger_device::in_w<1>)).bit(7); ER1400(config, m_earom); RS232_PORT(config, m_modem, default_rs232_devices, "loopback"); // EIA port m_modem->rxd_handler().set(m_usart[0], FUNC(i8251_device::write_rxd)); m_modem->cts_handler().set("acts", FUNC(input_merger_device::in_w<0>)); m_modem->dcd_handler().set(m_usart[0], FUNC(i8251_device::write_dsr)); rs232_port_device &aux(RS232_PORT(config, "aux", default_rs232_devices, nullptr)); // optional printer port aux.rxd_handler().set(m_usart[1], FUNC(i8251_device::write_rxd)); aux.dcd_handler().set(m_usart[1], FUNC(i8251_device::write_dsr)); // printer busy } /************************************************************************************************************** Visual 100. (VT-100 clone) Chips: D780C-1 (Z80), CRT5037, D8255AC-5, uPB8214C, COM8116T-020, D8251AC, ER1400, 8-sw dip Crystal: 47.736 ***************************************************************************************************************/ ROM_START( v100 ) ROM_REGION(0x2000, "maincpu", 0) ROM_LOAD( "262-047.u108", 0x0000, 0x1000, CRC(e82f708c) SHA1(20ed83a41fd0703d72a20e170af971181cfbd575) ) ROM_LOAD( "262-048.u110", 0x1000, 0x1000, CRC(830923d3) SHA1(108590234ff84b5856cc2784d738a2a625305953) ) ROM_REGION(0x0800, "chargen", 0) ROM_LOAD( "241-001.u29", 0x0000, 0x0800, CRC(ef807141) SHA1(cbf3fed001811c5840b9a131d2d3133843cb3b6a) ) ROM_END COMP( 1980, v100, 0, 0, v100, v100, v100_state, empty_init, "Visual Technology", "Visual 100", MACHINE_IS_SKELETON )