diff options
Diffstat (limited to 'src/mame/esprit/executive10.cpp')
-rw-r--r-- | src/mame/esprit/executive10.cpp | 352 |
1 files changed, 352 insertions, 0 deletions
diff --git a/src/mame/esprit/executive10.cpp b/src/mame/esprit/executive10.cpp new file mode 100644 index 00000000000..8a9397857a9 --- /dev/null +++ b/src/mame/esprit/executive10.cpp @@ -0,0 +1,352 @@ +// license: BSD-3-Clause +// copyright-holders: Dirk Best +/*************************************************************************** + + Esprit Systems Executive 10/102 + + VT102 compatible terminal + + Hardware: + - Intel P8088 + - Intel D8284A + - Intel P8259A-8 + - 2x 2764 EPROM, 1x 2732 EPROM + - SY2128-2 (2k RAM) + - X2212D NOVRAM + - MC68B50P + - SCN2681A + - 14.469 MHz XTAL (near CPU), 3.6864 MHz XTAL (near 2681) + - CRT 9007 + - 2x CRT 9006-135 + - CRT9021A + - 2764 EPROM + - 4x SY2128-2 (8k RAM) + - 21.800 MHz XTAL (near 9007), 16.960 MHz XTAL (near 9007) + - 9 position DIP switch + + TODO: + - Improve rendering (132 columns, smooth scrolling, non-line attributes(?)) + - NOVRAM store/recall + - Printer + - DIP switch + + Notes: + - Other models in this line: 10/51 (IBM 5251), 10/78 (IBM 3278) + - To go online: Enter Set-Up, press 5 for next screen, press 4 to switch + from local to online (no feedback, would be shown on keyboard LEDs) + +***************************************************************************/ + +#include "emu.h" + +#include "executive10_102_kbd.h" + +#include "bus/rs232/rs232.h" +#include "cpu/i86/i86.h" +#include "machine/6850acia.h" +#include "machine/mc68681.h" +#include "machine/pic8259.h" +#include "machine/x2212.h" +#include "video/crt9007.h" + +#include "emupal.h" +#include "multibyte.h" +#include "screen.h" + + +namespace { + + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +class executive10_state : public driver_device +{ +public: + executive10_state(const machine_config &mconfig, device_type type, const char *tag) : + driver_device(mconfig, type, tag), + m_maincpu(*this, "maincpu"), + m_novram(*this, "novram"), + m_pic(*this, "pic"), + m_screen(*this, "screen"), + m_palette(*this, "palette"), + m_vpac(*this, "vpac"), + m_duart(*this, "duart"), + m_acia(*this, "acia"), + m_cram(*this, "cram"), + m_aram(*this, "aram"), + m_chargen(*this, "chargen") + { } + + void executive10(machine_config &config); + +protected: + virtual void machine_start() override ATTR_COLD; + virtual void machine_reset() override ATTR_COLD; + +private: + required_device<i8088_cpu_device> m_maincpu; + required_device<x2212_device> m_novram; + required_device<pic8259_device> m_pic; + required_device<screen_device> m_screen; + required_device<palette_device> m_palette; + required_device<crt9007_device> m_vpac; + required_device<scn2681_device> m_duart; + required_device<acia6850_device> m_acia; + required_shared_ptr<uint8_t> m_cram; + required_shared_ptr<uint8_t> m_aram; + required_region_ptr<uint8_t> m_chargen; + + void mem_map(address_map &map) ATTR_COLD; + void io_map(address_map &map) ATTR_COLD; + + uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); +}; + + +//************************************************************************** +// ADDRESS MAPS +//************************************************************************** + +void executive10_state::mem_map(address_map &map) +{ + map.global_mask(0xffff); + map(0x0000, 0x07ff).ram(); + map(0x2000, 0x2fff).ram().share("cram"); + map(0x4000, 0x4fff).ram().share("aram"); + map(0x6000, 0x60ff).rw(m_novram, FUNC(x2210_device::read), FUNC(x2210_device::write)); + map(0xb000, 0xffff).rom().region("maincpu", 0); +} + +void executive10_state::io_map(address_map &map) +{ + map(0x000, 0x03f).rw(m_vpac, FUNC(crt9007_device::read), FUNC(crt9007_device::write)); + map(0x040, 0x04f).rw(m_duart, FUNC(scn2681_device::read), FUNC(scn2681_device::write)); + map(0x080, 0x080).w(m_acia, FUNC(acia6850_device::control_w)); + map(0x081, 0x081).r(m_acia, FUNC(acia6850_device::status_r)); + map(0x082, 0x082).w(m_acia, FUNC(acia6850_device::data_w)); + map(0x083, 0x083).r(m_acia, FUNC(acia6850_device::data_r)); + map(0x0c0, 0x0c1).rw(m_pic, FUNC(pic8259_device::read), FUNC(pic8259_device::write)); + //map(0x180, 0x180).nopw(); // novram store/recall? +} + + +//************************************************************************** +// INPUT PORT DEFINITIONS +//************************************************************************** + +static INPUT_PORTS_START( executive10 ) +INPUT_PORTS_END + + +//************************************************************************** +// VIDEO EMULATION +//************************************************************************** + +uint32_t executive10_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) +{ + const pen_t *const pen = m_palette->pens(); + + for (int y = 0; y < 25; y++) + { + // f--------------- double height line + // -e-------------- double width line + // --dc------------ unknown + // ----ba9876543210 line address + + uint16_t addr = get_u16le(&m_cram[0xfcc + (y * 2)]); + bool dw = addr & 0xc000; + + uint8_t line_attr = 0x00; + + for (int x = 0; x < (dw ? 40 : 80); x++) + { + uint16_t code = m_cram[(addr & 0x0fff) + x]; + + // move bit 7 to 8 (acs characters) + code = bitswap<9>(code, 7, 8, 6, 5, 4, 3, 2, 1, 0); + + // select 80/132 column character set + code |= 0x80; // fixed 80 columns mode for now + + // 7------- active for line attributes + // -6------ unknown + // --5----- blink + // ---4---- reverse + // ----3--- 0 = blank? + // -----2-- underline + // ------1- unknown + // -------0 highlight + + uint8_t attr = m_aram[(addr & 0x0fff) + x]; + + // new line attribute? + if (BIT(attr, 7)) + line_attr = attr; + + for (int i = 0; i < 12; i++) + { + unsigned char_line = i; + + // adjust rendered line for double height mode + if (BIT(addr, 15)) + char_line = (i / 2) + (BIT(addr, 14) * (12 / 2)); + + uint16_t data = m_chargen[(code << 4) + char_line] << 1; + + // maybe? fixes line drawing characters + if (BIT(data, 8) == 1) + { + if (BIT(data, 1) == 1) + data |= 0x001; + + if (BIT(data, 7) == 0) + data &= ~0x100; + } + + // underline? + if (BIT(line_attr, 2) && i == 10) + data = 0x1ff; + + // reverse? + if (BIT(line_attr, 4)) + data = ~data; + + // blink? + if (BIT(line_attr, 5) && (m_screen->frame_number() & 0x20)) // wrong timing + data = 0x000; + + // cursor? + if (m_vpac->cursor_active(x, y)) + data = ~data; // might be solid instead + + // foreground/background colors + rgb_t fg = BIT(line_attr, 0) ? pen[2] : pen[1]; + rgb_t bg = pen[0]; + + // draw character line + if (dw) + { + for (int p = 0; p < 9; p++) + { + bitmap.pix(y * 12 + i, x * 18 + p * 2 + 0) = BIT(data, 8 - p) ? fg : bg; + bitmap.pix(y * 12 + i, x * 18 + p * 2 + 1) = BIT(data, 8 - p) ? fg : bg; + } + } + else + { + for (int p = 0; p < 9; p++) + bitmap.pix(y * 12 + i, x * 9 + p) = BIT(data, 8 - p) ? fg : bg; + } + } + } + } + + return 0; +} + +static const gfx_layout char_layout = +{ + 8, 12, + RGN_FRAC(1,1), + 1, + { 0 }, + { 0, 1, 2, 3, 4, 5, 6, 7 }, + { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8 }, + 8 * 16 +}; + +static GFXDECODE_START( chars ) + GFXDECODE_ENTRY("chargen", 0, char_layout, 0, 1) +GFXDECODE_END + + +//************************************************************************** +// MACHINE EMULATION +//************************************************************************** + +void executive10_state::machine_start() +{ +} + +void executive10_state::machine_reset() +{ +} + + +//************************************************************************** +// MACHINE DEFINTIONS +//************************************************************************** + +void executive10_state::executive10(machine_config &config) +{ + I8088(config, m_maincpu, 14.469_MHz_XTAL / 3); + m_maincpu->set_addrmap(AS_PROGRAM, &executive10_state::mem_map); + m_maincpu->set_addrmap(AS_IO, &executive10_state::io_map); + m_maincpu->set_irq_acknowledge_callback(m_pic, FUNC(pic8259_device::inta_cb)); + + X2212(config, m_novram); + + PIC8259(config, m_pic); + m_pic->out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); + + SCREEN(config, m_screen, SCREEN_TYPE_RASTER); + m_screen->set_color(rgb_t::green()); + m_screen->set_raw(16.960_MHz_XTAL, 890, 0, 720, 320, 0, 300); // maybe + m_screen->set_screen_update(FUNC(executive10_state::screen_update)); + + PALETTE(config, m_palette, palette_device::MONOCHROME_HIGHLIGHT); + + GFXDECODE(config, "gfxdecode", m_palette, chars); + + CRT9007(config, m_vpac, 16.960_MHz_XTAL / 9); + m_vpac->set_screen("screen"); + m_vpac->set_character_width(9); + m_vpac->int_callback().set(m_pic, FUNC(pic8259_device::ir2_w)); + + SCN2681(config, m_duart, 3.6864_MHz_XTAL); + m_duart->a_tx_cb().set("serial", FUNC(rs232_port_device::write_txd)); + m_duart->outport_cb().set(m_acia, FUNC(acia6850_device::write_rxc)).bit(3); + m_duart->outport_cb().append(m_acia, FUNC(acia6850_device::write_txc)).bit(3); + m_duart->outport_cb().append(m_pic, FUNC(pic8259_device::ir0_w)).bit(4).invert(); + m_duart->outport_cb().append(m_pic, FUNC(pic8259_device::ir1_w)).bit(5).invert(); + + rs232_port_device &serial(RS232_PORT(config, "serial", default_rs232_devices, nullptr)); + serial.rxd_handler().set(m_duart, FUNC(scn2681_device::rx_a_w)); + serial.cts_handler().set(m_duart, FUNC(scn2681_device::ip0_w)); + + ACIA6850(config, m_acia); + m_acia->irq_handler().set(m_pic, FUNC(pic8259_device::ir4_w)); + m_acia->txd_handler().set("kbd", FUNC(executive10_102_kbd_device::rxd_w)); + + executive10_102_kbd_device &kbd(EXECUTIVE10_102_KBD(config, "kbd")); + kbd.txd_cb().set(m_acia, FUNC(acia6850_device::write_rxd)); + kbd.cts_cb().set(m_acia, FUNC(acia6850_device::write_cts)); +} + + +//************************************************************************** +// ROM DEFINITIONS +//************************************************************************** + +ROM_START( exe10102 ) + ROM_REGION(0x5000, "maincpu", 0) + ROM_LOAD("113-03-0.u25", 0x0000, 0x1000, CRC(bf5498d4) SHA1(46a3e832a1ba9a08c1d4938d6c94b2194ef00081)) + ROM_LOAD("113-01-0.u26", 0x1000, 0x2000, CRC(5e6babb3) SHA1(4669107e9cfaba1a697db6e832bc36c8220ee591)) + ROM_LOAD("113-02-0.u27", 0x3000, 0x2000, CRC(05bcd49b) SHA1(fbeac116ded46215644df7db1810f4f9d41e49ca)) + + ROM_REGION(0x2000, "chargen", 0) + ROM_LOAD("111-01-0.u59", 0x0000, 0x2000, CRC(4e54c69f) SHA1(92640a57863c5eab9db6d07c31deebfa3d1dafa5)) +ROM_END + + +} // anonymous namespace + + +//************************************************************************** +// SYSTEM DRIVERS +//************************************************************************** + +// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS +COMP( 1983, exe10102, 0, 0, executive10, executive10, executive10_state, empty_init, "Esprit Systems", "Executive 10/102", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE ) |