// license:BSD-3-Clause // copyright-holders:Angelo Salese, Dirk Best /*************************************************************************** Mitsubishi MULTI-16 series MULTI-16 (1982, 1983 for S models) - 8088, 4 MHz - 8041 (MCU), 8253 (PIT), 8259A (PIC), MB8866 (FDC) - MP-1601 (128 KB RAM, 32 KB VRAM, monochrome, 1x 5.25") - MP-1602 (192 KB RAM, 32 KB VRAM, monochrome, 2x 5.25") - MP-1605 (256 KB RAM, 96 KB VRAM, 8 colors, 2x 5.25") - MP-1601S (8087, 128 KB RAM, 32 KB VRAM, monochrome, 1x 5.25") - MP-1602S (8087, 192 KB RAM, 32 KB VRAM, monochrome, 2x 5.25") - MP-1605S (8087, 256 KB RAM, 96 KB VRAM, 8 colors, 2x 5.25") - MP-1622 (8087, 192 KB RAM, 32 KB VRAM, monochrome, 2x 8") - MP-1625 (8087, 256 KB RAM, 96 KB VRAM, 8 colors, 2x 8") MULTI-16 II (1984) - 8086, 8 MHz - MP-1642 (256 KB RAM, 64 KB VRAM, monochrome, 2x 5.25") - MP-1645 (256 KB RAM, 192 KB VRAM, 8 colors, 2x 5.25") MULTI-16 IV (1986) - 80286, 8 MHz - MP-1652-A20 (512 KB RAM, 128 KB VRAM, monochrome, 2x 5.25") - MP-1652-A22 (512 KB RAM, 128 KB VRAM, monochrome, 2x 5.25", 20 MB HDD) - MP-1655-A20 (512 KB RAM, 384 KB VRAM, 8 colors, 2x 5.25") - MP-1655-A22 (512 KB RAM, 384 KB VRAM, 8 colors, 2x 5.25", 20 MB HDD) The IPL dump we currently have seems to be from the MP-1645. ****************************************************************************/ #include "emu.h" #include "cpu/i86/i86.h" #include "machine/pic8259.h" #include "machine/pit8253.h" #include "machine/wd_fdc.h" #include "video/mc6845.h" #include "imagedev/floppy.h" #include "emupal.h" #include "screen.h" class multi16_state : public driver_device { public: multi16_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu"), m_pic(*this, "pic"), m_pit(*this, "pit"), m_crtc(*this, "crtc"), m_palette(*this, "palette"), m_fdc(*this, "fdc"), m_floppy(*this, "fdc:%u", 0U), m_vram(*this, "vram") { } void multi16(machine_config &config); protected: virtual void machine_start() override; virtual void machine_reset() override; private: required_device m_maincpu; required_device m_pic; required_device m_pit; required_device m_crtc; required_device m_palette; required_device m_fdc; required_device_array m_floppy; required_shared_ptr m_vram; MC6845_UPDATE_ROW(crtc_update_row); void multi16_io(address_map &map); void multi16_map(address_map &map); }; MC6845_UPDATE_ROW(multi16_state::crtc_update_row) { uint8_t *vram = reinterpret_cast(m_vram.target()); for (int i = 0; i < x_count; i++) { offs_t offs = ((ra & 1) << 14) + (ma << 3) + ((ra >> 1) * 80) + i; // vram is from c0000 to effff, the ipl uses the last half uint8_t data_r = vram[3 * 0x8000 + offs]; uint8_t data_g = vram[4 * 0x8000 + offs]; uint8_t data_b = vram[5 * 0x8000 + offs]; // draw 8 pixels of the character for (int x = 0; x < 8; x++) { int color = 0; color |= BIT(data_r, 7 - x) << 0; color |= BIT(data_g, 7 - x) << 1; color |= BIT(data_b, 7 - x) << 2; bitmap.pix32(y, x + i * 8) = m_palette->pens()[color]; } } } void multi16_state::multi16_map(address_map &map) { map.unmap_value_high(); map(0x00000, 0x3ffff).ram(); map(0x40000, 0x7ffff).noprw(); map(0xc0000, 0xeffff).ram().share("vram"); map(0xf0000, 0xf3fff).mirror(0xc000).rom().region("ipl", 0); } void multi16_state::multi16_io(address_map &map) { map.unmap_value_high(); // map(0x02, 0x03) // ? // map(0x06, 0x06) // ? // map(0x07, 0x07) // ? // map(0x08, 0x0b) // ? map(0x0c, 0x0f).rw(m_pit, FUNC(pit8253_device::read), FUNC(pit8253_device::write)); map(0x40, 0x40).w(m_crtc, FUNC(hd6845s_device::address_w)); map(0x41, 0x41).rw(m_crtc, FUNC(hd6845s_device::register_r), FUNC(hd6845s_device::register_w)); // map(0x42, 0x44) // ? // map(0x48, 0x48) // ? // map(0x4e, 0x4e) // ? // map(0x82, 0x82) // ? // map(0x92, 0x92) // ? } /* Input ports */ static INPUT_PORTS_START( multi16 ) INPUT_PORTS_END void multi16_state::machine_start() { } void multi16_state::machine_reset() { } static void multi16_floppies(device_slot_interface &device) { device.option_add("525qd", FLOPPY_525_QD); } void multi16_state::multi16(machine_config &config) { I8086(config, m_maincpu, 8000000); m_maincpu->set_addrmap(AS_PROGRAM, &multi16_state::multi16_map); m_maincpu->set_addrmap(AS_IO, &multi16_state::multi16_io); m_maincpu->set_irq_acknowledge_callback("pic", FUNC(pic8259_device::inta_cb)); PIC8259(config, m_pic); m_pic->out_int_callback().set_inputline(m_maincpu, 0); PIT8253(config, m_pit); // video hardware screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); screen.set_raw(16000000, 848, 0, 640, 518, 0, 400); // unknown clock screen.set_screen_update("crtc", FUNC(hd6845s_device::screen_update)); PALETTE(config, m_palette, palette_device::RGB_3BIT); HD6845S(config, m_crtc, 2000000); // unknown clock m_crtc->set_screen("screen"); m_crtc->set_show_border_area(false); m_crtc->set_char_width(8); m_crtc->set_update_row_callback(FUNC(multi16_state::crtc_update_row)); // floppy MB8866(config, m_fdc, 2000000); FLOPPY_CONNECTOR(config, m_floppy[0], multi16_floppies, "525qd", floppy_image_device::default_floppy_formats); FLOPPY_CONNECTOR(config, m_floppy[1], multi16_floppies, nullptr, floppy_image_device::default_floppy_formats); } /* ROM definition */ // MULTI16MODEL2-24 ROM_START( multi16 ) ROM_REGION16_LE( 0x4000, "ipl", ROMREGION_ERASEFF ) ROM_LOAD("ipl.rom", 0x0000, 0x4000, CRC(5beb5e94) SHA1(d3b9dc9a08995a0f26af9671893417e795370306)) ROM_REGION(0x20000, "kanji", 0) ROM_LOAD("kanji.rom", 0x00000, 0x20000, NO_DUMP) ROM_END /* Driver */ // YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS COMP( 1984, multi16, 0, 0, multi16, multi16, multi16_state, empty_init, "Mitsubishi", "MULTI 16-II MP-1645", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)