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diff --git a/src/mame/drivers/osborne1.cpp b/src/mame/drivers/osborne1.cpp
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-// license:BSD-3-Clause
-// copyright-holders:Wilbert Pol,Vas Crabb
-/***************************************************************************
-
- Osborne-1 driver file
-
-The Osborne-1 memory is divided into 3 "banks".
-
-Bank 1 simply consists of 64KB of RAM. The upper 4KB is used for the lower 8
-bit of video RAM entries.
-
-Bank 2 holds the BIOS ROM and I/O area. Only addresses 0000-3FFF are used
-by bank 2 (4000-FFFF mirrors bank 1). Bank 2 is divided as follows:
-3000-3FFF Nominally unused but acts as mirror of 2000-2FFF
-2C00-2C03 Video PIA
-2A00-2A01 Serial interface
-2900-2903 488 PIA
-2400-2400 SCREEN-PAC (if present)
-2201-2280 Keyboard
-2100-2103 Floppy
-1000-1FFF Nominally unused but acts as read mirror of BIOS ROM
-0000-0FFF BIOS ROM
-
-The logic is actually quite sloppy, and will cause bus fighting under many
-circumstances since it doesn't actually check all four bits, just that two
-are in the desired state.
-
-Bank 3 has the ninth bit needed to complete the full Video RAM. These bits
-are stored at F000-FFFF. Only the highest bit is used.
-
-On bootup bank 2 is active.
-
-Banking is controlled by writes to I/O space. Only two low address bits are
-used, and the value on the data bus is completley ignored.
-00 - Activate bank 2 (also triggered by CPU reset)
-01 - Activate bank 1
-02 - Set BIT 9 signal (map bank 3 into F000-FFFF)
-03 - Clear BIT 9 signal (map bank 1/2 into F000-FFFF)
-
-Selecting between bank 1 and bank 2 is also affected by M1 and IRQACK
-conditions using a set of three flipflops.
-
-The serial speed configuration implements wiring changes recommended in the
-Osborne 1 Technical Manual. There's no way for software to read the
-selected baud rates, so it will always call the low speed "300" and the high
-speed "1200". You as the user have to keep this in mind using the system.
-
-Serial communications can be flaky when 600/2400 is selected. This is not a
-bug in MAME. I've checked and double-checked the schematics to confirm it's
-an original bug. The division ratio from the master clock to the baud rates
-in this mode is effectively 16*24*64 or 16*24*16 giving actual data rates of
-650 baud or 2600 baud, about 8.3% too fast (16*26*64 and 16*26*16 would give
-the correct rates). MAME's bitbanger seems to be able to accept the ACIA
-output at this rate, but the ACIA screws up when consuming data from MAME's
-bitbanger.
-
-Schematics specify a WD1793 floppy controller, but we're using the Fujitsu
-equivalent MB8877 here. Is it known that the original machines used one or
-the other exclusively? In any case MAME emulates them identically.
-
-Installation of the SCREEN-PAC requires the CPU and character generator ROM
-to be transplanted to the add-on board, and cables run to the sockets that
-previously held these chips. It contains additional RAM clocked at twice
-the speed of the main system RAM. Writes to video memory get sent to this
-RAM as well as the main system RAM, so there are actually two live copies
-of video RAM at all times. The SCREEN-PAC supports switching between
-normal and double horizontal resolution (52x24 or 104x24) at exactly 60Hz.
-
-The Nuevo Video board also requires the CPU to be transplanted to it and has
-a pair of RAMs holding a copy of video memory. However it has its own
-character generator ROM, so the mainboard's character generator ROM doesn't
-need to be moved. It doesn't behave like the SCREEN-PAC. It uses a
-Synertek SY6545-1 with its pixel clock derived from a 12.288MHz crystal
-mapped at 0x04/0x05 in I/O space. It runs at 640x240 (80x24) at just below
-60Hz and doesn't allow resolution switching. We don't know how contention
-for video RAM is handled, or whether the CRTC can generate VBL interrupts.
-
-
-TODO:
-
-* Hook up the port direction control bits in the IEEE488 interface properly
- and test it with some emulated peripheral. Also the BIOS can speak
- Centronics parallel over the same physical interface, so this should be
- tested, too.
-
-* Complete emulation of the Nuevo Video board (interrupts, CRTC video RAM
- updates). It would be nice to get a schematic for this.
-
-***************************************************************************/
-
-#include "emu.h"
-#include "includes/osborne1.h"
-
-#include "bus/rs232/rs232.h"
-#include "speaker.h"
-
-#include "softlist.h"
-
-
-static constexpr XTAL MAIN_CLOCK = 15.9744_MHz_XTAL;
-
-
-void osborne1_state::osborne1_mem(address_map &map)
-{
- map(0x0000, 0x0FFF).bankr(m_bank_0xxx).w(FUNC(osborne1_state::bank_0xxx_w));
- map(0x1000, 0x1FFF).bankr(m_bank_1xxx).w(FUNC(osborne1_state::bank_1xxx_w));
- map(0x2000, 0x3FFF).rw(FUNC(osborne1_state::bank_2xxx_3xxx_r), FUNC(osborne1_state::bank_2xxx_3xxx_w));
- map(0x4000, 0xEFFF).ram(); // FIXME: shouldn't this also read/write the RAM in the RAM device?
- map(0xF000, 0xFFFF).bankr(m_bank_fxxx).w(FUNC(osborne1_state::videoram_w));
-}
-
-void osborne1sp_state::osborne1sp_mem(address_map &map)
-{
- osborne1_mem(map);
-
- map(0x2000, 0x3FFF).rw(FUNC(osborne1sp_state::bank_2xxx_3xxx_r), FUNC(osborne1sp_state::bank_2xxx_3xxx_w));
-}
-
-
-void osborne1_state::osborne1_op(address_map &map)
-{
- map(0x0000, 0xFFFF).r(FUNC(osborne1_state::opcode_r));
-}
-
-
-void osborne1_state::osborne1_io(address_map &map)
-{
- map.unmap_value_high();
- map.global_mask(0x03);
-
- map(0x00, 0x03).w(FUNC(osborne1_state::bankswitch_w));
-}
-
-void osborne1nv_state::osborne1nv_io(address_map &map)
-{
- osborne1_io(map);
-
- map.global_mask(0xff); // FIXME: complete guess
-
- map(0x04, 0x04).rw("crtc", FUNC(mc6845_device::status_r), FUNC(mc6845_device::address_w));
- map(0x05, 0x05).rw("crtc", FUNC(mc6845_device::register_r), FUNC(mc6845_device::register_w));
- // seems to be something at 0x06 as well, but no idea what - BIOS writes 0x07 on boot
-}
-
-
-static INPUT_PORTS_START( osborne1 )
- PORT_START("ROW0")
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('[') PORT_CHAR(']')
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR('\'') PORT_CHAR('"')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ENTER) PORT_CODE(KEYCODE_ENTER_PAD) PORT_CHAR(13) PORT_NAME("Return")
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_RSHIFT) PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_SHIFT_2)
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TAB) PORT_CHAR('\t')
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC))
-
- PORT_START("ROW1")
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CODE(KEYCODE_8_PAD) PORT_CHAR('8') PORT_CHAR('*')
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) PORT_CODE(KEYCODE_7_PAD) PORT_CHAR('7') PORT_CHAR('&')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD) PORT_CHAR('6') PORT_CHAR('^')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD) PORT_CHAR('5') PORT_CHAR('%')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD) PORT_CHAR('4') PORT_CHAR('$')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD) PORT_CHAR('3') PORT_CHAR('#')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_2_PAD) PORT_CHAR('2') PORT_CHAR('@')
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_1_PAD) PORT_CHAR('1') PORT_CHAR('!')
-
- PORT_START("ROW2")
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CODE(KEYCODE_9_PAD) PORT_CHAR('9') PORT_CHAR('(')
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CODE(KEYCODE_DEL_PAD) PORT_CHAR('.') PORT_CHAR('>')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CODE(KEYCODE_0_PAD) PORT_CHAR('0') PORT_CHAR(')')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LEFT) PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(UCHAR_MAMEKEY(LEFT))
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP))
-
- PORT_START("ROW3")
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W')
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q')
-
- PORT_START("ROW4")
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K')
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S')
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A')
-
- PORT_START("ROW5")
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X')
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z')
-
- PORT_START("ROW6")
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('+')
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('\\') PORT_CHAR('|')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('_')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN))
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
-
- PORT_START("ROW7")
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) PORT_TOGGLE PORT_NAME("Alpha Lock")
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
-
- PORT_START("RESET")
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F12) PORT_NAME("RESET") PORT_CHANGED_MEMBER(DEVICE_SELF, osborne1_state, reset_key, 0)
- PORT_BIT(0x7F, IP_ACTIVE_LOW, IPT_UNUSED)
-
- PORT_START("CNF")
- PORT_BIT(0xFC, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_CONFNAME(0x03, 0x00, "Serial Speed")
- PORT_CONFSETTING(0x00, "300/1200")
- PORT_CONFSETTING(0x01, "600/2400")
- PORT_CONFSETTING(0x02, "1200/4800")
- PORT_CONFSETTING(0x03, "2400/9600")
-INPUT_PORTS_END
-
-INPUT_PORTS_START( osborne1nv )
- PORT_INCLUDE(osborne1)
-
- PORT_MODIFY("CNF")
- PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_UNUSED)
-INPUT_PORTS_END
-
-
-/*
- * The Osborne-1 supports the following disc formats:
- * - Osborne single density: 40 tracks, 10 sectors per track, 256-byte sectors (100 KByte)
- * - Osborne double density: 40 tracks, 5 sectors per track, 1024-byte sectors (200 KByte)
- * - IBM Personal Computer: 40 tracks, 8 sectors per track, 512-byte sectors (160 KByte)
- * - Xerox 820 Computer: 40 tracks, 18 sectors per track, 128-byte sectors (90 KByte)
- * - DEC 1820 double density: 40 tracks, 9 sectors per track, 512-byte sectors (180 KByte)
- *
- */
-
-static void osborne1_floppies(device_slot_interface &device)
-{
- device.option_add("525sssd", FLOPPY_525_SSSD); // Siemens FDD 100-5, custom Osborne electronics
- device.option_add("525ssdd", FLOPPY_525_QD); // SSDD) // MPI 52(?), custom Osborne electronics
-}
-
-
-/* F4 Character Displayer */
-static const gfx_layout osborne1_charlayout =
-{
- 8, 10, // 8 x 10 characters
- 128, // 128 characters
- 1, // 1 bits per pixel
- { 0 }, // no bitplanes
- // x offsets
- { 0, 1, 2, 3, 4, 5, 6, 7 },
- // y offsets
- { 0*128*8, 1*128*8, 2*128*8, 3*128*8, 4*128*8, 5*128*8, 6*128*8, 7*128*8, 8*128*8, 9*128*8 },
- 8 // every char takes 16 x 1 bytes
-};
-
-static GFXDECODE_START( gfx_osborne1 )
- GFXDECODE_ENTRY("chargen", 0x0000, osborne1_charlayout, 0, 1)
-GFXDECODE_END
-
-
-void osborne1_state::osborne1_base(machine_config &config)
-{
- Z80(config, m_maincpu, MAIN_CLOCK/4);
- m_maincpu->set_addrmap(AS_PROGRAM, &osborne1_state::osborne1_mem);
- m_maincpu->set_addrmap(AS_OPCODES, &osborne1_state::osborne1_op);
- m_maincpu->set_addrmap(AS_IO, &osborne1_state::osborne1_io);
- m_maincpu->irqack_cb().set(FUNC(osborne1_state::irqack_w));
-
- SCREEN(config, m_screen, SCREEN_TYPE_RASTER, rgb_t::green());
-
- GFXDECODE(config, m_gfxdecode, "palette", gfx_osborne1);
- PALETTE(config, "palette", palette_device::MONOCHROME_HIGHLIGHT);
-
- SPEAKER(config, "mono").front_center();
- SPEAKER_SOUND(config, m_speaker);
- m_speaker->add_route(ALL_OUTPUTS, "mono", 1.00);
-
- PIA6821(config, m_pia0);
- m_pia0->readpa_handler().set(m_ieee, FUNC(ieee488_device::dio_r));
- m_pia0->readpb_handler().set(FUNC(osborne1_state::ieee_pia_pb_r));
- m_pia0->writepa_handler().set(m_ieee, FUNC(ieee488_device::host_dio_w));
- m_pia0->writepb_handler().set(FUNC(osborne1_state::ieee_pia_pb_w));
- m_pia0->ca2_handler().set(m_ieee, FUNC(ieee488_device::host_ifc_w));
- m_pia0->cb2_handler().set(m_ieee, FUNC(ieee488_device::host_ren_w));
- m_pia0->irqa_handler().set(FUNC(osborne1_state::ieee_pia_irq_a_func));
-
- IEEE488(config, m_ieee, 0);
- m_ieee->srq_callback().set(m_pia0, FUNC(pia6821_device::ca2_w));
-
- PIA6821(config, m_pia1);
- m_pia1->writepa_handler().set(FUNC(osborne1_state::video_pia_port_a_w));
- m_pia1->writepb_handler().set(FUNC(osborne1_state::video_pia_port_b_w));
- m_pia1->cb2_handler().set(FUNC(osborne1_state::video_pia_out_cb2_dummy));
- m_pia1->irqa_handler().set(FUNC(osborne1_state::video_pia_irq_a_func));
-
- ACIA6850(config, m_acia);
- m_acia->txd_handler().set("rs232", FUNC(rs232_port_device::write_txd));
- m_acia->rts_handler().set("rs232", FUNC(rs232_port_device::write_rts));
- m_acia->irq_handler().set(FUNC(osborne1_state::serial_acia_irq_func));
-
- rs232_port_device &rs232(RS232_PORT(config, "rs232", default_rs232_devices, nullptr));
- rs232.rxd_handler().set(m_acia, FUNC(acia6850_device::write_rxd));
- rs232.dcd_handler().set(m_acia, FUNC(acia6850_device::write_dcd));
- rs232.cts_handler().set(m_acia, FUNC(acia6850_device::write_cts));
- rs232.ri_handler().set(m_pia1, FUNC(pia6821_device::ca2_w));
-
- MB8877(config, m_fdc, MAIN_CLOCK/16);
- m_fdc->set_force_ready(true);
- FLOPPY_CONNECTOR(config, m_floppy0, osborne1_floppies, "525ssdd", floppy_image_device::default_mfm_floppy_formats);
- FLOPPY_CONNECTOR(config, m_floppy1, osborne1_floppies, "525ssdd", floppy_image_device::default_mfm_floppy_formats);
-
- // internal ram
- RAM(config, m_ram).set_default_size("68K"); // 64kB main RAM and 4kbit video attribute RAM
-
- SOFTWARE_LIST(config, "flop_list").set_original("osborne1");
-}
-
-void osborne1_state::osborne1(machine_config &config)
-{
- osborne1_base(config);
-
- m_screen->set_screen_update(FUNC(osborne1_state::screen_update));
- m_screen->set_raw(MAIN_CLOCK / 2, 512, 0, 52 * 8, 260, 0, 24 * 10);
- m_screen->screen_vblank().set(m_pia1, FUNC(pia6821_device::ca1_w));
- m_screen->set_palette("palette");
- m_screen->set_video_attributes(VIDEO_UPDATE_SCANLINE | VIDEO_ALWAYS_UPDATE);
-}
-
-void osborne1sp_state::osborne1sp(machine_config &config)
-{
- osborne1_base(config);
-
- m_maincpu->set_addrmap(AS_PROGRAM, &osborne1sp_state::osborne1sp_mem);
-
- m_screen->set_screen_update(FUNC(osborne1sp_state::screen_update));
- m_screen->set_raw(MAIN_CLOCK, 1024, 0, 104 * 8, 260, 0, 24 * 10);
- m_screen->screen_vblank().set(m_pia1, FUNC(pia6821_device::ca1_w));
- m_screen->set_palette("palette");
- m_screen->set_video_attributes(VIDEO_UPDATE_SCANLINE | VIDEO_ALWAYS_UPDATE);
-}
-
-void osborne1nv_state::osborne1nv(machine_config &config)
-{
- osborne1_base(config);
-
- m_maincpu->set_addrmap(AS_IO, &osborne1nv_state::osborne1nv_io);
-
- m_screen->set_screen_update("crtc", FUNC(mc6845_device::screen_update));
- m_screen->set_raw(12.288_MHz_XTAL, (96 + 1) * 8, 0, 80 * 8, ((25 + 1) * 10) + 4, 0, 24 * 10);
- m_screen->screen_vblank().set(m_pia1, FUNC(pia6821_device::ca1_w)); // FIXME: AFAICT the PIA gets this from the (vestigial) onboard video circuitry
-
- sy6545_1_device &crtc(SY6545_1(config, "crtc", 12.288_MHz_XTAL / 8));
- crtc.set_screen(m_screen);
- crtc.set_show_border_area(false);
- crtc.set_char_width(8);
- crtc.set_update_row_callback(FUNC(osborne1nv_state::crtc_update_row));
- crtc.set_on_update_addr_change_callback(FUNC(osborne1nv_state::crtc_update_addr_changed));
-}
-
-
-ROM_START( osborne1 )
- ROM_DEFAULT_BIOS("ver144")
- ROM_SYSTEM_BIOS( 0, "vera", "BIOS version A" )
- ROM_SYSTEM_BIOS( 1, "ver12", "BIOS version 1.2" )
- ROM_SYSTEM_BIOS( 2, "ver121", "BIOS version 1.2.1" )
- ROM_SYSTEM_BIOS( 3, "ver13", "BIOS version 1.3" )
- ROM_SYSTEM_BIOS( 4, "ver14", "BIOS version 1.4" )
- ROM_SYSTEM_BIOS( 5, "ver143", "BIOS version 1.43" )
- ROM_SYSTEM_BIOS( 6, "ver144", "BIOS version 1.44" )
-
- ROM_REGION( 0x1000, "maincpu", 0 )
- ROMX_LOAD( "osba.bin", 0x0000, 0x1000, NO_DUMP, ROM_BIOS(0) )
- ROMX_LOAD( "osb12.bin", 0x0000, 0x1000, NO_DUMP, ROM_BIOS(1) )
- ROMX_LOAD( "osb121.bin", 0x0000, 0x1000, NO_DUMP, ROM_BIOS(2) )
- ROMX_LOAD( "osb13.bin", 0x0000, 0x1000, NO_DUMP, ROM_BIOS(3) )
- ROMX_LOAD( "rev1.40.ud11", 0x0000, 0x1000, CRC(3d966335) SHA1(0c60b97a3154a75868efc6370d26995eadc7d927), ROM_BIOS(4) )
- ROMX_LOAD( "rev1.43.ud11", 0x0000, 0x1000, CRC(91a48e3c) SHA1(c37b83f278d21e6e92d80f9c057b11f7f22d88d4), ROM_BIOS(5) )
- ROMX_LOAD( "3a10082-00rev-e.ud11", 0x0000, 0x1000, CRC(c0596b14) SHA1(ee6a9cc9be3ddc5949d3379351c1d58a175ce9ac), ROM_BIOS(6) )
-
- ROM_REGION( 0x800, "chargen", 0 )
- ROMX_LOAD( "char.ua15", 0x0000, 0x800, CRC(5297c109) SHA1(e1a59d87edd66e6c226102cb0688e9cb74dbb594), ROM_BIOS(0) ) // this is CHRROM from v1.4 BIOS MB
- ROMX_LOAD( "char.ua15", 0x0000, 0x800, CRC(5297c109) SHA1(e1a59d87edd66e6c226102cb0688e9cb74dbb594), ROM_BIOS(1) )
- ROMX_LOAD( "char.ua15", 0x0000, 0x800, CRC(5297c109) SHA1(e1a59d87edd66e6c226102cb0688e9cb74dbb594), ROM_BIOS(2) )
- ROMX_LOAD( "char.ua15", 0x0000, 0x800, CRC(5297c109) SHA1(e1a59d87edd66e6c226102cb0688e9cb74dbb594), ROM_BIOS(3) )
- ROMX_LOAD( "char.ua15", 0x0000, 0x800, CRC(5297c109) SHA1(e1a59d87edd66e6c226102cb0688e9cb74dbb594), ROM_BIOS(4) )
- ROMX_LOAD( "7a3007-00.ud15", 0x0000, 0x800, CRC(6c1eab0d) SHA1(b04459d377a70abc9155a5486003cb795342c801), ROM_BIOS(5) )
- ROMX_LOAD( "7a3007-00.ud15", 0x0000, 0x800, CRC(6c1eab0d) SHA1(b04459d377a70abc9155a5486003cb795342c801), ROM_BIOS(6) )
-ROM_END
-
-#define rom_osborne1sp rom_osborne1
-
-ROM_START( osborne1nv )
- ROM_REGION(0x1000, "maincpu", 0)
- ROM_LOAD( "monrom-rev1.51-12.ud11", 0x0000, 0x1000, CRC(298da402) SHA1(7fedd070936ccfe98f96d6e0ac71689666da79cb) )
-
- ROM_REGION( 0x0800, "chargen", 0 )
- ROM_LOAD( "7a3007-00.ud15", 0x0000, 0x800, CRC(6c1eab0d) SHA1(b04459d377a70abc9155a5486003cb795342c801) )
-
- ROM_REGION( 0x0800, "nuevo", 0 )
- ROM_LOAD( "character_generator_6-29-84.14", 0x0000, 0x800, CRC(6c1eab0d) SHA1(b04459d377a70abc9155a5486003cb795342c801) )
-ROM_END
-
-// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
-COMP( 1981, osborne1, 0, 0, osborne1, osborne1, osborne1_state, empty_init, "Osborne", "Osborne-1", MACHINE_SUPPORTS_SAVE )
-COMP( 1983, osborne1sp, osborne1, 0, osborne1sp, osborne1, osborne1sp_state, empty_init, "Osborne", "Osborne-1 with SCREEN-PAC", MACHINE_SUPPORTS_SAVE )
-COMP( 1984, osborne1nv, osborne1, 0, osborne1nv, osborne1nv, osborne1nv_state, empty_init, "Osborne/Nuevo", "Osborne-1 (Nuevo Video)", MACHINE_SUPPORTS_SAVE )