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Diffstat (limited to 'src/mame/drivers/osborne1.cpp')
-rw-r--r-- | src/mame/drivers/osborne1.cpp | 429 |
1 files changed, 0 insertions, 429 deletions
diff --git a/src/mame/drivers/osborne1.cpp b/src/mame/drivers/osborne1.cpp deleted file mode 100644 index f806a9194b4..00000000000 --- a/src/mame/drivers/osborne1.cpp +++ /dev/null @@ -1,429 +0,0 @@ -// 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 ) |