// license:BSD-3-Clause // copyright-holders:Curt Coder /*************************************************************************** Xerox 820 12/05/2009 Skeleton driver. ****************************************************************************/ /* TODO: - Xerox 820 - floppy format has 3xcd at the end of track data :u109: write track 0 :u109: track description 16xff ... 109xff 3xcd - Xerox 820-II - floppy (read/write to FDC triggers Z80 WAIT) - Winchester - Shugart SA1004 (chs=256,4,40 ss=256) - Shugart SA606 (chs=160,6, ss=256) - Shugart SA1403D controller - Xerox 16/8 - Emerald Microware X120 board - type in Monitor v1.0 from manual - proper keyboard emulation (MCU?) http://users.telenet.be/lust/Xerox820/index.htm http://www.classiccmp.org/dunfield/img41867/system.htm http://www.microcodeconsulting.com/z80/plus2.htm Note: - MK-82 have same roms as original Big Board - MK-83 have 256K of RAM */ #include "includes/xerox820.h" #include "bus/rs232/rs232.h" #define KEYBOARD_TAG "keyboard" /* Read/Write Handlers */ void xerox820_state::bankswitch(int bank) { address_space &program = m_maincpu->space(AS_PROGRAM); UINT8 *ram = m_ram->pointer(); if (bank) { /* ROM */ program.install_rom(0x0000, 0x0fff, m_rom->base()); program.unmap_readwrite(0x1000, 0x1fff); program.install_ram(0x3000, 0x3fff, m_video_ram); } else { /* RAM */ program.install_ram(0x0000, 0x3fff, ram); } } void xerox820ii_state::bankswitch(int bank) { address_space &program = m_maincpu->space(AS_PROGRAM); UINT8 *ram = m_ram->pointer(); if (bank) { /* ROM */ program.install_rom(0x0000, 0x17ff, m_rom->base()); program.unmap_readwrite(0x1800, 0x2fff); program.install_ram(0x3000, 0x3fff, m_video_ram); program.unmap_readwrite(0x4000, 0xbfff); } else { /* RAM */ program.install_ram(0x0000, 0xbfff, ram); } } READ8_MEMBER( xerox820_state::fdc_r ) { return m_fdc->gen_r(offset) ^ 0xff; } WRITE8_MEMBER( xerox820_state::fdc_w ) { m_fdc->gen_w(offset, data ^ 0xff); } WRITE8_MEMBER( xerox820_state::scroll_w ) { m_scroll = (offset >> 8) & 0x1f; } #ifdef UNUSED_CODE WRITE8_MEMBER( xerox820_state::x120_system_w ) { /* bit signal description 0 DSEL0 drive select bit 0 (01=A, 10=B, 00=C, 11=D) 1 DSEL1 drive select bit 1 2 SIDE side select 3 VATT video attribute (0=inverse, 1=blinking) 4 BELL bell trigger 5 DENSITY density (0=double, 1=single) 6 _MOTOR disk motor (0=on, 1=off) 7 BANK memory bank switch (0=RAM, 1=ROM/video) */ } #endif WRITE8_MEMBER( xerox820ii_state::bell_w ) { m_speaker->level_w(offset); } WRITE8_MEMBER( xerox820ii_state::slden_w ) { m_fdc->dden_w(offset); } WRITE8_MEMBER( xerox820ii_state::chrom_w ) { m_chrom = offset; } WRITE8_MEMBER( xerox820ii_state::lowlite_w ) { m_lowlite = data; } WRITE8_MEMBER( xerox820ii_state::sync_w ) { if (offset) { /* set external clocks for synchronous sio A */ } else { /* set internal clocks for asynchronous sio A */ } } /* Memory Maps */ static ADDRESS_MAP_START( xerox820_mem, AS_PROGRAM, 8, xerox820_state ) ADDRESS_MAP_UNMAP_HIGH AM_RANGE(0x3000, 0x3fff) AM_RAM AM_SHARE("video_ram") AM_RANGE(0x4000, 0xffff) AM_RAM ADDRESS_MAP_END static ADDRESS_MAP_START( xerox820_io, AS_IO, 8, xerox820_state ) AM_RANGE(0x00, 0x00) AM_MIRROR(0xff03) AM_DEVWRITE(COM8116_TAG, com8116_device, str_w) AM_RANGE(0x04, 0x07) AM_MIRROR(0xff00) AM_DEVREADWRITE(Z80SIO_TAG, z80sio0_device, ba_cd_r, ba_cd_w) AM_RANGE(0x08, 0x0b) AM_MIRROR(0xff00) AM_DEVREADWRITE(Z80PIO_GP_TAG, z80pio_device, read_alt, write_alt) AM_RANGE(0x0c, 0x0c) AM_MIRROR(0xff03) AM_DEVWRITE(COM8116_TAG, com8116_device, stt_w) AM_RANGE(0x10, 0x13) AM_MIRROR(0xff00) AM_READWRITE(fdc_r, fdc_w) AM_RANGE(0x14, 0x14) AM_MIRROR(0xff03) AM_MASK(0xff00) AM_WRITE(scroll_w) AM_RANGE(0x18, 0x1b) AM_MIRROR(0xff00) AM_DEVREADWRITE(Z80CTC_TAG, z80ctc_device, read, write) AM_RANGE(0x1c, 0x1f) AM_MIRROR(0xff00) AM_DEVREADWRITE(Z80PIO_KB_TAG, z80pio_device, read_alt, write_alt) ADDRESS_MAP_END static ADDRESS_MAP_START( xerox820ii_mem, AS_PROGRAM, 8, xerox820ii_state ) ADDRESS_MAP_UNMAP_HIGH AM_RANGE(0x3000, 0x3fff) AM_RAM AM_SHARE("video_ram") AM_RANGE(0xc000, 0xffff) AM_RAM ADDRESS_MAP_END static ADDRESS_MAP_START( xerox820ii_io, AS_IO, 8, xerox820ii_state ) AM_IMPORT_FROM(xerox820_io) AM_RANGE(0x28, 0x29) AM_MIRROR(0xff00) AM_WRITE(bell_w) AM_RANGE(0x30, 0x31) AM_MIRROR(0xff00) AM_WRITE(slden_w) AM_RANGE(0x34, 0x35) AM_MIRROR(0xff00) AM_WRITE(chrom_w) AM_RANGE(0x36, 0x36) AM_MIRROR(0xff00) AM_WRITE(lowlite_w) AM_RANGE(0x68, 0x69) AM_MIRROR(0xff00) AM_WRITE(sync_w) ADDRESS_MAP_END static ADDRESS_MAP_START( xerox168_mem, AS_PROGRAM, 16, xerox820ii_state ) AM_RANGE(0x00000, 0x3ffff) AM_RAM AM_RANGE(0xff000, 0xfffff) AM_ROM AM_REGION(I8086_TAG, 0) ADDRESS_MAP_END static ADDRESS_MAP_START( mk83_mem, AS_PROGRAM, 8, xerox820_state ) ADDRESS_MAP_UNMAP_HIGH AM_RANGE(0x3000, 0x6fff) AM_RAM AM_RANGE(0x7000, 0x7fff) AM_RAM AM_SHARE("video_ram") AM_RANGE(0x8000, 0xffff) AM_RAM ADDRESS_MAP_END /* Input Ports */ static INPUT_PORTS_START( xerox820 ) // inputs defined in machine/keyboard.c INPUT_PORTS_END TIMER_CALLBACK_MEMBER( bigboard_state::bigboard_beepoff ) { m_beeper->set_state(0); } /* Z80 PIO */ READ8_MEMBER( xerox820_state::kbpio_pa_r ) { /* bit signal description 0 1 2 3 PBRDY keyboard data available 4 8/N5 8"/5.25" disk select (0=5.25", 1=8") 5 400/460 double sided disk detect (only on Etch 2 PCB) (0=SS, 1=DS) 6 7 */ UINT8 data = 0; // keyboard data |= m_kbpio->rdy_b() << 3; // floppy data |= m_8n5 << 4; data |= m_400_460 << 5; return data; }; WRITE8_MEMBER( xerox820_state::kbpio_pa_w ) { /* bit signal description 0 _DVSEL1 drive select 1 1 _DVSEL2 drive select 2 2 SIDE side select 3 4 5 6 NCSET2 display character set (inverted and connected to chargen A10) 7 BANK bank switching (0=RAM, 1=ROM/videoram) */ /* drive select */ floppy_image_device *floppy = NULL; if (BIT(data, 0)) floppy = m_floppy0->get_device(); if (BIT(data, 1)) floppy = m_floppy1->get_device(); m_fdc->set_floppy(floppy); if (floppy) { int _8n5 = (floppy->get_form_factor() == floppy_image::FF_8); if (m_8n5 != _8n5) { m_8n5 = _8n5; m_fdc->set_unscaled_clock(m_8n5 ? XTAL_20MHz/10 : XTAL_20MHz/20); } m_400_460 = !floppy->twosid_r(); floppy->mon_w(0); floppy->ss_w(BIT(data, 2)); } /* display character set */ m_ncset2 = !BIT(data, 6); /* bank switching */ bankswitch(BIT(data, 7)); } WRITE8_MEMBER( bigboard_state::kbpio_pa_w ) { xerox820_state::kbpio_pa_w(space, offset, data); /* beeper on bigboard */ if (BIT(data, 5) & (!m_bit5)) { machine().scheduler().timer_set(attotime::from_msec(40), timer_expired_delegate(FUNC(bigboard_state::bigboard_beepoff),this)); m_beeper->set_state(1); } m_bit5 = BIT(data, 5); } READ8_MEMBER( xerox820_state::kbpio_pb_r ) { /* bit description 0 KB0 1 KB1 2 KB2 3 KB3 4 KB4 5 KB5 6 KB6 7 KB7 */ return m_keydata; }; static Z80PIO_INTERFACE( xerox820_kbpio_intf ) { DEVCB_CPU_INPUT_LINE(Z80_TAG, INPUT_LINE_IRQ0), /* callback when change interrupt status */ DEVCB_DRIVER_MEMBER(xerox820_state, kbpio_pa_r), /* port A read callback */ DEVCB_DRIVER_MEMBER(xerox820_state, kbpio_pa_w), /* port A write callback */ DEVCB_NULL, /* portA ready active callback */ DEVCB_DRIVER_MEMBER(xerox820_state, kbpio_pb_r), /* port B read callback */ DEVCB_NULL, /* port B write callback */ DEVCB_NULL /* portB ready active callback */ }; static Z80PIO_INTERFACE( xerox820ii_kbpio_intf ) { DEVCB_CPU_INPUT_LINE(Z80_TAG, INPUT_LINE_IRQ0), /* callback when change interrupt status */ DEVCB_DRIVER_MEMBER(xerox820_state, kbpio_pa_r), /* port A read callback */ DEVCB_DRIVER_MEMBER(xerox820_state, kbpio_pa_w), /* port A write callback */ DEVCB_NULL, /* portA ready active callback */ DEVCB_DRIVER_MEMBER(xerox820_state, kbpio_pb_r), /* port B read callback */ DEVCB_NULL, /* port B write callback */ DEVCB_NULL /* portB ready active callback */ }; static Z80PIO_INTERFACE( gppio_intf ) { DEVCB_CPU_INPUT_LINE(Z80_TAG, INPUT_LINE_IRQ0), /* callback when change interrupt status */ DEVCB_NULL, /* port A read callback */ DEVCB_NULL, /* port A write callback */ DEVCB_NULL, /* portA ready active callback */ DEVCB_NULL, /* port B read callback */ DEVCB_NULL, /* port B write callback */ DEVCB_NULL /* portB ready active callback */ }; READ8_MEMBER( xerox820ii_state::rdpio_pb_r ) { /* bit description 0 NBSY 1 NMSG 2 NC/D 3 NREQ 4 NI/O 5 6 LS74 Q 7 */ UINT8 data = 0; data |= !m_sasibus->scsi_bsy_r(); data |= !m_sasibus->scsi_msg_r() << 1; data |= !m_sasibus->scsi_cd_r() << 2; data |= !m_sasibus->scsi_req_r() << 3; data |= !m_sasibus->scsi_io_r() << 4; return data; } WRITE8_MEMBER( xerox820ii_state::rdpio_pb_w ) { /* bit description 0 1 2 3 4 5 NSEL 6 7 NRST */ m_sasibus->scsi_sel_w(!BIT(data, 5)); m_sasibus->scsi_rst_w(!BIT(data, 7)); } WRITE_LINE_MEMBER( xerox820ii_state::rdpio_pardy_w ) { // TODO } static Z80PIO_INTERFACE( rdpio_intf ) { DEVCB_CPU_INPUT_LINE(Z80_TAG, INPUT_LINE_IRQ0), /* callback when change interrupt status */ DEVCB_DEVICE_MEMBER(SASIBUS_TAG ":host", scsicb_device, scsi_data_r), /* port A read callback */ DEVCB_DEVICE_MEMBER(SASIBUS_TAG ":host", scsicb_device, scsi_data_w), /* port A write callback */ DEVCB_DRIVER_LINE_MEMBER(xerox820ii_state, rdpio_pardy_w), /* portA ready active callback */ DEVCB_DRIVER_MEMBER(xerox820ii_state, rdpio_pb_r), /* port B read callback */ DEVCB_DRIVER_MEMBER(xerox820ii_state, rdpio_pb_w), /* port B write callback */ DEVCB_NULL /* portB ready active callback */ }; /* Z80 SIO */ static Z80SIO_INTERFACE( sio_intf ) { 0, 0, 0, 0, DEVCB_DEVICE_LINE_MEMBER(RS232_A_TAG, rs232_port_device, write_txd), DEVCB_DEVICE_LINE_MEMBER(RS232_A_TAG, rs232_port_device, write_dtr), DEVCB_DEVICE_LINE_MEMBER(RS232_A_TAG, rs232_port_device, write_rts), DEVCB_NULL, DEVCB_NULL, DEVCB_DEVICE_LINE_MEMBER(RS232_B_TAG, rs232_port_device, write_txd), DEVCB_DEVICE_LINE_MEMBER(RS232_B_TAG, rs232_port_device, write_dtr), DEVCB_DEVICE_LINE_MEMBER(RS232_B_TAG, rs232_port_device, write_rts), DEVCB_NULL, DEVCB_NULL, DEVCB_CPU_INPUT_LINE(Z80_TAG, INPUT_LINE_IRQ0), DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL }; /* Z80 CTC */ TIMER_DEVICE_CALLBACK_MEMBER( xerox820_state::ctc_tick ) { m_ctc->trg0(1); m_ctc->trg0(0); } static Z80CTC_INTERFACE( ctc_intf ) { DEVCB_CPU_INPUT_LINE(Z80_TAG, INPUT_LINE_IRQ0), /* interrupt handler */ DEVCB_DEVICE_LINE_MEMBER(Z80CTC_TAG, z80ctc_device, trg1), /* ZC/TO0 callback */ DEVCB_NULL, /* ZC/TO1 callback */ DEVCB_DEVICE_LINE_MEMBER(Z80CTC_TAG, z80ctc_device, trg3) /* ZC/TO2 callback */ }; /* Z80 Daisy Chain */ static const z80_daisy_config xerox820_daisy_chain[] = { { Z80SIO_TAG }, { Z80PIO_KB_TAG }, { Z80PIO_GP_TAG }, { Z80CTC_TAG }, { NULL } }; /* WD1771 Interface */ static SLOT_INTERFACE_START( xerox820_floppies ) SLOT_INTERFACE( "sa400", FLOPPY_525_SSSD_35T ) // Shugart SA-400 SLOT_INTERFACE( "sa450", FLOPPY_525_DD ) // Shugart SA-450 SLOT_INTERFACE( "sa800", FLOPPY_8_SSDD ) // Shugart SA-800 SLOT_INTERFACE( "sa850", FLOPPY_8_DSDD ) // Shugart SA-850 SLOT_INTERFACE_END void xerox820_state::update_nmi() { int halt = m_maincpu->state_int(Z80_HALT); int state = (halt && (m_fdc_irq || m_fdc_drq)) ? ASSERT_LINE : CLEAR_LINE; m_maincpu->set_input_line(INPUT_LINE_NMI, state); } void xerox820_state::fdc_intrq_w(bool state) { m_fdc_irq = state; update_nmi(); } void xerox820_state::fdc_drq_w(bool state) { m_fdc_drq = state; update_nmi(); } /* COM8116 Interface */ WRITE_LINE_MEMBER( xerox820_state::fr_w ) { m_sio->rxca_w(state); m_sio->txca_w(state); } WRITE8_MEMBER( xerox820_state::kbd_w ) { m_keydata = ~data; /* strobe in keyboard data */ m_kbpio->strobe_b(0); m_kbpio->strobe_b(1); } static ASCII_KEYBOARD_INTERFACE( keyboard_intf ) { DEVCB_DRIVER_MEMBER(xerox820_state, kbd_w) }; /* Video */ UINT32 xerox820_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) { UINT8 y,ra,chr,gfx; UINT16 sy=0,ma=(m_scroll + 1) * 0x80,x; m_framecnt++; for (y = 0; y < 24; y++) { if (ma > 0xb80) ma = 0; for (ra = 0; ra < 10; ra++) { UINT32 *p = &bitmap.pix32(sy++); for (x = ma; x < ma + 80; x++) { if (ra < 8) { chr = m_video_ram[x & XEROX820_VIDEORAM_MASK] ^ 0x80; /* Take care of flashing characters */ if ((chr < 0x80) && (m_framecnt & 0x08)) chr |= 0x80; /* get pattern of pixels for that character scanline */ gfx = m_char_rom->base()[(m_ncset2 << 10) | (chr<<3) | ra ]; } else gfx = 0xff; /* Display a scanline of a character (7 pixels) */ *p++ = RGB_MONOCHROME_WHITE[0]; *p++ = RGB_MONOCHROME_WHITE[BIT(gfx, 4) ^ 1]; *p++ = RGB_MONOCHROME_WHITE[BIT(gfx, 3) ^ 1]; *p++ = RGB_MONOCHROME_WHITE[BIT(gfx, 2) ^ 1]; *p++ = RGB_MONOCHROME_WHITE[BIT(gfx, 1) ^ 1]; *p++ = RGB_MONOCHROME_WHITE[BIT(gfx, 0) ^ 1]; *p++ = RGB_MONOCHROME_WHITE[0]; } } ma+=128; } return 0; } /* Machine Initialization */ void xerox820_state::machine_start() { // floppy callbacks m_fdc->setup_intrq_cb(wd_fdc_t::line_cb(FUNC(xerox820_state::fdc_intrq_w), this)); m_fdc->setup_drq_cb(wd_fdc_t::line_cb(FUNC(xerox820_state::fdc_drq_w), this)); // state saving save_item(NAME(m_keydata)); save_item(NAME(m_scroll)); save_item(NAME(m_ncset2)); save_item(NAME(m_vatt)); save_item(NAME(m_fdc_irq)); save_item(NAME(m_fdc_drq)); save_item(NAME(m_8n5)); save_item(NAME(m_400_460)); } void xerox820_state::machine_reset() { bankswitch(1); m_fdc->reset(); } void bigboard_state::machine_reset() { bankswitch(1); /* bigboard has a one-pulse output to drive a user-supplied beeper */ m_beeper->set_state(0); m_beeper->set_frequency(950); m_fdc->reset(); } void xerox820ii_state::machine_reset() { bankswitch(1); m_fdc->reset(); } /* static LEGACY_FLOPPY_OPTIONS_START( xerox820 ) LEGACY_FLOPPY_OPTION( sssd8, "dsk", "8\" SSSD", basicdsk_identify_default, basicdsk_construct_default, NULL, HEADS([1]) TRACKS([77]) SECTORS([26]) SECTOR_LENGTH([128]) FIRST_SECTOR_ID([1])) LEGACY_FLOPPY_OPTION( ssdd8, "dsk", "8\" SSDD", basicdsk_identify_default, basicdsk_construct_default, NULL, HEADS([1]) TRACKS([77]) SECTORS([26]) SECTOR_LENGTH([256]) FIRST_SECTOR_ID([1])) LEGACY_FLOPPY_OPTION( sssd5, "dsk", "5.25\" SSSD", basicdsk_identify_default, basicdsk_construct_default, NULL, HEADS([1]) TRACKS([40]) SECTORS([18]) SECTOR_LENGTH([128]) FIRST_SECTOR_ID([1])) LEGACY_FLOPPY_OPTION( ssdd5, "dsk", "5.25\" SSDD", basicdsk_identify_default, basicdsk_construct_default, NULL, HEADS([2]) TRACKS([40]) SECTORS([18]) SECTOR_LENGTH([128]) FIRST_SECTOR_ID([1])) LEGACY_FLOPPY_OPTIONS_END */ /* F4 Character Displayer */ static const gfx_layout xerox820_charlayout = { 8, 8, /* 8 x 8 characters */ 256, /* 256 characters */ 1, /* 1 bits per pixel */ { 0 }, /* no bitplanes */ /* x offsets */ { 0, 1, 2, 3, 4, 5, 6, 7 }, /* y offsets */ { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 }, 8*8 /* every char takes 8 bytes */ }; static const gfx_layout xerox820_gfxlayout = { 8, 8, /* 8 x 8 characters */ 256, /* 256 characters */ 1, /* 1 bits per pixel */ { 0 }, /* no bitplanes */ /* x offsets */ { 0, 1, 2, 3, 4, 5, 6, 7 }, /* y offsets */ { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 }, 8*8 /* every char takes 8 bytes */ }; static GFXDECODE_START( xerox820 ) GFXDECODE_ENTRY( "chargen", 0x0000, xerox820_charlayout, 0, 1 ) GFXDECODE_END static GFXDECODE_START( xerox820ii ) GFXDECODE_ENTRY( "chargen", 0x0000, xerox820_charlayout, 0, 1 ) GFXDECODE_ENTRY( "chargen", 0x0800, xerox820_gfxlayout, 0, 1 ) GFXDECODE_END /* Machine Drivers */ static MACHINE_CONFIG_START( xerox820, xerox820_state ) /* basic machine hardware */ MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_20MHz/8) MCFG_CPU_PROGRAM_MAP(xerox820_mem) MCFG_CPU_IO_MAP(xerox820_io) MCFG_CPU_CONFIG(xerox820_daisy_chain) /* video hardware */ MCFG_SCREEN_ADD(SCREEN_TAG, RASTER) MCFG_SCREEN_UPDATE_DRIVER(xerox820_state, screen_update) MCFG_SCREEN_RAW_PARAMS(XTAL_10_69425MHz, 700, 0, 560, 260, 0, 240) MCFG_GFXDECODE_ADD("gfxdecode", xerox820) /* devices */ MCFG_Z80PIO_ADD(Z80PIO_KB_TAG, XTAL_20MHz/8, xerox820_kbpio_intf) MCFG_Z80PIO_ADD(Z80PIO_GP_TAG, XTAL_20MHz/8, gppio_intf) MCFG_Z80CTC_ADD(Z80CTC_TAG, XTAL_20MHz/8, ctc_intf) //MCFG_TIMER_DRIVER_ADD_PERIODIC("ctc", xerox820_state, ctc_tick, attotime::from_hz(XTAL_20MHz/8)) MCFG_FD1771x_ADD(FD1771_TAG, XTAL_20MHz/20) MCFG_FLOPPY_DRIVE_ADD(FD1771_TAG":0", xerox820_floppies, "sa400", floppy_image_device::default_floppy_formats) MCFG_FLOPPY_DRIVE_ADD(FD1771_TAG":1", xerox820_floppies, "sa400", floppy_image_device::default_floppy_formats) MCFG_Z80SIO0_ADD(Z80SIO_TAG, XTAL_20MHz/8, sio_intf) MCFG_RS232_PORT_ADD(RS232_A_TAG, default_rs232_devices, NULL) MCFG_RS232_RXD_HANDLER(DEVWRITELINE(Z80SIO_TAG, z80sio0_device, rxa_w)) MCFG_RS232_PORT_ADD(RS232_B_TAG, default_rs232_devices, NULL) MCFG_RS232_RXD_HANDLER(DEVWRITELINE(Z80SIO_TAG, z80sio0_device, rxb_w)) MCFG_DEVICE_ADD(COM8116_TAG, COM8116, XTAL_5_0688MHz) MCFG_COM8116_FR_HANDLER(WRITELINE(xerox820_state, fr_w)) MCFG_COM8116_FT_HANDLER(DEVWRITELINE(Z80SIO_TAG, z80dart_device, rxtxcb_w)) MCFG_ASCII_KEYBOARD_ADD(KEYBOARD_TAG, keyboard_intf) /* internal ram */ MCFG_RAM_ADD(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("64K") // software lists MCFG_SOFTWARE_LIST_ADD("flop_list", "xerox820") MACHINE_CONFIG_END static MACHINE_CONFIG_DERIVED_CLASS( bigboard, xerox820, bigboard_state ) /* sound hardware */ MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD("beeper", BEEP, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00) /* bigboard only */ MACHINE_CONFIG_END static MACHINE_CONFIG_START( xerox820ii, xerox820ii_state ) /* basic machine hardware */ MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_16MHz/4) MCFG_CPU_PROGRAM_MAP(xerox820ii_mem) MCFG_CPU_IO_MAP(xerox820ii_io) MCFG_CPU_CONFIG(xerox820_daisy_chain) /* video hardware */ MCFG_SCREEN_ADD(SCREEN_TAG, RASTER) MCFG_SCREEN_UPDATE_DRIVER(xerox820ii_state, screen_update) MCFG_SCREEN_RAW_PARAMS(XTAL_10_69425MHz, 700, 0, 560, 260, 0, 240) MCFG_GFXDECODE_ADD("gfxdecode", xerox820ii) /* sound hardware */ MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50) /* devices */ MCFG_Z80PIO_ADD(Z80PIO_KB_TAG, XTAL_16MHz/4, xerox820ii_kbpio_intf) MCFG_Z80PIO_ADD(Z80PIO_GP_TAG, XTAL_16MHz/4, gppio_intf) MCFG_Z80PIO_ADD(Z80PIO_RD_TAG, XTAL_20MHz/8, rdpio_intf) MCFG_Z80CTC_ADD(Z80CTC_TAG, XTAL_16MHz/4, ctc_intf) //MCFG_TIMER_DRIVER_ADD_PERIODIC("ctc", xerox820_state, ctc_tick, attotime::from_hz(XTAL_16MHz/4)) MCFG_FD1797x_ADD(FD1797_TAG, XTAL_16MHz/8) MCFG_FLOPPY_DRIVE_ADD(FD1797_TAG":0", xerox820_floppies, "sa450", floppy_image_device::default_floppy_formats) MCFG_FLOPPY_DRIVE_ADD(FD1797_TAG":1", xerox820_floppies, "sa450", floppy_image_device::default_floppy_formats) MCFG_Z80SIO0_ADD(Z80SIO_TAG, XTAL_16MHz/4, sio_intf) MCFG_RS232_PORT_ADD(RS232_A_TAG, default_rs232_devices, NULL) MCFG_RS232_RXD_HANDLER(DEVWRITELINE(Z80SIO_TAG, z80sio0_device, rxa_w)) MCFG_RS232_PORT_ADD(RS232_B_TAG, default_rs232_devices, NULL) MCFG_RS232_RXD_HANDLER(DEVWRITELINE(Z80SIO_TAG, z80sio0_device, rxb_w)) MCFG_DEVICE_ADD(COM8116_TAG, COM8116, XTAL_5_0688MHz) MCFG_COM8116_FR_HANDLER(WRITELINE(xerox820_state, fr_w)) MCFG_COM8116_FT_HANDLER(DEVWRITELINE(Z80SIO_TAG, z80dart_device, rxtxcb_w)) MCFG_ASCII_KEYBOARD_ADD(KEYBOARD_TAG, keyboard_intf) // SASI bus MCFG_SCSIBUS_ADD(SASIBUS_TAG) MCFG_SCSIDEV_ADD(SASIBUS_TAG ":harddisk0", SA1403D, SCSI_ID_0) MCFG_SCSICB_ADD(SASIBUS_TAG ":host") /* internal ram */ MCFG_RAM_ADD(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("64K") // software lists MCFG_SOFTWARE_LIST_ADD("flop_list", "xerox820ii") MACHINE_CONFIG_END static MACHINE_CONFIG_DERIVED( xerox168, xerox820ii ) MCFG_CPU_ADD(I8086_TAG, I8086, 4770000) MCFG_CPU_PROGRAM_MAP(xerox168_mem) /* internal ram */ MCFG_RAM_MODIFY(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("192K") MCFG_RAM_EXTRA_OPTIONS("320K") MACHINE_CONFIG_END static MACHINE_CONFIG_DERIVED( mk83, xerox820 ) MCFG_CPU_MODIFY(Z80_TAG) MCFG_CPU_PROGRAM_MAP(mk83_mem) MACHINE_CONFIG_END /* ROMs */ ROM_START( bigboard ) ROM_REGION( 0x1000, Z80_TAG, 0 ) ROM_LOAD( "bigboard.u67", 0x0000, 0x0800, CRC(5a85a228) SHA1(d51a2cbd0aae80315bda9530275aabfe8305364e)) ROM_REGION( 0x800, "chargen", 0 ) ROM_LOAD( "bigboard.u73", 0x0000, 0x0800, CRC(10bf0d81) SHA1(7ec73670a4d9d6421a5d6a4c4edc8b7c87923f6c) ) ROM_END #define rom_mk82 rom_bigboard ROM_START( x820 ) ROM_REGION( 0x1000, Z80_TAG, 0 ) ROM_DEFAULT_BIOS( "v20" ) ROM_SYSTEM_BIOS( 0, "v10", "Xerox Monitor v1.0" ) ROMX_LOAD( "x820v10.u64", 0x0000, 0x0800, NO_DUMP, ROM_BIOS(1) ) ROMX_LOAD( "x820v10.u63", 0x0800, 0x0800, NO_DUMP, ROM_BIOS(1) ) ROM_SYSTEM_BIOS( 1, "v20", "Xerox Monitor v2.0" ) ROMX_LOAD( "x820v20.u64", 0x0000, 0x0800, CRC(2fc227e2) SHA1(b4ea0ae23d281a687956e8a514cb364a1372678e), ROM_BIOS(2) ) ROMX_LOAD( "x820v20.u63", 0x0800, 0x0800, CRC(bc11f834) SHA1(4fd2b209a6e6ff9b0c41800eb5228c34a0d7f7ef), ROM_BIOS(2) ) ROM_SYSTEM_BIOS( 2, "smart23", "MICROCode SmartROM v2.3" ) ROMX_LOAD( "mxkx25a.u64", 0x0000, 0x0800, CRC(7ec5f100) SHA1(5d0ff35a51aa18afc0d9c20ef99ff5d9d3f2075b), ROM_BIOS(3) ) ROMX_LOAD( "mxkx25b.u63", 0x0800, 0x0800, CRC(a7543798) SHA1(886e617e1003d13f86f33085cbd49391b77291a3), ROM_BIOS(3) ) ROM_SYSTEM_BIOS( 3, "plus2", "MICROCode Plus2 v0.2a" ) ROMX_LOAD( "p2x25a.u64", 0x0000, 0x0800, CRC(3ccd7a8f) SHA1(6e46c88f03fc7289595dd6bec95e23bb13969525), ROM_BIOS(4) ) ROMX_LOAD( "p2x25b.u63", 0x0800, 0x0800, CRC(1e580391) SHA1(e91f8ce82586df33c0d6d02eb005e8079f4de67d), ROM_BIOS(4) ) ROM_REGION( 0x800, "chargen", 0 ) ROM_LOAD( "x820.u92", 0x0000, 0x0800, CRC(b823fa98) SHA1(ad0ea346aa257a53ad5701f4201896a2b3a0f928) ) ROM_REGION( 0x800, "keyboard", 0 ) ROM_LOAD( "keyboard", 0x0000, 0x0800, NO_DUMP ) ROM_END ROM_START( x820ii ) ROM_REGION( 0x1800, Z80_TAG, 0 ) ROM_DEFAULT_BIOS( "v404" ) ROM_SYSTEM_BIOS( 0, "v404", "Balcones Operating System v4.04" ) ROMX_LOAD( "537p3652.u33", 0x0000, 0x0800, CRC(7807cfbb) SHA1(bd3cc5cc5c59c84a50747aae5c17eb4617b0dbc3), ROM_BIOS(1) ) ROMX_LOAD( "537p3653.u34", 0x0800, 0x0800, CRC(a9c6c0c3) SHA1(c2da9d1bf0da96e6b8bfa722783e411d2fe6deb9), ROM_BIOS(1) ) ROMX_LOAD( "537p3654.u35", 0x1000, 0x0800, CRC(a8a07223) SHA1(e8ae1ebf2d7caf76771205f577b88ae493836ac9), ROM_BIOS(1) ) ROM_REGION( 0x1000, "chargen", 0 ) ROM_LOAD( "x820ii.u57", 0x0000, 0x0800, CRC(1a50f600) SHA1(df4470c80611c14fa7ea8591f741fbbecdfe4fd9) ) ROM_LOAD( "x820ii.u58", 0x0800, 0x0800, CRC(aca4b9b3) SHA1(77f41470b0151945b8d3c3a935fc66409e9157b3) ) ROM_REGION( 0x800, "keyboard", 0 ) ROM_LOAD( "keyboard", 0x0000, 0x0800, NO_DUMP ) ROM_END ROM_START( x168 ) ROM_REGION( 0x1800, Z80_TAG, 0 ) ROM_DEFAULT_BIOS( "v404" ) ROM_SYSTEM_BIOS( 0, "v404", "Balcones Operating System v4.04" ) ROMX_LOAD( "537p3652.u33", 0x0000, 0x0800, CRC(7807cfbb) SHA1(bd3cc5cc5c59c84a50747aae5c17eb4617b0dbc3), ROM_BIOS(1) ) ROMX_LOAD( "537p3653.u34", 0x0800, 0x0800, CRC(a9c6c0c3) SHA1(c2da9d1bf0da96e6b8bfa722783e411d2fe6deb9), ROM_BIOS(1) ) ROMX_LOAD( "537p3654.u35", 0x1000, 0x0800, CRC(a8a07223) SHA1(e8ae1ebf2d7caf76771205f577b88ae493836ac9), ROM_BIOS(1) ) ROM_REGION( 0x1000, I8086_TAG, 0 ) ROM_LOAD( "8086.u33", 0x0000, 0x1000, CRC(ee49e3dc) SHA1(a5f20c74fc53f9d695d8894534ab69a39e2c38d8) ) ROM_REGION( 0x1000, "chargen", 0 ) ROM_LOAD( "x820ii.u57", 0x0000, 0x0800, CRC(1a50f600) SHA1(df4470c80611c14fa7ea8591f741fbbecdfe4fd9) ) ROM_LOAD( "x820ii.u58", 0x0800, 0x0800, CRC(aca4b9b3) SHA1(77f41470b0151945b8d3c3a935fc66409e9157b3) ) ROM_REGION( 0x800, "keyboard", 0 ) ROM_LOAD( "keyboard", 0x0000, 0x0800, NO_DUMP ) ROM_END ROM_START( mk83 ) ROM_REGION( 0x1000, Z80_TAG, 0 ) ROM_LOAD( "2732mk83.bin", 0x0000, 0x1000, CRC(a845c7e1) SHA1(3ccf629c5cd384953794ac4a1d2b45678bd40e92)) ROM_REGION( 0x800, "chargen", 0 ) ROM_LOAD( "2716mk83.bin", 0x0000, 0x0800, CRC(10bf0d81) SHA1(7ec73670a4d9d6421a5d6a4c4edc8b7c87923f6c)) ROM_END /* System Drivers */ /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ COMP( 1980, bigboard, 0, 0, bigboard, xerox820, driver_device, 0, "Digital Research Computers", "Big Board", GAME_IMPERFECT_KEYBOARD ) COMP( 1981, x820, bigboard, 0, xerox820, xerox820, driver_device, 0, "Xerox", "Xerox 820", GAME_IMPERFECT_KEYBOARD | GAME_NO_SOUND_HW ) COMP( 1982, mk82, bigboard, 0, bigboard, xerox820, driver_device, 0, "Scomar", "MK-82", GAME_IMPERFECT_KEYBOARD ) COMP( 1983, x820ii, 0, 0, xerox820ii, xerox820, driver_device, 0, "Xerox", "Xerox 820-II", GAME_NOT_WORKING | GAME_IMPERFECT_KEYBOARD ) COMP( 1983, x168, x820ii, 0, xerox168, xerox820, driver_device, 0, "Xerox", "Xerox 16/8", GAME_NOT_WORKING | GAME_IMPERFECT_KEYBOARD ) COMP( 1983, mk83, x820ii, 0, mk83, xerox820, driver_device, 0, "Scomar", "MK-83", GAME_NOT_WORKING | GAME_IMPERFECT_KEYBOARD | GAME_NO_SOUND_HW )