<machine name="bigboard5" sourcefile="xerox/xerox820.cpp" cloneof="bigboard" romof="bigboard" isbios="no" isdevice="no" ismechanical="no" runnable="yes">
  <description>Big Board (5.25" drives)</description>
  <year>1980</year>
  <manufacturer>Digital Research Computers</manufacturer>
  <rom name="bigboard.u67" merge="bigboard.u67" size="2048" crc="5a85a228" sha1="d51a2cbd0aae80315bda9530275aabfe8305364e" region="u46" offset="0" status="good" optional="no" />
  <rom name="bigboard.u73" merge="bigboard.u73" size="2048" crc="10bf0d81" sha1="7ec73670a4d9d6421a5d6a4c4edc8b7c87923f6c" region="chargen" offset="0" status="good" optional="no" />
  <device_ref tag=":u46" name="z80" />
  <device_ref tag=":screen" name="screen" />
  <device_ref tag=":gfxdecode" name="gfxdecode" />
  <device_ref tag=":palette" name="palette" />
  <device_ref tag=":u105" name="z80pio" />
  <device_ref tag=":u101" name="z80pio" />
  <device_ref tag=":u99" name="z80ctc" />
  <device_ref tag=":u99:ch0" name="z80ctc_channel" />
  <device_ref tag=":u99:ch1" name="z80ctc_channel" />
  <device_ref tag=":u99:ch2" name="z80ctc_channel" />
  <device_ref tag=":u99:ch3" name="z80ctc_channel" />
  <device_ref tag=":u109" name="fd1771" />
  <device_ref tag=":u109:0" name="floppy_connector" />
  <device_ref tag=":u109:0:sa400l" name="floppy_525_sssd" />
  <device_ref tag=":u109:0:sa400l:flopsndout" name="speaker" />
  <device_ref tag=":u109:0:sa400l:flopsnd" name="flopsnd" />
  <device_ref tag=":u109:1" name="floppy_connector" />
  <device_ref tag=":u109:1:sa400l" name="floppy_525_sssd" />
  <device_ref tag=":u109:1:sa400l:flopsndout" name="speaker" />
  <device_ref tag=":u109:1:sa400l:flopsnd" name="flopsnd" />
  <device_ref tag=":u96" name="z80sio" />
  <device_ref tag=":u96:cha" name="z80sio_channel" />
  <device_ref tag=":u96:chb" name="z80sio_channel" />
  <device_ref tag=":rs232a" name="rs232" />
  <device_ref tag=":rs232b" name="rs232" />
  <device_ref tag=":u76" name="com8116" />
  <device_ref tag=":kb" name="x820kb" />
  <device_ref tag=":kb:i8748" name="i8048" />
  <device_ref tag=":flop_list" name="software_list" />
  <device_ref tag=":quickload" name="quickload" />
  <device_ref tag=":mono" name="speaker" />
  <device_ref tag=":beeper" name="beep" />
  <device_ref tag=":beep_timer" name="timer" />
  <chip type="cpu" tag="u46" name="Zilog Z80" clock="2500000" />
  <chip type="cpu" tag="kb:i8748" name="Intel 8048" clock="6000000" />
  <chip type="audio" tag="u109:0:sa400l:flopsndout" name="Speaker" />
  <chip type="audio" tag="u109:0:sa400l:flopsnd" name="Floppy sound" clock="44100" />
  <chip type="audio" tag="u109:1:sa400l:flopsndout" name="Speaker" />
  <chip type="audio" tag="u109:1:sa400l:flopsnd" name="Floppy sound" clock="44100" />
  <chip type="audio" tag="mono" name="Speaker" />
  <chip type="audio" tag="beeper" name="Beep" clock="950" />
  <display tag="screen" type="raster" rotate="0" width="560" height="240" refresh="58.759615" pixclock="10694250" htotal="700" hbend="0" hbstart="560" vtotal="260" vbend="0" vbstart="240" flipx="no" />
  <sound channels="3" />
  <input players="1" service="no" tilt="no">
    <control type="keyboard" buttons="74" reverse="no" />
  </input>
  <port tag=":kb:Y0"></port>
  <port tag=":kb:Y1"></port>
  <port tag=":kb:Y10"></port>
  <port tag=":kb:Y11"></port>
  <port tag=":kb:Y12"></port>
  <port tag=":kb:Y13"></port>
  <port tag=":kb:Y14"></port>
  <port tag=":kb:Y15"></port>
  <port tag=":kb:Y2"></port>
  <port tag=":kb:Y3"></port>
  <port tag=":kb:Y4"></port>
  <port tag=":kb:Y5"></port>
  <port tag=":kb:Y6"></port>
  <port tag=":kb:Y7"></port>
  <port tag=":kb:Y8"></port>
  <port tag=":kb:Y9"></port>
  <driver status="good" emulation="good" savestate="unsupported" requiresartwork="no" unofficial="no" nosoundhardware="no" incomplete="no" />
  <device type="floppydisk" tag="u109:0:sa400l" interface="floppy_5_25">
    <instance name="floppydisk1" briefname="flop1" />
    <extension name="mfi" />
    <extension name="dfi" />
    <extension name="imd" />
  </device>
  <device type="floppydisk" tag="u109:1:sa400l" interface="floppy_5_25">
    <instance name="floppydisk2" briefname="flop2" />
    <extension name="mfi" />
    <extension name="dfi" />
    <extension name="imd" />
  </device>
  <device type="quickload" tag="quickload">
    <instance name="quickload" briefname="quik" />
    <extension name="com" />
    <extension name="cpm" />
  </device>
  <slot name="u109:0">
    <slotoption name="sa850" devname="floppy_8_dsdd" default="no" />
    <slotoption name="sa800" devname="floppy_8_ssdd" default="no" />
    <slotoption name="sa450" devname="floppy_525_dd" default="no" />
    <slotoption name="sa400l" devname="floppy_525_sssd" default="yes" />
    <slotoption name="sa400" devname="floppy_525_sssd_35t" default="no" />
  </slot>
  <slot name="u109:1">
    <slotoption name="sa850" devname="floppy_8_dsdd" default="no" />
    <slotoption name="sa800" devname="floppy_8_ssdd" default="no" />
    <slotoption name="sa450" devname="floppy_525_dd" default="no" />
    <slotoption name="sa400l" devname="floppy_525_sssd" default="yes" />
    <slotoption name="sa400" devname="floppy_525_sssd_35t" default="no" />
  </slot>
  <slot name="rs232a">
    <slotoption name="terminal" devname="serial_terminal" default="no" />
    <slotoption name="swtpc8212" devname="swtpc8212_terminal" default="no" />
    <slotoption name="sunkbd" devname="sunkbd_adaptor" default="no" />
    <slotoption name="rs_printer" devname="rs_serial_printer" default="no" />
    <slotoption name="rs232_sync_io" devname="rs232_sync_io" default="no" />
    <slotoption name="printer" devname="serial_printer" default="no" />
    <slotoption name="patch" devname="rs232_patch_box" default="no" />
    <slotoption name="s97801" devname="s97801_terminal" default="no" />
    <slotoption name="msystems_mouse" devname="rs232_mouse_hle_msystems" default="no" />
    <slotoption name="scorpion" devname="scorpion_ic" default="no" />
    <slotoption name="nss_tvi" devname="nss_tvinterface" default="no" />
    <slotoption name="mockingboard" devname="mockingboardd" default="no" />
    <slotoption name="loopback" devname="rs232_loopback" default="no" />
    <slotoption name="keyboard" devname="serial_keyboard" default="no" />
    <slotoption name="ie15" devname="ie15_terminal" default="no" />
    <slotoption name="null_modem" devname="null_modem" default="no" />
    <slotoption name="votraxtnt" devname="serial_votraxtnt" default="no" />
    <slotoption name="h19" devname="serial_heath_h19" default="no" />
    <slotoption name="dec_loopback" devname="dec_rs232_loopback" default="no" />
    <slotoption name="pty" devname="pseudo_terminal" default="no" />
    <slotoption name="auto3a" devname="auto3a_terminal" default="no" />
  </slot>
  <slot name="rs232b">
    <slotoption name="terminal" devname="serial_terminal" default="no" />
    <slotoption name="swtpc8212" devname="swtpc8212_terminal" default="no" />
    <slotoption name="sunkbd" devname="sunkbd_adaptor" default="no" />
    <slotoption name="rs_printer" devname="rs_serial_printer" default="no" />
    <slotoption name="rs232_sync_io" devname="rs232_sync_io" default="no" />
    <slotoption name="printer" devname="serial_printer" default="no" />
    <slotoption name="patch" devname="rs232_patch_box" default="no" />
    <slotoption name="s97801" devname="s97801_terminal" default="no" />
    <slotoption name="msystems_mouse" devname="rs232_mouse_hle_msystems" default="no" />
    <slotoption name="scorpion" devname="scorpion_ic" default="no" />
    <slotoption name="nss_tvi" devname="nss_tvinterface" default="no" />
    <slotoption name="mockingboard" devname="mockingboardd" default="no" />
    <slotoption name="loopback" devname="rs232_loopback" default="no" />
    <slotoption name="keyboard" devname="serial_keyboard" default="no" />
    <slotoption name="ie15" devname="ie15_terminal" default="no" />
    <slotoption name="null_modem" devname="null_modem" default="no" />
    <slotoption name="votraxtnt" devname="serial_votraxtnt" default="no" />
    <slotoption name="h19" devname="serial_heath_h19" default="no" />
    <slotoption name="dec_loopback" devname="dec_rs232_loopback" default="no" />
    <slotoption name="pty" devname="pseudo_terminal" default="no" />
    <slotoption name="auto3a" devname="auto3a_terminal" default="no" />
  </slot>
  <softwarelist tag="flop_list" name="xerox820" status="original" />
</machine>