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       pnpdump [ --help ] [ --config ] [ --script[=outputfile]  ]
       [  --reset ] [ --ignorecsum ] [ --masks ] [ --dumpregs ] [
       --max-realtime=t ] [ --version ]  [  --debug-isolate  ]  [
       --outputfile=outputfile] [ [ devs ] readport ]


       pnpdump  will  scan  all  the ISA PnP cards, dumping their
       resource data to stdout. The resource data is supposed  to
       be  a  description of the resources (IO ports, interrupts,
       DMA channels) that the card would like, or needs,  to  use
       to  work.  It  is stored in a small ROM on the card, which
       can be read as part of the  Plug  and  Play  configuration

       Note that some manufacturers are rather lax about the con­
       tents of  this  ROM,  particularly  if  the  card  is  not
       required  for  booting,  so  the  resource data may not be
       accurate. As they also  typically  provide  a  DOS/Windows
       driver  for  the card, they really only need to be able to
       recognise it, as the driver can then complete the configu­

       The  output  of  pnpdump  is in a form that can be used by
       isapnp, except that the  actual  configuration  statements
       are  commented  out. See isapnp.conf(5) for details of the

       By default, pnpdump will reset all the  Card  Serial  Num­
       bers, then ISOLATE each one and allocate it a handle (Card
       Select Number). This process will include trying different
       readport  addresses until a suitable one is found avoiding
       conflicts with other hardware.  For a description of  what
       the readport is, see the relevant entry in isapnp.conf(5).
       As of the isapnptools 1.12 release, any existing  configu­
       ration settings will be unaffected.

       If  a  single  parameter is provided, this will be used as
       the minimum readport address to start scanning.  This  may
       be chosen to avoid an unfortunate conflict.

       To  skip the Isolation process, both additional parameters
       may be supplied:

       devs is the number of PnP cards that the BIOS has found,
              ISOLATEd and allocated CSNs to in the system.  Note
              that  if  this is greater than the actual number of
              cards in the system,  pnpdump  will  stop  scanning
              when  it receives a first serial identifier byte of
              0xff (this is what happens when there isn't a  card
              any conflicts with existing  (non  Plug  and  Play)
              hardware, and must be in the range 0x203..0x3ff.

              If  the  readport  is  specified without devs, then
              this is the minimum readport to use  when  scanning
              for a suitable one.

       Note  that  for the two parameter option to work, you must
       have a PnP BIOS which has already carried out  the  ISOLA­
       TION  process  correctly,  and you must know what readport
       address the BIOS used.

       pnpdump will run with real-time scheduling if possible  to
       achieve  the  required  IO timings. This will lock out all
       normal programs while it executes.  In  version  1.19  and
       later  of  isapnptools, pnpdump will only run in this mode
       for 5 seconds (or as set on the  command  line),  it  then
       reverts  to  standard  scheduling  like any other program.
       Previous versions should only be run from a standard  con­
       sole as ^C will kill it from there. If you run the command
       remotely (and X counts as remote), you will not be able to
       kill it as no other programs can run.

       -h, --help
              Show a help summary.

       -c, --config
              attempt  to  determine  safe  settings to which the
              devices can be set, and uncomment those settings in
              the  output.   pnpdump  will use information in the
              /proc  filesystem   and   the   contents   of   the
              /etc/isapnp.gone  file to discover system resources
              that have already been allocated, if these  facili­
              ties are available on the system.

              Note that if the resource allocation is impossible,
              pnpdump is not intelligent enough to  realise  this
              and may hang trying to find a solution.

       -d, --dumpregs
              this  will cause pnpdump will dump all the standard
              configuration registers for each board.

              Note that this dump is dumping the physical  regis­
              ters,  and  will  thus  show the settings that have
              been put in there by the BIOS, or some  cards  will
              put  a  default  setting  in. Unused registers read
              back as 0.

       -D, --debug-isolate

              Using this flag  allows  the  boards  to  still  be
              found.  Boards  with a bad identifier checksum will
              have the identifier corrected by the resource  data
              if  the  resource data identifier has a good check­

       -r, --reset
              Carry out a full configuration reset,  rather  than
              just  resetting  the  CSNs. DANGEROUS as this could
              reset PnP boards  in  active  use  by  the  kernel,
              resulting in a lockup or worse.

       -m, --masks
              Print the lists of acceptable interrupts and direct
              memory access (DMA) channels  as  binary  bitmasks.
              For  example, print "IRQ mask 0x03" instead of "IRQ
              1, 2, or 3".

       -o, --outputfile=filename
              write all output to the file specified, rather than
              stdout.  This  option  is  not available in the DOS

       -t t, --max-realtime=t
              Set the maximum time the process can run  at  real-
              time  priority  to t seconds. If t is set to 0, the
              timeout is disabled; in this case you must run  the
              program  from  a normal text console to allow it to
              be aborted via control-C if it hangs.  The  default
              timeout   is  5  seconds.  After  the  timeout  has
              expired, the process runs with  normal  scheduling,
              which  means  it may go a lot slower, but will pre­
              vent locking up the comupter  (if  it  hangs  while
              running  under  X windows for example). This option
              is only available  when  compiled  with  real  time
              scheduling support.

       -s, --script[=outputscript]
              write a shell script to the specified file that can
              be used to configure the system based on  what  ISA
              PnP boards were found and how they were configured.
              Note that the script  generated  uses  array  vari­
              ables,  so you need bash version 2 and later to run
              them. This option is not available in the DOS  ver­

              If  --script is specified without an argument, then
              the script is piped (using popen) directly  into  a
              shell  (sh)  process.   This  is really useful only
              with --config.

              ules.isapnp /etc/conf.modules.base > /etc/conf.mod­
              ules",  so that you can automatically configure the
              modules for the devices that you have.

       -v, --version
              Print the isapnptools version number on stderr.


              The executable.

              The  resting   place   of   the   editted   output.
              /etc/isapnp.gone  The standard place for describing
              resources that are unavailable, but not flagged  as
              such  in  /proc/*  etc.  The format of this file is
              explained in the example provided with isapnptools.


       If  the  resource  allocation is impossible, pnpdump -c is
       not intelligent enough to realise this and may hang trying
       to find a solution.

       Check   http://www.roestock.demon.co.uk/isapnptools/   for
       latest information and FAQ.

       If you think you have found one not mentioned in the  lat­
       est   version,   please   send  a  report  to  isapnp@roe­


       This program can reset all your Plug-and-Play devices.  It
       can also lock up your machine.  Use at your own risk.


       pnpdump   has   been   written   by  Peter  Fox  <fox@roe­
       stock.demon.co.uk>, the creator and  maintainer  of  isap­


       The  latest  version of the sources may be obtained by ftp
       from ftp://ftp.demon.co.uk/pub/unix/linux/utils
       Or follow the pointer from my web page at  http://www.roe­


       Plug  and  Play  ISA  Specification,  Version 1.0a, May 5,
       1994.    Available   from   ftp://ftp.microsoft.com/devel­


       isapnp(8), isapnp.conf(5)

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