plipconfig



PLIPCONFIG(8)                                                    PLIPCONFIG(8)




NAME

       plipconfig - fine tune PLIP device parameters


SYNOPSIS

       plipconfig interface
       plipconfig interface [nibble NN] [trigger NN] [unit NN]


DESCRIPTION

       Plipconfig  is used to (hopefully) improve PLIP performance by changing
       the default timing parameters used by the PLIP  protocol.  Results  are
       dependent  on  the  parallel port hardware, cable, and the CPU speed of
       each machine on each end of the PLIP link.

       If the single interface argument is given, plipconfig displays the sta-
       tus  of  the  given  interface only.  Otherwise, it will try to set the
       options.


OPTIONS

       nibble NN
              Sets the nibble wait value in microseconds. Default is 3000.

       trigger NN
              Sets the trigger wait value in microseconds. Default is 500.

       PLIP speed can in some cases be improved by lowering the  default  val-
       ues.  Values which are too low may cause excess use of CPU, poor inter-
       rupt response time resulting in serial ports dropping characters, or in
       dropping  of  PLIP  packets. Changing the plip MTU can also affect PLIP
       speed.


NOTE

       If you get no response it is far more likely the irq is wrong and needs
       setting  with ifconfig. The few cases where the default parameters will
       be too fast are those using very  long  cables.  Something  you  should
       never  do as the parallel port is not specified or designed for driving
       long cable runs.


SEE ALSO

       ifconfig(8)


BUGS

       Non.


AUTHOR

       John        Paul        Morrison,        <jmorriso@bogomips.ee.ubc.ca>,
       <ve7jpm@ve7jpm.ampr.org>




                               17 February 1995                  PLIPCONFIG(8)

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