PLIPCONFIG(8) Linux System Administrator's Manual PLIPCONFIG(8)
NAME
plipconfig - fine tune PLIP device parameters
SYNOPSIS
plipconfig interface [nibble NN] [trigger NN]
plipconfig [-V] [--version] [-h] [--help]
DESCRIPTION
Plipconfig is used to (hopefully) improve PLIP performance by changing
the default timing parameters used by the PLIP protocol. Results are de-
pendent 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 op-
tions.
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 values.
Values which are too low may cause excess use of CPU, poor interrupt re-
sponse time resulting in serial ports dropping characters, or in drop-
ping 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>
net-tools 2008-10-03 PLIPCONFIG(8)
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