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NAME    [Toc]    [Back]

       plipconfig - fine tune PLIP device parameters

SYNOPSIS    [Toc]    [Back]

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

DESCRIPTION    [Toc]    [Back]

       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 status
  of	the  given  interface only.  Otherwise, it will try to set the

OPTIONS    [Toc]    [Back]

       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
 response time resulting in serial ports dropping characters, or in
       dropping  of  PLIP  packets. Changing the plip MTU can also affect PLIP

NOTE    [Toc]    [Back]

       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    [Toc]    [Back]


BUGS    [Toc]    [Back]


AUTHOR    [Toc]    [Back]

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

			       17 February 1995 		 PLIPCONFIG(8)
[ Back ]
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