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PLIPCONFIG !!!PLIPCONFIG NAME SYNOPSIS DESCRIPTION OPTIONS NOTE SEE ALSO BUGS AUTHOR ---- !!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 status 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 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 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, ----
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