plipconfig - fine tune PLIP device parameters
] [trigger NN
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
status of the given interface only. Otherwise, it will try to set the options.
- nibble NN
- Sets the nibble wait value in microseconds. Default is
- trigger NN
- Sets the trigger wait value in microseconds. Default is
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.
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.
John Paul Morrison, <email@example.com>,