Amplifier fault w/steppers..?????

["P.K. Ferrick" <ferrick-at-telenet.net>]

Hello all,

I've been having a problem running EMC lately that I can't seem to
crack, and I'm hoping that some kind soul on the list can help me out.
First of all, I'm running BDI 2.10 on a 333 MHz machine with 128 Mb of
RAM.

EMC always starts up fine, but _sometimes_ when I click on "Machine On"
(after pressing F1 to toggle off estop) I get the following error
message:

    Amplifier fault on axis 1

This doesn't happen every time, but after it does the only thing that
will make it stop is a full power-off reboot....not something you have
to sit through too many times before you get tired of it!!!

Examining the messages in the console window (from which I start emc
using emc.run) I find the following:

    minimilltaskintf.cc 962: Error on axis 0.
    minimilltaskintf.cc 962: Error on axis 1.
    minimilltaskintf.cc 962: Error on axis 2.

The weird thing is that I'm using steppers and therefore steppermod.o
and not the servo driver at all.  So where does an amplifier come in???
It seems as though the state of the parallel port is related to this
problem.

Any help would be much appreciated.

Thanks,
Pat Ferrick