Parallel Port on XP

  • Thread starter Thread starter Homer
  • Start date Start date
H

Homer

Hi All,

I have a simple Stepper Motor Controler that uses Parallel port for
connection. I had no problem using it with Win98 but now with WinXP
story is different.

The problem I have is not protection issue in NT/XP OSes. The problem
is as soon as I connect my cable to parallel port, my steppers motors
lock down. It seem parallel port is sending some signal regardless of
having any program running or not.
If I boot from Win98, everything is good.

Something is setting my parrallel pins to Hi and Low without having any
program running (and no prointer is defined). Any idea?

P.S. I have already ran UserPort.exe hack to release the protection.
 
Most parallel ports have options like ECP, Enhanced and interrupt options.
Use Device manager to check this.

JS
 
And what does this means. Should I disable ECP? Should I change
something in Device Manager? Properties?
 
I would try to disable ECP (bi-directional communications) especially IF the
Stepper Motor Controller does not communicate back to the PC. If that
doesn't work experiment with the port settings.

JS
 
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