There's a pinout of the parallel port here:
http://www.beyondlogic.org/spp/parallel.htm
An oscilloscope (or even just a voltmeter) is always a helpful tool to have.
There's a pinout of the parallel port here:
http://www.beyondlogic.org/spp/parallel.htm
An oscilloscope (or even just a voltmeter) is always a helpful tool to have.