Capturing Parallel Port Data

soralx at soralx at
Thu Dec 14 11:49:31 PST 2006

> Now, my real question is:  how do I read data from the parallel port
> on the FreeBSD computer that is coming from the tester which is
> trying to 'print' to the FBSD computer's parallel port?  Is there a

did you try to set LPT0 mode to bi-directional in the BIOS, and then
`cat /dev/lpt0`?

> suggested pinout for a parallel crossover calbe to accomplish this
> task with ppi?  Is the crossover cable even required?

as I understand it, either the 8 parallel lines can be driven on both
sides to send data both ways, or the 5 control inputs (paper out, ACK,
busy, etc) are used to receive data, or both.

> -J. Hunt

[SorAlx]  ridin' VN1500-B2

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