Re: Reading PRN:-port

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#4240

From: Jeffrey A. Shorey
Date: Thu, 01 Nov 1990 13:39

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From article <1393@tnosoes.izf.tno.nl>, by joep@tnosoes.izf.tno.nl (Joep Mathijssen):
> Looking for a program that lets me READ the parallel-port (PRN:) on a
                                     ^^^^
If you look in the schematics for any parallel you will find it is a one way
set of registers.  the only line that comes in is some sort of acknowledge
line.
   Therefore you have two choices: make you own bidirectional parallel port
(5 or 6 chips, with buffers and 8-bit gates) or use the serial port.  If you
really want to build one, I've done it and have the schematics running around
someplace...

- Jeff Shorey

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From: js@dukee.egr.duke.edu (Jeffrey A. Shorey)
Newsgroups: comp.sys.ibm.pc.misc,comp.sources.wanted
Subject: Re: Reading PRN:-port
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Date: 1 Nov 90 13:39:14 GMT
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