Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!snorkelwacker.mit.edu!bloom-beacon!eru!hagbard!sunic!mcsun!hp4nl!dri500!slootman
From: slootman@dri.nl (Paul Slootman)
Newsgroups: comp.lang.c
Subject: Re: reading from a parallel port
Message-ID: <986@dri500.dri.nl>
Date: 9 Apr 91 09:15:21 GMT
References: <1991Apr8.182526.17852@ux1.cso.uiuc.edu>
Followup-To: comp.os.msdos.programmer
Organization: DataCount Register Informatici, Wierden, The Netherlands
Lines: 22

djk@ux1.cso.uiuc.edu (Doug Kelly) writes:
>Hello, Im trying to write a program to interface to my Epson ES-300C color
>scanner.  It uses a bi-directional parallel interface, and i cant figure out
>how to 'read' from a parallel port.  Im using borland turbo c, any help would
>be appreciated.  Thanks

Assuming you're on some IBM PC-compatible,
simply do a inportb() (reads a byte from hardware port) from the data latch
corresponding to the parallel interface. For example, to get the byte on a
printer port at 0x378, do

	x=inb(0x378);

This is not, in fact, a C question; I've redirected followups to
comp.os.msdos.programmer.

Paul.
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