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From: sshoe@ucunix.san.uc.edu (Steven S. Shoemaker)
Newsgroups: comp.os.os2.misc
Subject: Re: Parallel Port in OS/2 1.2 or 1.3
Message-ID: <1991Mar17.165259.15284@ucunix.san.uc.edu>
Date: 17 Mar 91 16:52:59 GMT
References: <1334@h.cs.wvu.wvnet.edu>
Organization: University of Cincinnati
Lines: 18

In article <1334@h.cs.wvu.wvnet.edu> dbl@h.cs.wvu.wvnet.edu (David Lawson,,2933607,5999662) writes:
>HELP!!!!
>
>My parallel port WILL NOT work under OS/2 (any verison I have tried)
>I installed the correct printer driver and DOS/BIOS like the port fine.
>Also, the port is on one of these all-encompassing-cards, i.e., 
>2 serial, game, clock, and parallel.  The serial ports work fine,
>so does the clock, but not the LPT1:.  I am considering getting a parallel
>port on a card and trying that, any suggestions??? Thanks in advance.
>
>dave Lawson

In OS/2, parallel ports are interrupt driven.  DOS, on the other hand,
polls the port(s).  Therefore, to use parallel ports with OS/2, your
hardware must correctly implement hardware interrupts.  Many clone
parallel port boards do not, since DOS did/does not need interrupts.
Maybe you're lucky, and you just need to add/change a jumper to enable
parallel port interrupts.  Hope this helps.