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From: jfarley@pollux.svale.hp.com (Jens Farley)
Newsgroups: comp.os.os2.misc
Subject: Re: Parallel Ports and OS/2
Message-ID: <7110004@pollux.svale.hp.com>
Date: 19 Mar 91 20:01:58 GMT
Organization: Hewlett Packard CPCD, Sunnyvale CA
Lines: 25

dbl@h.cs.wvu.wvnet.edu (David Lawson,,2933607,5999662) writes:

> My parallel port WILL NOT work under OS/2 (any verison I have tried)

Here's how OS/2 expects a parallel port to be configured:

                        Starting
      Port Name        I/O address       Interrupt
      ---------        -----------       ---------
        LPT1              378h             IRQ 7
        LPT2              278h             IRQ 5

As long as you can configure your card as above, and it doesn't
have any hardware design flaws, it should work.

I don't know why, but some card manufactures have opted to scramble
these characteristics -- for example, the Everex Magic I/O card
looks like:

       Everex         OS/2
      Port Name     Port Name     I/O address     Interrupt
      ---------     ---------     -----------     ---------
        LPT1          None           3BCh           IRQ 7
        LPT2          LPT1           378h           IRQ 7
        LPT3          LPT2           278h           IRQ 5