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From: gah@hood.hood.caltech.edu (Glen Herrmannsfeldt)
Newsgroups: comp.os.os2.programmer
Subject: Re: COM3, COM4 support
Keywords: COM3
Message-ID: <gah.669016481@hood>
Date: 15 Mar 91 05:54:41 GMT
References: <gah.668509309@valine>
Sender: news@nntp-server.caltech.edu
Organization: California Institute of Technology, Pasadena
Lines: 6

Apparently the reason my COM4 didn't work is that it has
an 8250 and not a 16450.  I put COM3 on IRQ2 --> vector 9,
and it works.  Now I will have to find a 16450.

Someday I should figure out how to support a second disk controller.
It should be about as hard.