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From: Terry Lambert <terry@lambert.org>
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Modem at COM3: can't find it!
Date: Sun, 23 Jun 1996 23:43:37 -0700
Organization: Me
Lines: 21
Message-ID: <31CE3919.4A982BB@lambert.org>
References: <4q4bho$7ht@netnews.upenn.edu> <4q6227$qc0@panix.com>
<31C6C2FF.26FB@www.play-hookey.com> <4qjhhe$4ds@uriah.heep.sax.de>
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J Wunsch wrote:
] Not that i really like to defend M$, but that's rather the fault of
] Little Blue's geniusses of engineers. They've been to stingy to use a
] tri-state gate for driving the IRQ line, which would have allowed for
] shared interrupts, but yet assigned the default IRQs for com1/com3 and
] com2/com4 twice.
Actually, there is no IBM standard for com3/com4. This was done
by a modem manufacturer who needed to plug his internal modems
into a machine with two onboard serial ports with no way to
disable the ports in hardware.
I even know which one. Thankfully, the manufacturer is dead,
and will remain blameless (and me lawsuitless).
Terry Lambert
terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.