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[WriteLog] Com Ports

To: <writelog@contesting.com>
Subject: [WriteLog] Com Ports
From: hamcat@directvinternet.com (K4SB)
Date: Wed, 18 Dec 2002 03:44:36 +0000
In a previous post, someone mentioned he couldn't remember the various
comm port
addresses and IRQs. So, without further fanfare,

Comm1=03F8H
Comm2=02F8H
Comm3=03E8H
Comm4=02E8H

Common IRQ assignments are IRQ3 for 2 and 4, and IRQ4 for 1 and 3. And
obviously, you can't have 4 comm ports and only 2 IRQs.

The way I remember the IRQs is that for even comm ports, the IRQ is
odd, and vice
versa.

73
Ed


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