Re: How to detect base address of COMx ports?

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#947

From: Jon K. Salmon
Date: Tue, 18 Aug 1992 02:14

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Well, in theory you can look at the 4 WORD values at 40h:00h, which
SHOULD be the port addrs for COM1-COM4.  How safe/reliable this
technique is, I do not know.  There is a similar table of LPT port
addrs (next 4 WORDs?  I don't recall), but I KNOW that is unreliable.

For what it's worth...

-- Jon
--

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From: af458@yfn.ysu.edu (Jon K. Salmon)
Subject: Re: How to detect base address of COMx ports?
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