COM3 and up interrupt handling

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#3738

From: W. Gregg Stefancik
Date: Mon, 12 Oct 1992 12:23

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Since COM ports 3 and up share the same interrupts as COM1 and COM2 what
is the proper way to write an interrupt handler which is aware of this
interrupt sharing?  Should the well behaved handler chain the COM
interrupts?  I currently have a driver for a TSR which handles COM1 and
COM2, but want to make sure that it doesn't screw up anything trying to
use COM3 or higher.

Please respond via e-mail.

-- 
W. Gregg Stefancik
wstef@hubcap.clemson.edu

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Message-ID: <1992Oct12.122325.19296@hubcap.clemson.edu>

Path: arc1-ca.pugleaf.net!sparky!uunet!gatech!hubcap!wstef

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Newsgroups: comp.os.msdos.programmer
Path: arc1-ca.pugleaf.net!sparky!uunet!gatech!hubcap!wstef
From: wstef@hubcap.clemson.edu (W. Gregg Stefancik)
Subject: COM3 and up interrupt handling
Message-ID: <1992Oct12.122325.19296@hubcap.clemson.edu>
Organization: Clemson University
Date: Mon, 12 Oct 1992 12:23:25 GMT
Lines: 12