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Subject:
Re: Com Ports - How many can I have?
From:
David Figueroa <[log in to unmask]>
Reply To:
PCBUILD - PC Hardware discussion List <[log in to unmask]>
Date:
Fri, 27 Feb 1998 07:39:44 -0500
Content-Type:
text/plain
Parts/Attachments:
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At 07:41 PM 2/26/98 -0000, you wrote:
>I thought you could only have/use  2 Com ports at a time? but he insists
>that it should be possible.

COM1 and COM3 share the same interrupt (IRQ4) and cannot be used at the
same time. COM2 and COM4 share an interrupt (IRQ3) and cannot be used at
the same time. To use two COM ports at the same time, one must be an odd
number port and the other an even number port.

David Figueroa
--
Internet Communications of America, Inc.

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