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Article #940

How to detect base address of COMx ports?

#940
From: Binod Taterway
Date: Mon, 17 Aug 1992 18:28
19 lines
1433 bytes
I am writing a software that dials various computers using a comm
package. In order to dial thru a particular, I need to know the base
address of the serial port. For COM1 and COM2, base addresses are set
to 0x3F8 and 0x2F8, respectively. For the rest of the ports, their
addresses are highly dependent on the vendor. So right now, I ask my
users to specify this address and the interrupt level if they are
using ports such as COM3 and COM4. Many of these users are too naive
to understand what these two terms and have hard time looking up the
manual. Is there any way, via some interrupt routine or the like, to
determine how many ports are available and their base addresses and
interrupt levels. Is it stored anywhere on the system?

Thanks in advance for your replies.
--

- Binod Taterway                     
  Sr. User Consultant (LUCC)
  E-mail: bt00@Lehigh.EDU
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From: lubkt@synergy.CC.Lehigh.EDU (Binod Taterway)
Newsgroups: comp.os.msdos.programmer
Subject: How to detect base address of COMx ports?
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Date: 17 Aug 92 18:28:54 GMT
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