home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.os.msdos.programmer
- Path: sparky!uunet!cis.ohio-state.edu!magnus.acs.ohio-state.edu!usenet.ins.cwru.edu!news.ysu.edu!do-not-reply-to-path
- From: af458@yfn.ysu.edu (Jon K. Salmon)
- Subject: Re: How to detect base address of COMx ports?
- Message-ID: <1992Aug18.021412.19094@news.ysu.edu>
- Sender: news@news.ysu.edu (Usenet News Admin)
- Nntp-Posting-Host: yfn
- Organization: Youngstown State University/Youngstown Free-Net
- Date: Tue, 18 Aug 1992 02:14:12 GMT
- Lines: 10
-
-
- 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
- --
-