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- Newsgroups: comp.os.os2.misc
- Path: sparky!uunet!gatech!emory!wupost!usc!cs.utexas.edu!torn!news.ccs.queensu.ca!qucis.queensu.ca!jardined
- From: jardined@qucis.queensu.ca (Donald Jardine)
- Subject: Re: Serial I/O cards?
- Message-ID: <1992Dec27.205914.19315@qucis.queensu.ca>
- Keywords: serial uart
- Organization: Computing & Information Science, Queen's University at Kingston
- References: <1992Dec26.175221.5170@qucis.queensu.ca> <8217@lib.tmc.edu>
- Date: Sun, 27 Dec 1992 20:59:14 GMT
- Lines: 22
-
- >
- >Any serial card that you can physically plug the chips into will do just fine.
- >There are folks out there who claim that the card must be specifically
- >designed for the 16550; this is bunk.
- >--
- >Jay Maynard, EMT-P, K5ZC, PP-ASEL | Never ascribe to malice that which can
- >jmaynard@oac.hsc.uth.tmc.edu | adequately be explained by stupidity.
-
- Not quite true. I recently bought an IO card with a 16450 on it as COM2, had
- our electronics technician unsolder it, install a socket, and install
- a real NS16550AFN. OS2 now refuses to even recognize that COM2 is present,
- let alone use the uart.
-
- No, I have not tried the obvious test of putting a 16450 in the socket, but
- I had a similar experience with an Everex board that was supplied with
- a socketed 16550. OS2 wouldn't recognize the COM port on that board either,
- lthough ordinary DOS would do so. Peculiarly enough, the Everex DOS
- diagnostics wouldn't run on their 16550AFN uart port either, even under
- MS DOS!
-
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