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- Newsgroups: comp.dcom.modems
- Path: sparky!uunet!walter!qualcom.qualcomm.com!qualcom!rdippold
- From: rdippold@qualcom.qualcomm.com (Ron Dippold)
- Subject: Re: Can you put 2 modems on the same computer?
- Message-ID: <rdippold.720212551@qualcom>
- Sender: news@qualcomm.com
- Nntp-Posting-Host: qualcom.qualcomm.com
- Organization: Qualcomm, Inc., San Diego, CA
- References: <BwqwML.CEx@news.cso.uiuc.edu>
- Date: Tue, 27 Oct 1992 19:02:31 GMT
- Lines: 23
-
- mem28103@uxa.cso.uiuc.edu (Marc E. Munoz-"Ren" ) writes:
- >I was wondering if one could put 2 modems on one computer. Would there be many
- >conflicts among the two in terms of CPU time or interrupts?
-
- No problem. Simply make one of your modems COM3, the other COM4, and
- your original serial card is still COM1 and COM2. If you want to use
- Windows or OS/2 you have to make sure that there aren't any interrupt
- conflicts - COM3 and COM4 are normally at the same interrupts as COM1
- and COM2 respectively, and you'll have to move them to unused
- interrupts. For best performance, make sure the modems (if it's
- internal) or the serial card you're hooking them to (if they're
- external) use a 16550A UART rather than the 16450 or 8250. If your
- serial card is socketed they're easy to replace.
-
- What else... hmmm, without the 16550A don't expect any reasonable
- performance from Windows, and even with it's pretty bad. There are
- replacement communications managers for Windows.
-
- It _can_ be done! I'm running a Dual Standard and ZyXEL att the same
- time off a 386/33 running OS/2 with almost no system performance hit
- at all (using OS/2 software).
- --
- Old MacDonald had an agricultural real estate tax abatement.
-