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- Path: sparky!uunet!haven.umd.edu!purdue!mentor.cc.purdue.edu!noose.ecn.purdue.edu!pasture.ecn.purdue.edu!gurganus
- From: gurganus@pasture.ecn.purdue.edu (J Gurganus)
- Newsgroups: comp.os.os2.misc
- Subject: Re: 14.4k modems
- Message-ID: <gurganus.714334762@pasture.ecn.purdue.edu>
- Date: 20 Aug 92 18:19:22 GMT
- References: <Bt8y6w.1o5@acsu.buffalo.edu>
- Sender: news@noose.ecn.purdue.edu (USENET news)
- Organization: Purdue University Engineering Computer Network
- Lines: 46
-
- tjc@acsu.buffalo.edu (Thomas J. Corsalini) writes:
-
-
- > I am going to purchase a new modem and would appreciate feedback on
- >the following points.
- >
- > a) I was going to purchase a v.32 modem but it would appear that the
- > 14.4k models, many with FAX included, are not that much more. I have
- > seen ads that range from $250 - $500+. I don't have an immediate
- > need for a FAX but...why upgrade again soon. Anyone have experience
- > with any of the less expensive brands/models?
-
- I got a Digicom Scout Plus v.32 modem/fax for around $300. Although
- the modem itself works great, don't put the power supply any where
- near vital magnetic/electric equipment. I had the power supply under
- my monitor, and while I was using OS/2, the monitor quit syncing
- suddenly to 800x600 mode. After smelling components fry, I turned off
- the monitor. It looks like that particular refresh frequency for
- 800x600 got toasted, because every mode except the 800x600 I was using
- works okay except now the monitor gets shaky occasionally. I was
- quite appalled since the power supply and modem (and monitor) are all
- FCC B rated. Naturally, Digicom isn't liable for damage caused to
- other equipment by their hardware.
-
- Anybody else had any problems with Digicom hardware?
-
- > b) I do not currently have an I/O card with a 16550 UART. If I am
- > working predominantly working under OS/2 can I safely assume that I
- > do NOT actually need the FIFO buffer of the 16550? Does OS/2
- > suffiently buffer the com port? Would the modem suffer a performance
- > degradation under DOS?
-
- 16550's always do good. I simply replaced by second 16450 with the
- 16550 and now OS/2 and DOS communications scream. I've done 38400 in
- OS/2 2.0 with no problems and no obvious performance hits. I have a
- 486/33 so that helps too. 8)
-
- > c) It seems that only the internal models have a 16550 integrated
- > into their design. Can someone explain the logic of this.
-
- To run at high speed, you've got to have the buffered 16550 uart to
- keep from losing information.
-
- --
- James Gurganus
- (gurganus@ecn.purdue.edu)
-