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- Path: sparky!uunet!uunet.ca!xenitec!zswamp!geoff
- From: geoff@zswamp.UUCP (Geoffrey Welsh)
- Newsgroups: comp.dcom.modems
- Subject: Re: UART
- Message-ID: <cHk5wB4w165w@zswamp.UUCP>
- Date: Sat, 09 Jan 93 14:39:59 EST
- References: <sg8swB3w165w@willard.UUCP>
- Organization: Izot's Swamp
- Lines: 28
-
- matttrem@willard.UUCP (Matthew Trembley) writes:
-
- > I've heard that you only need the UART when the modem is external unless
- > you don't have it in the port you put it in.
-
- That might make sense, but I can't make sense of it on a weekend.
-
- Internal modems carry their own serial ports with them; upgrading the chip
- on your serial card has no effect for what should be obvious reasons. Some
- internal modems come with 16550s; others (including, shamefully, Hayes) have
- normal UARTs and you'd have to unsolder them from the modem before replacing
- them.
-
- > How does one know what kind and if that UART is IN the actual port?
-
- There are several diagnostic programs, including "MSD" (which is
- undocumented but shipped with MS Windows 3.1). Run one after a vanilla boot
- (i.e., no DesqView, Windows, etc.) and see what it says about your serial
- port.
-
- Note that a high speed modem does not always require a 16550.
-
- Geoffrey Welsh, 7 Strath Humber Court, Islington, Ontario, M9A 4C8 Canada
- geoff@zswamp.uucp, [xenitec.on.ca|m2xenix.psg.com]!zswamp!geoff (416)258-8467
- Now I've lost everything, I give to you my soul
- And the meaning of all that I believed before escapes me
- In this world of none, no thing, and no one
- - Genesis, _Afterglow_
-