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- Newsgroups: comp.dcom.modems
- Path: istar.net!infoshare!whome!gts!bokonon!stephen
- From: stephen@bokonon.ussinc.com (Stephen M. Dunn)
- Subject: Re: What does UART stand for?
- Organization: United System Solutions Inc.
- Date: Sat, 10 Feb 1996 21:24:35 GMT
- Message-ID: <DMKwsz.3to@bokonon.ussinc.com>
- References: <4f3sfj$ciu@news-f.iadfw.net>
-
- In article <4f3sfj$ciu@news-f.iadfw.net> chadwick@airmail.net (Caius) writes:
- $What does UART stand for and what do UART chips do exactly? I know
- $that without them, you can't play many modem games. Why?
-
- Universal Asynchronous Receiver/Transmitter. It's responsible
- for converting a stream of data between a parallel byte stream
- and a serial bit stream. It's the interface between the computer's
- innards, which run in parallel, and serial devices.
-
- Without a UART, or something else which does the same task,
- you can't do _anything_ with serial communications, whether that's
- with a modem or not, and whether it's a game or not. Since IBM
- decided to use an 8250 UART when they came up with the IBM PC,
- the use of an 8250 or compatible is the standard, so while it's
- entirely possible to do serial communications without one if
- you really want to, you wouldn't be compatible with the PC standard.
- So basically, you need a UART.
- --
- stephen@bokonon.ussinc.com ...!{xrtll,gts.org}!bokonon!stephen
- ----------------------------------------------------------------------------
- Stephen M. Dunn, CNE, ACE, Sr. Systems Analyst, United System Solutions Inc.
- 104 Carnforth Road, Toronto, ON, Canada M4A 2K7 (416) 750-7946 x251
-