Article View: comp.os.msdos.programmer
Article #3286Re: Modems and baud rate divisors
From: Eric Hughes
Date: Sat, 01 Dec 1990 23:37
Date: Sat, 01 Dec 1990 23:37
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1146 bytes
In article <2128@mentor.cc.purdue.edu> standish@mentor.cc.purdue.edu (Dreamwalker) writes: >Could someone tell me what the baud rate divisors are for a modem? You are really programming the serial port chip, not the modem. >All I have is that 300 baud is 384, ... A baud rate divisor takes an external clock and divides it down to get lower frequencies. Thus if 300 bps corresponds to 384, then 1200 bps corresponds to 384/4 = 96, 2400 bps --> 48, 9600 bps --> 24, and 115200 bps --> 1. This is where that 115 Kbps figure for fast serial port connections from PC to PC comes from. Eric Hughes hughes@ocf.berkeley.edu
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!munnari.oz.au!uhccux!ames!bionet!agate!agate!hughes From: hughes@locusts.Berkeley.EDU (Eric Hughes) Newsgroups: comp.os.msdos.programmer Subject: Re: Modems and baud rate divisors Message-ID: <HUGHES.90Dec1153716@locusts.Berkeley.EDU> Date: 1 Dec 90 23:37:15 GMT References: <2128@mentor.cc.purdue.edu> Sender: usenet@agate.berkeley.edu (USENET Administrator) Organization: ucb Lines: 19 In-Reply-To: standish@mentor.cc.purdue.edu's message of 1 Dec 90 22:12:33 GMT