Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!usc!chaph.usc.edu!nunki.usc.edu!wilber
From: wilber@nunki.usc.edu (John Wilber)
Newsgroups: comp.sys.ibm.pc.programmer
Subject: Re: How do get COMx to do 19,200 baud
Message-ID: <8422@chaph.usc.edu>
Date: 2 Mar 90 06:38:42 GMT
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I've got a few suggestions.  First, you can get some VERY HIGH baud
rates from a serial port, as high as 100+ kbaud, if memory serves me
correctly.  Programs such as LapLink, and the Norton Commander 3.0 do
this with file transfers between PC's.

My guess is that you can get around any BIOS limitations by writing
directly to the registers on the 8250 controlling the serial port.  The
8250 is called a UART (say YOO-art, stands for Universal Asynchronous
Receiver/Transmitter) and is basically a serial port chip.  Each serial
port has an 8250.  Check some literature from Intel (they make the
chip) for WHAT to write to the registers, and check some PC
documentation for what ports or memory locations to write to so you can
access these registers.

Hope this helped.

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