Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!cs.utexas.edu!sm.unisys.com!psivax!torkil
From: torkil@psivax.UUCP (Torkil Hammer)
Newsgroups: sci.electronics
Subject: Re: Question: 10,000 bit wide UART
Message-ID: <2430@psivax.UUCP>
Date: 20 Feb 89 22:36:56 GMT
References: <10108@pasteur.Berkeley.EDU>
Reply-To: torkil@psivax.UUCP (Torkil Hammer)
Distribution: usa
Organization: Pacesetter Systems Inc., Sylmar, CA
Lines: 18

In article <10108@pasteur.Berkeley.EDU> atn@cory.Berkeley.EDU (Alan Nishioka) writes:
#
#    I am trying to build a digital data link, as an experiment, which uses
#variable length packets (from 1 to about 10,000 bits in length).
#
#    All of the UART's that I could find only work with up to 9 bit characters.
#
Since this is an experimental project, you can put an embedded controller
to work.  My choice is Intel 8751.  It has a conventional 8/9 bit UART
which you can use for communication with the main CPU, and 4 kbytes of
eprom which you use for the external uart control.  In other words,
program your own uart in software and use an 8751 i/o port for
the hardware link, and use the built-in uart to shuffle data to your IBM
PC or whatever, using its RS232 port.

It is doable, and not that hard.  Good luck.

torkil