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From: bobh@pedsgd.UUCP (Bob Halloran)
Newsgroups: net.micro.atari
Subject: Re: Looking for info on 800XL serial bus
Message-ID: <202@pedsgd.UUCP>
Date: Thu, 18-Jul-85 09:05:30 EDT
Article-I.D.: pedsgd.202
Posted: Thu Jul 18 09:05:30 1985
Date-Received: Sun, 21-Jul-85 01:54:56 EDT
References: <325@dadla.UUCP>
Reply-To: bobh@pedsgd.UUCP (Bob Halloran)
Distribution: net
Organization: Perkin-Elmer, Tinton Falls, NJ
Lines: 38

Organization : Perkin-Elmer DSG, Tinton Falls NJ

In article <325@dadla.UUCP> tektronix!dadla!toc writes:
>-------
>	I would like to write a program under CP/M which watches the
>	Atari serial bus and acts as a file server, storing a virtual
>	Atari disk under CP/M as a 90K file.  A grafix program on the
>	Atari could read commands from a file with a grafix program on
>	my CP/M machine acting as a file.  To do this I need to know
>	much about what the 800XL is saying on it's serial bus.
>
>	Anyone got any suggestions as to where I look?

I'm not sure if they're still in operation, but there was a firm called
USS Enterprises :-) that marketed a package for doing just what you
describe.  The package was called 'The Critical Connection' and required 
you have a serial port on your CP/M box that could manage 19.2Kb.
They included a serial cable with a DB-25 on one end and an Atari
serial bus plug on the other, which would lead me to assume there
is some mapping between RS-232 and Ataribus.  They allowed you to 
simulate an Atari disk volume within CP/M, etc.  Pournelle wrote it 
up in one of his BYTE columns.  Someone on the net have any further 
information on this (continued existance, performance, etc.)?

I also seem to recall some Atari - CP/M program being posted to 
CPMUG or SIG/M.  If you have access to one of their catalogs,
they may also be of help.

Good luck.

						Bob Halloran
						Sr MTS, Perkin-Elmer DSG
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