Date   : Wed, 13 May 1992 23:34:46 GMT
From   : elroy.jpl.nasa.gov!usc!cs.utexas.edu!news-is-not-mail@ames.arc.nasa.gov (Christopher G. Petrilli)
Subject: Exxon Series 500

I just got a machine called an Exxon Series 500 Information Processor.
I suppose, strictly speaking, it is not a CP/M machine, although it does
use a Z-80 and lots of other Zilog parts, so I'm posting this here.

The machine tries to run, but instead of starting up the word processing
software it seems to be dumping me out into some kind of diagnostic
monitor.  Here is what comes up on the screen:

ESOC SERIES 500 OPERATING SYSTEM   ID: AK0006.1H

RESET
 EXOS V BV0h

>

If I type a D at the prompt I get:

0D85 0BD5 C3FB 0B80 6008 0584 8181 2684

I can also type  G xxxx where xxxx is a hex number and it apparently tries
to execute whatever it finds at that address.  I can get it to reboot by
entering  G 0.  Entering  G 0584 (yes, I tried all the "addresses" I got
from D) seems to put it into some kind of memory inspection/modification
mode, something like DDT.

So, can anyone tell me about this machine?  Anyone have any technical specs?
Or (here's hoping) anyone have a CP/M boot disk for it?  :)  It looks like
a really well built piece of hardware and I'd hate to have to just
dismantle it for parts.  It has 64K of memory on board, and empty sockets
which lead me to believe it should be expandable to 256K.  (I did get the
operating manual and it mentions a 128K version.)  Any info beyond the
standard operations, or communications manuals would be helpful.

                Paul Prescott
                via pertilli@cs.utexas.edu