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This mini forum is intended to provide a simple means of discussion about the Litton - Monroe OC-8880 computer. If you want to share your own experience or memories, or add relevant information about this system: post a message!

  Click Here to add a message in the forum


Friday 16th August 2019
Nils H (Sweden)

The Monroe OC8800 could probably run CP/M, but it was offered with another operating system called OS8MT which was a multi-tasking 8-bit operating system.

There was a Basic interpreter that is related to the Luxor ABC800 series computers and the Diab Basic on the Motorola Unix computers.

There''s even an MS-DOS version of that Basic named basic2pc. There are however some differences in instruction set, but those differences are minor. Search for BASIC2PC.ZIP to find it. The basic is a semi-compiling basic which makes it fairly fast when executing.

One Monroe-specific instruction that I happen to remember is "OPTION EUROPE", which allowed you to programmatically determine if there should be a comma or dot as decimal separator.

Sunday 1st November 2015
Knut (Norway)

Stefano''s link is now broken. I had to move my site, so the link should be and yes the 2KB EPROM is correctly a dump of the boot ROM of the OC8800 but it contains only initialization and ability to load and execute a bootsector from a floppy. Not very useful if you don''t have a bootable floppy for this computer (probably CP/m). I have the machine but no floppy...

Tuesday 29th July 2014

The MESS project claims they need its ROM dump.
Pehaps the 2kb image in this link is useful ?

Thursday 10th November 2011
Bob Hall (usa)

The OC8800 and 8820 were manufactured in Monroe''s plant in Lexington South Carolina. This was the first of two attempts of Monroe to enter the desktop computer business. Operating memory was either 256k or 512K. dual 6" floppies and optional 5 or 10 Megabyte external hard drives. The model shown was intended as a system dedicated to educational use. This incorporated early verisions of software to allow a student to draw and color objects. The acutal commerical version was a single cabinet design with a 80 column dot matrix printer using 4" calculator rolls the display was an orange monochrome 8" monitor.

Saturday 24th February 2007
PeriSoft (New York, USA)

Gotta love the lace doily under the monitor. Classic!

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