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L > LITTON - MONROE > OC-8880   


Litton - Monroe
OC-8880

Info needed about this obscure CP/M computer!

Monroe - a subsidary of Litton Inc. - used to produce and sell calculators for years from 1912.

Very little is known about this CP/M system. To use the floppies you had to type in OPEN FPY0:

____________

Thanks to Jan Söderberg for the pictures.


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Stefano''s link is now broken. I had to move my site, so the link should be http://knut.one/LittonMonroeOC8880.htm 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...

          
Sunday 1st November 2015
Knut (Norway)

http://home.online.no/~kr-lund/LittonMonroeOC8880.htm

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

          
Tuesday 29th July 2014
Stefano

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.

          
Thursday 10th November 2011
Bob Hall (usa)

 

NAME  OC-8880
MANUFACTURER  Litton - Monroe
TYPE  Professional Computer
ORIGIN  Japan
YEAR  1981
BUILT IN LANGUAGE  Unknown
KEYBOARD  Full stroke keyboard with function keys and numeric keypad. 93 keys.
CPU  Z80
SPEED  Unknown
CO-PROCESSOR  Unknown
RAM  16 KB (128 KB max)
ROM  Unknown
TEXT MODES  Unknown
GRAPHIC MODES  Unknown
COLORS  Unknown
SOUND  Unknown
SIZE / WEIGHT  Unknown
I/O PORTS  External disk drive, expansion bus, composite video output (monochrome), AUX serial I/O, COMM I/O, parallel printer interface
BUILT IN MEDIA  One 5.25'' disk drive (300 KB)
OS  CP/M
POWER SUPPLY  PSU built-in
PERIPHERALS  Unknown
PRICE  Unknown


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