Click Here to visit our Sponsor
The History of Computing The Magazine Have Fun there ! Buy goodies to support us
  Mistake ? You have mr info ? Click here !Add Info     Search     Click here use the advanced search engine
Browse console museumBrowse pong museum


Ready prompt T-shirts!

see details
ZX81 T-shirts!

see details
ZX Spectrum T-shirts!

see details
Spiral program T-shirts!

see details
Atari joystick T-shirts!

see details
Arcade cherry T-shirts!

see details
Battle Zone T-shirts!

see details
Vectrex ship T-shirts!

see details
Moon Lander T-shirts!

see details
C64 maze generator T-shirts!

see details
Atari ST bombs T-shirts!

see details
Competition Pro Joystick T-shirts!

see details
Elite spaceship t-shirt T-shirts!

see details
Pak Pak Monster T-shirts!

see details
BASIC code T-shirts!

see details
Pixel adventure T-shirts!

see details
Vector ship T-shirts!

see details
Breakout T-shirts!

see details


OSM Computer Corporation

OSM Computer Corporation, based in Santa Clara California, produced several multi-user CP/M computers called Zeus.

The first Zeus system was released in 1981. It looks like a mini-computer with a fairly big case that can house mutimple user boards. Each user has a dedicated Z80A-base-single board that fits into the system mainframe.

The modular, stackable system can expand up to 64 users. To add a user, you need a dumb terminal and a user "microcomputer" module added into the mainframe.

The Zeus computer use modular hard disk storage giving a capacity from 34 Mb to 600 Mb. It also features tape backup and shared printers with spooling and queuing.

One singularity of the Zeus is that it is equiped with a battery/recharger system that provides up to 20 minutes of operating power in case of power failures, lightning ot voltage variations.

Zeus uses MUSE as its operating system, a CP/M compatible OS for multi-user computers.

One difference between OSM's approach and that of other manufacturers is that OSM does not require the individual CPU/memory cards to share the same S100 bus. The OSM design approximates that of a local network, in that the only real connection between the users is a data bus carrying information to and from the master CPU, which handles the disk chores.

OSM also differs from some of the other multi-user systems in that each user's CPU/memory combination also includes terminal and printer I/O. Thus, except for the disk drive, each user has a complete computer system responding to his commands, and the only contention among users is the disk drive itself. OSM resolves this problem by providing 32Kb of memory for the master processor, which acts as a buffer between user requests and the disk drive.

We need more info about this computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.
Please consider donating your old computer / videogame system to or one of our partners from anywhere in the world (Europe, America, Asia, etc.).



NAME  Zeus
MANUFACTURER  OSM Computer Corporation
TYPE  Professional Computer
YEAR  1981
CPU  Zilog Z80A
SPEED  Unknown
RAM  Uknown
TEXT MODES  80 x 25 CP/M standard
COLORS  monochrome through terminal display
BUILT IN MEDIA  Hard disk (from 34 to 600 Mb), Tape backup
OS  MUSE operating system (CP/M compatible)

Please buy a t-shirt to support us !
Ready prompt
ZX Spectrum
Arcade cherry
Spiral program
Atari joystick
Battle Zone
Vectrex ship
C64 maze generator
Moon Lander
Competition Pro Joystick
Atari ST bombs
Elite spaceship t-shirt
Commodore 64 prompt
Pak Pak Monster
Pixel Deer
BASIC code
Shooting gallery
3D Cubes
Pixel adventure
Vector ship

Related Ebay auctions in real time - click to buy yours

see more OSM Computer Corporation Zeus Ebay auctions !

Click here to go to the top of the page   
Contact us | members | about | donate old-systems | FAQ
OLD-COMPUTERS.COM is hosted by - NYI (New York Internet) -