Introduction

UOS is a multiuser, general-purpose timesharing system. It can serve as the controller for embedded controllers, web servers, timesharing, development, and other purposes. Although hardware may provide lower limitations, UOS can serve up to 65,536 network disks, and up to 1,507,328 directly-connected disks or other random-access storage devices.

UOS consists of the UOS Executive, the Init secondary bootstrap, standard device drivers, and system utilities (known as Commonly Used System Programs or CUSPs). Some of the major features of UOS include the following:

Interactive timesharing
Scalability
Platform agnostic
User privileges
Dynamic allocation and sharing of system resources
Multi-tasking
File processing and sharing
Interprocess communication
Network support
Multiple File Systems
Mirrored disks
Network storage
Clusters
Disk caching
Multi-core
CDROM/DVDROM support
Magnetic tape support
Multiple shells
Shared common code
Internationalization support
Multi-lingual programming support
RAM Disk support
Operator services
Hardware error detection and logging
System maintenance tools
System reliability features