MINICOMPUTER OPERATING SYSTEMS

This category includes single-user and small multiuser operating systems for minicomputers. Real-time OSs are listed in a later section.

AMIGO/300

Small, user-friendly OS for the Hewlett-Packard 300. Late 1970s [Carpenter 1979].

AMS

Advanced Monitor System. A single user interactive disk or tape OS for the PDP-9 & PDP-15. Digital Equipment Corp., Late 1960s.

AOS

Advanced Operating System for Data General Eclipse and MV series. Late 1970s.

BCM

Basic Control Monitor for Xerox 530. Early 1970s [Datapro 1974].

BCS

Basic Control System for HP 2100. Early 1970s [Datapro 1974].

BEST

Business Executive System for Timesharing. OS for Qantel Minicomputers [Datapro 1974].

BEST

Basic Executive & Timekeeper. OS for Varian minicomputers. Early 1970s [Datapro 1974].

BMS

Basic Monitor System for the DEC PDP-9 and PDP-15. Early 1970s [Datapro 1974].

BOS

Basic OS for Interdata (later Perkin-Elmer) Minicomputers. Early 1970s [Datapro 1974].

BOS

Batch operating system for Honeywell System 700.

BOS

OS for Billings computers. Late 1970s(?) [Computerworld 1984].

BOS/5

Business Operating Software. Business oriented OS for Z80, PDP-11, 8086, and 68000. BOS National, Inc. Early 1980s [Mini-Micro 1986].

BOSS

Basic OS Software for Basic/Four 350/400/500. Includes monitor, realtime executive, BASIC. Early 1970s [Datapro 1974].

BOSS-2

OS for the RC-4000 Computer.

BOSS-15

Batch OS for the DEC PDP-15. Late 1970s [Datapro 1974].

BPS-99

Business oriented operating system for the GRI-99. Mid 1970s.

CAPS-8

Cassette Monitor system for the DEC PDP-8. Early 1970s [Datapro 1974].

CAPS-11

Cassette Monitor System for the DEC PDP-11. Early 1970s [Datapro 1974].

CiMOS

Batch oriented disk operating system for the Cincinnati Milacron CIP/2200. Early 1970s [Datapro 1974].

COS

Cassette OS for Computer Automation Alpha LSI and Naked Mini LSI. Early 1970s [Datapro 1974].

COS

Commercial Operating System. Early OS for the PDP-11.

COS

Concurrent Operating System. Provided limited multiprogramming for Univac 9200, 9300. Early 1970s [Datapro 1974].

COS

Operating System for GEC Computers. Early 1970s [Datapro 1974].

COS300

Commercial data management system for the PDP-8. Late 1970s [Datapro 1974].

CP-6

Operating System for the Honeywell DPS 8C/L66. Early 1980s? [Computerworld 1984].

CPF

Control Program Facility. Operating System for the IBM System 38. Early 1980s [Taylor 1981].

CPPS

Card/Paper Tape Programming System for the IBM 1130. Early 1970s [Datapro 1974].

CPS

An early OS for DEC minicomputers. Late 1960s [Cederquist 1970].

CTOS

Cassette Tape OS for Datapoint 1100, 2200, 5500. Late 1970s [Datapro 1974].

CTS-300

Commercial single or multiuser OS for small PDP-11 systems. Digital Equipment Corp. [Digital 1984].

DBLDOS

OS for the Tandy TRS-80. Simple updates to TRSDOS to support the Percom double-density board. Percom Data Co. Early 1980s [Kelly 1981].

DBOS

Disk/Drum Based OS for General Automation SPC-16 & System 18/30. Late 1970s [Datapro 1974].

DMS

Disk Monitor System for IBM 1130. Early 1970s [Datapro 1974].

DMS

Disk Monitor System for General Automation System 18/30. Early 1970s [Datapro 1974].

DNOS

OS for NCR computers. Early 1980s? [Computerworld 1984].

DOS

OS for Datapoint minicomputers. Late 1970s [Computerworld 1984].

DOS

Disk OS for Interdata computers; Lockheed computers; HP 2100; Datapoint 1100, 2200, 5500; DEC PDP-11; Prime 100,200,300; Four-Phase System IV; GEC Computers; Computer Automation computers. Early 1970s [Datapro 1974].

DOS-15

Disk OS for DEC PDP-15. Early 1970s [Datapro 1974].

DOS-99

Single User operating system for the GRI-99 Minicomputer. GRI Corp. Late 1970s [Mooney 1979].

DX-10

Operating System for the TI-990. Late 1970s? [Computerworld 1984].

EDOS

Operating System for the Hitachi 8400. Early 1970s.

EGDON

Serial batch OS for the English Electric KDF9, designed to support program development. Mid 1960s [Burns et al 1966].

EGDON 3

OS for the British KDF9. Based on EGDON. Late 1960s [Poole 1968].

ELDON 2

Operating System for the British KDF9. Late 1960s [Wells 1971].

ELF

A multiprogrammed OS for the PDP-11.

Foreground/Background/8

Experimental Foreground/Background OS for the PDP-8. Late 1960s [Alderman 1969].

FSOS

Free Standing Operating System. Basic memory-resident OS for General Automation SPC-16 mini. Early 1970s [Datapro 1974].

IMOS

OS for NCR 8200 series. Early 1980s? [Computerworld 1984].

IRX

OS for NCR 8200 series. Early 1980s? [Computerworld 1984].

ITS

Operating System for the PDP-10.

MAX

Principal OS for Mod Comp Computers. Early 1970s [Datapro 1974].

Min I

Basic Operating System for the ModComp Computers. Early 1970s [Datapro 1974].

MOD4

OS for the Honeywell Series 200. Late 1960s [Sayres 1971].

MOD-400

OS for the Honeywell VPS 6. Early 1980s? [Computerworld 1984].

MODUS4

OS for Computer Technology minicomputers. Late 1970s [Datapro 1974].

MOS

Master OS for Varian minicomputers. Tape or disk based batch system.

MOS

Minimum Operating System. Card-based batch monitor for Univac 9200, 9300. Early 1970s [Datapro 1974].

MOS

Multiprogramming OS for NCR Century 300 computer. Late 1960s.

MPE-3000

OS for HP 3000. Early 1970s.

MTDS

Magnetic Tape OS for Computer Automation Alpha LSI & Naked Mini LSI. Early 1970s [Datapro 1974].

MTOS

Magnetic Tape OS for Datapoint 1100, 2200, 5500. Early 1970s [Datapro 1974].

MTS

Magnetic Tape System for HP 2100. Early 1970s [Datapro 1974].

MU5

OS for the MU5 computer at the U. of Manchester (?). Early 1970s. [Morris et al 1972].

MUMPS

Multi-user multiprogramming, database oriented OS for DEC computers. Early 1970s [Datapro 1974].

NCOS

Nonconcurrent OS. Tape or disk based OS for Univac 9200 & 9300. Early 1970s [Datapro 1974].

NUCLEUS

Operating System for GEC Computers. Early 1970s [Datapro 1974].

OS/4 and OS/7.

Operating Systems for UNIVAC 9700. Late 1960s (?).

OS6

Experimental OS for a small computer. Early 1970s [Stoy & Strachey 1972].

OS7

Operating System for HITAC 8700/8800. About 1975.

OS/8

Operating System for the PDP-8. Ancestor of RT-11. Digital Equipment Corp. Mid 1970s [Datapro 1974].

OS/200

OS for Honeywell Series 200 family. Late 1960s.

OS2000

OS for Honeywell 200/2000. Early 1970s(?).

PDP-6 Monitor

Monitor System for the DEC PDP-6. Mid 1960s [Bell et al 1978].

PDP-10/50 Swapping Monitor

An early OS for the DEC PDP-10. Late 1960s [Thomas 1972].

P/OS

Professional Operating System. Standard OS for the PRO-350 and PRO-380. Derived from RSX-11. Digital Equipment Corp. Early 1980s.

PrimOS

OS for the PR1ME minicomputers. Early 1980s [Computerworld 1984].

PRO/TSX-PLUS

Version of TSX-PLUS for the PRO-350.

PTOS

Paper Tape OS for the Cincinnati Milacron CIP/2200.

RC-4000

Research OS for RC-4000 Computer. [Brinch Hansen 1973].

RDOS

Single-User OS for the Data General NOVA. Mid 1970s [Datapro 1974].

RMS

OS for Datapoint computers. Early 1980s? [Datapoint 1984].

RSTS

Multiuser OS for DEC PDP-11. Digital Equipment Corp. [Digital 1984].

RT-11

Single User OS for DEC PDP-11. Digital Equipment Corp. About 1975. [Digital 1984].

SCP

System Control Program. Basic OS for the Burroughs B700 series. Early 1970s [Datapro 1974].

SCP

System Control Program. Multiprogramming OS for the IBM System/3. Early 1970s [Taylor 1981].

SEL 810A/810B OS

Batch Serial Operating System for the SEL 810A/810B minicomputer. Late 1960s [Sayres 1971].

SOS

Standalone OS for Data General Nova & Supernova. Early 1970s [Datapro 1974].

SSP

System Support Program. Multitasking OS for the IBM System/34. Mid 1970s [Taylor 1981].

SUN

General Purpose OS kernel for the HP 9000 Series 500. Early 1980s [Georg et al 1984].

SYSEX

System Executive. A time-sharing monitor for SIGMA/2 and small IBM S/360 computers. Early 1970s [Reiter 1972].

TOS

Teletype Operating System for the Microdata 1600 & 3200 minicomputers. Early 1970s [Datapro 1974].

TRIPOS

A portable OS for Minicomputers. PDP-11, 68000 series, 32000 series. Late 1970s. [Richards et al 1979].

VENUS

Experimental OS for a modified Interdata minicomputer, based on matching the computer architecture to the operating system. Early 1970s [Liskov 1971, Tschiritzis & Bernstein 1974].

VOS

Operating System for Harris 600, 700, 800 computers. Early 1980s? [Computerworld 1984].

VULCAN

Operating System for Harris computers. Early 1980s? [Computerworld 1984].

XOS

Batch Processing OS for the Xerox Data Systems SIGMA Computers. Early 1970s(?).