Commercial Operating System

Product by Digital Equipment Corporation

Operating system

Commercial Operating System (COS)

Developer| Digital Equipment Corporation
Initial release| 1972[1]
Available in| English
Platforms| PDP-8, PDP-11, DECmate II
License| Proprietary
Preceded by| MS/8

Commercial Operating System (COS) is a discontinued family of operating systems from Digital Equipment Corporation.[2]

They supported the use of DIBOL, a programming language combining features of BASIC, FORTRAN and COBOL.[3] COS also supported IBM RPG (Report Program Generator).[1]

## Implementations

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The Commercial Operating System was implemented to run on hardware from the PDP-8[4] and PDP-11 families.

### COS-310

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COS-310 was developed for the PDP-8 to provide an operating environment for DIBOL. A COS-310 system was purchased as a package which included a desk, VT52 VDT (Video Display Tube), and a pair of eight inch floppy drives. It could optionally be purchased with one or more 2.5 MB removable media hard drives. COS-310 was one of the operating systems available on the DECmate II.[a][b]

### COS-350

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COS-350 was developed to support the PDP-11 port of DIBOL, and was the focus for some vendors of turnkey software packages.[5]

Pre-COS-350, a PDP 11/05 single-user batch-oriented implementation was released; the multi-user PDP 11/10-based COS came about 4 years later.[1] The much more powerful PDP-11/34 "added significant configuration flexibility and expansion capability.": p.69

## See also

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* Comparison of operating systems
* Timeline of operating systems

## Notes

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1. ^ the other was WPS-8
2. ^ There was a product named COS-300, and some DEC manuals are named with both 300 & 310.

## References

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1. ^ a b c DIGITAL EQUIPMENT CORPORATION - Nineteen Fifty-Seven To The Present (PDF). Digital Equipment Corporation. 1978.
2. ^ Binh Nguyen. Linux Dictionary. p. 424., citing "QUECID".
3. ^ "Time-Sharing Uses Emphasized For DEC Datasystem 350 Series". Computerworld. July 30, 1975. p. 19\. "Dibol Under COS: The series operates under the Commercial Operating System (COS) 350, which provides timesharing with a high-speed response."
4. ^ PDP 8/e Small Computer Handbook. Digital Equipment Corporation. 1973. pp. 2-19 thru 2-20.
5. ^ "Time-Sharing Uses Emphasized For DEC Datasystem 350 Series". Computerworld. July 30, 1975. p. 19.

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Key people|

* Ken Olsen (founder and CEO, 1957–1992)
* Harlan Anderson (co-founder)
* Gordon Bell (VP of engineering)
* Robert Palmer (CEO, 1992–1998)

Instruction set
architectures,
processors|

| PDP-11|

* LSI-11
* F-11
* T-11
* J-11

|

VAX|

* V-11
* MicroVAX 78032
* CVAX
* SOC
* Rigel
* Mariah
* NVAX

Alpha|

* Alpha 21064
* 21066
* 21068
* Alpha 21164 (21164PC)
* Alpha 21264
* Alpha 21364
* Alpha 21464

Other|

* MicroPRISM
* StrongARM

Computer
terminals|

* VT05 (1970)
* GT40 (1972)
* VT50/VT52 (1975)
* VT55
* VT62
* VT100 (1978)
* VT101
* VT102
* VT103
* VT105
* VT131
* VT180
* VT220 (1983)
* VT240
* VT241
* VT320 (1987)
* VT330
* VT340
* VT420 (1990)
* VT1000 (1990)
* VT510 (1993)
* VT520 (1994)
* VT525

Operating
systems|

* DECsys
* 4K DMS
* COS
* TOPS-10
* RSX-15
* TSS/8
* OS/8
* DOS-11
* RT-11
* RSTS/E
* RSX-11
* IAS
* DSM-11
* TOPS-20
* VAX/VMS
* VAXELN
* Ultrix
* Taos
* MICA
* OZIX
* Digital UNIX

Programming
languages|

* BASIC-8
* DIBOL
* FOCAL
* MACRO-10
* MACRO-11
* MUMPS
* VAX MACRO
* DIGITAL Command Language

Character sets|

* Code page 1100 (Multinational)
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* Hebrew
* National Replacement
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* Special Graphics
* Technical

Bus standards|

* Digital Storage Systems Interconnect
* Massbus
* Q-Bus
* Standard Disk Interconnect
* Synchronous Backplane Interconnect
* TURBOchannel
* Unibus
* VAXBI

Other hardware|

* DECserver
* DECtalk
* DECtape
* DECwriter
* Digital Linear Tape
* Dynamically Redefined Character Set
* Firefly
* Flip-Chip module
* Gold key
* LK201
* LK421
* Mass Storage Control Protocol
* PALcode
* RA90
* RK05
* RL02
* Star coupler
* System Module
* TU81

Related topics|

* AdvFS
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* CPU Wars
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* DECUS
* HP-Interex
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* The Ultimate Entrepreneur
* VT640
* WPS-8

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Time-sharing operating systems

* Time-sharing system evolution

* BBN Time-Sharing System
* Berkeley Timesharing System
* Burroughs MCP
* CDC Kronos
* Compatible Time-Sharing System (CTSS)
* COS
* CP/CMS
* Cray Time Sharing System (CTSS)
* DTSS
* EMAS
* ITS
* LTSS
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* Multics
* MUSIC/SP
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* NOS/VE
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* ORVYL and WYLBUR
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