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TOPS-20

The TOPS-20 operating system by Digital Equipment Corporation (DEC) is a proprietary OS used on some of DEC's 36-bit mainframe computers. The Hardware Reference Manual was described as for "DECsystem-10/DECSYSTEM-20 Processor" (meaning the DEC PDP-10 and the DECSYSTEM-20).

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Available in
English
Default user interface
Command-line interface
Developer
Digital Equipment Corporation
Initial release
1976; 50 years ago (1976)
Latest release
7.1 / June 1988; 38 years ago (1988-06)
License
Proprietary

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Overview

TENEX

TOPS-20 capabilities

TOPS-20 today

Advanced semantic analysis

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Map overview Semantic statistics

TOPS-20

Nodes48
Edges47
Triples111
Avg. degree1.96
Density0.041667
Components1

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TOPS-20

Top relations

related to Further reading · 19
TOPS-20 → AFIPS Proceedings, Chris Ryland, Cruz, Daniel, DECSYSTEM-20 Assembly Language Guide, FJCC, Frank, Implementation, KI10, Management, Murphy, NCC, Running TOPS-20 V4, SIMH Emulator, Storage Organization, TENEX, TENEX Panel Session, TOPS-20 User's Guide Archived, Wayback Machine
related to PA1050 · 14
TOPS-20 → DEC, JSYS, Model, PA, PA1050, PAT, PDP, Some, Sometimes PA1050, The, These, TOPS-10 Operating System's, Unimplemented User Operation, UUO's
related to TENEX · 13
TOPS-20 → After Digital, BBN, Bolt Beranek, DEC PDP-10, Digital, Digital's PDP-10, In, KI-10, KI-10s, Newman, PDP-10, TENEX, To
related to External links · 12
TOPS-20 → Archived, DEC, Development, Forever, Manuals, Origins, Panda TOPS-20, PDP-10, PDP-10 Software Archive, SDF Public Access TWENEX, SIMH Simulator, Wayback Machine
related to JSYS features · 11
TOPS-20 → Get Job File Number, GTJFN, Internally, JFN, JSYS, Jump, OPENF, Operands, Some, SYStem, These
related to TOPS-20 capabilities · 8
TOPS-20 → Commands, EXEC, EXEJSYS, Jump, MAC, MACro-language, System, The
related to TOPS-20 today · 8
TOPS-20 → Currently TOPS-20, Distribution, Mark Crispin's TOPS-20 Panda, Paul Allen, SDF Public Access Unix, See, System, XKL TOAD-2
related to PCL (Programmable Command Language) · 7
TOPS-20 → DECLARE, EXEC, Filetype, Newly, PCL, Programmable Command Language, TOPS-20 EXEC
related to Command processor · 3
TOPS-20 → Command, Rather, TOPS-20-specific
related to Commands · 3
TOPS-20 → ACCESSADVISEAPPENDARCHIVEASSIGNATTACHBACKSPACEBLANKBREAKBUILDCANCELCLOSECOMPILECONNECTCONTINUECOPYCREATECREFCSAVEDAYTIMEDDTDEASSIGNDEBUGDEFINEDELETEDEPOSITDETACHDIRECTORYDISABLE…, The, TOPS-20 Command Processor

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Important terminology

tenex pdp-10 system dec tops-10 operating pa1050 calls run command processor digital commands available language named jsys pcl computers access

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
TOPS-20Available inEnglish1.00infobox
TOPS-20Default user interfaceCommand-line interface1.00infobox
TOPS-20DeveloperDigital Equipment Corporation1.00infobox
TOPS-20Initial release1976; 50 years ago (1976)1.00infobox
TOPS-20Latest release7.1 / June 1988; 38 years ago (1988-06)1.00infobox
TOPS-20LicenseProprietary1.00infobox
TOPS-20Marketing targetMainframe computers1.00infobox
TOPS-20OS familyTENEX1.00infobox
TOPS-20Preceded byTENEX1.00infobox
TOPS-20Supported platformsPDP-101.00infobox
TOPS-20Working stateDiscontinued1.00infobox
TOPS-20Written inAssembly language1.00infobox
TOPS-20is aexcellent longer history.Panda TOPS-20 distribution.SDF Public Access TWENEX.SIMH Simulator capable of simulating the PDP-10 and running TOPS-20.Manuals for DEC 36-bit computers…0.90text

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