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This is a collection of user contributed tutorials for TWENEX.ORG. While these tutorials may contain specific information to TWENEX.ORG, they may also be general enough such that other TOPS-20 and TOPS-20 PANDA Distribution users could benefit from them. Access to this WIKI is available by MAILing or SENDing a message to SMJ on TWENEX.ORG.

TOPS-20 Tutorials


  • howto Authoring tutorials, style guidelines, et cetera
  • access Getting and accessing your own TOPS-20 account on TWENEX.ORG
  • starter A starter guide to TOPS-20 aimed at UNIX users
  • EXEC Using EXEC—the TOPS-20 command parser, and TOPS-20 command files
  • batch Running background tasks without user interaction according to schedule

E-Mail and Communication

  • advise ADVISE another's TTY
  • commode A simple remark chat using linked TTYs
  • bboard Shared MAIL folder which acts as a Bulletin Board
  • mm Reading and Sending MAIL via Mail Manager
  • send SENDing and REPLYing to TOPS-20 Instant Message
  • talk Linking TTYs together
  • network Internet (TCP/IP) and DECnet communication options

Languages and Programming

  • Compilers General notes on compiling source code on TOPS-20
  • Assemblers General notes on PDP-10 assembly language programming
  • AID Using Algebraic Interpretive Dialog
  • APL Using the APLSF interpreter
  • C Using the KCC C compiler
  • FORTH Using the FORTH interpreters
  • FORTRAN Using the FORTRAN-20 compiler
  • Lisp Accessing and using LISP
  • MACRO Using TOPS-20 MACRO assembly language
  • MDL Muddling with the MDL programming language
  • MIDAS Using MIDAS assembly language
  • FAIL Using FAIL assembly language
  • Pascal Using the Pascal compiler

Text Editors

  • Default editor Invoking your default editor (CREATE/EDIT)
  • EDIT Using the EDIT text editor
  • EDT-20 Using the EDT-20 text editor
  • Emacs Using the Emacs text editor
  • TECO Using the TECO and Video TECO (TV) text editors

(The editor SED is also listed in @HELP NEW-USER, but the executable file is corrupt and inoperative.)


  • Haunt A haunted house text adventure game programmed by John Laird in 1979 using the rule-based language OPS4.
  • Star Trek (Space War) The text-based strategy game inspired by the television series Star Trek popular on minicomputers, mainframes, and early PCs in the 1970s and -80s.
  • Zork “The classic underground maze/puzzle.”
start.txt · Last modified: 2024/06/20 01:29 by papa