A Message Exchange for Computer Programs and Terminals

Abstract

VMH, the Video Graphics System Message Handler, provides interprocess communication control and message switching among users of VGS terminals and application programs and multiaccess facilities in large connected computers-- which, at Rand, includes the facilities of the entire ARPA Computing Network. VMH enables terminals and programs to communicate selectively with each other, either one-to-one or by multiplexing, and similarly enables programs to communicate across the boundaries set by the computer operating system architecture, while preserving message privacy. The Report gives the history, concepts, and implementation data of VMH (written in OS/360) Assembler Language) , describes its important features and commands, and presents a final evaluation.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1972
Accession Number
AD0748986

Entities

People

  • J. Carlstedt

Organizations

  • RAND Corporation

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Application Software
  • Communication Systems
  • Computer Programming
  • Computer Programs
  • Computers
  • Control Panels
  • Control Systems
  • Data Analysis
  • Databases
  • Debugging
  • Graphics
  • Interactive Graphics
  • Language
  • Multiple Access
  • Operating Systems
  • Statistical Analysis
  • Terminals

Fields of Study

  • Computer science

Readers

  • Computer Networking
  • Computer Science.