Accession Number : ADA138152

Title :   Development of a Communications Front End Processor (FEP) for the VAX-11/780 Using an LSI-11/23.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Masty,A F

PDF Url : ADA138152

Report Date : Dec 1983

Pagination or Media Count : 286

Abstract : A Communications Front-End Processor (FEP) was implemented for a Digital Equipment Corporation (DEC) VAX-11/780 using a DEC LSI-11/23 microcomputer. The LSI-11/23 serviced eight DEC VT-100 terminals and communicated with the VAX-11/780 over an Able Computer Technology, Inc Direct Memory Access (DMA) interface. This investigation proceeded from a FEP design provided in a previous work and culminated in the Telecon 'C' compiler language coding of those design specifications. The design was translated into structure charts defining software module functions and interfaces. Program Design Language (PDL) was then used to outline the processing steps in a structured programming format for each software module. A data dictionary was constructed to document the data and functional module interfaces. The code was implemented in a 'top-down' manner. (Author)

Descriptors :   *Communication equipment, *Front end processors, *Interfaces, *Computer programs, Compilers, Programming languages, Computer programming, Data bases, Digital systems, Memory devices, Structural properties, Modular construction, Microcomputers, Computers, Access, Charts, Functions, Formats, Dictionaries, Language, Coding, Theses

Subject Categories : Computer Programming and Software
      Computer Hardware
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE