Accession Number : ADP003534

Title :   The Impact of Nebula, MCF (Military Computer Family), and Ada (Trademark) on Real-Time Embedded Computer Systems,

Corporate Author : RCA GOVERNMENT SYSTEMS DIV MOORESTOWN NJ MISSILE AND SURFACE RADAR

Personal Author(s) : Wuebker,F. E.

Report Date : NOV 1982

Pagination or Media Count : 6

Abstract : The 1862A Instruction Set architecture (ISA) is resulting in a Nebula - Military Computer Family Data Processing System. This combination will provide a significant improvement in software performances for both unit and distributed-processor real-time systems. The performance gain will be obtained from the short, compact code sequences resulting from the inherent power of the ISA and from the inherent machine speed of the Military Computer Family. This gain obviates the need for any assembly-language programming for real-time applications. Productivity, realiability, and maintainability requirements demand that all future real-time applications be written in a higher order language. Experiments to date show that the Ada-Nebula combination results in the best source code to object code expansion values, hence best performance. Of the higher order languages most suited to real-time performance (Fortran, Jovial, CMS-2, and Ada), Ada with an Ada-based program design language provides the capability for the highest productivity. Traceability between design and code, using Ada and Ada PDL, and a machine processable documentation methodology will provide the reliability and maintainability desired by the software community. (Author)

Descriptors :   *Computer program reliability, *Computer communications, High level languages, Embedding, Real time, Maintainability

Distribution Statement : APPROVED FOR PUBLIC RELEASE