Safeguard Data-Processing System : Process-System Testing and the System Exerciser

The debugging of SAFEGUARD software was performed in phases, each with a unique environment, problems, and debugging tools. The unique aspects of each phase are described here with special emphasis on the debugging tools used. Although the multiprocessor configuration introduced new kinds of software "bugs" and complicated the debugging problem, the real-time character of the system had a greater overall impact.

Section: 22mentioning

confidence: 99%

“…At regular intervals, operatingsystem releases provided new capabilities to the application software. Special drivers were used to simulate the missiles and radar, later to be replaced by the system exerciser 4 when it became available. During…”

Section: Environmentmentioning

confidence: 99%

Safeguard Data-Processing System: Debugging a Real-Time Multiprocessor System

Phillips¹

1975

Safeguard Data-Processing System: Process Design in the Structure of Real-Time Software Systems

Doyle¹,

Gibbons²

1975

Process design, structuring the real‐time program for the CLC, was one of the difficult aspects of Safeguard software development. Initially, there were no significant guidelines or criteria. In the course of the project, basic process‐design rules were developed and significant experience was acquired. Some techniques that emerged are the use of short‐running, asynchronous tasks; overlays to minimize storage requirements; and multiple storing of programs to minimize processor queuing.

Safeguard Data-Processing System: System Error Control

Gawron¹

1975