Solid Logic Design Automation

Abstract

This paper describes the unique features of a set of IBM 7090 programs which provide design assistance to engineers who use Solid logic Technology. These programs were applied in the design of the IBM System/360.

Exclusive simulation of activity in digital networks

“…Taking "snapshots" of a digital network under operation has led to the conclusion that the average percentage of logically active elements and interconnections is very small, and a specific value of 1 percent has been reported [1]. Analyzing a network A^ in terms of FIG.…”

“…The existence of such paths of activity suggests a simulation technique which follows these paths and avoids idle elements. Simulation techniques of this type have been developed and apphed to neural networks by Reiss [3,1960], to digital networks by Case et al [1,1964], and are inherent in simulation languages such as SIMSCRIPT [2].…”

Quality of designs from an automatic logic generator (ALERT)

“…Logic generators such as ALERT should be distinguished from other design automation programs. Much of the development of new computers has been partially or fully automated, including wire routing, module placement, partitioning, circuit selection, checking, simulation, test generation, documentation and manufacturing [i], [3]. These automated systems, however, still rely on the human designer and engineer to prepare the logic design by hand before they can be used.…”

A language to describe and simulate multiprocessor computer systems

“…The program is fairly straight forward, in that if the computer has been described correctly, the order of execution of the instructions should be accord ing to their addresses 0, 1,2,3,4,7,5,6.…”