The Logical Design of a Transfer Path for the Variable Structure Computer System

摘要

The transfer path is a buffer unit that will be used to direct couple an IBM 7094 to the Variable Structure Computer. In addition to buffering, the transfer path, TP, allows the Variable Structure Computer, V, to control the rate and direction of 7094 computation. Two onecycle transfers executed by the 7094 are conditional upon information contained in V. The TP can electronically stop or start the 7094 at any time; 7094 traps may be initiated by V through the TP. A number of modifications to 7094 logic were required to obtain the desired operation; a description of these modifications has not been included in this report. Reference is made to the 7094 logic pages where TP signals are introduced. The report consists of eight chapters. Chapter I is an introduction to the Variable Structure Computer and a statement of design objectives. Chapter II describes what the TP does and how it interacts with the 7094. Chapter III is a user's manual for the TP. Chapter IV concerns data transmission rates and includes a discussion of 7094 instruction overlap. Chapters V through VIII are a description of the TP logic; the material includes a description of the logical elements, a set of sequence and timing charts, a set of logical equations, implemented logic diagrams, and a brief description of the packaging. The reader must be familiar with the 7094 logic before it is possible to understand the details of the TP logic. (Author)