The Unified Processor, A Microprogrammable Processor.

摘要

This report presents the design of a microprogrammable processor called the Unified Processor (UP). First a brief history of microprogramming is given followed by a description of a present day processor. The architecture of the Interpreter is presented along with several deficiencies that were present in its design. A brief discussion of the microprogamming format of the UP is presented followed by an in-depth description of the UP. The features of the UP that are covered include general registers, special registers, internal bussing, microprogram addressing, and the Barrel Switch. Examples of how each of the various features can be used in included in each section. Finally, the UP is evaluated and recommened changes for a future design presented. (Author)