The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 09, 1997
Filed:
Nov. 08, 1995
Rahul Razdan, Princeton, MA (US);
Bill Grundmann, Westboro, MA (US);
Michael D Smith, Belmont, MA (US);
Digital Equipment Corporation, Maynard, MA (US);
Abstract
A new class of general purpose computers called Programmable Reduced Instruction Set Computers (PRISC) use RISC techniques a basis for operation. In addition to the conventional RISC instructions, PRISC computers provide hardware programmable resources which can be configured optimally for a given user application. A given user application is compiled using a PRISC compiler which recognizes and evaluates complex instructions into a Boolean expression which is assigned an identifier and stored in conventional memory. The recognition of instructions which may be programmed in hardware is achieved through a combination of bit width analysis and instruction optimization. During execution of the user application on the PRISC computer, the stored expressions are loaded as needed into a programmable functional unit. Once loaded, the expressions are executed during a single instruction cycle.