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.

Date of Patent:
Jul. 09, 1996

Filed:

Dec. 23, 1993
Applicant:
Inventors:

Larry L Byers, Apple Valley, MN (US);

Joseba M De Subijana, Minneapolis, MN (US);

Wayne A Michaelson, Circle Pines, MN (US);

Assignee:

UNISYS Corporation, Blue Bell, PA (US);

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395800 ; 39518209 ; 395307 ; 3642283 ; 36423223 ; 3642401 ; 3642405 ; 3642664 ; 364D / ;
Abstract

A microsequencer bus controller system provides a flexible and efficient mechanism for controlling multiple gate arrays called stations embedded within a larger computer system. A control store memory, loaded at system initialization time, holds fixed-length instructions simultaneously executed by dual reduced instruction set (RISC) microprocessors which interface with the multiple stations over a bi-directional bus. The master microprocessor compares the result of the processing of each instruction with the slave microprocessor's result to detect any differences, thereby minimizing error latency. Master and slave microprocessors each control half of the stations on the bus. Data widths of 32-bit and 36-bit words are supported by the microprocessors, bus, and stations.


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