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:
Nov. 30, 1993
Filed:
Jun. 28, 1991
Applicant:
Inventors:
Assignee:
Digital Equipment Corporation, Maynard, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518904 ; 36518907 ;
Abstract
In an apparatus including a first and second processor coupled to a shared bit-RAM memory, simultaneous write operations can be performed without internal race conditions in the memory. Rather than using arbitration, a write is generated by logic in each processor only when data to be written is different from data currently stored in a given location. A processor can write data to the bit-RAM only when a write pulse has been generated by that processor. Clocking signals from the processors are used to insure that a read and a write operation are not performed by two separate processors.