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:
Aug. 27, 1991
Filed:
Feb. 03, 1989
Michael A Gagliardo, Shrewsbury, MA (US);
James E Tessari, Arlington, MA (US);
John Lynch, Wayland, MA (US);
Kumar Chinnaswamy, Milford, MA (US);
Digital Equipment Corporation, Maynard, MA (US);
Abstract
In a multi-processing computer system including a plurality of central processing units (CPUs) and input/output (I/O) units, a system memory including a plurality of DRAM-based memory segments, a system control unit (SCU) for operating the CPUs in a parallel fashion and allowing the CPUs and other system units to controllably access addressable segments of system memory, and an interface for establishing communication between the SCU and the system memory and regulating the transfer of memory commands and associated data therebetween, the system memory is configured in the form of at least one independently accessible memory unit having a first dedicated data path for the transfer of read data from addressed memory segments to the interface for transfer to the SCU, a second dedicated data path for transfer of write data received from the SCU through the interface to addressed memory segments, and a third dedicated path for transfer of addresses from the SCU to identify addressed segment of memory.