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. 31, 1993
Filed:
Nov. 13, 1990
Applicant:
Inventors:
Thomas W Lattin, Jr, Houston, TX (US);
Thomas W Grieff, Spring, TX (US);
Ryan A Callison, Spring, TX (US);
Assignee:
Compaq Computer Corp., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
395325 ; 395250 ; 364228 ; 3642383 ; 364239 ; 3642397 ; 364260 ; 3642601 ; 364D / ;
Abstract
A SCSI bus controller which has a separate data path from the SCSI bus to the host bus and a separate command path for use to communicate with a local microprocessor. The local microprocessor is connected to a dual port RAM, the other port of which is connected to a bus master controller linked to the host system. Commands and status are passed via the dual port RAM. Data is passed through a FIFO. The local microprocessor does not have access to the data path but only controls direction of the data flow, the initiation of the sequence and the completion of the sequence.