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:
Feb. 19, 1991
Filed:
Jul. 10, 1989
Daniel S Tuchler, Newton, MA (US);
Bruce S Allen, Concord, MA (US);
Jupiter Technology, Inc., Waltham, MA (US);
Abstract
A data transfer system including a byte bus which provides an eight-bit data transfer between a processor and a plurality of port circuit boards. The system provides dual address and interrupt functionalies in the processor-initiator data transfers which may be initiated in either direction. The processor data transfers use a two-level address management scheme, which once initialized provides rapid access to a select number of address locations from a large number of available addresses allocated to a variety of port circuit boards and addressable functions thereon. Furthermore, the select addresses are assignable according to an interrupt priority value which allows for the rapid identification of the address requesting an interrupt service, and also for the subsequent provision of an interrupt service vector to the processor to provide the appropriate processing of the requested interrupt. The resulting apparatus and method provides substantial compaction of the communication data distribution system and software driving utilities.