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:
Oct. 13, 1992
Filed:
Sep. 29, 1989
Robert C Weppler, Mayfield Heights, OH (US);
Allen-Bradley Company, Inc., Milwaukee, WI (US);
Abstract
A node adapter chip for linking a node microprocessor to a serial data link incorporates a read/write circuit and an interrupt processing means to allow increased flexibility in connecting the adapter to different node microprocessors with different interface protocols. The read/write input circuit accepts dual strobe or single strobe type read/write commands and the interrupt processor accepts either conventional interrupt handling or 'polled' operation for use with microprocessors that do not have interrupt capabilities. A flag multiplexer allows the controller in the node adapter to receive status information from a serial interface in the adapter without the need for extra data transfer cycles.