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:
Sep. 12, 1989
Filed:
Mar. 09, 1987
Kenneth J Burkhardt, Jr, Quakertown, NJ (US);
Jay L Gerbehy, Califon, NJ (US);
Theodore J Skapinetz, Sommerville, NJ (US);
Patrice M Bremond-Gregoire, Sommerville, NJ (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
Interprocessor message communication synchronization apparatus and method for a plurality of processors connected to a system bus where one processor desiring to send a control signal to another processor, broadcasts an input/output write instruction on the system bus along with the address of the receiving processor and a data field representative of the control signal to be transmitted. Apparatus associated with the receiving processor includes a decoder that responds to the input/output write instruction to enable a register when the address transmitted on the bus matches its address. The enabled register receives the data signals from the bus to set therein the appropriate control signal represented by the data. The stages of the register are connected to the associated control signal inputs of the other processor. In this manner the one processor may transmit a message synchronizing interrupt to the other processor.