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. 05, 1986
Filed:
Feb. 14, 1983
Frederick T Blount, Hopewell Junction, NY (US);
Robert S Capowski, Verbank, NY (US);
Daniel F Casper, Poughkeepsie, NY (US);
Lawrence R DelSonno, Beacon, NY (US);
Robert F Geller, Wappingers Falls, NY (US);
Joseph M Kusmiss, El Paso, TX (US);
Terrence K Zimmerman, Red Hook, NY (US);
International Business Machines Corp., Armonk, NY (US);
Abstract
A channel communicator CC has a storage array for holding an entry for each channel and for holding a busy vector and an interrupt vector that each have a bit for each channel. The CC is connected between the input bus and the output bus that connect the channels and an I/O processor IOP to processor main store. A message to the CC includes the ID of the channel that the message is to or from and the CC uses this ID as an address for accessing a channel entry or a bit in a vector. The message also carries a command that controls the CC to store a data portion of a message or to fetch a channel entry or a vector from the array and load it onto the output bus addressed to the IOP or to one of the channels. The command also controls addressing a particular one of the vectors. The CC also has means responsive to a command to perform a sequence of operations for testing the vectors and for testing fields of an entry in the array and for using the results of the test to control the execution of the command.