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. 13, 1994
Filed:
Mar. 26, 1993
Gordon T Davis, Raleigh, NC (US);
Donald J Donaghy, Raleigh, NC (US);
Laurence V Marks, Raleigh, NC (US);
Challis L Purrington, Sr, Raleigh, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A processor-based packet memory interface for controlling the transfer of data between multiple communications channels and packet memory in a communications adapter is presented, where the communications adapter uses requestor IDs to identify transmit and receive processes. The processor-based packet memory interface is controlled by a microprocessor configured to perform read and write operations with the communications adapter. The microprocessor is further configured to reserve a plurality of blocks of memory in the packet memory so that the number of communications channels that can be supported is not limited to the number of requestor ID's that can be handled by the communications adapter. The processor-based packet memory interface also includes RAM, for use by the microprocessor, to store pointers to reserved blocks of memory in the packet memory and to temporarily store packet data for transfer between the communications channels and the communications adapter.