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:
Nov. 09, 1999
Filed:
Oct. 15, 1997
Gregory Michael Nordstrom, Oronoco, MN (US);
Shawn Michael Lambeth, Pine Island, MN (US);
Paul Edward Movall, Rochester, MN (US);
Daniel Frank Moertl, Rochester, MN (US);
Charles Scott Graham, Rochester, MN (US);
Thomas Rembert Sand, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An I/O system including a processor complex and system main memory connected to I/O adapters via I/O adapters and I/O bus. A message transport mechanism and method stores an upstream message queue and a downstream message queue in system main memory. Queue addresses are stored both in system main memory and designated registers of I/O adapters. The I/O adapters utilize the queue addresses to manage the transfer of downstream command messages and to send upstream response messages to the system main memory via direct memory access across the I/O bus.