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:
May. 26, 1992
Filed:
Apr. 21, 1989
Alan R Clark, Endicot, NY (US);
Joseph P Higham, Endicot, NY (US);
James E Hughes, Hallstead, PA (US);
James W Valashinas, Endicott, NY (US);
International Business Machines Corp., Armonk, NY (US);
Abstract
A bus-to-bus adapter is provided for coupling the input/output bus of a first data processor to the input/output bus of a second and different type of data processor. The adapter enables the transfer of data and messages from the first processor to the second processor and vice versa. The adapter includes a buffer storage unit and control logic for enabling multiple data buffers to be provided for enabling multiple independent data transfer operations to be performed in a concurrent manner. The control logic also includes a mechanism for allowing the reading out of data from a data buffer to begin before such data buffer has received all of its incoming data. The adapter further includes a programmable service time allocation mechanism for limiting message service time relative to data transfer service time and for providing different amounts of data transfer service time for different ones of the multiple data buffers.