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. 19, 1997
Filed:
Aug. 30, 1994
Nader Amini, Boca Raton, FL (US);
Richard Louis Horne, Boynton Beach, FL (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A bus interface unit for passing data between an I/O bus and a system bus in a dual bus computer system is provided. The bus interface unit has incorporated therein an address listing and compare function to determine whether a requesting device on the I/O bus is to read data from or write data to an address on the system bus. If so, the bus interface unit allows passing of the data therethrough. If not, the system bus is relinquished and the requesting device writes to the address on the I/O bus. Also, compare logic is incorporated in the bus interface unit which decodes system bus addresses originated from a system bus controller such as the DMA, to determine whether the destination of the transfer is to system memory or the I/O bus.