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:
Jun. 04, 1996
Filed:
Mar. 31, 1994
Arthur L Chin, Boca Raton, FL (US);
Serafin J Garcia, Jr, Lake Worth, FL (US);
Don S Keener, Boca Raton, FL (US);
Gregory J Moore, Boca Raton, FL (US);
Stephanie P Payne, Boca Raton, FL (US);
Eric S Stine, Delray Beach, FL (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A digital bus circuit having an Address/Data port select decoder 170 in circuit communication with a Selector 194, a Data Port Buffer/Register 181, and an Address Port register 208. The Selector 194 is in circuit communication with an auto incrementor 216, an auto decrementor 218, and a polling function. The incrementor 216 serves to automatically increment an address present in the Address port register 208. The decrementor 218 serves to automatically decrement an address present in the Address port register 208. The polling function serves to reload the Address port register 208 with the same address. The present invention allows a number of enhanced programming methods which permit input and output operations to be implemented with fewer program code instructions. One of the programming methods disclosed by the present invention is an enhanced method of 'polling' a device's internal register by accessing the polling function.