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:
Jul. 16, 1985
Filed:
Apr. 14, 1983
Applicant:
Inventors:
Thomas A Kriz, Sandy Hook, CT (US);
Andrew S Potemski, New Milford, CT (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364200 ;
Abstract
Circuitry is provided to be used in association with a single transfer mode DMAC device to enable a programmer to control the number of bytes transferred during a DMA transfer cycle. The circuitry receives a coded mode control message from the microprocessor before transferring control of the data and address busses to the DMAC and generates one or both of two data transfer strobe signals which instruct the memory to transfer contiguous bytes, contiguous high alternate order bytes, or contiguous low alternate order bytes, or both.