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:
Sep. 15, 1981
Filed:
Jun. 27, 1979
Robert D Catiller, Garden Grove, CA (US);
Brian K Forbes, Huntington Beach, CA (US);
Burroughs Corporation, Detroit, MI (US);
Abstract
A microprocessor system having control lines and bus connections to an application dependent logic module having control logic, external registers and external memory for data transfers to/from a specific type of peripheral device. Addressing means are provided in said microprocessor whereby a program counter is used to address program memory and a memory reference register is used to provide addresses for access to external memory, and said memory reference register includes a low order bit field which selects whether the program counter or the memory reference register will be the address source for memory accesses.