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:
Oct. 25, 1983
Filed:
May. 30, 1980
Yeshayahu Mor, Santa Clara, CA (US);
Dan Wilnai, Sunnyvale, CA (US);
Fairchild Camera & Instrument Corp., Mountain View, CA (US);
Abstract
A microprocessor comprising: an address data path; an arithmetic logic unit data path, said data paths being capable of simultaneous operation; an information bus; a shared bus register; a shared input multiplexing apparatus for selectively transferring address and data information from said information bus and data information from said arithmetic logic unit data path to said shared bus register; and a multiplexing apparatus for transferring information from said shared bus register to said arithmetic logic unit data path and to said information bus via said address data path whereby said shared bus register is selectively useable as a memory data register, a memory address register and a temporary or 'scratch-pad' register during normal operation of the microprocessor; and further comprising; a programmable logic array containing a sequence of microinstructions and apparatus connected thereto for testing the operability of the microprocessor.