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:
Mar. 23, 1982
Filed:
Jan. 02, 1979
Richard T Flynn, Peoria, AZ (US);
Jerry L Kindell, Glendale, AZ (US);
Honeywell Information Systems Inc., Waltham, MA (US);
Abstract
A microprogrammed data processing system includes a cache memory, a decimal unit and an execution unit. The decimal unit receives operands from cache memory, strips the non-decimal digit information from the operands, and assembles the 4-bit decimal digits from the operand into words containing a maximum of 8 decimal digits for transfer to the execution unit. The execution unit processes the words in accordance with a decimal numeric instruction. The throughput of the system is increased when processing short operands which contain 15 decimal digits or less by apparatus in the decimal unit which detects the short operand and determines the number of cache memory cycles between the cycle the first word of the short operand is received from cache memory and the cycle on which the first assembled word is transferred to the execution unit for processing.