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:
Nov. 02, 1993
Filed:
Dec. 23, 1991
Hsiao-Peng S Lee, Sunnyvale, CA (US);
David Jarosh, Sunnyvale, CA (US);
Amdahl Corporation, Sunnyvale, CA (US);
Abstract
The times-two (.times.2) through times-nine (.times.9) multiples of a supplied multi-digit BCD number are produced using one machine cycle for performing a set-up operation and thereafter one additional machine cycle for producing all the .times.2-.times.9 multiples. A multiples generating circuit in accordance with the invention comprises: (a) an operand-storing register (OSR); (b) a multiple-storing register (MSR); (c) a multiplexer having a first input coupled to the output of the operand-storing register (OSR) and a second input coupled to the output of the multiple-storing register (MSR); (d) a .times.3 unit having an input coupled to the output of the multiplexer and an output coupled to the input of the MSR; (e) a first .times.2 unit having an input coupled to the output of the OSR; (f) a second .times.2 unit having an input coupled to the output of the first .times.2 unit; (g) a third .times.2 unit having an input coupled to the output of the second .times.2 unit; (h) a fourth .times.2 unit having an input coupled to the output of the MSR; (i) a .times.5 unit having an input coupled to the output of the OSR; and (j) a .times.7 unit having an input coupled to the output of the OSR.