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. 09, 1999
Filed:
Oct. 08, 1996
Simon James Glass, Cherry Hinton, GB;
David Vivian Jaggar, Cherry Hinton, GB;
ARM Limited, Cambridge, GB;
Abstract
A data processing system having a plurality of registers 10 and an arithmetic logic unit 20, 22, 24 includes program instruction words having a source register bit field Sn specifying one of the registers storing an input operand data word together with an input operand size flag indicating whether the input operand has an N-bit size or (N/2)-bit size together with a high/low location flag indicating which of the high order bit positions or low order bit positions stores the input operand if it is of the smaller size. It is preferred that the arithmetic logic unit is also able to perform parallel operation program instruction words operating independently upon (N/2)-bit input operand data words stored in respective halves of a register.