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:
Dec. 20, 2005
Filed:
Apr. 02, 2002
Hedley James Francis, Newmarket, GB;
Hedley James Francis, Newmarket, GB;
ARM Limited, Cambridge, GB;
Abstract
A data processor comprises a register bank containing a plurality of 'n' bit registers for storing data items, a set of registers within the register bank being allocatable to hold stack data items from a portion of the stack, and each register in the set storing as an n-bit value stack data items of the first or second type. An arithmetic logic unit executes operations upon data items held in the registers and a decoder decodes a stack-based instruction to specify a number of operations to be executed by the arithmetic logic unit upon one or more stack data items held in predetermined registers in the set. Further, a stack controller is arranged to control movement of stack data items between the stack and the set of registers, and is responsive to the decoder causing one or more stack data items to be held in the predetermined registers.