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Thumb-2 extends the limited 16-bit instruction set of Thumb with additional 32-bit instructions to give the instruction set more breadth, thus producing a variable-length instruction set. A stated aim for Thumb-2 was to achieve code density similar to Thumb with performance similar to the ARM instruction set on 32-bit memory.
ARM licensed a number of Hitachi's patents on aspects of the instruction design and used them to implement their Thumb instructions. ARM processors with a "T" in the name included this instruction set in addition to their original 32-bit versions, and could be switched from 32- to 16-bit mode on the fly using the BX command. When in Thumb mode ...
This is a list of central processing units based on the ARM family of instruction sets designed by ARM Ltd. and third parties, sorted by version of the ARM instruction set, release and name. In 2005, ARM provided a summary of the numerous vendors who implement ARM cores in their design. [ 1 ]
This is a table of 64/32-bit central processing units that implement the ARMv8-A instruction set architecture and mandatory or optional extensions of it. Most chips support the 32-bit ARMv7-A for legacy applications.
Download as PDF; Printable version; ... ARM architecture (5 C, 40 P) I. Instruction set listings (8 P) M. ... Reduced instruction set computer;
The Jazelle instruction set is well documented as Java bytecode.However, ARM has not released details on the exact execution environment details; the documentation provided with Sun's HotSpot Java Virtual Machine goes as far as to state: "For the avoidance of doubt, distribution of products containing software code to exercise the BXJ instruction and enable the use of the ARM Jazelle ...
Download as PDF; Printable version; ... The ARM Cortex-A7 MPCore is a 32-bit microprocessor core licensed by ARM Holdings implementing ... Thumb-2 instruction set ...
An instruction set architecture (ISA) is an abstract model of a computer, also referred to as computer architecture.A realization of an ISA is called an implementation.An ISA permits multiple implementations that may vary in performance, physical size, and monetary cost (among other things); because the ISA serves as the interface between software and hardware.