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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 ]
ARM11 is a group of 32-bit RISC ARM processor cores licensed by ARM Holdings. [1] The ARM11 core family consists of ARM1136J(F)-S, ARM1156T2(F)-S, ARM1176JZ(F)-S, and ARM11MPCore. Since ARM11 cores were released from 2002 to 2005 , they are no longer recommended for new IC designs, instead ARM Cortex-A and ARM Cortex-R cores are preferred.
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.
Thumb-1, Thumb-2, Saturated (some) The STM32 L1-series was the first group of STM32 microcontrollers with a primary goal of ultra-low power usage for battery-powered applications.
The ARM Cortex-A7 MPCore is a 32-bit microprocessor core licensed by ... NEON SIMD instruction set extension; VFPv4 Floating Point Unit; Thumb-2 instruction set encoding;
It was written by Steve Furber, who co-designed the ARM processor with Sophie Wilson. [2] The book's content covers the architecture, assembly language programming, support mechanisms for high-level programming languages, the instruction set and the building of operating systems. The Thumb instruction set is also covered in detail. [3]