26-03-2012, 02:50 PM
ARM PROCESSOR full report
The ARM is a 32-bit reduced instruction set computer (RISC) instruction set architecture (ISA) developed by ARM Holdings. It was known as the Advanced RISC Machine, and before that as the Acorn RISC Machine. The ARM architecture is the most widely used 32-bit ISA in terms of numbers produced. .
A processor architecture initially developed by Advanced RISC Machines, Ltd, and used extensively today in consumer electronic devices such as mobile phones, multimedia players, pocket calculators and personal digital assistants. ..
The brains of the iPhone. Also known as the Advanced RISC Machine processor, ARM was used in the Newton, as well as in the Game Boy Advance, mobile phones from Sony Ericsson, Nokia phones such as the N95, and most recently, the iPhone
ADVATAGES
Besides performance improvement, some advantages of RISC and related design improvements are:
• A new microprocessor can be developed and tested more quickly if one of its aims is to be less complicated.
• Operating system and application programmers who use the microprocessor's instructions will find it easier to develop code with a smaller instruction set.
• The simplicity of RISC allows more freedom to choose how to use the space on a microprocessor.
• Higher-level language compilers produce more efficient code than formerly because they have always tended to use the smaller set of instructions to be found in a RISC computer.
PIPELINING
In computers, a pipeline is the continuous and somewhat overlapped movement ofinstruction to the processor or in the arithmetic steps taken by the processor to perform an instruction. Pipelining is the use of a pipeline. Without a pipeline, a computer processor gets the first instruction from memory, performs the operation it calls for, and then goes to get the next instruction from memory, and so forth. While fetching (getting) the instruction, the arithmetic part of the processor is idle. It must wait until it gets the
next instruction. With pipelining, the computer architecture allows the next instructions to be fetched while the processor is performing arithmetic operations, holding them in a buffer close to the processor until each instruction operation can be performed. The staging of instruction fetching is continuous. The result is an increase in the number of instructions that can be performed during a given time period.
Pipelining is sometimes compared to a manufacturing assembly line in which different parts of a product are being assembled at the same time although ultimately there may be some parts that have to be assembled before others are. Even if there is some sequential dependency, the overall process can take advantage of those operations that can proceed concurrently. Computer processor pipelining is sometimes divided into an instruction pipeline and an arithmetic pipeline. The instruction pipeline represents the stages in which an instruction is moved through the processor, including its being fetched, perhaps buffered, and then executed. The arithmetic pipeline represents the parts of an arithmetic operation that can be broken down and overlapped as they are performed.
The ARM is a 32-bit reduced instruction set computer (RISC) instruction set architecture (ISA) developed by ARM Holdings. It was known as the Advanced RISC Machine, and before that as the Acorn RISC Machine. The ARM architecture is the most widely used 32-bit ISA in terms of numbers produced. .
A processor architecture initially developed by Advanced RISC Machines, Ltd, and used extensively today in consumer electronic devices such as mobile phones, multimedia players, pocket calculators and personal digital assistants. ..
The brains of the iPhone. Also known as the Advanced RISC Machine processor, ARM was used in the Newton, as well as in the Game Boy Advance, mobile phones from Sony Ericsson, Nokia phones such as the N95, and most recently, the iPhone
ADVATAGES
Besides performance improvement, some advantages of RISC and related design improvements are:
• A new microprocessor can be developed and tested more quickly if one of its aims is to be less complicated.
• Operating system and application programmers who use the microprocessor's instructions will find it easier to develop code with a smaller instruction set.
• The simplicity of RISC allows more freedom to choose how to use the space on a microprocessor.
• Higher-level language compilers produce more efficient code than formerly because they have always tended to use the smaller set of instructions to be found in a RISC computer.
PIPELINING
In computers, a pipeline is the continuous and somewhat overlapped movement ofinstruction to the processor or in the arithmetic steps taken by the processor to perform an instruction. Pipelining is the use of a pipeline. Without a pipeline, a computer processor gets the first instruction from memory, performs the operation it calls for, and then goes to get the next instruction from memory, and so forth. While fetching (getting) the instruction, the arithmetic part of the processor is idle. It must wait until it gets the
next instruction. With pipelining, the computer architecture allows the next instructions to be fetched while the processor is performing arithmetic operations, holding them in a buffer close to the processor until each instruction operation can be performed. The staging of instruction fetching is continuous. The result is an increase in the number of instructions that can be performed during a given time period.
Pipelining is sometimes compared to a manufacturing assembly line in which different parts of a product are being assembled at the same time although ultimately there may be some parts that have to be assembled before others are. Even if there is some sequential dependency, the overall process can take advantage of those operations that can proceed concurrently. Computer processor pipelining is sometimes divided into an instruction pipeline and an arithmetic pipeline. The instruction pipeline represents the stages in which an instruction is moved through the processor, including its being fetched, perhaps buffered, and then executed. The arithmetic pipeline represents the parts of an arithmetic operation that can be broken down and overlapped as they are performed.