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Hardware: RISC vs. CISC

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There are no pure RISC CPU's anymore, at least not by the original definition. Further, CISC has borrowed many of the RISC ideas and techniques.
The primary goal of CISC architecture is to complete a task in as few lines of assembly as possible. This is achieved by building processor hardware that is capable of understanding and executing a series of operations. For this particular task, a CISC processor would come prepared with a specific instruction (we'll call it "MULT"). When executed, this instruction loads the two values into separate registers, multiplies the operands in the execution unit, and then stores the product in the appropriate register. Thus, the entire task of multiplying two numbers can be completed with one instruction:
 read more | mail this link | score:7628 | -Ray, November 26, 2002 (Updated: June 14, 2003)
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