For example, in a CISC the complexity of a multiplication instruction is located in a very extensive microcode which controls the ALU. For a RISC CPU the chip designers put the complexity in a complicated hardware multiplier. Typically, in a CISC CPU multiplications are carried out by many addi...
RISC vs CISC is a topic quite popular on the Net. Everytime Intel (CISC) or Apple (RISC) introduces a new CPU, the topic pops up again. But what are CISC and RISC exactly, and is one of them really better? This article tries to explain in simple terms what RISC and CISC are and...
Let’s also look at the figure below to understand the difference between the RISC and CISC. It’s an example of multiplying two numbers in the memory: In the CISC approach, as we see in the figure, there is only one complex instruction “MULT”.It takes care of everything. It works...
,分别是CISC指令集和RISC指令集。 1、CISC指令集CISC指令集,也称为复杂指令集,英文名是CISC,(ComplexInstructionSetComputer的缩写)。在CISC...;ReducedInstructionSetComputing ”的缩写,中文意思是“精简指令集”。它是在CISC指令系统基础上发展起来的,相对于CISC型 ...
An example of CISC is x86 and x86-64 from Intel and AMD. We’ll leave the explanation about their history for another article but all you need to know is, that x86 and x86-64 processors require more power, and aren’t as efficient as RISC ISA, but are quite powerful. Although the ...
Since RISC has a reduced instruction set, it is efficient when performing common, less intensive tasks that most smartphones, tablets and even laptops require, however they are not so efficient when performing intensive tasks that CISC architecture based processors usually do. An example of the ...
CISC(复杂指令集)与RISC(精简指令集)的区别 复杂指令集计算机(CISC) Complex Instruction SetComputer 长期来,计算机性能的提高往往是通过增加硬件的复杂性来获得.随着集成电路技术.特别是VLSI(超大规模集成电路)技术的迅速发展,为了软件编程方便和提高程序的运行速度,硬件工程师采用的办法是不断增加可实现复杂功能的指令...
基于CISC/RISC的混合指令集构建 陈瑞森 (1.厦门海洋职业技术学院福建厦门361012;2.厦门大学物理系EDA实验室福建厦 门361005) 摘要:CISC与RISC是微处理器设计中的2种主要指令体系,4~4rl各具优势,共存 共融是其发展方向之一.首先介绍 了硬件上基于CISC/RISC的混合架构设计,然后重点具体介绍CISC/RISC混合指 令集的...
摘要: 近来出现的基于PowerPC的电脑作为强有力的竞争者给受Intel控制的市场又助燃了大辩论之火.哪一个更好些:RISC(精减指令集计算)还是CISC(复杂指令集计算)?RISC的支持者坚决主张他们的芯片比CISC芯片运作得更快,并且总的来说效能更高些,但Intel和其它一些CISC支持者则强硬地坚持相反的意见.关键词:...
(CISC) 精简指令集计算机:Reduced Instruction Set Computer (RISC) 美国加州大学伯克利分校的第五代精简指令集架构:RISC-V 集成电路/芯片:Integrated Circuit (IC) / Chip 芯片设计:IC design / Chip design,本文所提到的芯片设计有时专指设计、有时则包含设计与验证 芯 芯片验证:IC...