>>>>>型號:8421-CC-PS 處理器
【功能描述】
8421-CC-PS插件 主板 處理器
CPU包括運(yùn)算邏輯部件、寄存器部件，運(yùn)算器和控制部件等。
折疊運(yùn)算邏輯部件
運(yùn)算邏輯部件，可以執(zhí)行定點(diǎn)或浮點(diǎn)算術(shù)運(yùn)算操作、移位操作以及邏輯操作，也可執(zhí)行地址運(yùn)算和轉(zhuǎn)換。
折疊寄存器部件
寄存器部件，包括通用寄存器、專用寄存器和控制寄存器。
通用寄存器又可分定點(diǎn)數(shù)和浮點(diǎn)數(shù)兩類，它們用來保存指令中的寄存器操作數(shù)和操作結(jié)果。
通用寄存器是中央處理器的重要組成部分，大多數(shù)指令都要訪問到通用寄存器。通用寄存器的寬度決定計算機(jī)內(nèi)部的數(shù)據(jù)通路寬度，其端口數(shù)目往往可影響內(nèi)部操作的并行性。
專用寄存器是為了執(zhí)行一些特殊操作所需用的寄存器。
控制寄存器通常用來指示機(jī)器執(zhí)行的狀態(tài)，或者保持某些指針，有處理狀態(tài)寄存器、地址轉(zhuǎn)換目錄的基地址寄存器、特權(quán)狀態(tài)寄存器、條件碼寄存器、處理異常事故寄存器以及檢錯寄存器等。
有的時候，中央處理器中還有一些緩存，用來暫時存放一些數(shù)據(jù)指令，緩存越大，說明CPU的運(yùn)算速度越快，目前市場上的中高端中央處理器都有2M左右的二級緩存，高端中央處理器有4M左右的二級緩存。
>>>>>型號:8421-CC-PS 處理器
【英文介紹】
8421-CC-PS plug-in motherboard processor
CPU includes arithmetic logic component, register component, arithmetic unit and control component.
Folding operation logic unit
An operational logic unit that can perform fixed-point or floating-point arithmetic operations, shift operations, and logical operations, as well as address operations and conversions.
Folding register unit
A register component includes a general purpose register, a special purpose register and a control register.
General purpose registers can be divided into fixed-point numbers and floating-point numbers, which are used to store register operands and operation results in instructions.
The general purpose register is an important part of the central processing unit (CPU), and most instructions need to access the general purpose register. The width of the general purpose
register determines the width of the data path inside the computer, and the number of its ports often affects the parallelism of the internal operation.
A special register is a register that is needed to perform some special operations.
Control registers are usually used to indicate the state of the machine's execution, or to hold some Pointers, including processing state registers, address translation directory base registers,
privileged state registers, condition code registers, processing exception registers, and error detection registers.
Sometimes, there are some caches in the central processor, used to temporarily store some data instructions, the larger the cache, the faster the CPU operation speed, the current market of
high-end central processors have about 2M of the second-level cache, high-end central processor has about 4M of the second-level cache.
>>>>>型號:8421-CC-PS 處理器
