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热词
    • 1. 发明授权
    • Microinstruction execution unit for use in a microprocessor
    • 用于微处理器的微指令执行单元
    • US4367524A
    • 1983-01-04
    • US119432
    • 1980-02-07
    • David L. BuddeStephen R. ColleyStephen L. DomenikAllan L. GoodmanJames D. Howard
    • David L. BuddeStephen R. ColleyStephen L. DomenikAllan L. GoodmanJames D. Howard
    • G06F9/22G06F9/28G06F9/38G06F9/455G06F9/00G06F7/00
    • G06F9/226G06F9/3824
    • An execution unit which is part of a general-purpose microprocessor, partitioned between two integrated circuit chips, with the execution unit on one chip and an instruction unit on another chip. The execution unit provides the interface for accessing a main memory to thereby fetch data and macroinstructions for transfer to the instruction unit when requested to do so by the instruction unit. The execution unit receives arithmetic microinstructions in order to perform various arithmetic operations, and receives access-memory microinstructions in order to develop memory references from logical addresses received from the instruction unit. Arithmetic operations are performed by a data manipulation unit which contains registers and arithmetic capability, controlled by a math sequencer. Memory references are performed by a reference-generation unit which contains base-and-length registers and an arithmetic capability to generate and check addresses for referencing an off-chip main memory, and is controlled by an access sequencer.
    • 作为通用微处理器的一部分的执行单元,分配在两个集成电路芯片之间,执行单元在一个芯片上,另一个芯片上的指令单元。 执行单元提供用于访问主存储器的接口,从而当指令单元请求时,提取用于传送到指令单元的数据和宏指令。 执行单元接收算术微指令以执行各种算术运算,并且接收访问存储器微指令以便从从指令单元接收的逻辑地址开发存储器引用。 算术运算由包含由数学定序器控制的寄存器和算术能力的数据操作单元执行。 存储器引用由包含基址和长度寄存器的参考生成单元以及用于生成和检查用于引用片外主存储器的地址的算术能力执行,并且由访问定序器控制。