Data processing unit with pipelined operands
    1.
    发明授权
    Data processing unit with pipelined operands 失效
    具有流水线操作数的数据处理单元

    公开(公告)号:US4454578A

    公开(公告)日:1984-06-12

    申请号:US265168

    申请日:1981-05-19

    摘要: A data processing unit for executing variable length instructions in which operand specifiers for specifying addressing modes of operands are independent from operation codes for ascertaining operations is disclosed. An instruction fetch unit includes an instruction buffer for prefetching and retaining instructions from a memory and alignment means for aligning the instructions from the instruction buffer such that the instruction includes at least one operand specifier in one machine cycle, and provides it to a decoding unit. The decoding unit includes an operation code decoder and two operand specifier decoders to decode two operand specifiers simultaneously when the last operand specifier is a register designation mode. Each of the units executes instructions in a pipelined fashion and processes operands in a pipelined fashion.

    摘要翻译: 一种用于执行可变长度指令的数据处理单元,其中用于指定操作数的寻址模式的操作数说明符与用于确定操作的操作代码无关。 指令提取单元包括用于从存储器预取和保存指令的指令缓冲器以及用于对准来自指令缓冲器的指令的对准装置,使得指令在一个机器周期中包括至少一个操作数说明符,并将其提供给解码单元。 解码单元包括操作码解码器和两个操作数说明符解码器,以在最后一个操作数说明符是寄存器指定模式时同时解码两个操作数说明符。 每个单元以流水线方式执行指令,并以流水线方式处理操作数。

    Information processing apparatus having micro instructions stored both
in on-chip ROM and off-chip memory
    6.
    发明授权
    Information processing apparatus having micro instructions stored both in on-chip ROM and off-chip memory 失效
    具有存储在片上ROM和片外存储器中的微指令的信息处理装置

    公开(公告)号:US5274829A

    公开(公告)日:1993-12-28

    申请号:US114720

    申请日:1987-10-28

    CPC分类号: G06F9/268 G06F9/26 G06F9/328

    摘要: A data processing apparatus which allows a large number of micro instructions to be read at high speeds by storing frequently used micro instructions in the on-chip ROM and those less frequently used in the off-chip memory. From the address of the micro instruction to be accessed, it is determined whether the micro instruction is stored in the on-chip ROM or the off-chip memory, and the micro instruction is accessed on the basis of this determination. A cache memory may also be provided on the chip for providing high speed repeat access to micro instructions stored in the off-chip memory.

    摘要翻译: 一种数据处理装置,其通过将经常使用的微指令存储在片上ROM中以及在片外存储器中较少使用的微指令,允许以高速读取大量微指令。 根据要访问的微指令的地址,确定微指令是存储在片上ROM还是片外存储器中,并且基于该确定来访问微指令。 还可以在芯片上提供高速缓冲存储器,以提供对存储在片外存储器中的微指令的高速重复访问。

    Data processing unit with pipelined operands
    9.
    再颁专利
    Data processing unit with pipelined operands 失效
    具有流水线操作数的数据处理单元

    公开(公告)号:USRE32493E

    公开(公告)日:1987-09-01

    申请号:US873174

    申请日:1986-06-11

    IPC分类号: G06F9/30 G06F9/318 G06F9/38

    摘要: A data processing unit for executing variable length instructions in which operand specifiers for specifying addressing modes of operands are independent from operation codes for ascertaining operations is disclosed. An instruction fetch unit includes an instruction buffer for prefetching and retaining instructions from a memory and alignment means for aligning the instructions from the instruction buffer such that the instruction includes at least one operand specifier in one machine cycle, and provides it to a decoding unit. The decoding unit includes an operation code decoder and two operand specifier decoders to decode two operand specifiers simultaneously when the last operand specifier is a register designation mode. Each of the units executes instructions in a pipelined fashion and processes operands in a pipelined fashion.

    Multi-computer system having dual common memory
    10.
    发明授权
    Multi-computer system having dual common memory 失效
    具有双通用存储器的多计算机系统

    公开(公告)号:US4486834A

    公开(公告)日:1984-12-04

    申请号:US485020

    申请日:1983-04-14

    摘要: A multi-computer system having a dual common memory adapted to perform Read/Write operations by means of a plurality of computers. Each computer in the system consists of a central processing unit, a main memory and a dual memory access unit. The dual memory access unit is adapted to provide a status signal representative of whether the data from the common memory is correct or not and a maintenance signal representative of whether a maintenance operation is demanded. A memory access is made only to the common memory demanding the maintenance when the program run by the computer is a maintenance program, and only to the normal common memory during the usual operation.

    摘要翻译: 一种具有适于通过多个计算机执行读/写操作的双公共存储器的多计算机系统。 系统中的每台计算机都由中央处理单元,主存储器和双存储器存取单元组成。 双存储器访问单元适于提供表示来自公共存储器的数据是否正确的状态信号,以及表示是否需要维护操作的维护信号。 只有当计算机运行的程序是维护程序时才需要进行维护的公共存储器的存储器访问,并且在正常操作期间仅对正常的公共存储器进行存储器访问。