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    • 2. 发明申请
    • MICROPROGRAM CONTROLLER
    • 微控制器
    • WO1986005015A1
    • 1986-08-28
    • PCT/AU1986000041
    • 1986-02-19
    • MAGELLAN CORPORATION (AUSTRALIA) PTY. LTD.BROOKS, David, R.O'SULLIVAN, Daniel, S.
    • MAGELLAN CORPORATION (AUSTRALIA) PTY. LTD.
    • G06F09/22
    • G06F9/267
    • A microprogram controller having a memory to store instructions at specified addresses, a register (R) to hold a current instruction including the address in the memory of the following instruction, an arithmetic logic unit (ALU) to execute the current instruction and thereby manipulating external data as well as altering the choice of following instruction wherein the memory is divided into two banks (A, B) and the output (each said output being a possible following instruction) of each memory bank is presented to a first multiplexer (M1) which is connected to the register (R), and providing a second multiplexer (M2) to simultaneously with the execution of the current instruction receive as input any number of various conditions (including ''1'' and ''0'') one at a time, developed by the arithmetic logic unit (ALU) and to develop a binary output to determine which of the following instructions at the first multiplexer (M1) is loaded into the register (R) to be next executed. The majority of conditional jump functions are, in fact, two-way decisions, i.e. IF (something) THEN DO (this) OTHERWISE DO (that). The new architecture is designed to optimise this type of decision. A LITERAL register is added to enable the microprogram to supply literal values to the arithmetic logic unit (ALU) at certain times.
    • 一种微程序控制器,具有存储器,用于存储在指定地址处的指令;存储器(R),用于保持包括在随后指令的存储器中的地址的当前指令;算术逻辑单元(ALU),用于执行当前指令,从而操纵外部 数据以及改变后续指令的选择,其中存储器被划分成两个存储体(A,B),并且每个存储体的输出(每个所述输出是可能的后续指令)被呈现给第一复用器(M1),第一多路复用器 连接到寄存器(R),并且提供第二多路复用器(M2)以同时执行当前指令接收作为输入的任何数量的各种条件(包括“1”和“0”)一个在 一个由算术逻辑单元(ALU)开发的时间,并且开发二进制输出以确定在第一多路复用器(M1)中哪一个后续指令被加载到下一个执行的寄存器(R)中。 事实上,大多数条件跳转功能是双向决策,即IF(某事),因此(此)除此之外。 新架构旨在优化这种类型的决策。 添加LITERAL寄存器以使微程序在特定时间向算术逻辑单元(ALU)提供字面值。