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1. 发明授权

US4231089A Data processing system with apparatus for correcting microinstruction errors 失效
标题翻译：具有用于校正微指令误差的装置的数据处理系统
公开(公告)号：US4231089A
公开(公告)日：1980-10-28
申请号：US969956
申请日：1978-12-15
申请人： Donald A. Lewine , Thomas M. Dundon , Ronald J. Setera
发明人： Donald A. Lewine , Thomas M. Dundon , Ronald J. Setera
IPC分类号： G06F11/10 , G06F11/14 , G06F11/16
CPC分类号： G06F11/1008 , G06F11/1076 , G06F11/141
摘要： In a data processing system, a method and apparatus which enable an erroneous microinstruction word to be rewritten before it is executed. After the microinstruction word is written from memory into a control register, a parity network coupled to the control register determines whether a correct microinstruction is being executed. Upon a parity error being detected, the clock pulses to the data paths coupled to the control register are inhibited. The original microinstruction word is then fetched from secondary storage and rewritten into the microinstruction memory with the aid of a separate register providing the address to the microinstruction memory. Upon rewriting the microinstruction memory, the signal inhibiting the clock pulses is removed thereby allowing a new microinstruction to be executed. An additional feature includes apparatus for determining whether an error has previously occurred for the same microinstruction word, in which case a critical fault occurs and remedial maintenance is necessary.
摘要翻译：在数据处理系统中，能够在执行错误的微指令词之前重写该方法和装置。在微指令字从存储器写入控制寄存器之后，耦合到控制寄存器的奇偶校验网络确定是否正在执行正确的微指令。在检测到奇偶校验错误时，禁止连接到控制寄存器的数据通路的时钟脉冲。然后从辅助存储器取出原始微指令字，借助于向微指令存储器提供地址的单独寄存器将其重新写入微指令存储器。在重写微指令存储器时，消除了抑制时钟脉冲的信号，从而允许执行新的微指令。附加特征包括用于确定是否先前针对相同的微指令词发生错误的装置，在这种情况下发生严重故障并且需要补救维护。

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