公开(公告)号：US3786434A

公开(公告)日：1974-01-15

申请号：US3786434D

申请日：1972-12-20

Applicant: IBM

Inventor： FRYE H ,  MC MAHON R

IPC: G06F9/26 ,  G06F9/16 ,  G06F9/00

CPC classification number: G06F9/267

Abstract: A microprogrammed control unit comprising an instruction memory for storing microinstructions with no repetitions and an address memory for storing the addresses of microinstructions which make up a microprogram. Within the instruction memory, micro-orders are densely stored. Each time that a word is accessed from the instruction storage, a mask which is stored along with the address in the address storage is utilized to select appropriate micro-orders to produce a desired microinstruction. Through the use of the mask, and associated gates, each word in the instruction storage is capable of supplying a plurality of microinstructions to the system.

Abstract translation: 一种微程序控制单元，包括用于存储不重复的微指令的指令存储器和用于存储构成微程序的微指令的地址的地址存储器。 在指令存储器中，微订单密集存储。 每当从指令存储器访问单词时，利用与地址存储器中的地址一起存储的掩码来选择合适的微命令以产生所需的微指令。 通过使用掩模和相关联的门，指令存储器中的每个字能够向系统提供多个微指令。

公开(公告)号：SE300896B

公开(公告)日：1968-05-13

申请号：SE1039166

申请日：1966-07-29

Applicant: IBM

Inventor： MC MAHON R

IPC: G06F12/04