microinstruction


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mi·cro·in·struc·tion

 (mī′krō-ĭn-strŭk′shən)
n. Computers
A small, basic instruction, used in series to make up a high-level machine instruction.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

microinstruction

(ˈmaɪkrəʊɪnˌstrʌkʃən)
n
(Computer Science) computing an instruction produced within an arithmetic and logic unit in accordance with a microprogram, that activates a particular circuit to perform part of the operation specified by a machine instruction
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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Keywords: Digital Systems, Microinstruction (MI), Synchronized Systems, Combined Addressing, Throughput.
The Combined addressing of Microinstructions is used in Micro-Programmed logic devices because it is a convenient and easy way of writing the MicroPrograms as well as the small size of the microinstruction [6, 9, 10].
As you can see from the comments to the right of each microinstruction, the Little Man idea is maintained.
[1992] another approach for more accurate timing is proposed; the resulting tool was able to analyze microinstruction streams using machine description rules, and thus it was retargetable to various architectures.
The latter represents a sequence of parallel microinstructions with separate fields for each FU.
Microcode requires a two-level decode [19] (instructions need to be decoded into microinstructions, and then decoded and executed), and microcoded machines tend to be slower than hardwired ones.