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Guy Harris (talk | contribs) →Intro and definition: Don't confuse x86-style micro-operations with traditional microcode. |
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{{diff2|1099255239|1099254707|Jul 19, 2022, 20:21}} - ''«Overview: add more sane definition of instructions microops»''<br/><br>
I've added a more sane definition to the overview along with a source. The intro one is too technical. <span style="font-weight: bold" >[[User:Alexander_Davronov|<span style="color:#a8a8a8;">AXO</span><span style="color:#000">NOV</span>]] [[User talk:Alexander_Davronov|(talk)]] [[Special:Contributions/Alexander_Davronov|⚑]]</span> 20:22, 19 July 2022 (UTC)
:[[Micro-operation]]s, in modern CISC processors such as [[P6 (microarchitecture)|P6]]-microarchitecture and later [[x86]] processors and at least some IBM [[System/390]] and [[z/Architecture]] microprocessors, are different from traditional microcode. Traditional microcode isn't generated on the fly from decoded instructions, but most micro-operations in modern processors are - some x86 microcode may consist of micro-ops stored on-chip, but I'm not sure whether modern IBM mainframe processors have any microcode such as that, instead relying on [[millicode]], which is composed of instructions from a subset of the S/390 or z/Architecture instruction set plus processor-specific extensions, to implement complex operations. [[User:Guy Harris|Guy Harris]] ([[User talk:Guy Harris|talk]]) 22:16, 19 July 2022 (UTC)
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