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A comment on An introduction to reverse-engineering x86 microcode and writing it. Parent comment

Re:An introduction to reverse-engineering x86 microcode and ... by sannee on Friday December 29, 2017 @06:37AM (#16028967)
I don't think that tri-state logic is used in ICs anymore (?).

EDIT: http://vswww.kaist.ac.kr/ENGLISH/old_lecture/ee878-2002/lect...

It probably does not imply that the chip is indestructible through microcode though.

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Re:An introduction to reverse-engineering x86 microcode and ... by marcosdumay on Friday December 29, 2017 @10:47AM (#16029991)
That paper is about a different concept only loosely related to what DavidBuchanan seems to be talking about.

Selecting a register through a tri-state based bus demands a circuit with a O(1) critical path. Selecting a register through a logical selector demands a circuit with O(log n) critical path, and a large constant factor.

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Re:An introduction to reverse-engineering x86 microcode and ... by DavidBuchanan on Friday December 29, 2017 @06:45AM (#16028997)
How do busses work without tri-state logic?
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Re:An introduction to reverse-engineering x86 microcode and ... by vanjoe on Friday December 29, 2017 @10:49AM (#16030010)
Arbitration and multiplexing
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