[TUHS] Encoding an ISA: Random Logic vs. Control Stores
Ralph Corderoy
ralph at inputplus.co.uk
Wed Dec 1 01:39:54 AEST 2021
Hi Arnold,
> Can someone please explain why it's called "random" logic? Discrete
> logic I understand (more or less), but I've not heard the term
> "random" used in this context before now.
I'm more used to ‘hard-wired’ logic versus ‘micro-programmed’ for
microcode but random logic in a known term in this context:
https://en.wikipedia.org/wiki/Random_logic
Random logic is a semiconductor circuit design technique that
translates high-level logic descriptions directly into hardware
features such as AND and OR gates. The name derives from the fact
that few easily discernible patterns are evident in the arrangement
of features on the chip and in the interconnects between them.
--
Cheers, Ralph.
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