Re: Linux Kernel Microcode Question

[Timothy Miller]

Richard B. Johnson wrote:

> ALL instructions are performed by the microcode. 

The Z80 had no microcode.  It was completely hard-wired.

As I understand it, it's pretty much an ancient idea to do "everything" 
by microcode.  Only certain very complex instructions are done by microcode.

On the other hand, as I said before, it's not unreasonable for lookup 
tables to be involved in instruction decoding.

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