[A83] Re: microcode


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[A83] Re: microcode





>All of the P6 family can have upgraded microcode (PPro, P2, P3, celeron). 
>Intel decided that it didn't want to have another f00f bug requre the 
>remaking of thousands (maybe millions) of CPUs. I think that (no knowing 
>for sure) that the K6 and above from amd can, as well as the p4. I don't 
>believe that alphas can nor sparcs, m68ks, can have the microcode upgraded. 
>Z80s certainly can't becuase they were before the time of microcode, and 
>have all instructions 'hardwired' into the chip.

But there is no way to "call" such a microcode instruction on the z80?
Just like any other assembly instruction. If we could make programs
in microcode it would be faster then assembly, like this:
BASIC>ASSEMBLY>MICROCODE

     SUCKER

>
>James L.
>
>PS The only ones I am sure about are the intel ones, and the z80, so if I 
>am wrong please correct me. Of course if people bothered to check the 
>processors before they shipped and not cover up problems...
>
>


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