Self modifying code, lambda calculus - Re: ENIAC programming

[Jon Elson]

On 09/17/2015 11:19 PM, Guy Sotomayor wrote:
>
>
> On 9/17/15 8:55 PM, Jon Elson wrote:
>>
>> I think the later X86 machines have a tiny block of patch 
>> microcode that is available to the OS to put special 
>> routines into.
>>
> Certainly not Intel CPUs.  All of the microcode patches 
> are loaded via special instruction sequences
> (described in the SDM).  The microcode patch RAM is in the 
> CPU and not visible to S/W.
>
OK, thanks, I knew there was this patch RAM, but didn't know 
the purpose.

Jon