[A83] Re: microcode

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[A83] Re: microcode


If I was to get a new computer, I would not want an updgradeable microcode 
CPU, because it is possible (unlikely but possible) that some hacker would 
give me an unsoliceted update. So far, I have got 3 viruses over cable in 
less than a month (my first month), and they are all internet worms, not 
trojans!

Virus-prone novice assembly programmer,
       Jimmy Pardey


>From: james@kirk.math.twsu.edu
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>Subject: [A83] Re: microcode
>Date: Mon, 17 Sep 2001 20:11:13 -0500 (CDT)
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> > There processors that allow you to update the microcode.  I believe the
> > Pentium III Xeon is one such CPU.  I remember seeing stuff for Linux
> > relating to that, although I can't remember exactly what.
> >
>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.
>
>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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