[SunRescue] Ultrasparc CPU dismantling

[Learath]

At 07:44 PM 11/1/99 -0800, you wrote:

>> -----Original Message-----
>> From: Chris Kozlowski [mailto:razer at ultra.darkcartel.com]
>> Sent: Monday, November 01, 1999 7:31 PM
>> To: rescue at sunhelp.org
>I don't suppose you could take a quick snapshot of that thing for those of
>us who don't have Ultras, could ya?  I'd love to see where all of the traces
>and resistors are going.  
>On a similar note, I've determined that the "clock-locking" done on Intel
>P-II and P-III CPUs is part of the cartridge, and not part of anything else
>(like a prom).  I would guess that Sun has done the same thing, although
>it's not as big a deal for them, because they don't have to worry about
>people "stealing" clock cycles from their CPUs as Intel does.
>	Greg
>> 
>> Just food for thought and you electrical engineers out
>> there ;-)
>> 
>> Chris
Actually intel did something really cute with P-II/P-III's.  They took a
worm(Write Once Read Many) chip of some form, burned in a mask to allow
through and all other combinations were locked out.  With the ultrasparc
it is much more likley that it's just simple jumpers or jumper equivilents
on the module setting the mulitplier and possibly clock.  It should not be
terribly difficult to fake, but i'm not sure it'd be worth it.
	Nick