Wilko Bulte writes:
 > 
 > What is a slot B ? The 21264 I have see had (big..) PGA enclosures.

Slot B is the AMD-K7 / 21264 common interface used by the UP1000,
UP1100 and UP2000.

Take a look at
http://www.alpha-processor.com/technical/downloads/drivers/up1000_quick_start.pdf 
for a good picture of what it looks like.


Cheers,

Drew
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Andrew Gallatin, Sr Systems Programmer	http://www.cs.duke.edu/~gallatin
Duke University				Email: gallatin@cs.duke.edu
Department of Computer Science		Phone: (919) 660-6590