On Fri, 19 Mar 2004, der Mouse wrote:
A KA620 is the same as a KA630 except that the P0 and
P1 page tables
are looked up in physical memory rather than system virtual memory.
Ahh, I've
heard of such a beast called rtVAX. It's mentioned in VARM
2nd ed. So rtVAX and KA620 are the same thing, right?
Possibly - or perhaps a KA620 is one example of an rtVAX, much as a
KA630 is an example of a VAX. I have never heard of an rtVAX except in
passing email references like this, so I cannot speak with any
authority to what such a thing is or isn't.
My VARM is "Revision 6.1" and is not obviously marked with an edition
number. I don't recall seeing an rtVAX mentioned in it, and the index
does not list anything beginning with rt-.
The 2nd Ed VARM has a section on rtVAX memory management, 11.2.3 on pgs
422-424. I don't yet see any other mentions of it the book to indicate
whether it actually is designated as the KA620.
-brian.