SPARC Context Id?

[Weihan Wang <w23wang@uwaterloo.ca>]

Hi All,

I'm a newbie for SPARC. I'm not sure the purpose of the 13-bit context 
identifier in SPARC translation table entries. I searched through the 
SPARC architecture manual and the web but found no enough details 
regarding this identifier.

PS: is there any other SPARC reference we (OS developers) can count on 
beyond that architecture manual?

Thanks in advance!

Weihan