TI99: WP and PC

From: Jay West <jlwest_at_tseinc.com>
Date: Fri Jan 29 22:53:09 1999

You wrote...
>> WP... workspace pointer. back when the 9900 was new registers (memory)
>> really ate up chip space and TI had an archetecture in the 990
minicomputer
>> where register were in memory instead of in the CPU. So the WP is a
pointer
>> that points to a block of 16 locations in ram that are addressed in
>> instructions as R0 through R15.
>
>Wow! What a cool architecture! That would be a very handy feature to
>have in any processor.


Wouldn't that be an awfully handy feature for doing a context switch? It
would seem simply adjusting WP would perform the appropriate "change of
personality" to select the next user/process...

Jay
Received on Fri Jan 29 1999 - 22:53:09 GMT