Proposal  #2



Stack Groups on the Falcon.


	The hardware stack structure on the Falcon is different than that
on the lambda.  However, what the programmer wants to see (from the debugger, for
example) remains the same, a "stack machine".   This proposal details how we
reformat the various falcon stacks into stacks which look very much like the LAMBDA.

Doing it this way has several advantages and disadvantages.

advantages:
	economy of mechanism
	minimum of code that runs in "embarrising" circumstances
	closest to lambda

disadvantages:
	some loss of efficiency
	     normal stack group switch
	     catch and throw -- can be fixed by  "fast bypass" for simple cases.

shortcommings:  (due to fleabit)
	due to the lack of formatting information in fleabit format stacks,
some debuggor operations will not be possible.