And the exception to every rule, the RCA 1802 COSMAC,
doesn't really have stack instructions, doesn't have standard call & return
instructions,
but does let you pick which of 16 registers is your stack pointer (:
-- strick
Probably ruled out by the "no forth" rule,
the 6809 had data register stacking instruction for either the S or the
extra U stack pointer
PSHS | PULS | PSHU | PULU X,Y,D,CC,...
and I think you could use
PULU PC,...
for return, just like you commonly use
PULS PC,...
as a quic
Having been to VCF-West many times in the past,
I'd be very surprised if you can't just show up Friday or Saturday and buy
tickets there at the CHM.
I always did.
(Exhibitors are setting up today and that probably consumes all the time of
the
volunteers that make this event possible. So if you ge
