7 Nov
2005
7 Nov
'05
5:47 p.m.
On 11/7/2005 at 11:57 PM ard at p850ug1.demon.co.uk wrote:
Be careful!. I have in the back of my mind the idea
that the 8008 has an
internal (8-ish level) return stack and doesn't use RAM for this. So you
could still have RAM problems.
Exactly--and they're 14 bits (not 16) wide--and overflow and underflow are
not checked for. It's sometimes easier just to think of it as 8 14-bit
P-counters, with the CALL and RET simply incrementing and decrementing the
pointer to the appropriate P-counter (with CALL performing a jump to load
the current P-counter).
Cheers,
Chuck