Date : Tue, 10 Apr 1990 00:54:53 GMT
From : email@example.com (Peter da Silva)
Subject: Non-Intel Bashing...
In article <GRT23E1ccs@ficc.uu.net> firstname.lastname@example.org (Gary Korenek) writes:
> IMHO, a _really_ twisted microprocessor is the RCA 1802. No "CALL"
> or "RETURN" instructions, for example. If you want subroutines, you
> have to execute "CALL" code (that you have to include), and for the
> subroutine to return, the subroutine has to execute "RETURN" code
> (that you also must provide!).
Awww, I like the 1802. 16 16-bit registers, any of which could be PC or
SP, but no 16-bit load-and-store instructions. It really could do calls
and returns, but only to coroutines by setting the PC. And it was a really
neat processor for FORTH, because the Forth threaded call was *faster*
than the Standard Call and Return Technique.
This is getting off the subject of CP/M. Followups to comp.misc.
(by the way, this is being posted from my Xerox 820 for the first time.
I still don't have anything that can speak any protocols... :-<)
_--_|\ `-_-' Peter da Silva. +1 713 274 5180. <email@example.com>.
/ \ 'U`