HP-25/SR-56 Identical Conditionals

[Dave Britten]

(10-14-2021 01:16 AM)Valentin Albillo Wrote:  

(10-12-2021 06:20 PM)Matt Agajanian Wrote:  Yes, both the SR-56 and 52 had two looping constructs: 2nd DSZ (decrement and skip on zero) and INV 2nd DSZ (decrement and skip on non-zero).

The latter seems pretty dumb to me.

V.

I've had the occasional situation on an HP where it would be nice to decrement a counter and execute the next instruction only if the counter is now zero, but it's not super common. You can usually get around it with a GTO or some test that will always be false, but it's not quite as clean.