I thought about it during the bus ride home. I don't think I got it right. I'll try again after the kids go to bed.
/P On Thu, Mar 21, 2019 at 04:37:26PM +0100, Pontus Pihlgren via cctalk wrote: > Hmm, sounds like a fun thing to figure out. How about this for a start. > Naive, written five minutes before I have to catch my bus, untested. > > I hope I understood the problem at least :) > > /P > > SATSUM,0 > CLA CLL > TAD I SATSUM > ISZ SATSUM > TAD I SATSUM > ISZ SATSUM > SNL > JMP I SATSUM > AND (4000) > SZA > TAD (3777) > JMP I SATSUM > > On Thu, Mar 21, 2019 at 12:26:37AM -0700, Kyle Owen via cctalk wrote: > > What is the shortest subroutine on a PDP-8 which will add two variables in > > RAM and return the saturated sum (that is, returning 2047 or -2048 upon > > overflow, otherwise the sum) in the accumulator? > > > > Kyle
