19 Nov
2018
19 Nov
'18
4:27 p.m.
On Mon, Nov 19, 2018 at 2:24 PM Sean Conner via cctalk <
cctalk at classiccmp.org> wrote:
I've always been amused by IEFBR14 ever since I
heard about it. I first
came across it by this quote:
Every program has at least one bug and can be shortened by at least
one instruction---from which, by induction, one can deduce that
every program can be reduced to one instruction which doesn't work.
IEFBR14 was this program---one instruction long, and it contained a bug:
http://en.wikipedia.org/wiki/IEFBR14
By induction you should be able to reduce a program to zero instructions.
On CP/M, you actually can, and the resulting program is useful, and as far
as I know, has zarro boogs. (Which instruction could a bug be in?)