.FUNC Monkey
;---------------------------------------------------------------------
;
; FUNCTION Monkey: BOOLEAN;
;
TST MonkeyLives ;IS THE MONKEY ACTIVE ?
SGE 4(SP) ;YES IF >= ZERO
NEG.B 4(SP) ;CONVERT TO PASCAL BOOLEAN
RTS
According to http://folklore.org/StoryView.py?project=Macintosh&story..., this was used to detect an keypress/mousemove/mousepress-generating testing tool and turn off a few things (Apple menu, File menu, and Quit command, in this case).
MonkeyLives (aka low memory global address $100) was a system global that was usually off. If you saw it on, it indicated that the equivalent of a monkey was loose on the keyboard. IOW, don't do anything dangerous when true.
