[net.micro.mac] flickering apple on screen

edmoy@ucbopal.CC.Berkeley.ARPA (01/16/85)

I've just submitted a modified version of the sleep desk accessory to
net.sources and info-mac.  In this version, an apple moves continuously
around the screen.  I've noticed that on my 128K Mac at work and my
512K Mac at home, that when the apple moves to a region about the upper
middle quarter of the screen, it starts to flicker.  The desk accessory is
call 30 times a second, and doesn't flicker outside this region on the
screen.  Anybody know why?

Edward Moy
Computing Services
University of California
Berkeley, CA  94720

edmoy@ucbopal
ucbvax!ucbopal!edmoy