ydist@unix.cis.pitt.edu (Yijun Ding) (07/26/90)
Is the screen saver program really differ from that of first set color to black and then clear screen? In VGA, when a program is running, I can call int 12h, service 36h, or, textattr(0); clrscr(); I notice the screen saver program on mac does not disable video output.