[comp.sys.ibm.pc.hardware] screen saver

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.