Message-ID: <1741@sri-arpa.UUCP>
Date: Thu, 2-Jun-83 18:14:43 EDT
Article-I.D.: sri-arpa.1741
Posted: Thu Jun  2 18:14:43 1983
Date-Received: Tue, 7-Jun-83 00:14:43 EDT
Lines: 10

From:  John Palevich 

On page 2-64 of the Technical Reference Manual, IBM mentions
"Interrupt Level (Vertical Retrace) Level 2".

What does this mean?  In my ATARI home computer I can use a vertical
blank interrupt to write better games.  I'd like to do the same sort
of thing on my IBM; does anybody know how to do it?

P.S.  It's useful for non-game programs, too.