🚀 go-pugleaf

> I notice that everytime my code switches video modes (for example,
> using Abrash's mode set code to switch to Mode X) my monitor 
> crackles and clicks loudly.  Now, I know that this is something
> that multisync monitors do when switching video modes, but I don't
> think that I have ever seen a commercial game cause this.  Is
> there some way to temporarily disable the screen during the actual
> mode switch?  Or anyway to "cleanly" switch modes?  (Especially
> in and out of Mode X.)

There are a few different methods.  The one I use most for my games and demos
is as follows.

1) CLI.
2) Wait for vertical retrace.
3) Clear the palette to black through means of ports 3C8h and 3C9h.
4) Wait for vertical retrace.
5) STI.
6) Set new mode.

-Joshua Jensen