🚀 go-pugleaf

   I'm fairly new to VGA hardware programming, but I think I've really gotten
the hang of the registers and latches and such (for Mode-X in particular).
The problem:  is there ANY way to perform logical functions between the latches
and video memory?  I can AND/OR/XOR pixels onto the screen very easily - just
setting the rotate/function select, reading from video (to prime the latches)
and then writing back.  This makes sense, but many of my routines write to
all planes at once - like rectangle fills, horizontal lines, and all bitblts.
Animating with ModeX seems a tad bit less attractive if it takes 4x as long
just to do an XOR.

any suggestions?

-court