VGA for Carte Blanche operational

[Alex Freed <alex_news@mirrow.com>]

Well, as I mentioned before I was working on an LCD friendly 
implementation of a VGA video adapter for the CB. What I had before was 
a piece cut out of a full FPGApple that didn't look all that great on 
anything but an analog VGA display.
Now what I consider to be a main default application for the CB is done. 
It works well enough so I don't need to keep an extra composite monitor 
on the table any more! Look at the pictures:

http://alexfreed.com/FPGApple/CarteBlancheVGA.html

I optimized it for the text and I dare say the text is done right. I 
made another mode for 80 col text using 640x480 and 8x8 fonts but never 
used it as the more genuine looking Apple's own font is readable enough.

The graphics could be improved in a number of ways:

1. Make a (soft ?) switch turning the color off for applications using 
text or monochrome graphics on hi-res screen.

2. Implement a different "filter". For example fill-in the dark pixels 
between 2 of the same color.

3. Implement color change detection as per Apple patent.

I'm not gonna do that for now. Maybe later. Maybe somebody else will do 
it first if we start manufacturing soon enough. This project is also a 
good illustration of the size of the FPGA chip. Less than 2% of logic is 
used!

-Alex.