There's now a (less technical but prettier and easier to understand) writeup at http://8088mph.blogspot.co.uk/2015/04/cga-in-1024-colors-new-mode-illustrated.ht

There's now a (less technical but prettier and easier to understand) writeup at http://8088mph.blogspot.co.uk/2015/04/cga-in-1024-colors-new-mode-illustrated.html http://8088mph.blogspot.co.uk/2015/04/cga-in-1024-colors-new... .