Based on 1080p VGA driver from this thread: http://forums.parallax.com/discussion/171133/1080p-tile-driver-p1-style/p1
Putting together a GUI.
Got the basic elements drawn (see attached).
Still experimental, but things are looking good so far...
It's a fair balance of resources, uses half the cogs and less than half the HUB RAM (currently at 207 kB).
This is using the P1 ROM font and P1 style graphics with 16x16 pixel tiles.
Update: Used this for Mixed Signal Scope (code posted)
Note: See around page 3 for source code for various version of the mixed signal scope.