Adafruit's 2.8" TFT touchscreen
  http://www.adafruit.com/products/335
  http://www.ladyada.net/products/tfttouchbreakout/

touchscreen additions to sei's maple code, described here
 http://forums.leaflabs.com/topic.php?id=1755
with his original code here
  https://gist.github.com/2728041

modified Arduino version of touchscreen library code to work with maple.
  adjust analogRead() code to use 12-bit values
 as with Arduino, shared some pins
 board pins: D7-D0              ym xm yp xp bklite RST RD WR CD CS 3/5 GND
       maple 7 6 13 4 11 10 9 8                     15 16 17 18

did not make changes to sei's code, but library and examples are
structured so that you could put them in your maple sketchbook 
libraries/ directory
 besides graphicstest example, added rotationtest,tftpaint, touchscreendemo