The 2.54mm through holes are for an expansion board that should allow all the other SD formats. This is so far a prototype board and will be tweaked a little after I order and test. Things not labled do not have a specific value yet. I will have to look at the actual signals. Assuming I haven't made any mistakes this board should work fine. I can only be bothered to use 3 color intensities. 255 (714mv), 191 (535mv), 0 (0mv). I can make color combinations using any of those three values to each individual RGB line. This should be more than enough to cover all the colors (there are only 8) R G B 255 000 000 = red 000 255 000 = green 000 000 255 = blue 255 255 255 = white 000 000 000 = black 191 191 191 = grey 191 255 191 = light green 191 191 255 = light blue If someone has better values to use let me know but they must match the format of 255, X , and 0. X can be anything I just chose 191 based of emulation screenshots.