WTPA2 DPCM support

WTPA2 code modified to load native NES samples (1-bit DPCM) from a uSD card. I could have converted them to wave but what's the fun in that?



Uploaded to WTPA via ISP/STK500 devkit.

128 samples taken from Bucky (explod2a03)'s DMC pack.
http://theshizz.org/forum/index.php?/topic/25657-n-e-s-sample-pack-v1/

As always, big ups to Todd Bailey (www.narrat1ve.com). If you're even remotely interested in this stuff you owe it to yourself to get a kit.