Crystal is 8 MHz!  The demo code uses PLL 16X giving a 128MHz clock speed!  This seems borderline...  Some people have found they have to drop to PLL 8X when using multiple cogs or assembly code.

There's a discussion here: 

"Atilla" from 4dsystems discusses this here.

It appears that the controller IC for the display (the long thin rectangle mounted directly under the display and connected by flexible data cable) is the SSD1331 from http://www.solomon-systech.com

 Here's a datasheet for the SSD1331

Pinout:

Diagram: