I've gotten as far as U8g 'hello world' with the following constructor:
U8GLIB_T6963_128X64 u8g(37, 35, 33, 31, 29, 27, 25, 23, 43, 45, 39, 41); // 8Bit Com: D0..D7: 8,9,10,11,4,5,6,7, cs=14, a0=15, wr=17, rd=18, reset=16
But I'm not sure how to import that into Marlin in a way that would make sense?
Should I be creating a new board definition and pins_xxx.h?
Or just modify the default definitions? (and the default is what?)
I'm finding the code to be insanely difficult to navigate, and comment sparse.