Hello, for the guys who are willing to use a basic mapper.txt file, the buttons of Dingoo are equivalent to these keys:
A key 306
B key 308
X key 32
Y key 304
UP key 273
DOWN key 274
RIGHT key 275
LEFT key 276
L key 9
R key 8
START key 13
SELECT key 27
so, a sample mapper.txt could be...