Hello

I have trouble understanding the instruction lookup2
You can explain this example
thank you


datat var byte
datac var byte[40]

FOR j = 0 TO 39
LOOKUP2 datac[j],[65,48,56,66,52,67,68,60,50,69,70,71,72,54,62,73,49 ,74,75,57,76,53,61,77,78,51,79,80,55,81,82,69],datat
datac[j] = datat
next j