a = 8'h04  inseamna a = 0000_0100
b = 8'h0c  inseamna b = 0000_1100

Dupa 1 ciclu:
a = 0000_1100 (b) - 0000_0100 (a) = 0000_1000
b = 0000_1100 (b) + 0000_0100 (a) = 0001_0000

Dupa 2 cicli:
a = 0001_0000 (b) - 0000_1000 (a) = 0000_1000
b = 0001_0000 (b) + 0000_1000 (a) = 0001_1000

Dupa 3 cicli:
a = 0001_1000 (b) - 0000_1000 (a) = 0001_0000
b = 0001_1000 (b) + 0000_1000 (a) = 0010_0000 -> In zecimal are valoarea 32