A.(R0)=00H B.(R0)=20H C.(R0)=30H D.(R0)=38H
A.DJNZ Rn,rel B.CJNE Rn,#data, rel C.DJNZ direct, rel D.JBC bit, rel
A.SJMP B.LJMP C.LCALL D.MOVC A,@A+PC