4. (a) Follow the instructions below CONSECUTIVELY, and after each instruction write the value of destination register in decimal into the space provided. ORRI XO, X31, 2 ADD X1, XO, XO LSL X2, X1, 3 SUB X3, X2, X1 ANDI X4, X3, 12 // X0 = // X1 //X2 = 1/X3 = //X4= (b) For the following LEG8 assembly, assume that the registers X1 and X6, contain the values 20 and 256, respectively. Also, assume that memory contains the following values. What is the value of XO? SUBI X6, X6, 20 ADD X6, X6, X1 LDUR X0, [X6, 8] //X0 = Address 256 260 264 Contents 100 200 300