3.128 if r2 = 0xB903 8471 and 3 = 16, what effective address is generated by the instruction LDR r0, [r2, -r3, LSL #1]? 3.132 Assume that r2 contains the initial value 0x0000 104C. Explain the effect of each of the following six instructions, and give the value in r2 after each instruction executes. Use register transfer notation. (a) STR r1, [12] (b) STR r1, (r2, #8] (c) STR 1, 12, #8]! (d) STR rl, [r2) #8 (e) STR rl, (r2, 10, LSL #8)