1. (20 pts) (a) Encode the last two instructions in binary L1: add $3, $7, $6 sub $1, $2, $3 addi $2, $1,8 sw S4, 7(S2) bne $3, $5, LI (b) What MIPS instruction does each of the following 32-bit binary number represent? 00000 00001000 1100 0 0 1000000100 1 0 I 0 010100001 1 1001 100 0 00 00 0 0 0 0 1 0 1 0 1 2. (10 pts) The following table shows portion of the memory map of a computer. All numbers in the table are in hexadecimal. What is the result of the following instructions if the computer is a little endian machine? Assume Sa0-0x52000040 at the beginning. Address 0x52000040 Contents 12 (a) 0x52000041 23 0x52000042 34 0x52000043 FF 0x52000044 56 Ox52000045 67 0x52000046 78 0x52000047 89 0x52000048 DD 0x52000049 CC 0x5200004A AA (b) 0x5200004B C9 0x5200004C 38 0x5200004D 40 0x5200004E 40 0x5200004F AE 0x52000050 33 0x52000051 FF 0x52000052 01 0x52000053 FE addi St4, $0, 4 sll St4, St4, 2 add Sa0, Sa0, $14 Iw St0, -4(Sa0) i.e., St0= Show on the left memory map the result of the following instructions assuming big endian computer, where Ss2-0x 52000044 and $s1 = 0x FFESAB70. In order words, the contents of which memory locations will be changed to what values after the following two instructions are executed. addi Ss2, $s2, 8 sw $s1, -4($s2)