4-8 Assume that the registers are initialized to EAX = 12345D, EBX = 9528D ECX =

Question

4-8 Assume that the registers are initialized to

                EAX = 12345D, EBX = 9528D

ECX = -1275D, EDX = -3001D

What is the destination operand value (in hex) after executing the following instructions:

(Note: Assume that the four registers are initialized as shown above for each question.)

               (a)           add       EAX, EBX                              (b)          sub         AX, CX

                                                5571H                                                                   FFCCH

(c)          and        EAX, EDX                              (d)          or            BX, AX

(e)         not         EDX                                        (f)           shl          BX, 2

(g)         shl          EAX, CL                                 (h)          shr          BX, 2

(i)            shr          EAX, CL                                 (j)           sub         CX, BX

(k)          add        ECX, EDX                              (l)            sub         DX, CX

Explanation / Answer

here EDX is 00000000001100000000000100001101

EAX is 000100100011010001011101

ECX is 000000010010011101011101

EBX is 10010101001010001101

CL is 5D

a) EAX has 9528D

b) AX has D00

c) EAX has FFFCFF3

d) BX has 76DD

e) FFCFFEF2

using above values we can find all values

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