Exercise #1: Memory Layout
  
Question #1:

A           B           C           D           E        F
1F 00 00 00 E5 FF FF FF E4 FF FF FF 61 00 7A 17 43 00 AA AA 43

Question #2:

A  yes
B  yes
C  yes
D  no
E  no
F  yes


Exercise #2: Memory and Registers

                L1       L2       L3       L4       L5
Initial state:  3A FF 01 02 FF 6B B2 AA 42 41 61 62 D3 D5 D7

mov     eax, L3 	; eax = address of the B2 byte

mov     ebx, L5		; ebx = address of the D3 byte

mov     ecx, 0		; ecx = 00 00 00 00

mov     cl, [L2]        ; ecx = 00 00 00 02

sub     ebx, ecx        ; ebx = address of the 61 byte

mov     ebx, [ebx]	; ebx = D5 D3 62 61

add     eax, 2		; eax = address of the 42 byte

mov     ecx, [eax]	; ecx = 62 61 41 42

mov     [L4], cx	; updates the memory state:

                L1       L2       L3       L4       L5
                3A FF 01 02 FF 6B B2 AA 42 42 41 62 D3 D5 D7

mov     ax, [L1]	; ax = FF 3A

add     bx, ax		; ebx = D5 D3 62 61
                                      FF 3A
                                D5 D3 61 9B

mov     [L1], ebx	; udates the memory state:


                L1       L2       L3       L4       L5
Final state:    9B 61 D3 D5 FF 6B B2 AA 42 42 41 62 D3 D5 D7