Question

"Write an assembly 32 bit program that adds two numbers (other than 5 and 6) and stores the value to a variable called 'sum'. Also, use a block COMMENT to depict the name and description of the program, author of the program, and date."
Code in assembly language please

Answer 1

ESI & EDI points to the two integers

EBX points to an address that will hold sum

clc                                               ; clear carry flag

L1 :

mov      a1 , [esi]                    ; get the first integer

adc      a1 , [edi]                     ; add the second integer

pushfd                                   ; save the carry flag

mov [ebx] , a1                      ; store partial sum

add   esi , 1                           ;points to next byte

add edi , 1

add ebx , 1                         ; point to next sum byte

popfd                                     ; restore the carry flag

loop         L 1                         ;repeat the loop

mov    dword ptr [ebx] , 0 ; clear high dword of sum

adc     dword ptr [ebx] , 0 ; add any left over carry

ret

ESI & EDI points to the two integers

EBX points to an address that will hold sum

clc                                               ; clear carry flag

L1 :

mov      a1 , [esi]                    ; get the first integer

adc      a1 , [edi]                     ; add the second integer

pushfd                                   ; save the carry flag

mov [ebx] , a1                      ; store partial sum

add   esi , 1                           ;points to next byte

add edi , 1

add ebx , 1                         ; point to next sum byte

popfd                                     ; restore the carry flag

loop         L 1                         ;repeat the loop

mov    dword ptr [ebx] , 0 ; clear high dword of sum

adc     dword ptr [ebx] , 0 ; add any left over carry

ret

ESI & EDI points to the two integers

EBX points to an address that will hold sum

clc                                               ; clear carry flag

L1 :

mov      a1 , [esi]                    ; get the first integer

adc      a1 , [edi]                     ; add the second integer

pushfd                                   ; save the carry flag

mov [ebx] , a1                      ; store partial sum

add   esi , 1                           ;points to next byte

add edi , 1

add ebx , 1                         ; point to next sum byte

popfd                                     ; restore the carry flag

loop         L 1                         ;repeat the loop

mov    dword ptr [ebx] , 0 ; clear high dword of sum

adc     dword ptr [ebx] , 0 ; add any left over carry

ret

ESI & EDI points to the two integers

EBX points to an address that will hold sum

clc                                               ; clear carry flag

L1 :

mov      a1 , [esi]                    ; get the first integer

adc      a1 , [edi]                     ; add the second integer

pushfd                                   ; save the carry flag

mov [ebx] , a1                      ; store partial sum

add   esi , 1                           ;points to next byte

add edi , 1

add ebx , 1                         ; point to next sum byte

popfd                                     ; restore the carry flag

loop         L 1                         ;repeat the loop

mov    dword ptr [ebx] , 0 ; clear high dword of sum

adc     dword ptr [ebx] , 0 ; add any left over carry

ret

ESI & EDI points to the two integers

EBX points to an address that will hold sum

clc                                               ; clear carry flag

L1 :

mov      a1 , [esi]                    ; get the first integer

adc      a1 , [edi]                     ; add the second integer

pushfd                                   ; save the carry flag

mov [ebx] , a1                      ; store partial sum

add   esi , 1                           ;points to next byte

add edi , 1

add ebx , 1                         ; point to next sum byte

popfd                                     ; restore the carry flag

loop         L 1                         ;repeat the loop

mov    dword ptr [ebx] , 0 ; clear high dword of sum

adc     dword ptr [ebx] , 0 ; add any left over carry

ret