Answer to Question #165375 in Assembler for Anna

Question

Write an assembly program for add of two eight bit no. at

4000H=2CH and 4001H=30H and save result at 4002H

Answer 1

    ; Writing two numbers into the adresses 4000H=2CH and 4001H=30H
    mov bx, 0x4000
    mov byte ptr [bx], 2CH
    mov bx, 0x4001
    mov byte ptr [bx], 30H
    ; Initializing the accumulator to save the sum
    mov ax, 0
    ; Adding the first number
    mov bx, 0x4000
    mov al, byte ptr [bx]
    ; Adding the second number
    mov bx, 0x4001
    add al, byte ptr [bx]
    ; Saving the result at 4002H
    mov bx, 0x4002
    mov byte ptr [bx], al