assembly/subtraction_two_number.asm at main · nurulabsr/assembly · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
.model small
.stack 100h
.data

message_1 db "Enter your frist number: $"
message_2 db "Enter your 2nd number: $"
result db "Result: $"
.code

main proc
    mov ax, @data
    mov ds, ax


    mov ah, 9
    lea dx, message_1
    int 21h

    mov ah,1
    int 21h
    mov cl, al


    mov ah,2
    mov dl, 07
    int 21h

    mov ah,2
    mov dl, 10
    int 21h
    mov dl, 13
    int 21h


    mov ah,9
    lea dx, message_2
    int 21h

    mov ah,1
    int 21h
    mov bl,al

    ;;;;;;;;;;;;;;;;;;;;;;;;;;;   Nothing
    mov ah,2
    mov dl, 07
    int 21h

    mov ah, 2
    mov dl,10
    int 21h
    mov ah,13
    int 21h


    mov ah,9
    lea dx,result
    int 21h
    ;;;;;;;;;;;;;;;;;;;;;;;;;;;   Subtract

    sub cl,bl
    add cl, 48

    mov ah, 2
    mov dl, cl
    int 21h


    ;;;;;;;;;;;;;;;;;;;;;;;;;;;
    mov ah,2
    mov dl, 07
    int 21h

    mov ah,2
    mov dl, 07
    int 21h

    mov ah,2
    mov dl, 07
    int 21h

    mov ah,2
    mov dl, 07
    int 21h


    exit:
    mov ah, 4ch
    int 21h
    endp main
end main