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calcol.asm
256 lines (179 loc) · 3.42 KB
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calcol.asm
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title calcolatrice;
data segment
n1 DB ?
n2 DB ?
oper DB ?
msg DB "Inserire il primo numero : $"
msg1 DB "Inserire il secondo numero : $"
msg2 DB "Inserire l'operatore : $"
msg3 DB "Il risultato e' : $"
msg4 DB "Errore!! $"
msg5 DB " con il resto di : $"
data ends
assume cs:code, ds:data
code segment
inizio: mov ax,data
mov ds,ax
lea dx,msg
mov ah,09
int 21h
mov ah,01
int 21h
mov n1,al
sub n1,30h
lea dx,msg1
mov ah,09
int 21h
mov ah,01
int 21h
mov n2,al
sub n2,30h
lea dx,msg2
mov ah,09
int 21h
mov ah,0
mov ah,01
int 21h
mov oper,al
;sub oper,30h
cmp oper,43
jz somma
cmp oper,45
jz sottra
cmp oper,42
jz molti
cmp oper,47
jz divi
somma: mov dl,n2
add dl,n1
cmp dl,10
jb min9
lea dx,msg3
mov ah,09
int 21h
mov al,10
mul n1
mov dl,0
mov dl,n2
add n1,dl
mov ah,0
mov al,n1
mov bh,10
div bh
add al,30h
add ah,30h
mov n1,al
mov n2,ah
mov dl,n1
mov ah,02
int 21h
mov dl,n2
mov ah,02
int 21h
jmp fineif
sottra: jmp sottra2
min9: lea dx,msg3
mov ah,09
int 21h
mov dl,n2
add dl,n1
add dl,30h
mov ah,02
int 21h
jmp fineif
molti: jmp molti1
divi: jmp divi1
sottra2: mov dl,n2
mov al,n1
sub al,dl
cmp al,0
jb errore
cmp al,9
ja errore
add al,30h
mov n1,al
;cmp n1,9
;ja magg9
lea dx,msg3
mov ah,09
int 21h
mov dl,n1
mov ah,02
int 21h
jmp fineif
magg9: lea dx,msg3
mov ah,02
int 21h
mov al,10
mul n1
mov dl,n2
sub n1,dl
mov ah,0
mov al,n1
mov bh,10
div bh
add al,30h
add ah,30h
mov dl,al
mov ah,02
int 21h
mov dl,ah
mov ah,02
int 21h
jmp fineif
errore : lea dx,msg4
mov ah,09
int 21h
fineif: jmp fineif1
molti1: mov al,n2
mul n1
mov n1,al
cmp n1,9
ja nummag
lea dx,msg3
mov ah,09
int 21h
mov dl,n1
add dl,30h
mov ah,02
int 21h
jmp fineif1
nummag: lea dx,msg3
mov ah,09
int 21h
mov ax,0
mov al,n1
mov bh,10
div bh
add al,30h
add ah,30h
mov n1,ah
mov dl,al
mov ah,02
int 21h
mov dl,n1
mov ah,02
int 21h
jmp fineif1
divi1: mov ah,0
mov al,n1
mov bh,n2
div bh
add al,30h
add ah,30h
mov n1,al
mov n2,ah
mov dl,n1
mov ah,02
int 21h
lea dx,msg5
mov ah,09
int 21h
mov dl,n2
mov ah,02
int 21h
jmp fineif1
fineif1: mov ah,04ch
int 21h
code ends
end inizio