How can I check if a number from 0 to 50 is prime in assembly code? This is the code I wrote, but it only works for numbers from 0 to 10.
.MODEL SMALL
.stack 100H
.DATA
VAL1 DB ?
NL1 DB 0AH,0DH, 'ENTER NO: ','$'
NL2 DB 0AH,0DH, 'IT IS NOT PRIME','$'
NL3 DB 0AH,0DH, 'IT IS PRIME','$'
.CODE
MAIN:
MOV AX,@DATA
MOV DS,AX
LEA DX,NL1
MOV AH,09H
INT 21H
MOV AH,01H
INT 21H
SUB AL,30H
MOV VAL1,AL
MOV AH,00
MOV CL,2
DIV CL
MOV CL,AL
LBL1:
MOV AH,00
MOV AL,VAL1
DIV CL
CMP AH,00
JZ LBL2
DEC CL
CMP CL,1
JNE LBL1
JMP LBL3
LBL2:
MOV AH,09H
LEA DX,NL2
INT 21H
JMP EXIT
LBL3:
MOV AH,09H
LEA DX,NL3
INT 21H
EXIT:
MOV AH,4CH
INT 21H
END MAIN
