mov ah,09
lea dx, joy1
int 21h

mov ah,1
int 21h

mov ch1,al

mov ah,09
lea dx,joy2
int 21h

mov ah,0
mov ah,1
int 21h

sub al,'0'
mov cl,al
mov ah,09
lea dx,msgout
int 21h

output:
mov ah,02
mov dl,ch1
int 21h

loop output

ret

ch1 db ?
ch2 db ?

joy1 db 13,10,'Enter interger letters:$'
joy2 db 13,10,'how many times:$'

msgout db 13,10,'Result:$'