i really don't understand what you want to do...
but if you just want to display the content of
the stack (say 56)..try tweaking these codes:
push 56h
mov bp,sp
mov al,[bp]
mov bl,al
mov bh,al
shr bh,4
add bh,30h
and bl,0fh
add bl,30h
disp:
mov ah,02
mov dl,bh
int 21h...