mov #0,W5
btss    PORTD, #6   ; keypad entry?  if the bit is 1, skip. otherwise again check_keypad
bra     check_keypad
inc W5,W5
mov     #psvoffset(lookup), W1 ; w1 is a pointer to the first byte of the lookup table (to 0).
mov.b   [W5+W1], W5 ; correct number written to w5.

mov     #LCD_line2, W1   ; W5 is a pointer to the first element of line2
mov.b   W5, [W1+15]      ; Display the last element of line2
bset    PORTD, #13      ; turn the buzzer on