org       0h
         
         db        5 dup (0ffh)

         MOVI      R0,0xff
         ADD       R0,R0

         LDSR
         LDIR
         STMR

         db        5 dup (0ffh)

         EI

         db        20 dup (0ffh)

         org       88h
         RETI

         db        20 dup (0ffh)

         org       0ffeeh
         db        13h,00h,88h
end