ORG    $1000
START:
    CLR.W  D1
    MOVE.W NUM1,D2
    MOVE.W NUM2,D3
    MOVE.W NUM3,D4

    BSR.S  SUM
    MOVE.W D4,D5

    CLR.W D2
    CLR.W D3
    CLR.W D4

    MOVE.W NUM4,D2
    MOVE.W NUM5,D3
    MOVE.W NUM6,D4

    BSR.S  SUM
    SUB.W  D5,D4
    MOVE.W D4,RESULT

    MOVE.W RESULT,D1
    MOVE.W #3,D0
    TRAP   #15

    BRA EXIT

SUM:
    ADD.W  D2,D3
    ADD.W  D3,D4

    RTS
EXIT:
    SIMHALT

* VAR
NUM1 DC.W 5
NUM2 DC.W 5
NUM3 DC.W 5
NUM4 DC.W 2
NUM5 DC.W 2
NUM6 DC.W 1
RESULT DC.W 0
    END    START