iadd auf einem 680x0

    ; a4 is the optop
    ; a0 is the pc
    opc_iadd:
    // add top two stack elements
    *18 optop[2].I = optop[2].I+optop[3].I;
    MOVE 12(A4),D0
    ADD D0,8(A4)
    *19 optop = optop-1;     // adjust stack pointer
    SUBQ.L #4,A4
    *20 pc = pc+1;           // used one byte code so bump pc forward
    ADDQ.L #1,A0