The LASNOISE2 subroutine - Elite on the 6502

       Name: LASNOISE2                                               [Show more]
       Type: Subroutine
   Category: Sound
    Summary: An unused routine that makes the sound of the energy bomb going
             off
    Context: See this subroutine in context in the source code
 References: No direct references to this subroutine in this source file


.LASNOISE2

 LDY #11                ; Set Y = 11, though this has no effect as Y is set to
                        ; 25 in the following

 LDX #130               ; Set X = 130, though this has no effect as X is
                        ; overwritten with a random number before it is used

                        ; Fall through into SOBOMB to make the sound of an
                        ; energy bomb going off
                        ;
                        ; The above variables make no difference to the sound
                        ; made by SOBOMB, but given the title of the routine,
                        ; it was presumably designed to jump to the SOBLOP entry
                        ; point to make a higher-pitched variation of the laser
                        ; sound, rather than falling in to SOBOMB
                        ;
                        ; All that is missing is a BNE SOBLOP instruction to do
                        ; the jump
Sound: LASNOISE2

[Apple II version]
