Sound: MUTOKCH

       Name: MUTOKCH                                                 [Show more]
       Type: Subroutine
   Category: Sound
    Summary: Process a change in the docking music configuration setting
    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * DK4 calls MUTOKCH


 Arguments:

   A                    The new value of MUTOK


.MUTOKCH

 STA MUTOKOLD           ; Store the new value of MUTOK in MUTOKOLD so we can
                        ; check whether it changes again

 EOR #$FF               ; If MUTOK = 0 and bit 7 of auto is set, then the
 AND auto               ; docking music has just been enabled and the docking
 BMI april16            ; computer is running, so jump to april16 to start
                        ; playing the docking music

                        ; Otherwise either the docking music has just been
                        ; disabled and/or the docking computer is not running,
                        ; so fall through into stopbd to stop playing the
                        ; docking music