Routines
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45758: Play Music Until Key Pressed
Used by the routine at GameOver.
Plays a tune, which stops when a key is pressed. A tune is a list of notes (see PlayNote) which ends with 255.
Input
DE Address of the tune
Stop if a key is pressed.
PlayMusic_WaitKey 45758 XOR A Select all of the keyboard rows.
45759 CALL ReadKeyboardPort Call ReadKeyboardPort.
45762 JR Z,PlayMusic_WaitKey_Process Jump to PlayMusic_WaitKey_Process if no key is pressed.
45764 RET Return.
Play the next note.
PlayMusic_WaitKey_Process 45765 LD A,(DE) Fetch the next note.
45766 CP 255 Jump to PlayMusic_Return if it is 255.
45768 JR Z,PlayMusic_Return
45770 CALL PlayNote Call PlayNote.
45773 JR PlayMusic_WaitKey Jump to PlayMusic_WaitKey.
View the equivalent code in;
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