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Routines |
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Used by the routine at Play_MenuMusicTick.
Continue a music tick when Play_MenuMusicTick takes the carry path: build a delay via Build_MusicDelayCount, then either pulse the speaker, play the table-driven coda, or return.
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| Continue_MenuMusicTick | 64886 | PUSH AF | Stash AF, load stream-two's byte from 64645 into D, then restore AF. | |
| 64887 | LD A,(64645) | |||
| 64890 | LD D,A | |||
| 64891 | POP AF | |||
| 64892 | CALL Build_MusicDelayCount | Call Build_MusicDelayCount to build the delay count. | ||
| 64895 | CP 255 | Jump to Pulse_MenuMusicSpeaker if A is 255 (pulse the speaker). | ||
| 64897 | JR Z,Pulse_MenuMusicSpeaker | |||
| 64899 | CP 192 | Jump to Play_MenuMusicCoda if A is 192 (play the coda). | ||
| 64901 | JP Z,Play_MenuMusicCoda | |||
| 64904 | LD B,4 | Load B with 4 step bits. | ||
| 64906 | LD C,E | Copy the delay into C. | ||
| 64907 | RLA | Rotate A left through carry four times to walk the step mask. | ||
| 64908 | RLA | |||
| 64909 | RLA | |||
| 64910 | RLA | |||
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Apply the current step bit: pulse, hold, then loop.
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| Continue_MenuMusicTick_StepBit | 64911 | RLA | Rotate A left through carry once more for this step. | |
| 64912 | CALL C,Pulse_MenuMusicSpeaker | If carry is set, call Pulse_MenuMusicSpeaker to pulse the speaker. | ||
| 64915 | CALL NC,Hold_MenuMusicSilence_Loop | If carry is clear, call Hold_MenuMusicSilence_Loop for a silent hold. | ||
| 64918 | DJNZ Continue_MenuMusicTick_StepBit | Decrease B and loop to Continue_MenuMusicTick_StepBit while steps remain. | ||
| 64920 | RET | Return. | ||
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