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Routines |
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The handler for sound effect actors with the ID 19. Each time it is called it plays a number of cycles (IX+02), and then makes the period (IX+03) shorter, which raises the pitch. The actor is removed when the period reaches zero.
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| Handler_RisingSweep | 6888 | DEC (IX+$03) | Decrease the period by one, which raises the pitch. | |||||
| 688B | JR Z,RemoveActor | Jump to RemoveActor if the period is zero. | ||||||
| 688D | LD D,(IX+$03) | Fetch the period. | ||||||
| 6890 | LD C,(IX+$02) | Fetch the number of cycles. | ||||||
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This entry point is used by the routine at Handler_Notes.
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| Handler_PlayCycles | 6893 | CALL PlaySquareWave | Play a cycle using PlaySquareWave. | |||||
| 6896 | DEC C | Decrease the cycle counter by one. | ||||||
| 6897 | JR NZ,Handler_PlayCycles | Loop back to Handler_PlayCycles until all of the cycles have been played. | ||||||
| 6899 | RET | Return. | ||||||
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