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Routines |
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Plays a buzz, using a pattern of pulses which is based on the number of the pulse and a seed. This entry point uses 1C pulses and a seed of 27.
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| PlayDefaultBuzz | 9ED1 | LD C,$1C | Set the number of pulses to 1C. | |
| 9ED3 | LD E,$27 | Set the seed to 27. | ||
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This entry point is used by the routines at PlayShortBuzz, PlayTinyBuzz, PlayBuzzSweep, PlayLongBuzz, PlayMediumBuzz and PlayBriefBuzz.
This entry point takes the number of pulses in C and the seed in E.
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| PlayBuzz | 9ED5 | LD A,C | Fetch the number of the pulse. | |
| 9ED6 | XOR E | Combine it with the seed. | ||
| 9ED7 | ADD A,A | Double it. | ||
| 9ED8 | LD B,A | Use it as the length of the pulse. | ||
| 9ED9 | AND %00011111 | Use bits 0-4. | ||
| 9EDB | LD D,A | Use it as the length of the gap. | ||
| 9EDC | CALL PlayPulse | Play a pulse. | ||
| 9EDF | DEC C | Decrease the number of pulses by one. | ||
| 9EE0 | JR NZ,PlayBuzz | Jump back until they have all been played. | ||
| 9EE2 | RET | Return. | ||
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View the equivalent code in;
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