|
Routines |
| Prev: 40639 | Up: Map | Next: 40675 |
|
Plays a buzz, using a pattern of pulses which is based on the number of the pulse and a seed. This entry point uses 28 pulses and a seed of 39.
|
||||
| PlayDefaultBuzz | 40657 | LD C,28 | Set the number of pulses to 28. | |
| 40659 | LD E,39 | Set the seed to 39. | ||
|
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.
|
||||
| PlayBuzz | 40661 | LD A,C | Fetch the number of the pulse. | |
| 40662 | XOR E | Combine it with the seed. | ||
| 40663 | ADD A,A | Double it. | ||
| 40664 | LD B,A | Use it as the length of the pulse. | ||
| 40665 | AND %00011111 | Use bits 0-4. | ||
| 40667 | LD D,A | Use it as the length of the gap. | ||
| 40668 | CALL PlayPulse | Play a pulse. | ||
| 40671 | DEC C | Decrease the number of pulses by one. | ||
| 40672 | JR NZ,PlayBuzz | Jump back until they have all been played. | ||
| 40674 | RET | Return. | ||
|
View the equivalent code in;
|
||||
| Prev: 40639 | Up: Map | Next: 40675 |