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Routines |
| Prev: 62720 | Up: Map | Next: 63048 |
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Used by the routines at SoundHandler_BombFuse and SoundHandler_BombSparks.
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| SoundGenerator_WhiteNoise | 63000 | PUSH BC | Stash BC and BC on the stack. | |
| 63001 | PUSH BC | |||
| 63002 | CALL WhiteNoiseGenerator | Call WhiteNoiseGenerator. | ||
| 63005 | LD BC,65534 | Send *Active_BorderColour to the speaker port. | ||
| 63008 | LD A,(23504) | |||
| 63011 | OUT (C),A | |||
| 63013 | POP BC | Restore BC from the stack. | ||
| 63014 | CALL WhiteNoiseGenerator | Call WhiteNoiseGenerator. | ||
| 63017 | LD BC,65534 | BC=65534 (C points to the speaker port). | ||
| 63020 | LD A,(23504) | A=*Active_BorderColour. | ||
| 63023 | OR %00010000 | Turn on the speaker (set bit 4). | ||
| 63025 | OUT (C),A | Send A to port *C. | ||
| 63027 | POP BC | Restore BC from the stack. | ||
| 63028 | DEC DE | Decrease DE by one. | ||
| 63029 | LD A,D | Jump to SoundGenerator_WhiteNoise until DE is zero. | ||
| 63030 | OR E | |||
| 63031 | JR NZ,SoundGenerator_WhiteNoise | |||
| 63033 | RET | Return. | ||
| WhiteNoiseGenerator | 63034 | PUSH BC | Stash BC on the stack. | |
| 63035 | CALL BombTimer | Call BombTimer. | ||
| 63038 | AND B | Merge the bits from B. | ||
| 63039 | LD B,A | B=A. | ||
| 63040 | CP 0 | Jump to WhiteNoiseHouseKeeping if A is zero. | ||
| 63042 | JR Z,WhiteNoiseHouseKeeping | |||
| WhiteNoiseDelay | 63044 | DJNZ WhiteNoiseDelay | Decrease counter by one and loop back to WhiteNoiseDelay until counter is zero. | |
| WhiteNoiseHouseKeeping | 63046 | POP BC | Restore BC from the stack. | |
| 63047 | RET | Return. | ||
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