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Routines |
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Used by the routine at 27291.
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| SoundsCupRefuel | 24859 | LD A,(24105) | A=GameTimer. | |
| 24862 | AND %00000001 | Keep only bit 0. | ||
| 24864 | RET NZ | Return every other frame. | ||
| 24865 | LD HL,24134 | HL=SoundCounter. | ||
| 24868 | LD A,(HL) | A=item ID. | ||
| 24869 | BIT 7,A | Jump to SoundsCup if bit 7 is not set. | ||
| 24871 | JR NZ,SoundsCup | |||
| 24873 | AND A | Return if item ID is zero. | ||
| 24874 | RET Z | |||
| 24875 | DEC A | Decrease A/ item ID by one. | ||
| 24876 | LD (HL),A | Store A at SoundCounter. | ||
| 24877 | RET Z | Return if the new item ID is zero. | ||
| SoundsRefuel | 24878 | RLCA | A=A * 4. | |
| 24879 | RLCA | |||
| 24880 | AND %00011100 | Keep only bits 2-4. | ||
| 24882 | OR %00100000 | Set bit 5. | ||
| 24884 | LD D,A | Store the result in D. | ||
| 24885 | LD C,32 | C=32. | ||
| SoundsCupRefuel_Loop | 24887 | CALL PlaySquareWave | Call PlaySquareWave. | |
| 24890 | DEC C | Decrease C by one. | ||
| 24891 | JR NZ,SoundsCupRefuel_Loop | Jump back to SoundsCupRefuel_Loop until C is zero. | ||
| 24893 | RET | Return. | ||
| SoundsCup | 24894 | AND %01111111 | Keep only bits 0-6. | |
| 24896 | RET Z | Return if A is now zero. | ||
| 24897 | DEC A | Decrease A by one. | ||
| 24898 | OR %10000000 | Set bit 7. | ||
| 24900 | LD (HL),A | Store A at SoundCounter. | ||
| 24901 | AND %01111111 | Keep only bits 0-6. | ||
| 24903 | RET Z | Return if A is now zero. | ||
| 24904 | CPL | Flip the bits. | ||
| 24905 | JR SoundsRefuel | Jump to SoundsRefuel. | ||
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