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Routines |
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| PlaySquareWave | 64AA | LD A,$10 | A=10 (speaker on = bit 4). | |||||
| 64AC | OUT ($FE),A | |||||||
| 64AE | LD B,D | Decrease duration by one and loop back to PlaySquareWave_Loop until counter is zero. | ||||||
| PlaySquareWave_Loop | 64AF | DJNZ PlaySquareWave_Loop | ||||||
| 64B1 | XOR A | Speaker off. | ||||||
| 64B2 | OUT ($FE),A | |||||||
| 64B4 | LD B,D | Decrease duration by one and loop back to Silence_Loop until counter is zero. | ||||||
| Silence_Loop | 64B5 | DJNZ Silence_Loop | ||||||
| 64B7 | RET | Return. | ||||||
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