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Routines |
| Prev: 96C9 | Up: Map | Next: 96F4 |
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Used by the routine at 87CA.
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| 96DE | LD E,A | Save the value of A in E for later retrieval | ||||||
| 96DF | LD C,$FE | We will output to port 0xFE | ||||||
| 96E1 | LD D,A | Copy A into D; bits 0-2 of D determine the initial border colour | ||||||
| 96E2 | RES 4,D | Reset bit 4 of D (initial speaker state) | ||||||
| 96E4 | RES 3,D | Reset bit 3 of D (initial MIC state) | ||||||
| 96E6 | LD B,E | Initialise B (delay counter for the inner loop) | ||||||
| 96E7 | CP B | Is it time to flip the MIC and speaker and make the border black? | ||||||
| 96E8 | JR NZ,$96EC | Jump if not | ||||||
| 96EA | LD D,$18 | Set bits 3 (MIC) and 4 (speaker) of D, and reset bits 0-2 (black border) | ||||||
| 96EC | OUT (C),D | Set the MIC state, speaker state and border colour | ||||||
| 96EE | DJNZ $96E7 | Jump back until the inner loop is finished | ||||||
| 96F0 | DEC A | Is the outer loop finished too? | ||||||
| 96F1 | JR NZ,$96E1 | Jump back if not | ||||||
| 96F3 | RET | |||||||
| Prev: 96C9 | Up: Map | Next: 96F4 |