| |
Routines |
| Prev: 644D | Up: Map | Next: 64AA |
|
Used by the routine at 64FA.
|
||||
| 6473 | LD C,$0F | C=0F. | ||
| 6475 | LD A,C | |||
| 6476 | RRCA | |||
| 6477 | RRCA | |||
| 6478 | RRCA | |||
| 6479 | AND %00000111 | Keep only bits 0-2. | ||
| 647B | CPL | |||
| 647C | DAA | |||
| 647D | LD D,A | |||
| 647E | CALL PlaySquareWave | Call PlaySquareWave. | ||
| 6481 | DEC C | |||
| 6482 | JR NZ,$6475 | |||
| 6484 | RET | Return. | ||
|
This entry point is used by the routine at 64FA.
|
||||
| 6485 | LD A,($5E19) | |||
| 6488 | AND $7F | |||
| 648A | OR $30 | |||
| 648C | LD ($6495),A | |||
| 648F | LD C,$20 | |||
| 6491 | LD A,C | |||
| 6492 | XOR $0F | |||
| 6494 | AND $1F | |||
| 6496 | LD D,A | |||
| 6497 | CALL PlaySquareWave | Call PlaySquareWave. | ||
| 649A | DEC C | |||
| 649B | JR NZ,$6491 | |||
| 649D | RET | Return. | ||
|
This entry point is used by the routine at 6A98.
|
||||
| 649E | LD C,$10 | |||
| 64A0 | LD A,C | |||
| 64A1 | RRCA | |||
| 64A2 | LD D,A | |||
| 64A3 | CALL PlaySquareWave | Call PlaySquareWave. | ||
| 64A6 | DEC C | |||
| 64A7 | JR NZ,$64A0 | |||
| 64A9 | RET | |||
| Prev: 644D | Up: Map | Next: 64AA |