| Deathchase | Routines |
| Prev: 6453 | Up: Map | Next: 6491 |
| 6478 | EX AF,AF' | |||
| 6479 | LD B,$02 | Timing constant | ||
| 647B | DEC H | |||
| 647C | JR NZ,$6484 | |||
| 647E | XOR $10 | Toggle the speaker | ||
| 6480 | OUT ($FE),A | |||
| 6482 | LD H,$4B | |||
| 6484 | DEC L | |||
| 6485 | JR NZ,$647B | |||
| 6487 | XOR $10 | Toggle the speaker | ||
| 6489 | OUT ($FE),A | |||
| 648B | LD L,$28 | |||
| 648D | DJNZ $647B | |||
| 648F | EX AF,AF' | |||
| 6490 | RET | |||
| Prev: 6453 | Up: Map | Next: 6491 |