| Dynamite Dan | Routines |
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Used by the routine at 5E52.
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The length is taken as the top value on the stack. This routine is modified when run, changing the code for subsequent runs
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| 5E76 | POP BC | Get the length off the stack - 3A | ||||||
| 5E77 | LD A,(HL) | Put the next byte in A | ||||||
| 5E78 | NEG | Invert its sign | ||||||
| 5E7A | LD (HL),A | Store it | ||||||
| 5E7B | INC HL | Point to next byte | ||||||
| 5E7C | DJNZ $5E77 | Loop round if more to do | ||||||
| 5E7E | POP HL | Take HL off the stack - 67ED | ||||||
| 5E7F | LD ($5E78),HL | Modify the above instruction to read RRD (ED, 67) | ||||||
| 5E82 | POP BC | Get the next length off the stack (3A) | ||||||
| 5E83 | LD A,$C9 | Change the above code to return early after the loop at 5E7C | ||||||
| 5E85 | LD ($5E7E),A | |||||||
| 5E88 | LD A,$00 | Remove the above LD (HL), A - as RRD does a bit shift across A and (HL) it is not required | ||||||
| 5E8A | LD ($5E7A),A | |||||||
| 5E8D | PUSH DE | Restore original start of 5E12 in HL | ||||||
| 5E8E | POP HL | |||||||
| 5E8F | RET | Return to decrypt again at 5E77 | ||||||
| Prev: 5E71 | Up: Map | Next: 5E77 |