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Routines |
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Decrypts the game by running RRD on every byte from 7FFF up to FBFE, then jumps to SecurityCheck.
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Decrypt every byte from 7FFF upwards.
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| GameEntry | 5B80 | LD HL,$7FFF | Set the start address to 7FFF. | |
| 5B83 | LD BC,$007C | Set B to 00 so each inner pass covers one page, and C to 7C pages. | ||
| 5B86 | XOR A | Reset the flags. | ||
| Decryption_Loop | 5B87 | RRD | Rotate the current byte right through the accumulator. | |
| 5B89 | INC HL | Move onto the next byte. | ||
| 5B8A | DJNZ Decryption_Loop | Decrease B by one and loop back to Decryption_Loop until this page is done. | ||
| 5B8C | DEC C | Decrease the page count by one. | ||
| 5B8D | JR NZ,Decryption_Loop | Loop back to Decryption_Loop until every page is decrypted. | ||
| GameEntry_Jump | 5B8F | JP SecurityCheck | Jump to SecurityCheck. | |
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View the equivalent code in;
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