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Routines |
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Used by the routine at 63191. Returns with the zero flag set if MR CREAK is near a blackboard that was last written on by ERIC.
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| 64016 | CALL 28968 | A=identifier of the blackboard nearest to CREAK | ||||||
| 64019 | CP 236 | Is CREAK on the top floor? | ||||||
| 64021 | JR NZ,64027 | Jump if not | ||||||
| 64023 | INC L | L=98 (which byte holds CREAK's x-coordinate) | ||||||
| 64024 | BIT 6,(HL) | Return with the zero flag reset if CREAK's x-coordinate is >= 64, i.e. he's standing at the doorway of the (blackboardless) Map Room (which never happens, because CREAK never teaches in that room) | ||||||
| 64026 | RET NZ | |||||||
| 64027 | INC A | DE=32749 (Reading Room blackboard) or 32751 (White Room blackboard) | ||||||
| 64028 | LD E,A | |||||||
| 64029 | LD D,127 | |||||||
| 64031 | LD A,(DE) | A=number of the character who last wrote on this board | ||||||
| 64032 | CP 172 | Set the zero flag if it was ERIC | ||||||
| 64034 | RET | |||||||
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