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Routines |
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Resets bit 3 of the attribute of both halves of a door.
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| OpenDoorway | 38221 | LD A,(IX+5) | Fetch the attribute of the door. | |||||
| 38224 | AND %11110111 | Reset bit 3. | ||||||
| 38226 | LD (IX+5),A | Write it back. | ||||||
| 38229 | PUSH IX | Stash IX on the stack. | ||||||
| 38231 | CALL GetOtherDoorHalf | Call GetOtherDoorHalf to point IX at the other half of the door. | ||||||
| 38234 | LD A,(IX+5) | Fetch the attribute of the other half. | ||||||
| 38237 | AND %11110111 | Reset bit 3. | ||||||
| 38239 | LD (IX+5),A | Write it back. | ||||||
| 38242 | POP IX | Restore IX from the stack. | ||||||
| 38244 | RET | Return. | ||||||
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