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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 | 954D | LD A,(IX+$05) | Fetch the attribute of the door. | |||||
| 9550 | AND %11110111 | Reset bit 3. | ||||||
| 9552 | LD (IX+$05),A | Write it back. | ||||||
| 9555 | PUSH IX | Stash IX on the stack. | ||||||
| 9557 | CALL GetOtherDoorHalf | Call GetOtherDoorHalf to point IX at the other half of the door. | ||||||
| 955A | LD A,(IX+$05) | Fetch the attribute of the other half. | ||||||
| 955D | AND %11110111 | Reset bit 3. | ||||||
| 955F | LD (IX+$05),A | Write it back. | ||||||
| 9562 | POP IX | Restore IX from the stack. | ||||||
| 9564 | RET | Return. | ||||||
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