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Routines |
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Used by the routine at F2A8. Updates the play area graphics and screen refresh buffer (SRB) for a door so that it appears open.
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| F7CD | PUSH HL | Save the address of the door status flags | ||||||
| F7CE | LD A,L | A=0xF0-0xF9 | ||||||
| F7CF | SUB $46 | Point HL at the door knock status flags for the door (see 7FAA) | ||||||
| F7D1 | LD L,A | |||||||
| F7D2 | LD A,(HL) | Reset the door knock status flags | ||||||
| F7D3 | AND $3F | |||||||
| F7D5 | LD (HL),A | |||||||
| F7D6 | POP HL | Restore the address of the door status flags to HL | ||||||
| F7D7 | JP $F100 | Update the play area graphics and the SRB for the door | ||||||
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