| Game status buffer

7FF0: Door status flags

Used by the routines at 76BC, F144, F293 and F2A8. In each flag byte here, bits 0-2 hold the door close delay timer (0 if the door is shut), and the set bit (if any) in bits 3-7 indicates the key that is required to unlock the door:
Bit | Key
--- | ---
3 | Key to no. 74
4 | Key to no. 31
5 | Key to no. 27
6 | Key to no. 15
7 | Key to no. 19
7FF0 | DEFB $00 | Shop at the far left of town
7FF1 | DEFB $00 | Right-hand shop under the apartments next to no. 74
7FF2 | DEFB $08 | No. 74
7FF3 | DEFB $10 | No. 31
7FF4 | DEFB $20 | No. 27
7FF5 | DEFB $80 | No. 19
7FF6 | DEFB $00 | Shop under no. 17
7FF7 | DEFB $00 | No. 17
7FF8 | DEFB $00 | Shop under no. 15
7FF9 | DEFB $40 | No. 15