| Routines

28703: Show or hide an icon in the icon panel

Used by the routine at 29668.
Input
E | Attribute file address LSB
The main entry point is used to show an icon in the icon panel.
28703 | LD A,48 | 48=PAPER 6: INK 0
28705 | JR 28709 |
This entry point is used by the routine at 29668 to hide an icon in the icon panel.
28707 | LD A,54 | 54=PAPER 6: INK 6
This entry point is used by the routine at 30339 with A=6 (PAPER 0: INK 6) to show an icon for an object that can be picked up (by pressing 'G').
28709 | LD D,90 | Point DE at the attribute file address for the top-left tile of the icon
28711 | LD (DE),A | Set the attributes for the top two tiles of the icon
28712 | INC E
28713 | LD (DE),A
28714 | SET 6,E | Point DE at the attribute file address for the bottom-right tile of the icon
28716 | RES 5,E
28718 | LD (DE),A | Set the attributes for the bottom two tiles of the icon
28719 | DEC E
28720 | LD (DE),A
28721 | RET |