Contact Sam Cruise: Routine at 701F

701F: Show or hide an icon in the icon panel

Used by the routine at 73E4.

Input
E	Attribute file address LSB

The main entry point is used to show an icon in the icon panel.

701F

LD A,$30

0x30=PAPER 6: INK 0

7021

JR $7025

This entry point is used by the routine at 73E4 to hide an icon in the icon panel.

7023

LD A,$36

0x36=PAPER 6: INK 6

This entry point is used by the routine at 7683 with A=6 (PAPER 0: INK 6) to show an icon for an object that can be picked up (by pressing 'G').

7025

LD D,$5A

Point DE at the attribute file address for the top-left tile of the icon

7027

LD (DE),A

Set the attributes for the top two tiles of the icon

7028

INC E

7029

LD (DE),A

702A

SET 6,E

Point DE at the attribute file address for the bottom-right tile of the icon

702C

RES 5,E

702E

LD (DE),A

Set the attributes for the bottom two tiles of the icon

702F

DEC E

7030

LD (DE),A

7031

RET