How do I administer the Winter Chip?

Hint 1 of 12:

First of all, ignore what Eva says about giving you a signal and waiting.  If
you do the right things, Tex will automatically wait as necessary.

Hint 2 of 12:

The linkup computer is locked away.

Hint 3 of 12:

It's in the observatory in a locked wall panel.

Hint 4 of 12:

Use Eva's key to unlock the panel, and move the game to get to it.

Hint 5 of 12:

The main computer is hidden by a button, also in the observatory.