Kbase Article of the Week: Apple Adjustable Keyboard & Compatibility with A/UX 3.x →

Apple Support:

Is the Apple Adjustable Keyboard compatible with A/UX 3.x?

No, the Apple Adjustable Keyboard does not work completely with A/UX
3.0 or 3.0.1.

Because the CommToolbox tool(s) are built into the kernal with the keyboard
IDs, some of the keys, such as arrow keys and ‘~’, key do not
respond with the same ANSI escape sequences as they do in CommandShell.

The problem has been reported and is known to A/UX engineering.