If I just switch this old Power Macintosh 5500/225 on, I get the "where's
a bootable MacOS disk" query screen.
If I press alt-apple-o-f this screen doesn't appear, and all is dark.
I conclude that I am in openfirmware ?
At this point, if I type "bye" I would expect to get back to the query
screen, but nothing happens. "reset-all" doesn't help either.

Does this mean that ttya or somesuch suddenly becomes the input-device?
I thought the default was always kbd for input. (and something strange
for output).

What am I missing? (other than a serial cable ;-) )

Cheers,

Patrick