Have you tried <ctrl><alt><ins>?
That's what the key combo
to get into the ROM-based setup of the Zenith Z-248's used to be.
As it turns out, that key combo was pointed out to me the other day, and
yes, it does work. It drops you into some kind of ROM debugger, where one
of the features is a setup utility.
So now the Zenith has been saved from the scrap heap (as there were no
takers on it), and has been set to use the 3.5" 1.44 drive (and the 360k
5.25 was upped to a 1.2 5.25, not that I needed it, but I didn't have a
face plate that fit nicely in the hole, so I just used one of my many
spare 5.25 drives).
It is now happily collecting dust on my shelf of "good to use" computers
waiting for an interviewing job to call on it.
-chris
<http://www.mythtech.net>