FYI, the floppy isn't an IDE device. It's a raw SWIM device - it talks directly to the floppy controller.
I don't know if this will help you or not, but there's a description of most of the 5300's ICs in my FAQ. <http://www.alksoft.com/5300_FAQ/FAQ_2.9.php#298>
There's also a few pictures (in order of increasing resolution) that I've annotated here:
<http://www.alksoft.com/5300_stuff/5300_Inside_Out.php> (various)
here:
<http://www.alksoft.com/5300_stuff/images/large_bare_mobo.jpg> (600 kB)
and here:
<http://www.alksoft.com/projects/scans.html> (various up to 2.8 MB)
But according to the dev notes, the 3400 has the O'Hare (cough - a busier IC than the Heathrow). O'Hare controls IDE/ATA, floppy, and a heap of other stuff.
So it so happens that the floppy controller is also the same IC as the IDE controller, but they are different logic blocks.
Good luck! Drew
Why do I have the feeling OHare is one of the BGA ICs ?
I can try a floppy boot if I can find a boot floppy; its been a while.
Mad Dog
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