Using a 1.2M 5.25" floppy drive with AIX/PS2 and DOS Merge

[Eliot Lim]

I'm trying to get AIX/PS2 to talk to a 4869 1.2M 5.25 inch floppy disk
drive.  The word from IBM is that this device is not supported.  I 
pursued this a bit further, asking if the device could be directly 
attached to DOS Merge (where it would be put to use most anyway) since
I have device drivers for it in DOS.  I was told to make an entry to the
dosdev file and after that I was able to get DOS Merge to talk to the
drive.  However, I am unable to read or write to it.  Symptoms include
messages like "Divide overflow", "File allocation table bad" (or something
like that) and a total hang of AIX.  Since IBM does not officially
support this, I'm turning to the net for help.  It seems like I'm getting
real close to getting it to work but need to tweak a little bit more.
Anybody (Locus?) have any tips?

Thanks in advance.

Eliot Lim
University of Washington.
e-mail: eliot at blake.acs.washington.edu