Hi

That first link demonstrates that everything other than the floppy controller
may be disabled.

From looking at the photos, there appears to be no obvious way to disable
that FDC, however, looking at the data-sheet for the device:
http://www.datasheetcatalog.com/datasheets_pd … /3/UM8397.shtml
we can see from the block diagram that if DRIVE GROUP SELECT (pin 29) on the UM8397
FDC is shorted to ground (it is currently pulled up) then the device can
be re-assigned as a secondary FDC controller with alternate I/O addresses.

This appears to be your best bet.

Bye

Thanks sklawz

my problem is exactly what you described - everything can be disabled via jumpers EXCEPT the the floppy controller that has the conflicting I/O range 🙁
So it seems I must get medieval on that UMC chip, after all...

hi

if you can confirm that DRIVE GROUP SELECT is simply pulled high using
that resistor pack in the bottom left (the red thing) then you can simply
just ground the pin with a wire, a very simple operation and easily
reverted later.

bye