Reading some websites yesterday there was also a bug
in early versions of
the BIOS that meant certain slots in the expander couldn't be used at
particular ROM addresses, which must've made installing new cards a fun task
if you didn't know that :)
Impossible!... All the slots in the expansion unit are the same (they're
bussed pin-pin). There is no way that some cards will work in some slots
and not others.
-tony