maybe Im sniffing some of the same glue as lou_dias and his gamecube idea;
I vaguely remember altering the mountlist for device RAM:
but that was way back in my ICD adram540 1.3 days
on an a500 (never used an a1000)
somehow you make a RAD-alike thing
similar to the following
http://www.iol.ie/~ecarroll/a590floppy.html