* UpperROM has .e00 ot eFF file extension (hexa)
In r005.4, I added add another UpperROM set : .f00 to .fFF. If you press "space" during a reset_key ("page up" key), upperROM files used are *.f00 to *.fFF instead of *.e00 to *.eFF. *.eZZ is still used in both case.
=== DONE: Another disk selector ===