If you can't get a DAT tape to eject from the drive: dea-dskx for the DAT drive (cno 6)
and the hard drive (cno 1), then pull the card hot. When reinserting the card, hold the eject button
If your RMX port is locked up, try toggling the SYNC-ASYNC switch on the ADS processor card back
and forth a few times.
As I learn more little helpful "non-documented" tips I will try to post them here. If anyone else
has input please feel free to post. Dent