I actually have the controller card, that's not the issue. I even have the Arcada Backup software disks, but they are built for Win95, and there is no discernible driver for DOS on there. Is there a generic SYS file that DOS uses for tape drives? Honestly, it's been ~20 years since I used it, so I don't remember how to set it up in the autoexec.bat or config.sys.