I have a pretty good command of the beagle bone black and use it extensively for projects.
I started programing back in the late 1980s using Mac Rail and Nubus cards each with 50 addressable GPIO.
I also have three of the Buzzz ADB I/O devices I used back in the 90s for home automation...
I vaguely remember that there is a way to either cut or twist the cable to enable the use of two internal floppies on an se/30 MB.
Anyone have the info ?
I recently got an SCSI2SD and now have room to put another floppy in the case.