David Kuder developed the Tiny SCSI emulator that can help breathe new life into old hardware.
The emulator is based on a Teensy 3.5 and uses a NCR 5380 SCSI controller chip. IT supports multiple device IDs, types, and logical unit numbers (LUNs). It fits in a compact 3.2″ x 1.6″ footprint and also has a 64×48 OLED display.
Code and Schematics for the project are available on Bitbucket.