TRS-80 Model 16
700-2052 
TRS-XENIX Multi-User Operating System
v01.03.05

DREM Hard Drive emulator config and DSK files.
See https://www.drem.info

DRMX135.CFG
DRMX135.DSK
Clean installation of XENIX v01.03.05 on a Seagate ST4053
with Software Development System