HP 3000 Manuals

MPE/iX Quick Reference Guide

TERMDSM 

Use the TERMDSM tool to diagnose, dump, and reset logical devices, ports,
and data communications and terminal controllers (DTCs).  TERMDSM also
performs status checks of ports and DTC's.

     SYSDIAG 
     DUI > RUN TERMDSM 

MPE/iX 5.0 Documentation