HP NonStop G-Series - Manual (Page 315)

EDIT VS Error Messages
D–2 058061 Tandem Computers Incorporated
STACK DUMP ...
See Procedure F in Appendix E for information on how to recover from this
error.
TRAP ...
See Procedure A in Appendix E for information on how to recover from this
error.
The terminal disconnects from phone
See Procedure A in Appendix E for information on how to recover from this
error.
The text on your screen disappears and
all you see is a command interpreter.
See Procedure B in Appendix E for information on how to recover from this
error.
The text on your screen disappears and the
herringbone pattern (<<<<<<<<<) appears.
See Procedure D in Appendix E for information on how to recover from this
error.