Andrew Grillet wrote in a message to Mike Byrne:

 AG> AFAIK, from inside the DD you can't do much in the way of
 AG> screen writes etc without a mountain of hard work. Am I
 AG> wrong? Is there are DevHelp to query user? will it work on
 AG> the kind of sick system that requires C-A-D? It would be sad
 AG> if I made a reboot impossible.

It can be done by adding in a new device driver.  WatchCat is an example of
a program that has exactly this kind of capability:

WCAT11.ZIP    121K  1-31-94  WatchCat is a program for OS/2 2.x that makes it
                             possible to recover from system hangs that block
                             keyboard and mouse input. Version 1.1.
 
-- Mike


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