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From: preetham@ra.src.umd.edu (Preetham Gopalaswamy)
Newsgroups: comp.sys.hp
Subject: Simulating a prompt.
Message-ID: <24682@mimsy.umd.edu>
Date: 31 May 90 21:28:05 GMT
Sender: news@mimsy.umd.edu
Reply-To: preetham@ra.src.umd.edu (Preetham Gopalaswamy)
Organization: Neural Systems Lab., Univ. of Maryland, College Park, MD 20742
Lines: 10

I have written a front end program for a device which is connected to our HP835
by an RS232 link.  I would like this program to echo a prompt (similar to the
c-shell prompt).  The problem that I am having is that it is possible by using
the backspace key to erase the prompt (since I currently use the C command
"printf" to echo the prompt each time).  Is there any way by which I can prevent
this and not have the cursor go back over the prompt ?  I do not face this
problem with my shell prompt and would like to have the same thing be true for
this simulated prompt.  I would appreciate any help I can get.  Thanks.

							Preetham Gopalaswamy