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From: poulson@cs.widener.edu (Joshua Poulson)
Newsgroups: comp.sys.cdc
Subject: Re: WYSE Terminal Emulation
Message-ID: <1MQ+=3C@cs.widener.edu>
Date: 15 May 91 15:08:15 GMT
References: <12J+85D@cs.widener.edu> <33254@shamash.cdc.com>
Organization: Widener U. Computing Services
Lines: 36
Nntp-Posting-Host: dalembert.cs.widener.edu

In article <33254@shamash.cdc.com> rrr@svl.cdc.com writes:
>In <12J+85D@cs.widener.edu> poulson@cs.widener.edu (Joshua Poulson) writes:
>>Whenever a user with a WYSE 50 terminal logs into our Cyber (running
>>L750AB NOS/VE) at the end of the user prolog a set of strange and
>>unusual characters are sent to the terminal.  On normal terminals, for
>>example PC_Connect_20's, these characters are not seen and probably set
>>up some features on the terminal.  On WYSE 50's this causes the terminal
>>to have a soft lockup.  (It can be removed by resetting the terminal
>>without losing the connection).
>
>My guess is that this sequence of junk characters is due to an
>enable_command_redo in the prolog file. Redo activates at the
>very end of the prolog and sends the redo_screen_mode and
>redo_line_mode sequences from the TDU to initialize the terminal
>in case it has downline loaded function keys or a keypad that must
>be activated. Check the TDU that you are using to see what sequences
>are specified to be sent. They must not be right for the Wyse 50.
>You can remove the enable_command_redo from the prolog to verify that
>this is the problem.

It was indeed enable_command_redo that caused the problem.  Right now
I'm trying to get the SET_TERMINAL_MODEL program from CDC1.CC.LEHIGH.EDU
to recognize the differences between WYSE_50, VT100, and all the
PC_CONNECT's.  Once this works well I'll put them both back in the
system prolog.  Also, support found a TDU (for NOS, but it's
convertible) for the WYSE 50.

I would like to thank all the people that replied to me on this one...
quite a few were from CDC... ;-)

Thanks again,
-- 
Joshua R. Poulson                          [Joshua.R.Poulson@cyber.Widener.EDU]
"I speak only for myself, okay?"           [poulson@cs.Widener.EDU]
"It is better to play the game and lose than it is to argue about the
instructions." (Me, 1991)