Storing and recalling screens in VT 320 emulation

From: Rakesh Peter (rax4ever_at_gmail.com)
Date: 03/26/05 

Date: 26 Mar 2005 07:39:36 -0800

Hello ppl..

I am working on supporting legacy systems and I've got a dumb terminal
which says it uses VT320 (or something VT) terminal emulation. When I
monitor the flow of data using serial spying, I find that only once
(initially) the main screens of the terminal are sent from the server
(vax/vms) and later when the particular screen is reqd., it sends some
control character to retrieve it.

The normal terminal emulation packages doesn't work with this. The
screen just jumps to corresponding position, without printing the
required screen behind.

What exactly are the specifications that are used to do this screen
recalling ?? I'm searchin the VT emulation manuals and I cudn't find
anything so far !

Any help is appreciated !!!

Regards..

Rakesh

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