VT100 - FUN

Paul Koning paulkoning at comcast.net
Wed Nov 11 08:54:38 CST 2015

> On Nov 10, 2015, at 8:43 PM, rod <rodsmallwood52 at btinternet.com> wrote:
> Hi
> I always considered the VT05 to be art or sculpture.
> However DEC never produced anything else in the same style.

They did, actually, but it was a rather obscure product: the VT20.  That's a local editing terminal for Typeset-11, for newspaper production.  It consisted of two VT05 enclosures connected to an 11/05 controller.  The whole thing was connected to the main system (an 11/45 RSX11-D system) via a serial line.

I never saw one in action but there was one stored in the corner of the Typeset-11 development lab; by the time I got there (1978), it had been superseded by the VT71/t.  Same sort of idea, but a custom enclosure, and the controller was an LSI-11 inside that enclosure, responsible for just one display rather than two.

The display controller was some sort of display list engine, vaguely like the GT40 but text only.  The host would send the entire file to the terminal, and receive the updated file in response after the operator finished editing it.  Imagine a VTEDIT or Emacs-like editor, including programmable macro keys ("user defined keys") on your desktop.


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