[Simh] EXT : VAX SDL support?

[Paul Koning]

> On Mar 9, 2017, at 7:20 PM, Hittner, David T [US] (MS) <david.hittner at ngc.com> wrote:
> 
> The Qbus-based VAXen support the QVSS (black-n-white) video module cards, which were the basis of the original VaxStation I and were also compatible with VaxStation II's, III's, and 4000's. The SIMH QVSS uses SDL for visualization.
> 
> This is a native DecWindows interface.

The eary VAXstations could also run VAXwindows, which predates DECwindows and isn't based on X.  I used it at one time.  It was ok, but rather slow.  It's not a client-server system as X is.  I wonder if any copies of the software still exist.

	paul