I was surprised to see that!  Very good news!!  Good job!  I will try that soon.

For 8250/8350, you need two MP processors.  Does vax820 emulate two MP 
processors like VAX-11/782?

Tim

-----Original Message-----
From: Simh <simh-boun...@trailing-edge.com> On Behalf Of Matt Burke
Sent: Saturday, April 6, 2019 1:21 PM
To: Simh Trailing-Edge Mailing List <simh@trailing-edge.com>
Subject: [Simh] VAX 8200/8250

Here is a new simulator for the VAX 8200/8250 systems. Most of the key features 
are there including the DWBUA BI-Unibus adapter which allows all the existing 
Unibus devices to be used. The console RX50 is also implemented.

The console processor is not simulated so it uses the same VMB trick as the 
VAX-11/7xx simulators i.e. you boot directly from a device "boot rq0" rather 
than "boot cpu".

You can get the code from:

https://github.com/9track/simh/tree/vax820

And Windows executable from:

http://www.9track.net/simh/vax820

Please try it out and let me know how you get on.


Matt
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