[Simh] NVAX/CVAX-based VAXstation emulation?

[Larry Baker]

Johnny's right.  I have the Brunner, Ed., VAX Architecture Reference Manual, Second Edition © 1987, 1991.  Check out Chapter 11, Architectural Subsetting and Appendix B, Implementation Dependencies.

I also looked over Levy and Eckhouse, Computer Programming and Architecture: The VAX-11 and Bell, et al., Computer Engineering, a DEC View of Hardware Systems Design.  Both of those are too old to include anything beyond the VAX-11/780.

Larry Baker
US Geological Survey
650-329-5608
baker at usgs.gov



> On 12 Apr 2019, at 9:00:01 AM, simh-request at trailing-edge.com wrote:
> 
> ------------------------------
> 
> Message: 4
> Date: Fri, 12 Apr 2019 01:46:34 +0200
> From: Johnny Billquist <bqt at softjar.se <mailto:bqt at softjar.se>>
> To: simh at trailing-edge.com <mailto:simh at trailing-edge.com>
> Subject: Re: [Simh] NVAX/CVAX-based VAXstation emulation?
> Message-ID: <70551703-85a0-640d-e4b3-0d7c634477a1 at softjar.se <mailto:70551703-85a0-640d-e4b3-0d7c634477a1 at softjar.se>>
> Content-Type: text/plain; charset=utf-8; format=flowed
> 
> On 2019-04-12 01:39, Chris Hanson wrote:
>> On Apr 5, 2019, at 1:00 PM, Paul (lists) Hardy <paulhardy2 at btinternet.com <mailto:paulhardy2 at btinternet.com>> wrote:
>>> 
>>> Matt Burke has implemented the QDSS VCB02 Dragon colour graphics device in his side branch of SimH, as a VAXstation II. I’ve tried a prototype and it seems to work well, up to the limits of VS2 memory limits etc.
>>> 
>>> I believe he intends to merge it into mainstream SimH in due course, as his time allows. If anyone wants to help, he can be contacted through 9track.net <http://9track.net/>.
>> 
>> Nice!
>> 
>> Where would one go about finding architecture documentation on the differences between the various VAX iterations including CVAX, NVAX, SOC, and so on? I assume there are some, even if they’re more tuning-related than truly architectural.
> 
> I'm trying to remember if that is in an appendix of the VAX Architecture 
> Reference Manual.
> 
>   Johnny
> 
> -- 
> Johnny Billquist                  || "I'm on a bus
>                                   ||  on a psychedelic trip
> email: bqt at softjar.se <mailto:bqt at softjar.se>             ||  Reading murder books
> pdp is alive!                     ||  tryin' to stay hip" - B. Idol
> 
> 

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