[Simh] vax vs. vax780

[Dan Foster]

Hot Diggety! Tim Pinkawa was rumored to have written:
> On 11/8/06, Bolhar-Nordenkampf Ferdinand <bol at adv.magwien.gv.at> wrote:
> > Is VMS V4 (V4.4 or V4.6) supported?
> 
> That's an interesting point. The vax780 simulator would (in theory) be
> able to run all versions of VMS, while the vax simulator would only be
> able to run MicroVAX-compatible versions of VMS.

vax780 can indeed run VMS V1.5 through V4.x for the VAX -- tested
firsthand.

I haven't tried V5-V7 with vax780, though HP says 11/780 support
officially ended with V6.2:

http://h71000.www7.hp.com/openvms/HW_SUPPORTCHART.HTML                          

I don't know if this means V7.x with the 11/780 is unsupported but works
or unsupported but doesn't work.

The website also says the MicroVAX 3900 (which is what SIMH also
emulates) minimum version is V5.1, maximum is whatever the current VAX
version is (V7.3).

Thanks to someone on this list, here's how V1.5 looks with SIMH. :)

% simh-vax780 vax.ini.15
    
    VAX780 simulator V3.6-1
    Logging to file "logs/vms015_001.log"
    Loading boot code from vmb.exe
    
    
      VAX/VMS Version 1.50 12-APR-1979 09:30
    
    
       OPCOM,  9-OCT-1979 18:10:30.85, LOGFILE INITIALIZED,
OPERATOR=_OPA0:
    
    $ ! 
    $ ! VAX/VMS system startup - Release 1
    $ !
    $ SHOW TIME
       9-OCT-1979 18:10:30
    $ SET NOVERIFY
    %MOUNT-I-MOUNTED, CONSOLE      mounted on _DXA1:
      Login quotas - Interactive limit=64, Current interactive value=0
      SYSTEM       job terminated at  9-OCT-1979 18:10:31.04
    
      Accounting information:
      Buffered I/O count:          139      Peak working set size:   100
      Direct I/O count:             38      Peak virtual size:       110
      Page faults:                 304      Mounted volumes:           1
      Elapsed CPU time:     0 00:00:00.12   Elapsed time:     0 00:00:00.18
    Username: SYSTEM
    Password: 
            Welcome to VAX/VMS Version 1.50

-Dan

P.S. A big thank you to the person on this mailing list whom helped me
locate early VMS installation media in a format suitable for SIMH use.