[Info-vax] OpenVMS 35th anniversary

[Johnny Billquist]

On 2012-10-04 02:51, glen herrmannsfeldt wrote:
> Rich Alderson <news at alderson.users.panix.com> wrote:
>
> (snip)
>>> HP OpenVMS will be celebrating its 35th anniversary on Oct 25th 2012.=20
>
>> Not be to curmudgeonly, but isn't that the 35th anniversary of the VAX-11/780,
>> which ran RSX-11M at customer sites until VMS was released sometime in 1978?
>
> Maybe they had version 0, or even version -1, running internally
> before it was ready for customers.
>
> If you want the OS and hardware ready at about the same time, you have
> to be able to run the OS under emulation until the hardware is ready.
>
> There are stories of running OS/360 emulated on 7090s. (It is easier to
> emulate 32 bit systems on 36 bit hosts than the other way around.)
>
> It would be interesting to know if there were VAX emulators
> running on PDP-10s before VAX hardware was available.

I don't think so. I know I read (somewhere) that they did VAX emulation 
on a PDP-11/70 before they had hardware running. Or atleast for selected 
parts of a VAX.

	Johnny