[Info-vax] VAX/VMS V1, V1.5 or anything older than V5

[Paul Sture]

On Tue, 29 May 2012 15:31:59 -0500, Bob Koehler wrote:

> In article <4fc3865d$0$6911$e4fe514c at news2.news.xs4all.nl>, MG
> <marcogbNO at SPAMxs4all.nl> writes:
>> Is VAX/VMS V1 still available, does someone have it backed up?
>> Secondly, will it work under SimH?
>> 
>> I'd love to try a really old version of VMS, for the sake of
>> comparison.  I've recently been reading the V1.5 documents, which I
>> found in the excellent bitsavers.org archive.  I'm very impressed with
>> how complete and fully-featured VMS already was back then, at such an
>> early stage.
> 
>    VMS 1 ran on the 11/780, and SIMH does emulate the 11/780.  What is
>    not clear to me is whether SIMH's 11/780 includes compatability mode.
> 
>    Much of VMS 1 was RSX utilities running in compatability mode.
> 
>    If SIMH's 11/780 does not include compatability mode, it should be
>    possible, but possibly not trivial, to add it from SIMH' PDP-11
>    simulation.

I don't remember having any problems with 1.5 on SimH.

But I think my first attempt was to run it against the VAX 3900 
executable rather than the 780 one, and naturally that failed.

-- 
Paul Sture