[Info-vax] Creating an open source version of VMS, was: Re: OpenVMS Hobbyist Notification

[Arne Vajhøj]

On 3/10/2020 5:41 PM, Dave Froble wrote:
> On 3/10/2020 9:57 AM, Bill Gunshannon wrote:
>> On 3/10/20 9:21 AM, Simon Clubley wrote:
>>> Something that did occur to me:
>>>
>>> I wonder, if someone tried to create an open source version of VMS
>>> from public documentation only, if VSI would somehow try to suppress
>>> development of it.

>> It was tried more than a decade ago.  How far it got and how
>> successful it was should be obvious by this point.  I have
>> often thought about a clones for the PDP-11 OSes which are
>> much simpler and have never gotten anywhere on that either.
> 
> First you'd need a design, then it's simply a matter of coding.
> 
> Maybe I don't have the "right attitude".  At this point in my life I can 
> use VMS for "real work" and WEENDOZE for email and browsing.  I don't 
> have the drive for more.  Aviation is much more fun.

Yes. Design + coding.

20 million lines of code => more than 20000 man months of effort

:-)

Arne