[Info-vax] What are the earliest DEC operating systems you worked with ?

[Paul Hardy]

Simon Clubley <clubley at remove_me.eisner.decus.org-Earth.UFP> wrote:
> What are the earliest DEC operating systems you worked with ?

The earliest DEC machine that I used in 1973 had no operating system and no
disks - it was the PDP7 that had paper tape and a link to the Cambridge
Titan. It was ’fun’ programming it in Fortran on paper tape!

The first machine with an operating system in 1975 was a PDP15, again with
no disks, but had 2 DECtapes. The OS was KM15 Keyboard Monitor, then
Foreground/Background - two users! Programming in BCPL. 

Next was PDP11/45 under RSX/11M in 1975. This had two RL05 10MB disks, and
about 5 users programming in Fortran and Macro-11. 

Then VAX-11/780 under VMS 1.5 in 1979, and many other VAX and MicroVAX
models up to the 1990s. 

Onward to Alpha AXP in 1993 on OpenVMS AXP 1.0, and through with other
Alphas to 2003. 

Then I shifted away from VMS, only returning using SimH for industrial
archaeology more recently. 

I’ve never touched an Itanium machine.

-- 
Paul at the paulhardy.net domain