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

[Crabs]

Let see......got a TK50 backup tape somewhere around here.....
Ah! Here it is. *Wipes the dust and cobwebs off of a plastic cube*
RSX11M+ V3.0
Dated 4/12/86.
Came out of a PDP 11-73.
The backups for the PDP 11-23's that I used to have were on nine track tape reels, and I dumped them many many years ago.
I tickled the keys of a VT100 terminal attached to a PDP11-23 for the very first time in the summer of 1980.
Since then, it's been a blur of upgrades both software and hardware, from PDP/RSX to VAX/VMS ending with Alpha/OpenVMS.
Pretty much all flavors included there in.
I've never Itaniumed or VSI'd......and likely won't. Ever.
The Layered Product ("Software" to all the Windows Kiddies today) that I use on my Mass Spectrometers was never certified on anything newer than a DS10 running OpenVMS 8.4.

'Crabs