what was VMS/OpenVMS written in?

[Zane H. Healy]

On Wed, 1 Dec 2010, Tony Duell wrote:

> POS (PERQ OS), wirtten in Pascal (of course). PNX (PERQ unix) was not
> suprisingly written in C, though

Just how many "POS" OS's where there?  I wasn't aware of this one, but knew
about P/OS (stripped RSX-11 for the DEC Professional), and pOS for the Amiga
in the late 90's.

> Actually, What is an OS? Do the BASIC interpretters with buit-in
> keyboasrd, video display and mass-storage handling count as OSes? I could
> certainly argue they are...

I would definitely argue that BASIC in my Commodore 8-bit systems is an OS!

Zane