[TUHS] DECtapes under the UNIX room floor

[Clem Cole via TUHS]

On Wed, May 6, 2026 at 2:13 PM Phil Budne via TUHS <tuhs at tuhs.org> wrote:

> I wonder: Was the VAX 11/780 the first DEC system that came with an
> RTC/TOY clock out of the box?
>
Sort of.  It was not battery-backed up, which is why both VMS and UNIX
require the time to be set.  IIRC first Vaxen to have a battery to cover
the TOY on a power outage,  were the Mayflower machines  (uVax and
VaxStation systems).  The J-11-based systems had a TOY, as did the 23+ (not
the 23).

FWIW: I've been trying to get Supnik to allow support for them into SIMH
and then set via the host.  Bob's solution is when you start SIMH, it
assume is was from power-off, which is supported by all OS's on all models
of both.