A new haul - questions on TA81 and TA78

[Michael Sokolov]

Gooijen H <GOOI at oce.nl> wrote:

> The TA81 has connecting cables that *look like* SDI, but from the
> User's Guide I understand that it is not SDI, but HSC ...?

It's the tape version of SDI.  The drive ports of an HSC *are* SDI, but
HSCs support both disks and tapes there, while UDA50 and KDA50 controllers
usable with PDP-11s only support disks.  (It may be possible that they
have secret undocumented support for tapes, but no PDP-11 OS can support
that, it would take a very sophisticated VAX OS with a full SCA
implementation.)

MS