27 Oct
2002
27 Oct
'02
9:04 a.m.
Curt,
On the 4000-200 on the far left side of the QBus slots
is
a slot with 2 connectors, one appears to be a standard
SCSI-1 connector and the other is an inverse SCSI-2 connector
(labels Bus 0) with a terminator on it that lights up on power
up.
The first one indeed is a SCSI connector. The second one is the
DSSI bus connector, connected to bus #0. It should be terminated
(with the lighted term) unless you have an external storage cab,
which then in turn has the term.
The SCSI connector, however, is NOT usable for what you're doing.
The BA440 box (which is what your cab sounds like) has provisions
for changing its internal (DSSI) bus into a SCSI bus, for example
to be used with the KFQSA controller. That way, you can use SCSI
devices with the VAX by mounting them in the old DSSI rails.
The VAX does _NOT_ have a SCSI controller by default; unless you
have something like a KFQSA, Dilog or Emulex SCSI-to-Qbus controller,
you can NOT use the RRD43.
Sorry to be the bringer of Bad Newz (tm)..
Cheers,
Fred