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RE: KA410 Boot Failure With TKZ-50



>> Reno or dot something or other

> 4.4-Reno is not NetBSD 1.anything.  I _think_ Reno came before all NetBSD
versions, but I wasn't involved with it that far back, and I don't recall
what I've read of the history in enough detail.  But I _think_ Reno was
ancestral to 4.4-Lite, and I _think_ NetBSD was derived from 4.4-Lite (via
the Jolitzes' work).  But I could easily be wrong about either or both of
those.

Yes, some ancient dist -- I was looking at docs for creating bootable tapes
that far back, because of the relation between systems -- Berkeley
Networking Release 2 (Net/2), 4.4BSD-Lite, and 4.4BSD-Lite.  However, I am
unable to find the link in my history.  I think the last (NetBSD) version I
tried was tk50-file1-13A -- not that I tried anything earlier.


>> It's probably the SCSI layer.  Do I implement TMSCP(sp?)

> TMSCP is not SCSI.  TMSCP is the tuned-for-tapes version of MSCP, DEC's
Mass Storage Control Protocol.  MSCP is a protocol run between hosts and
disks; TMSCP is an adaptation of it designed for tapes.

> Given the questions you were asking, I would say it is highly unlikely you
will need to implement TMSCP.  The only cases I can see where you have a
need to implement TMSCP are (1) building an emulator of some sort, (2)
writing host code to speak to DEC tapes, or (3) building a glue layer, such
as a board that speaks TMSCP to the host and SCSI to a drive.  It does not
strike me as likely that you would be taking on any of those while still
having occasion to ask what you were asking.

I wasn't asking if I should implement TMSCP, but rather whether my hardware
and firmware do.  I have a hunch that booting from MUA0 is breaking because
of the SCSI board in the TKZ-50, but I can't be more specific and could
easily be wrong -- it's just a hunch.

-- KRJ/NODOMAIN.NET

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