SCSI Questions (Was: "Re: Purchased a Microvax 3800")

Christian Gauger-Cosgrove captainkirk359 at
Mon Dec 7 13:36:18 CST 2015

On 7 December 2015 at 14:29, Johnny Billquist <bqt at> wrote:
> I think all (modern PDP-11) OSes can install from TMSCP tapes. RSTS/E is
> more picky than some others, though, if I remember right...
Yes, RSTS/E installs from TMSCP just fine (as can RSX-11/M+); I know
that in simh you can bring up Ultrix-11 3.1 only on TMSCP
(specifically a TK50), at least if you want all of the packages to
install. I've installed RSTS/E 10.1-L from MASSBUS, TS11, TM11, and
TMSCP in my various experimentation with emulation, it really doesn't
care what the tape is as long as your SYSGEN device is consistent.

> As for your actual question, that is outside the scope of the PDP-11. You
> are asking if there is some SCSI storage, that physically looks like a CF
> card (or so), but logically on the SCSI bus looks like a tape.
Yeah, probably my phrasing or organization was a bit off, but what I
meant wasn't with regards to just the PDP-11, but with regards to a
general device that looks like a SCSI tape device. Since such a SCSI
device could, like you said, work on a PDP-11, modern x86-64 (if the
SCSI bus is right), VAX, Alpha, et cetera.

Christian M. Gauger-Cosgrove
Contact information available upon request.

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