henk.gooijen at hotmail.com
Sat Sep 5 11:26:25 CDT 2015
From: william degnan
Sent: Saturday, September 05, 2015 5:40 PM
Subject: Re: Tu10 pdp11
Ok. I checked my tu10, it has the backplane, it is a master. I see where
it connects using the backplane cable to the pdp11. I never worked with a
TU10 before and I was looking to see if references to the tm11 were
"module/card" or backplane interface. I surprisingly found little
commentary or threads about the TU10 / TM11, other than DEC docs. I guess
these are not super common or people who have them have not often reached
out to the classic cmp community, that I could find in a search.
On Sep 5, 2015 3:37 AM, "Eric Smith" <spacewar at gmail.com> wrote:
> On Fri, Sep 4, 2015 at 6:14 PM, william degnan <billdegnan at gmail.com>
> > Reading docs on DEC TU10 for pdp 11 one makes a serial connection,
> > right?
> > Not sure because I found little about baud, etc.
> > I did not see any definitive controller card for UNIBUS pdp 11. Maybe I
> > missing something..can anyone share experiences?
> A TU10 master drive contains electronics[*] which allows it to be
> interfaced to a PDP-11 TM11 tape control. Said electronics is probably
> what's known as a formatter, though I haven't studied the TU10 in
> detail so I'm not 100% certain.
> A master TU10 can be used with up to seven TU10, TU20, TU30, or TU40
> slave transports.
> The TM11 controller has its own backplane, and may be mounted in the
> TU10 master drive. It connects to PDP-11 using the usual BC11-A Unibus
I may be wrong, but then again, this might be useful ...
The TE16 is nearly (?) identical to the TU10. My guess is that the TU10
is just a bit older. My TE16 has a MASSBUS interface, so I cannot
compare on that side. However, the TE16 also is either master or slave.
And to a master can be connected 7 slaves. The interconnection is three
40-wire flat cables.
ISTR that the interface for the TU10 is a 4-slot backplane, and I
think it is called TMB11. The TMB11 is also used to hook up the TS03.
So you need the 4-slot backplane in the master tape drive, and the
4-slot TMB11 backplane in the CPU or expansion box.
This is from (old) memory cells, so I could be wrong!
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