I have had a few in the past but I only have a 9610 right now. Just got it
a couple weeks ago and have not tested it yet.
Dan
>I'm taking a quick survey of who among us uses (or
>at least owns) Kennedy 9x00 series tape drives.
>
>I do and I know that some others do (e.g. John
> <jpl15(a)netcom.com>).
>
>Anyone else fit this description?
>
>
>Jon
>
Well, my first TRW was a bit of a wash (literally). It rained, and
apparently was a pathetic showing. That aside, I managed to pick up an
Atari 1027 LQ printer for $8, *brand new* (stickers, still covering the
paper slot) in box with manuals, and a Sparc 1 with 24megs of RAM (no HD)
for $15 in great shape (even has the sbus covers!).
Nice brunch at Coco's after with John and Marvin...
Aaron
>I'm taking a quick survey of who among us uses (or
>at least owns) Kennedy 9x00 series tape drives.
>
>I do and I know that some others do (e.g. John
> <jpl15(a)netcom.com>).
>
>Anyone else fit this description?
In the past, I had numerous Kennedy 9100's, a few
9300's, and some other 9000-series models (generally
the "others" were swing-arms, not vacuum column.)
I still have an assortment of common spare cards
(not too surprising, considering I lived a few
miles from Kennedy's homes in Altadena and Monrovia)
and numerous manuals.
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
or you can hold down the shift key as soon as you get the happy mac icon. that
will disable all extensions.
> > When ever I boot, before the Finder comes up, there's about 5 icons In the
> > lower left-hand corner. I know that one is MS Mail, and the other is for
> a
> > network. I'm not sure what the other icons are for. I'd like to get rid
> of
> > these programs (extensions?) that are running in the background, since
all
> > they do is eat up memory. I can't access them after Finder opens, and
> > nothing happens when I click on them before it opens.
> >
> > Any suggestions?
>
On Nov 28, 11:40, Christian Fandt wrote:
> >> > BL-T540B-M1 CZUFDB1 USER TESTS
> >> > BL-T541B-M1 CZXD1B1 FIELD SERVICE TESTS 1
> >> > BL-T542B-MC CZXD2B0 FIELD SERVICE TESTS 2
> >> > BL-T565B-MC CZXD3B0 FIELD SERVICE TESTS 3
> >> > BL-T583B-MC CZXD4B0 FIELD SERVICE TESTS 4
To which Pete replied:
> >They are indeed XXDP disks. They're the field service set for a
> >microPDP-11/23+. They contain XXDP Ver.2 plus relevant disgnostics, the
> >User Tests disks has the XXDP utilities and confidence test, Tests 1
has
> >object files and some utilities, Tests 2 has KDF11/BDV11/DLV11J/etc
tests,
> >Tests 3 has less-frequently-used interface tests, Tests 4 has other tape
> >and disk tests.
> I have no documentation on these disks, therefore, a few questions for
you
> and the others:
>
> ** Will the disks still work with the 11/73 and the third-party disk
> controller?
They'll work with the processor; they'll work with the the 3rd-party disk
so long as it emulates an RX50 with MSCP protocol.
> ** Is there an online index or something where you looked up those 'CZ'
> part numbers or do you have the user's manual or same software in your
> library to find the info above? (i.e., How did you know what they were
and
> how can I find the same?)
I have the same set (and a lot of other XXDP/XXDP+ files), and I have
listings and notes from DEC maintenance courses.
> ** Any online manuals for these diagnostics? Or, anybody willing to sell
a
> xerographic copy of them to me?
There were some manuals on microfiche; I have course notes on paper for
XXDP/XXDP+ and my own notes for XXDP Version 2 (I think that's what it was
called; some people referred to it as XXDP++ but that wasn't what DEC
called it) as on those disks.
There's a key to the names. For the older versions:
Hxmnrp.SYS is a system file: H means SYSTEM, x=M,D,U,S,Q for Monitor,
Decice Driver, Utility, Supervisor, or miscellaneous ; mn is the device
mnemonic for the medium supported; rp is the revision and patch level.
tmnirp.BI? is a diagnostic program;
t processor type, eg V or Z
mn device mnemonic, eg RQ
i program identifier, eg C
rp revision and patch level, eg B2
? is N or C (BIN=binary, BIC=relocatable binary)
Thus ZRQCH0.BIC is for any processor, using an RQDX controller, third
diagnostic of the set (this one happens to be a disk formatter, but you
would only know that if you knew what was in the set), eight version, never
patched.
There are some special mnemonics:
DI directory utility
SU setup utility
AA XXDP supervisor file
AB PT/AMS supervisor file
SA User manual
Apart from that, most of the mnemonics are simliar to the letters of the
device name (eg RQ for RQDX, MR for MR11/MRV11, DL for DL11/DLV11, etc) but
usually not the standard DEC device driver mnemonics.
Dtirp.BIN is a Unibus test; t is the test type, rest as above, except
0 instruction test
1 adressing test
6 AA11/VT06/LAB11 test
8 Unibus test
The common processor type letters for QBus are
J 11/23, 11/24
V 11/03
Z any processor
If I can find the source files, I'll put machine-readable notes on my web
pages (probablyt as PostScript). That is mostly XXDP V2 stuff. I *might*
have some machine-readble XXDP+ notes; if I can find any I put them up too.
I'll post a note to the list if and when...
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
< Actually, if you set the azimuth of the replay head to be the same as th
< recording head, you do improve the signal and the HF response. It doesn'
Not much at all. We are talking halftrack heads or wider and you get
phase cancelation if the gap is not perpendicular to the tape travel
on record. if the play back head is narrower say using a stereo
playback or one of the quad decks then you can tweek some but it still
only buys you a little.
Keep in mind that impats the upper limit of the HF response and most
tape systems were designed to stay way clear of that. The best upper
freqency response you could count on was 9-10khz from your 35-50USD
portable that was sold for or commonly used. Most modulations schemes
were either modem high pair (~2200hz) or phase encoded data (FM)
if you FM data using a data rate of TARBEL (187char/SEC) you were using
tones that were around 3000hz and 1500hz. TRS80 was in the same range.
So the actual bandwidth needed was far less than 5khz. Kansas CITY
format was exactly 8cycles of 2400 or 4cyles of 1200 for one or zero.
FYI I droped using audio cassette save for when I needed to get some neat
software from one format to mine. I went direct saturation where the
NS or SN polar flux change carried the information. The same heads at
audio that might work at 9khz audio did respectable 9600 baud using FM
encoding. LAter I would find some low impedence heads that would allow
me to hit a solid 1600frpi (800 bits/inch). This fixed some of the ills
that plague audio schemes.
< become perfect, but it does get better. VCRs (certainly UK VHS ones) use
< this trick to reduce crosstalk between adjacent video tracks (which are
< read by different heads on the head drum) and to allow a stereo audio
< signal to be recorded under the video track and then replayed by a
< separate head at a different azimuth setting.
Different world and heads. Heical scan systems the path across the tape
is different from linear travel and since the tape effectively moves in
two directions operation is different than a portable audio cassette.
Allison
No I believe OBM was correct: Obsolete Business Machine (of couse this is
spacific to the jr;)
Francois
-------------------------------------------------------------
Visit the desperately in need of update
Sanctuary at: http://www.pclink.com/fauradon/
>Max,
> OBM is supposed to be IBM. I forgot to check my spelling before
sending.
> John
>
>John Amirault wrote:
>
On Nov 22, 14:34, Kevin McQuiggin wrote:
> Christian Fandt wrote:
> Subject: Re: ID these DEC floppy disks?
> Looks like some XXDP diagnostics, but let's see what Tim and others have
> to say, to be sure.
> > In that heap of goodies I'm keeping from that DEC Haul back in the
summer I
> > found a DEC 5.25" floppy disk package containing five floppies of the
> > following:
> >
> > BL-T540B-M1 CZUFDB1 USER TESTS
> > BL-T541B-M1 CZXD1B1 FIELD SERVICE TESTS 1
> > BL-T542B-MC CZXD2B0 FIELD SERVICE TESTS 2
> > BL-T565B-MC CZXD3B0 FIELD SERVICE TESTS 3
> > BL-T583B-MC CZXD4B0 FIELD SERVICE TESTS 4
> >
> > All evidently are diagnostic tests for some sort of DEC machine which
uses
> > a 5.25" floppy drive. Could anyone identify which machine given the
above
> > info?
They are indeed XXDP disks. They're the field service set for a
microPDP-11/23+. They contain XXDP Ver.2 plus relevant disgnostics, the
User Tests disks has the XXDP utilities and confidence test, Tests 1 has
object files and some utilities, Tests 2 has KDF11/BDV11/DLV11J/etc tests,
Tests 3 has less-frequently-used interface tests, Tests 4 has other tape
and disk tests.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
classiccmp(a)u.washington.edu wrote:
>
> Forgot to mention in my find was a cartridge titled
> "Mach 128" its by Access software inc..
> Obviously for the C-128, but don't know what it does..
> Has a switch on top and a reset button? on it..
> Anyone ever seen this Cart before ?
> Phil...
Probably sonthing simimluar to mach speed for the C=64. I helps load
disks faster. Verry useful application. It doesn't work however with
copy software.
Charles
A while back someone asked about the famous World Power Systems scam.
While I don't have the whole story, I've put a little bit of information
and scans of some of the advertisments from the April 1979 issue of Byte
on a web page:
http://www.brouhaha.com/~eric/retrocomputing/wps/
