On Wed, 14 Jan 2004 "Fred N. van Kempen" <waltje(a)pdp11.nl> wrote:
> On Tue, 13 Jan 2004, Zane H. Healy wrote:
>
> > Interesting.... BTW, the DDS1 drive I'm using is a DEC TLZ06. Any idea if
> Hmm, wasnt the TLZ06 a DDS2 drive? At any rate, yeah, this drive
> might very well have this "problem" .. I had it with many DDS
> drives, might even have been a TLZ in that stack... I *do* know
> I tested it with a TLZ04.
>
> > this might also be a problem with an Exabyte 8500 tape drive? It would be
> Cant remember... only had a 8200 at the time, and cant remember the
> results of that..
I just decided to test a TLZ06 on my system, and it don't want to
work. I normally play with an Exabyte 8200, and that works just fine.
(This on a 11/84 with a CMD controller)
So it might be as some suggested, that the DDS drives aren't too happy.
I tried with a DDS2 tape in it, if that matters. The system sees the
drive, and I can mount and dismount tapes, and even eject them. Reading or
writing gives errors, though.
I have not verified the drive on any other system either, so there are
several possible problems here, but I thought I'd report what I can
anyhow.
Johnny
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt(a)update.uu.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
On Jan 15, 23:08, Tony Duell wrote:
> I beleive you are correct. One state is a -ve voltage between -3V and
> -25V, the other is a +ve voltage between +3V and +25V. Anything
between
> -3V and +3V is undefined.
My data sheets agree with that.
> [Actually, I'll admit to having fed the output of an HCT04 (or
similar)
> into a serial port once. My excuse it that it waas a one-off test
board,
> and I had the schematics of the serial card it was driving (which
showed
> a 1489 reciever).
I once used a dual opamp in an 8-pin DIL to do that. One half was the
receiver, one the driver. I knew that what I was driving wouldn't
overload the opamp's output, and it kept the chip count down (it was a
small microcomputer based on a Z8, on a board about 3" square).
> No way would I do this in a device to be used by others!)
Ditto!
--
Pete Peter Turnbull
Network Manager
University of York
Classic comp lister's,
I have MINC-11 ( seems to be a MINC-23 in a MINC-11 box) with the
following:
It only has these cards inside:
M8186 CPU
M7506 MEM
M8029 RX02 DISK CONT
M7954 IEEE CONT
M8043 4510 MUX Card
M8012 Boot Card
This was a working unit until recently when I consistantly get
"checksum error KVR 00" on bootup.
I suspect the M8012 card...perhaps Eprom bad? I have no Docs. I have been
to http://www.binarydinosaurs.co.uk/Museum/Digital/minc/minc.php and talked
with Adrian Graham and he sent me to this list.
any help appreciated greatly.
S.R. "Hutch" Hutchins
Engineering Department
Raytheon Technical Services Company, LLC
Norfolk, VA 23513
757-852-2134
FAX 757-852-2109
RayCommNet 7-493-2134
Just been playing with some real DEC hardware today and trying to coax
some life out of a pair of RA81 drives.
Both drives are exhibiting the same fault - as soon as the RUN button is
hit they seem to try and spin up for a second or two before the spindle
motor disengages and the red FAULT light comes on.
I'm not back at the site where these are until next weekend now, but is
this a common fault that might mean there are a few obvious things I
should check first?
One drive was supposedly working when decomissioned at the site where it
ran; the other one was definitely running on the site I was at today the
last time it was powered up a short while ago. Curious that both of them
are showing the same fault.
I only had the RA81 user manual with me today - should be able to get
hold of the service manual for next weekend. However, I hooked a
terminal up to the diagnostic port on both drives. Issuing a "RUN DIAG"
command with the HDA offline shows all tests passed. Pressing the RUN
button as described in the manual gives the "Front panel function in
progress" message as expected, the drive tries to spin up and stops, the
fault light comes on, and I get dumped back to the RA81> prompt on the
terminal - it doesn't even try to run any of the diags that the manual
suggests it should do at this point.
Looks like something's overloading when the drive tries to spin up and
immediately shutting things down. The HDA is free to turn, belt tension
seems good, and the motor manages a few revolutions before it stops.
Unforunately I can't for the life of me remember what other lights came
on at the front of the drive along with the FAULT light :-(
cheers
Jules
Pat:
It's been spoken for. Thank you for your interest.
Jeff
On Fri, 16 Jan 2004 14:38:01 -0500 Patrick Finnegan
<pat(a)computer-refuge.org> writes:
> Hey, did you get the email I sent you Wednesday about this stuff?
> And
> did I "win"? I need to know so I can deside whether or not to bid
> on
> stuff that closes on ebay tonight...
>
> Thanks,
>
> Pat
>
> On Wednesday 14 January 2004 23:34, jeff.kaneko(a)juno.com wrote:
> > The following items are available for shipping plus 15%.
> >
> > With thanks to Megan's field guide:
> >
> > 2 M7620 KA650-BA Q MicroVAX III CPU (workstation
> > license), 90nS.
> >
> > 1 M7651-PA DRV1W-S Q General-Purpose DMA Interface
> > (for BA200 series)
> >
> > 1 M7164 KDA50-Q Q Qbus SDI disk adapter, Q22 (1 of
> 2)
> > (QDA SDI)
> >
> > 1 M7165 KDA50-Q Q Qbus SDI disk adapter, Q22 (2 of
> 2)
> > (QDA SDI)
> >
> > 2 M7168 VCB02, QDSS Q 4-plane colour bitmap module
> >
> > 1 M7169 VCB02, QDSS Q 4-plane video controller module
> >
> > 4 M7621-AV MS650-AA Q 8-Mbyte RAM for KA650 (MicroVAX
> III)
> >
> > 1 M7622-BP MS650-BA Q 16-Mbyte RAM for KA650 (MicroVAX
> III)
> >
> > 1 M7769 KFQSA-S Q Storage Adapter (DSSI Disk
> Interface),
> > BA200 series
> >
> > 1 M8634-PA IEQ11-S Q Communications Controller
> (IEC/IEEE)
> > (for BA200 series)
> >
> > 1 M3127-PA DESQA-SA/SF Q Ethernet/thinwire adapter
> > (DELQA+DESTA) with S-box handle
> >
> > 1 M8087-PA Q Scanner/printer to Q-bus DMA
> interface
> >
> > Some cables are available, ask. If I don't get any takers, the
> whole
> > lot goes
> > into the melter. I just don't have the place to keep them
> anymore. .
> > . .
> >
> >
> > Jeff
> >
> > ________________________________________________________________
> > The best thing to hit the internet in years - Juno SpeedBand!
> > Surf the web up to FIVE TIMES FASTER!
> > Only $14.95/ month - visit www.juno.com to sign up today!
>
> --
> Purdue University ITAP/RCS
> Information Technology at Purdue
> Research Computing and Storage
> http://www.itap.purdue.edu/rcs/
>
>
________________________________________________________________
The best thing to hit the internet in years - Juno SpeedBand!
Surf the web up to FIVE TIMES FASTER!
Only $14.95/ month - visit www.juno.com to sign up today!
Hi,
Does anyone have a service manual for the Citizen 120D+ dot-matrix printer?
I'm trying to repair mine - the interface cartridge connector is totally
shot and I can't ID it. It looks like a DIN41612, but it's two-row (both
rows populated) with 30 pins. The printer's connector bears the text
"030P2B-L14N 92-4-03".
Thanks.
--
Phil. | Acorn Risc PC600 Mk3, SA202, 64MB, 6GB,
philpem(a)dsl.pipex.com | ViewFinder, 10BaseT Ethernet, 2-slice,
http://www.philpem.dsl.pipex.com/ | 48xCD, ARCINv6c IDE, SCSI
It isn't a parallel port, it is a subset of the PC/AT bus, with x86 timings
and a big bag-o-hacks to get DMA transfers to run a LOT faster than it was
ever meant to run.
Friends of mine and I have build interfaces off of an IDE connector that
talk directly to 80xx peripheral chips because of the similarity in timing.
The bus mastering side of IDE (esp if you're using a PCI interface) is the
weird part.
I just bought a somewhat older laptop, though I hope you will all forgive
me if it is slightly younger than the borderline for the interests of this
group (I am not sure on which side of the line it lies.)
It is a Toshiba 4010CDT, which uses a Li-Ion battery, the subject of this
message. I am amazed at the number of contacts between the battery and
the computer (about 10) and wish to know their function. On the Internet
I find nothing. On account of the short life-time of such batteries I
want to install NiMH. I accept that I would have to use a separate,
external charger, even removing the reserve battery fro the charging
process, as the price of being able to travel with a back-up battery which
would not die after two years of having it around.
The problem is all those connections; I have no idea what they do and only
a couple of them are needed for transfer of power to the computer. At
least part of the rest must be communicating data about the state of the
battery, either for the sake of charging or for warning of the soon-to-come
shut-down for lack of enough power to continue. I would have to lie to
the computer in such a way it thinks it is monitoring a Li-Ion battery, but
to do it I need to know what the lies must say. Does anybody have a clue
what the functions of these connections are?
Keeping my fingers crossed,
Bob
