XXDP help needed
Bill Gunshannon
Can anyone give me a rundown on the commands needed to use ZRQBC1
to format an RD52??
bill
--
Bill Gunshannon | de-moc-ra-cy (di mok' ra see) n. Three wolves
bi...@cs.uofs.edu | and a sheep voting on what's for dinner.
University of Scranton |
Scranton, Pennsylvania | #include <std.disclaimer.h>
Bill Gunshannon
Can anyone give me a rundown on the commands needed to use ZRQBC1
to format an RD52??
Is there docmentation available anywhere for XXDP?? People always
tell me UNIX is too cryptic, what would they say if the saw XXDP??
Peter da Silva
Bill Gunshannon <bi...@cs.uofs.edu> wrote:
> Can anyone give me a rundown on the commands needed to use ZRQBC1
> to format an RD52??
> Is there docmentation available anywhere for XXDP?? People always
> tell me UNIX is too cryptic, what would they say if the saw XXDP??
I wonder what extent DEC's naming conventions led to their ultimate
downfall? Once you're used to it you can tell a LA120 from an RZ28 and
a KZPCM-AA from a FRPG4-WI, but damn...
--
In hoc signo hack, Peter da Silva <pe...@baileynm.com>
`-_-' Ar rug tú barróg ar do mhactíre inniu?
'U` <pfy> Sigs with pfy's markov chain.
-- "pfy", a markov chain IRC bot.
Bill Gunshannon
> Bill
>
> Once you boot up using XXDP and get to the period prompt.
>
> .R ZRQBC1
This was the easy part.
>
> It will prompt you from there.
> Address, unit, Goodbye existing data etc.
The only thing it prompts is:
DR>
Come to think of it, that's about all any of the utilities
prompt with.
The only command I figured out from there is EXIT.
Tim Shoppa
> > .R ZRQBC1
>
> This was the easy part.
>
> >
> > It will prompt you from there.
> > Address, unit, Goodbye existing data etc.
>
> The only thing it prompts is:
> DR>
>
> Come to think of it, that's about all any of the utilities
> prompt with.
>
> The only command I figured out from there is EXIT.
Try a START. XXDP diagnostics/utilities are generally non-verbose!
Tim.
James Kittle
Once you boot up using XXDP and get to the period prompt.
.R ZRQBC1
It will prompt you from there.
Address, unit, Goodbye existing data etc.
If you need to get your drive formatted and don`t have
XXDP, I will do for you. $ 25.00 + Shipping.
Bill Kittle
BLT Services
Tustin, California
Bill Gunshannon wrote:
>
> Can anyone give me a rundown on the commands needed to use ZRQBC1
> to format an RD52??
>
> Is there docmentation available anywhere for XXDP?? People always
> tell me UNIX is too cryptic, what would they say if the saw XXDP??
>
James Kittle
Type sta at the DR prompt.
Type H at the period prompt and you should see the help file.
I still use this to format RA Drives. ZUDKY1
Bill
Bill Gunshannon wrote:
>
> On Tue, 26 Oct 1999, James Kittle wrote:
>
> > Bill
> >
> > Once you boot up using XXDP and get to the period prompt.
> >
> > .R ZRQBC1
>
> This was the easy part.
>
> >
> > It will prompt you from there.
> > Address, unit, Goodbye existing data etc.
>
> The only thing it prompts is:
> DR>
>
> Come to think of it, that's about all any of the utilities
> prompt with.
>
> The only command I figured out from there is EXIT.
>
paramucho
>
>
>Can anyone give me a rundown on the commands needed to use ZRQBC1
>to format an RD52??
>
>Is there docmentation available anywhere for XXDP?? People always
>tell me UNIX is too cryptic, what would they say if the saw XXDP??
I nutted it out a few months back, but I've forgotten it already!
It really is worth a little effort I guess. I received some docs via
the ng which I will try to locate on the weekend.
--
ian
|--paramucho------[para...@hammo.com]---[www.beathoven.com]------|
|----[alt.ato]---[alt.non.sequitur]---[rec.music.beatles]----------|
Bill Gunshannon
|> Bill
|>
|> Type sta at the DR prompt.
I'll try this and see if anything after that makes any sense.
|> Type H at the period prompt and you should see the help file.
The "Help" is merely an explanation of the stripped down RT11
commands available from the "." prompt. Nowhere in "Help" does
it address the available utilities.
|>
|> I still use this to format RA Drives. ZUDKY1
I'll give this a try when I get home tonite!!
Chris Doran
bi...@cs.uofs.edu (Bill Gunshannon) wrote:
> Is there docmentation available anywhere for XXDP?? People always
> tell me UNIX is too cryptic, what would they say if the saw XXDP??
You'll find some general instructions at
http://www.dunnington.u-net.com/public/XXDP.ps
but it doesn't cover specific diagnostics.
Chris
Sent via Deja.com http://www.deja.com/
Before you buy.
Giovanni Bini
>
> Can anyone give me a rundown on the commands needed to use ZRQBC1
> to format an RD52??
>
> tell me UNIX is too cryptic, what would they say if the saw XXDP??
>
>
> --
> Bill Gunshannon | de-moc-ra-cy (di mok' ra see) n. Three wolves
> bi...@cs.uofs.edu | and a sheep voting on what's for dinner.
> University of Scranton |
> Scranton, Pennsylvania | #include <std.disclaimer.h>
Look at the foolowings old message !!!
<<< EISNER::$2$DIA7:[NOTES$HIVOL]HARDWARE_HELP.NOTE;1 >>>
-< HARDWARE_HELP >-
================================================================================
Note 93.0 Low-end disk devices - The Digital difference 136
replies
EISNER::KENNEDY "Terry Kennedy" 22 lines
16-JAN-1988 01:14
--------------------------------------------------------------------------------
The disk drives used in Digital's low-end systems are generally
slightly- or un-modified versions of devices available on the
open market. DEC's markup appears to average about 800% of the
best price you can get on the open market. For some, that is not
an unreasonable amount to pay for the security of an 'all-DEC'
system. For others (such as myself) it is entirely unnecessary.
There are several companies who will do you the 'favor' of sell-
ing you a DEC 'equal' drive for *only* a 400% mark-up.
Since the PC 'explosion', prices on these equivalent units are
very low due to the cut-throat pricing of the marketplace. I
therefore set out to determine what the differences (if any)
between the DEC device and the generic device are. This series
of notes will present my discoveries.
Please feel free to use this information in any way you choose,
but remember that neither I, Digital, nor the vendor you buy
the equipment from can be responsible for problems you may en-
counter. Having said that, let me also say that I will do my
best to help you overcome any problems, and that all of the
vendors I have used offered to give me a refund if the unit did
not work in my DEC system.
================================================================================
Note 93.1 Low-end disk devices - The Digital difference
1 of 136
EISNER::KENNEDY "Terry Kennedy" 20 lines
16-JAN-1988 01:28
-< RD52 >-
--------------------------------------------------------------------------------
The DEC RD52 comes in two flavors - the more common one is the
Quantum Q540 drive. The second-source drive, an Atasi AT3046,
was added due to shortages of the Q540 when DEC's demand was
highest. These drives will work on RQDX1, 2, or 3 controllers
at the current revision level. There are no differences between
the DEC and non-DEC flavors which prevent operation. DEC is
alleged to require tighter tolerances on drives made for them.
There is actually a third RD52 drive type. None of these units
were ever shipped to DEC customers, and the vendor ceased pro-
duction of disk drives. The manufacturer and model was the
Evotek ET5540.
If you have one of these drives around, you can use it with
your DEC subsystem. Both drives are no longer manufactured in
any quantity, so I would advise against buying one. If you
must, however, they should be available in the $300-$400 range
from various surplus shops. I have used both models without
problems. Since this is the largest drive a RQDX1 will support,
you might want to investigate this option.
================================================================================
Note 93.2 Low-end disk devices - The Digital difference
2 of 136
EISNER::KENNEDY "Terry Kennedy" 25 lines
16-JAN-1988 01:37
-< RD53 >-
--------------------------------------------------------------------------------
The DEC RD53 is a Micropolis 1325 or 1335 drive with one mod-
ification. Earlier units were 1325s, current units are 1335s.
The modification is as follows [yes, it will probably void
your warranty]: Turn the drive over so that the logic board
is facing you. Locate the two slotted screws and loosen them.
Lift the drive logic board up gently (it is hinged). Toward
the hinge end, locate the empty location marked R7. Solder a
jumper in. You now have a RD53. You will need to move the
drive select jumper to either 3 (for DU0 or expansion cabinet)
or 4 (for DU1).
One word of caution - if you are re-using your old drive's
skid plate (the slide mount bracket), be sure to tape over
the metal on the front end of the bracket or it will short
out the drive. DEC's RD53 skid plates have foam covering the
metal.
I have purchased three of these drives from Storage Dimen-
sions in California, (408) 395-2688. The cost was under
$850 each and they arrived in two days. They offer a one
year warranty on the drive, too. They call it a 'Model AT70',
but they're probably going to know what you mean if you
ask for 'the DEC drive' by now!
Of course, you need a RQDX2 or 3 to run this drive...
================================================================================
Note 93.3 Low-end disk devices - The Digital difference
3 of 136
EISNER::KENNEDY "Terry Kennedy" 72 lines
16-JAN-1988 02:05
-< RX33 >-
--------------------------------------------------------------------------------
The DEC RX33 is an IBM AT-type drive with some jumper changes.
DEC's drive is some variant of the TEAC FD55G. I have exper-
imented and discovered that the following drives/jumperings
work with the RQDX3:
TEAC FD-55GFV-17-U
Jumpers in:
HG
I (Roman numeral 1)
U1
U2
DC
FG
DS0 (for first RX33)
DS1 (for second RX33)
Jumpers out:
(all others)
Install the terminator, RA1, on the last (or only) drive
TEAC FD-55GFR-540-U
Jumpers in:
I (Roman numeral 1)
U0
U1
DC2
FG
D0 (for first RX33)
D1 (for second RX33)
Jumpers out:
(all others)
Install the terminator, RA1, on the last (or only) drive
Toshiba FDD 6882E1J01 (or ND-08DE-G)
Jumpers in:
LD
DC
DE
D1 (for first RX33)
D2 (for second RX33)
Jumpers out:
(all others)
Install the terminator jumper, TM, on the last (or only) drive
I have purchased many of the TEAC 540 drives from JDR Micro-
devices in California, (800) 538-5000. They have the follow-
ing items of interest:
FD-55G High density drive - $129.95
FD-5Y 'Y' cable to power 2 drives from the BAnn box - $2.95
FD55-MHW Mounting hardware for two FD-55G drives - $2.95
FD55-FP Beige faceplate for FD-55G drive (black is std.) - $2.95
FD55-SPEC Specification for FD-55G drive - $5.00
FD55-MAINT Maintenance manual for FD-55G drives - $25.00
Therfore, you can get two RX33's for $265.80 with the Y cable and
mounting hardware - a far cry from DEC's $795.00 each...
You need an RQDX3 to run these drives, of course. You will also
need to save the skid plate from your RX50 drive.
If you order these drives elsewhere, please remember that the
mounting hole threads are *metric*. Finding the right screws
will be a lot harder than finding the drives!
================================================================================
Note 93.4 Low-end disk devices - The Digital difference
4 of 136
EISNER::KOZAM 28 lines
17-JAN-1988 00:17
-< Used DEC = Big Savings, No Compatability Problems >-
--------------------------------------------------------------------------------
If you need all-DEC, but are comfortable with used equipment,
there are some bargains available. For example, used DEC RD53s sell
for $ 700 each, including cables. These are the real thing,
DEC labels and all. New DEC RD53s, in the box, can be had for between
$ 1000 - $ 1200. The EXACT same item through DECDirect lists for $
3800.
Regardless of whether you got them used or new, field service will
take care of them (although at $ 700, it is probably cheaper to
replace, rather than repair them).
Most used dealers are very reputable. A 30 to 90 day warranty
is common and most places let you talk to their technical people if
you need help. Some places don't do any testing - they just buy,
then ship to you. Others are very thorough and clean up things up
so that it looks like new. One caution, however, is to make sure
you get the small parts you need. For instance, make sure you get
cables. Often, all it takes is a reminder to the dealer that you
need them.
A great source of used prices is a weekly publication called The
Processor, (800-247-4880). I think you can get a free trial
subscription
by calling.
I've been very happy with my used equipment purchases and have
had fewer problems with used stuff than with new.
Marc Kozam
Disclaimer - I'm not a dealer, just a happy player in the used market.
================================================================================
Note 93.5 Low-end disk devices - The Digital difference
5 of 136
EISNER::KENNEDY "Terry Kennedy" 0 lines
4-FEB-1988 19:15
-< RD32 - see Note 92.3 in this conference >-
--------------------------------------------------------------------------------
================================================================================
Note 93.6 Low-end disk devices - The Digital difference
6 of 136
EISNER::KENNEDY "Terry Kennedy" 12 lines
1-APR-1988 01:22
-< RD54 >-
--------------------------------------------------------------------------------
The DEC RD54 is a Maxtor XT-2190. I have installed one of
these with no modifications in a Micro-11 system (with a
RQDX3 as the controller, of course).
I purchased the drive from Storage Dimensions in Califor-
nia, (408) 395-2688. The cost was under $1700 and it
arrived in two days. They offer a one year warranty on the
drive, too. They call it a 'Model AT133'.
Of course, you need an RQDX3 or the integrated thingie in
a MicroVAX 2000 to run this drive...
================================================================================
Note 93.7 Low-end disk devices - The Digital difference
7 of 136
EISNER::ETHINGTON "Superior Klingon Technology" 9 lines
14-MAY-1988 23:41
-< Wanted: Skid plate part # >-
--------------------------------------------------------------------------------
Along these lines, folks.....does anyone know the part numbers for
your friendly neighborhood field circus to sell you the plastic
skid plate and big flat grounding spring/shield or whatever? Lord
knows you can get the same disk for enormously less loot than
Storage
Systems wants, but it would be nice to have the official skid plate
hardware to hold it in place instead of rubber bands or string or
whatever.....
Jerry
================================================================================
Note 93.8 Low-end disk devices - The Digital difference
8 of 136
EISNER::KILLEEN "Jeff Killeen" 0 lines
15-MAY-1988 00:35
-< DEC WILL NOT SELL YOU THE SKID PLATE >-
--------------------------------------------------------------------------------
================================================================================
Note 93.9 Low-end disk devices - The Digital difference
9 of 136
EISNER::RICE "Gary Rice" 12 lines
15-MAY-1988 09:12
--------------------------------------------------------------------------------
>< Note 93.8 by EISNER::KILLEEN "Jeff Killeen" >
> -< DEC WILL NOT SELL YOU THE SKID PLATE >-
Is this a new policy? I was able to buy 10 of the little puppies about
a year and a half ago thru DECdirect.
I don't remember the part number. It is packed away in my annual
receipts
bag for 1986. However, if you need a small quantity, let me know via
mail.
I could be convinced to part with 4 or 5 of them.
Gary
================================================================================
Note 93.10 Low-end disk devices - The Digital difference
10 of 136
EISNER::KOZAM 8 lines
15-MAY-1988 18:21
-< Skid Plate Part Number 74-25652-01 >-
--------------------------------------------------------------------------------
The part number for skid plates (which I read off an RD53) is
74-25652-01 and is described as "112684 Skid" and is priced at only $
5.00
each (that's a real surprise!).
I don't know if that includes the metal grounding plate or just
the plastic part.
Marc Kozam
================================================================================
Note 93.11 Low-end disk devices - The Digital difference
11 of 136
EISNER::KILLEEN "Jeff Killeen" 3 lines
16-MAY-1988 18:26
-< HMMMMMM....... >-
--------------------------------------------------------------------------------
When I tried to buy one I was told by the E-store they were not
available for sale. If you get them let us know - I will go out and buy
a dozen.
================================================================================
Note 93.12 Low-end disk devices - The Digital difference
12 of 136
EISNER::RICE "Gary Rice" 15 lines
18-MAY-1988 06:59
--------------------------------------------------------------------------------
> The part number for skid plates (which I read off an RD53) is
> 74-25652-01 and is described as "112684 Skid" and is priced at only $ 5.00
> each (that's a real surprise!).
> I don't know if that includes the metal grounding plate or just
> the plastic part.
74-25652-01 buys you the plastic "plate". Part number 74-28201-02 gets
you
the metal "grounding strap". It is a bit more at $11.00 (1986 price). I
got BOTH from DECdirect by just calling and requesting these part
numbers.
They were very helpful and gave no indication that I wasn't allowed to
buy
these parts.
Gary
================================================================================
Note 93.13 Low-end disk devices - The Digital difference
13 of 136
EISNER::ETHINGTON "Superior Klingon Technology" 9 lines
29-MAY-1988 00:32
-< Paydirt! >-
--------------------------------------------------------------------------------
Thanks, folks! I had the part number for the plastic skid plate,
and had no difficulty at all ordering a batch - I think the price
was still around $5. I had never come up with the number for the
big spring grounding plate doodad, though - I'll try ordering some
of these critters now.
DECUS to the rescue again, God help me I do love it so.....
Jerry
================================================================================
Note 93.14 Low-end disk devices - The Digital difference
14 of 136
EISNER::KENNEDY "Terry Kennedy" 7 lines
29-MAY-1988 05:06
-< Logic of part numbers! >-
--------------------------------------------------------------------------------
> ... still around $5. I had never come up with the number for the
> big spring grounding plate doodad, though - I'll try ordering some
> of these critters now.
The spring p/n should be a -02, where the plastic is -01.
Terry
================================================================================
Note 93.15 Low-end disk devices - The Digital difference
15 of 136
EISNER::ETHINGTON "Superior Klingon Technology" 16 lines
21-JUN-1988 00:52
-< Stacking Hardware????? >-
--------------------------------------------------------------------------------
Still further along these lines.....
I understand that new mounting hardware is available to support
stacking two half-height RD3x series Winchesters in a BA23 box.
It is also apparently supported to stack a pair of RX33 half-height
floppies, allowing you to stuff 2 Winchesters and 2 floppies in
the BA23 box. Assuming one has say an official DEC RD31 with skid
plate and such, does anyone know what parts and cables need to be
ordered to stack these varmints? I've not seen the stacking setup;
has anyone got one of these critters to see the cabling? For
instance,
do you need a "Y" power cable to plug 2 Winchesters into one plug
in the BA23 box? How do the 2 floppies cable up?
Inquiring minds want to know.....
Jerry
================================================================================
Note 93.16 Low-end disk devices - The Digital difference
16 of 136
EISNER::KENNEDY "Terry Kennedy" 31 lines
21-JUN-1988 21:26
-< Possible, proceed carefully >-
--------------------------------------------------------------------------------
> I understand that new mounting hardware is available to support
> stacking two half-height RD3x series Winchesters in a BA23 box.
My sales rep also 'understands' this - however, the only way we've
figured out to get the part numbers is to order an 11/53 and dissect
it. This is because the '53 is one of the only systems standard with
this 2-up stuff, and the 11/53 documentation is a few photocopied
addendum sheets which you may or may not get.
You *will* need the BA23-UC (@$200.00) upgrade kit to properly put
2 winnies in the BA23. This kit gives you an extra set of ready/write
protect buttons, and deletes the two floppy WP indicators. [Yes, you
can do it without the -UC, but it isn't very pleasant and if you get
the drive selects wrong you will blow the format off *both* drives.]
> It is also apparently supported to stack a pair of RX33 half-height
> floppies, allowing you to stuff 2 Winchesters and 2 floppies in
> the BA23 box.
Yes, that is the maximum configuration. If you go for it, be *sure*
you have the current revision of the power harness or you'll go up in
smoke!. The current harness is individual wires with white plastic con-
nectors (between the power supply and the backplane).
Anyway, to answer your question, I just went out and got the 'Y'
cable and the adapter plates from my local garage-based PC outfit. Most
places which will sell you RX33 look-alikes will gladly throw in the Y
and the plates with the order. I have ribbon-cable presses here, so I
made my own data cables up. Again, your local PC place should be able
to make them up, once you convince them it's not a standard PC part and
that you know what you're doing...
================================================================================
Note 93.17 Low-end disk devices - The Digital difference
17 of 136
EISNER::KILLEEN "Jeff Killeen DECUServe Chair" 13 lines
21-JUN-1988 22:35
-< AFTER MANY HRS OF WONDERING WHY I COULDN'T WRITE TO DU1 >-
--------------------------------------------------------------------------------
> [Yes, you
> can do it without the -UC, but it isn't very pleasant and if you get
> the drive selects wrong you will blow the format off *both* drives.]
Yes and No - Without the second set of buttons the second internal drive
comes up R/W on an RQDX1 and RO on a RXDX2 or RQDX3. Trimarchi (no I
don't
own stock in this company) sells the drives with the stacking hardware
and
a special set of cables. The cables de-activate the two front panel
disk buttons and forces the drives ready W/R all the time.
I found this one out the hard way......
===============================================HTTP/1.0 200 Document
Follows
Date: Mon, 31 May 1999 15:46:49 GMT
Server: WinGate Engine
Content-Type: text/plain
Content-Length: 164007
=================================
Note 93.18 Low-end disk devices - The Digital difference
18 of 136
EISNER::MAYHEW "Bill Mayhew" 15 lines
22-JUN-1988 10:36
-< Drives w/stack hardware, and floating signals >-
--------------------------------------------------------------------------------
There is a variant of both the RD31 and RD32 drives that "comes
with" the stacking hardware, but that doesn't help a whole bunch
if you already have the drive... for those that care, though, you
should be able to find it readily (the words STK HDW or such are
in the part title) on the Estore or in the USPL.
I have reports from other folks who have put multiple Winchesters
in a BA23 without the extra switches that what happens is the
write-protect and drive-enable signal lines are left "floating".
Depending on the phase of the moon, your power supply (AC and DC),
etc., you can then have flaky problems where the drive suddenly
drops off-line, or write-protects itself, without warning. I don't
know which controller was involved, though I think it was the RQDX1.
The drives were RD52s, which are risky ANYWAY to double up in a
BA23 because of power draw, but these folks did it...
================================================================================
Note 93.19 Low-end disk devices - The Digital difference
19 of 136
EISNER::KENNEDY "Terry Kennedy" 7 lines
22-JUN-1988 20:50
-< Many variables... >-
--------------------------------------------------------------------------------
> Yes and No - Without the second set of buttons the second internal drive
> comes up R/W on an RQDX1 and RO on a RXDX2 or RQDX3.
It depends on a number of things, including the revs of the RQDXn,
whether
a RQDXE is also in the system, and the rev of the front panel. Also, you
need
to jumper the first fixed disk as DS3 and the second as DS4, even if you
have
the new front panel.
================================================================================
Note 93.20 Low-end disk devices - The Digital difference
20 of 136
EISNER::KENNEDY "Terry Kennedy" 26 lines
27-JUN-1988 23:43
-< RX50 drive substitute! >-
--------------------------------------------------------------------------------
Finally, a RX50 drive replacement!
I have managed to convince a Toshiba IBM AT-type floppy drive that it
is an RX50. I've tested extensively with both XXDP+ and RSTS/E, but that
doesn't mean that it will work with other systems - you'll have to try
it and let me know.
Here's what you need to do:
1) Get a Toshiba ND-08DE-G drive kit from your local IBM garage oper-
ation. (The actual drive is a Toshiba FDD6882E1J01)
2) Set jumpers as follows: D1, TM, LD and DE on, all others off.
3) Cut the trace leading to pin 2 on the data connector.
4) Solder a wire from the drive side of the wire you cut in (3) to
signal ground (the large solid areas on the circuit board)
This has been tested on both the RQDX1 (M8639/M8639-YA) controller
with firmware 172E5/173E5, as well as with the RQDX2 (M8639-YB) with
firmware 188E5/189E5. With an RQDX3, you can use the same drive in
RX33 mode (see an earlier reply in this note).
For the curious: what the above has done is forced the drive into
300 RPM/low density mode, and disabled the drive ready line.
================================================================================
Note 93.21 Low-end disk devices - The Digital difference
21 of 136
EISNER::HANRAHAN "Jamie Hanrahan, j...@crash.cts.com" 10 lines
10-AUG-1989 19:57
-< Does RD53 change for uV2000? >-
--------------------------------------------------------------------------------
>< Note 93.2 by EISNER::KENNEDY "Terry Kennedy" >
> -< RD53 >-
>
>The DEC RD53 is a Micropolis 1325 or 1335 drive with one mod-
>ification...
Is there anything different about the RD53 as used in the uV2000?
(We have a 2000 with a failing RD53...)
Also, can we drop an RD54 lookalike into instead?
================================================================================
Note 93.22 Low-end disk devices - The Digital difference
22 of 136
EISNER::KOZAM 8 lines
10-AUG-1989 22:29
-< VS2000 RD53 is a regular RD53 >-
--------------------------------------------------------------------------------
> Is there anything different about the RD53 as used in the uV2000?
> (We have a 2000 with a failing RD53...)
Nothing different from a regular RD53.
> Also, can we drop an RD54 lookalike into instead?
Don't know why not. Never heard otherwise.
================================================================================
Note 93.23 Low-end disk devices - The Digital difference
23 of 136
EISNER::KENNEDY "Terry Kennedy" 0 lines
10-AUG-1989 23:54
-< .-1 is correct on both counts >-
--------------------------------------------------------------------------------
================================================================================
Note 93.24 Low-end disk devices - The Digital difference
24 of 136
EISNER::HARVEY "Jack Harvey" 12 lines
11-AUG-1989 04:44
-< Skid Plate >-
--------------------------------------------------------------------------------
Trivial mechanical. The 2000 has mounting brackets that
attach to holes in the sides of the raw 5.25" device. You
need to screw the black plastic (with floppy metal ground
sheet) skid plate to the bottom of the raw device when
mounting it in a BA23, 123, etc.
I have formatted lookalike RD54's on a 2000, loaded software
and then moved the disk to a II. No changes, other than
screwing on a skid plate.
If you are going the other direction, just remove the skid
plate and save it for a friend.
================================================================================
Note 93.25 Low-end disk devices - The Digital difference
25 of 136
EISNER::OSUDAR "John Osudar" 6 lines
11-AUG-1989 13:32
-< Right -- no problems >-
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Yup, the last several notes are right.
We got two VS2000's diskless, bought an RD53-alike and an RD54-alike
and put one in each, with no problem (other than the mounting
change.)
Subsequently got another RD54-alike, ripped out the 53 and put the
54 in with no problems. Beats paying DEC's prices... :-)
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Note 93.26 Low-end disk devices - The Digital difference
26 of 136
EISNER::MCCORMICK_B "Virtual Bob" 5 lines
12-AUG-1989 16:35
-< Disk format quirk? >-
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Don't remember exactly (maybe someone else will remember...?!)
but I believe there was a problem with some (maybe early) 2000's
where if you formatted the disk on the 2000 it didn't result in
the same amount of "formatted capacity" as when you formatted it
on the RQDX3 ...
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Note 93.27 Low-end disk devices - The Digital difference
27 of 136
EISNER::KOZAM 11 lines
14-AUG-1989 21:54
-< Never seen formatting trouble >-
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> < Note 93.26 by EISNER::MCCORMICK_B "Virtual Bob" >
> -< Disk format quirk? >-
> where if you formatted the disk on the 2000 it didn't result in
> the same amount of "formatted capacity" as when you formatted it
> on the RQDX3 ...
While I can't conclusively state that this didn't ever occur, I've
never seen it. Moving RD5X drives between 2000s and RQDX3s was pretty
common for me for a while and I never had trouble, even though several
versions of RQDX3 firmware were involved.
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Note 93.28 Low-end disk devices - The Digital difference
28 of 136
EISNER::MCCORMICK_B "Virtual Bob" 14 lines
20-AUG-1989 18:20
-< Maybe not problem - but different! >-
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| > < Note 93.26 by EISNER::MCCORMICK_B "Virtual Bob" >
| > -< Disk format quirk? >-
|
| > where if you formatted the disk on the 2000 it didn't result in
| > the same amount of "formatted capacity" as when you formatted it
| > on the RQDX3 ...
|
| While I can't conclusively state that this didn't ever occur,
I've
| never seen it. Moving RD5X drives between 2000s and RQDX3s was pretty
| common for me for a while and I never had trouble, even though several
| versions of RQDX3 firmware were involved.
I think you won't see it as a problem (or trouble) but if you did
a SHOW DEV/FULL DUAn: you may see different "formatted" sizes!
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Note 93.29 Low-end disk devices - The Digital difference
29 of 136
EISNER::KENNEDY "Terry Kennedy" 8 lines
15-SEP-1989 22:41
-< Toshiba-as-RX50 doesn't work on RQDX3 >-
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