Paul:
Thanks for the name of the program. Bitsavers has that tape but no
manual.
Does any have the loading instructions for Cromemco Magenta Martini?
Thanks.
Rich
-----Original Message-----
From: cctalk-bounces(a)classiccmp.org
[mailto:cctalk-bounces@classiccmp.org]On Behalf Of Paul A. Pennington
Sent: Monday, October 25, 2004 11:52 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Magenta Martini, was Dazzler demo program
Richard wrote:
> ...I haven't been able to locate the demo that was used in the window
> of the BYTE Shop.
It was called "Magenta Martini", if that helps. Made a huge splash in
the monochrome world of computers at the time.
Paul Pennington
Augusta, Georgia
Hello, all:
Although I've been able to find copies of assorged Cromemco
Dazzler-related software on bitsavers, I haven't been able to locate the
demo that was used in the window of the BYTE Shop. I don't know the exact
name of the program, so that might be hampering me a bit.
Does anyone have a copy of this program in paper tape format that
they could email me/point me to?
Thanks.
Rich
Ashley,
on www.pdp-11.nl in the left menu, click on the *folder* "PDP-11/35".
A tree structure opens. Click on the link "CPU information".
At the bottom of the page that opens are the XXDP diags for the 11/40.
Clicking on the links before each of them gives a short description.
You can also click on "XXDP" in the left menu, and from the page that
opens, click on the link "11/40 processor and options".
Must check at home if I have descriptions of the MM11-xP diags.
Sorry, can't (at the moment) help with .BIN's (no power available yet).
- Henk, PA8PDP.
> -----Original Message-----
> From: cctalk-bounces(a)classiccmp.org
> [mailto:cctalk-bounces@classiccmp.org]On Behalf Of Ashley Carder
> Sent: dinsdag 26 oktober 2004 6:07
> To: cctalk(a)classiccmp.org
> Subject: PDP-11/40 XXDP diagnostics
>
> Does anyone out there have the diagnostics for a
> PDP-11/40 or diags for MM11-UP Core Memory? Or
> even a list of which XXDP diags are the correct
> ones for the 11/40 and for the MM11-UP?
>
> Any help would be appreciated.
>
> Thanks,
> Ashley
Does anyone out there have the diagnostics for a
PDP-11/40 or diags for MM11-UP Core Memory? Or
even a list of which XXDP diags are the correct
ones for the 11/40 and for the MM11-UP?
Any help would be appreciated.
Thanks,
Ashley
There was some talk about the various lots of HP 1000 M series boxes on gov.
liquidation. I just wanted to let folks on the list know that I was going
for the lot with three cpu's in it. That leaves another lot with 6 cpus, and
a third lot with 8 cpus, in case anyone wants some for themselves. I was
going to get one of the larger lots, but it turns out the lot of 3 will
probably be the best one for me at this time and I'll probably keep all 3
cpus.
Soooo if anyone is going for some of those M series, the 6 or 8 count lots
look better. Yeah, that's the ticket. *GRIN*
Jay
For those of you that collect gaming systems also, I was this months
Collector's Spotlight person in the VIDEO GAME COLLECTOR #2 issue. Check it
out and excuse the bad picture my wife took of me.
I could have sworn I had a case of blank tape reels for my facit punch.
Can't seem to find them, but I can find a bunch of blank fan-fold tape so
maybe that's what I was thinking of :\
Anyone have some reels of blank paper tape for a facit punch they'd care to
trade/sell for? I'm looking for an initial stock of maybe 8 reels.
Jay West
I am looking for a HP 1727a- manual. Please send me a message if available.
Best Regards
Z. Dimic
Broicher Str. 139a
41179 Moenchengladbach
Germany
email: z.dimic(a)t-online.de
Hi there I have the same problem... Looking for the Sony MP-F52W-00D floppy drive. Would like to know if you can give me the phone number to the Sony Company you called. Would much appreciate it. You can contact me at www.fabio_padula@hotmail.com
Hi - does anybody know of any copies of the KA640 Tech Manual online? I
think i've got a blown DSSI picofuse* and i'd like to have a casual flip
through the manual whilst i'm away from the system.
I've searched Manx and poked Google, both turned up nothing.
Cheers guys
alex/melt
* Terminator not lighting up, first disk in chain never coming online, CPU
"Normal Operation Not Possible" errors
This talk of software handbooks reminded me...
I have a "VAX Hardware Handbook 1982-1983". (Copyright 1982.) Covers the
11/730, 11/750 and 11/780 (at least, going off the chapter sections.) It's
in pretty good condition for it's age.
I'm never going to have a use for it, so it's Free to anybody who wants it
- just cover postage to your neck of the woods. (I'm in the UK.)
Rob.
--
Random plug: www.russianglass.co.uk
Anyone have some reels of blank paper tape for a facit punch they'd care to
trade/sell for?
--
Western Numerical Controls http://www.westnc.com/paptape.html#tty
I would suggest unoiled dark blue. Black has a high carbon content
which is bad for punches.
Paul:
Thanks -- that's exactly what I was looking for. Bitsavers.org has a
copy of that tape on-line.
Rich
-----Original Message-----
From: cctalk-bounces(a)classiccmp.org
[mailto:cctalk-bounces@classiccmp.org]On Behalf Of Paul A. Pennington
Sent: Monday, October 25, 2004 11:52 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Magenta Martini, was Dazzler demo program
Richard wrote:
> ...I haven't been able to locate the demo that was used in the window
> of the BYTE Shop.
It was called "Magenta Martini", if that helps. Made a huge splash in
the monochrome world of computers at the time.
Paul Pennington
Augusta, Georgia
(I sent this first to the rescue at sunhelp list, but figure people here
might be of more help with older machines.)
So, I've tried booting my Sun 3/180, and can't get it to work. With the
switch set to "diag" on the back, I get the following output:
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Boot PROM Selftest
PROM Checksum Test
DVMA Reg Test
Context Reg Test
Segment Map Wr/Rd Test
Segment Map Address Test
Page Map Test
Memory Path Data Test
NXM Bus Error Test
Interrupt Test
TOD Clock Interrupt Test
MMU Access Bit Test
MMU Access/Modify Bit Test
MMU Invalid Page Test
MMU Protected Page Test
Parity Test
Err 9: Bad parity should cause nmi
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
So, it suggests there's a problem with the CPU board. Does anyone have
a spare 3/180 or 3/280+memory laying around? Alternatively, I could
probably try to replace the "broken chip", assuming I can find a
replacement, and a decent enough documentation to see what's wrong.
And, yes I've already tried pulling out the other memory board in the
system, all the RAM that's left is (soldered) on the CPU board. I have
a feeling it's not the memory, however, which is the problem.
So, if anyone has something I could use - either documentation or
hardware - that would be much appreciated. : )
Pat
--
Purdue University ITAP/RCS --- http://www.itap.purdue.edu/rcs/
The Computer Refuge --- http://computer-refuge.org
Hi Stefan
Sorry I didn't get back to you. Things got busy and
I've been away from the net over the weekend. It looks
like you need to make an adapter to at least disconnect
Pin 22 so the VPP level can't get to the chips pin.
The mask ROMs may have any of the 4 configurations for
pins 20 and 22. I would try first just disconnecting
22 from the test side and connecting the chips pin
22 to pin 20. This assumes that the mask ROM uses the same
selects as the EPROM does. I'd do that as the first try.
Does anyone remember which pin they pull high on to
check the manufacture ID. I think it was A11 but I'm not
all that sure. It would be a good Idea to stack two
resistors of about 1K in series with this lead. One
should place a diode to VCC ( pin 28 ) to the junction
of the two resistors with the band towards VCC. This
will protect the part against any ID test voltage that
might be used. It would still allow the address to pass.
Dwight
>From: birs23(a)zeelandnet.nl
>
>You can find that here :
>http://www.xs4all.nl/~ganswijk/chipdir/holtek/ht23c256.txt
>
>For a 27256 you can look here :
>http://www.xs4all.nl/~ganswijk/chipdir/giicm/27512.txt
>
>Cheers,
>
>Stefan
>
>At 23:09 22-10-2004, you wrote:
>>Hi
>> I guess the next thing is to find a pinout for
>>the 23512 to see if they have a select that is inverted
>>that might need to be patched around to read on
>>a standard programmer.
>>Dwight
>>
>> >From: birs23(a)zeelandnet.nl
>> >
>> >Dwight, not missing the discussion ;-)
>> >
>> >At 19:15 22-10-2004, you wrote:
>> >
>> >> >From: ard(a)p850ug1.demon.co.uk
>> >> >
>> >> >>
>> >> >> Hi,
>> >> >>
>> >> >> I know very little about electronics and eproms so this question
>> might be
>> >> >> really easy. I would like to know what the difference is between a
>> 23512
>> >> >> eprom and a 27512 and if there are any differences if its possible to
>> >> make
>> >> >
>> >> >I thought the 23512 was the mask-programmed part (not an EPROM), and is
>> >> >otherwise the same device. You should be able to read it (unless your
>> >> >programmer tries to be clever and read the manufacturer's ID word, etc).
>> >> >
>> >> >-tony
>> >> >
>> >>
>> >>Hi Tony
>> >> I think you are right about the 23xxx being mask versions.
>> >>The problem with the newer EPROM parts is that they do not
>> >>require pulsing of the programming voltage. Many programmers
>> >>simply leave the programming voltage high while reading or
>> >>verifying. This is real bad for mask parts. Also, most mask
>> >>parts use the programming voltage pin as another select.
>> >>This means that it may need to be in the opposite state that,
>> >>even a programmer that allows setting of the program voltage,
>> >>may not be in the right state to read.
>> >> Also, I think this fellow is off the list and doesn't realize
>> >>that he is talking to a list. I suspect he is missing our
>> >>conversations related to his issue.
>> >>Dwight
>> >
>> >
>
>
> Interesting -- DOS format magtape. 6.3 filenames...
> Some of the command files on that tape look like RSX ones, and some
> are RSTS ones. Makes sense; compilers and things like that built for
> RSX generally run just fine on RSTS (in RSX emulation).
Which reminds me... students at Groningen University wrote a multi-tasking
system for the PDP that was loosely based on EMAS (big mainframe system
>from Edinburgh, sort of like Multics but better). I remember one feature
of the OS was that it used an RT-11 format disk structure for raw storage
even though the user view of files was quite different. For example
I think RT-11 had version numbers (in the style of VMS), but GUTS
showed only the top-level file, and had a "pop" command which deleted
the most recent file and made the version below it visible.
The source is lost (though we do have a disk pack which *may* contain
the OS, if it is still readable) but a scan of the three-book report
is available online: http://history.dcs.ed.ac.uk/archive/scans/guts/ -
Orange is the users guide; Red - system design; Yellow - selected
source listings.
Edinburgh was also fairly big on PDP11's, having written a few operating
systems for it. The british networking operations ran on PDP11's
for years, on an O/S called DEIMOS. (Binary disk images online
at http://history.dcs.ed.ac.uk/archive/os/deimos/ ; sources also
at http://history.dcs.ed.ac.uk/archive/os/emas/emas2/deimos/ - the
binaries ought to work in an emulator; I haven't tried them myself)
Deimos was also used for the front-end terminal servers at Edinburgh,
and as the basis of the Edinburgh Remote Terminal Emulator (ERTE)
which submitted jobs as if they were typed by remote users, to
do accurate performance monitoring without the Heisenberg interaction
of measuring the performance on the system itself.
This has no relation to the 'fuzzball' arpanet routers, written
by David Mills (of NTP fame) who was also at Edinburgh at the time.
Another PDP/11 O/S was "MUSS". There's a manual page for it
here:
http://history.dcs.ed.ac.uk/archive/os/emas/users/ercm09/emas-2900/docum_mm…
I think the sources of MUSS along with the FEP's and ERTE are in
that directory somewhere too. DEIMOS, MUSS, ERTE and the FEPs
were written by Brian Gilmore, now head of the Computing Service.
Ian Young wrote an operating system for the PDP-11 called "rats"
as a student project - I believe he has a paper listing which we
might have scanned some day. That was the first implementation
of lightweight threads that I remember seeing.
All the Edinburgh software was written in Imp, except for a few
assembler parts, but we had our own assembler for it as well:
http://history.dcs.ed.ac.uk/archive/os/emas/users/ercm09/emas-2900/asst11j.…
There were two compilers for the system; one written by the ERCC
based on a simpler bootstrapping compiler called "SKIMP" -
http://history.dcs.ed.ac.uk/archive/languages/imp11-tmp/imp11/sk11v.imp
... and a later one written by the Computer Science department for the
Imp77 language:
http://history.dcs.ed.ac.uk/archive/os/emas/users/ercm11/emas-a/imp119s/
(and a very early version of the above, we think:
http://history.dcs.ed.ac.uk/archive/languages/imp11-tmp/earlyimp11/ )
There's a good writeup of the pdp-11 imp compiler optimisations
here: http://www.gtoal.com/athome/edinburgh/imp/PDP11IMP.htm
Graham
"Streaming type" front loader 9 trk drives are a dime-a-dozen - there's a
couple on the shlf at WierdStuff for $50 and that's about half too much -
but there are plenty of the Cipher 880s, HP and M4 Data drives out there.
--
I'll take every M4 9914 you can find for $25...
880's are a dime a dozen. M4's are not.
d
Does anyone know when blue LEDs first became commercially available? The
pair of Apollos that arrived at the museum yesterday both have
rectangular blue LEDs fitted alongside the amber and green on the front
of the machine - the systems date from 1990 though...
It's possible that someone's fitted them years later of course! They
certainly make the systems stand out though :-)
cheers
Jules
It only runs on 220v, mfg by Commodore, Germany.
It's of little use to me, maybe somone on the other
side of the Atlantic could use it (I'm in the US).
Jeff
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Thank you for your attention . . . .
Jeff
________________________________________________________________
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Hey! If no one has claimed the PDP-11 assembler book, I would
be interested. . . ..
Jeff
On Sun, 24 Oct 2004 20:53:38 -0500 "Jay West" <jwest(a)classiccmp.org>
writes:
>
> > Jay, I have a copy, copywrite 1980.
> Darn, I should have read through all my email first... Someone
> pointed me to
> a copy online outside of ebay and I bought it there :\ That'll teach
> me.
>
> > BTW, you never answered on if you wanted the 11/45 book I had...
> 11/45 book? I'm not sure which one you mean, but most likely I'd be
> quite
> interested in it. I think someone offered me a dec handbook which
> included
> the 11/45, but not sure if that's what you're referring to. Let me
> know!
>
> Regards,
>
> Jay West
>
>
>
>
________________________________________________________________
Speed up your surfing with Juno SpeedBand.
Now includes pop-up blocker!
Only $14.95/ month - visit http://www.juno.com/surf to sign up today!
Jay, I have a copy, copywrite 1980. Does not appear to have been written
in (notes). It does look like there is some discoloration on the top,
perhaps something sprayed over my books and some got on the top edges.
It did not penetrate very far, and can only be seen barely on the top
edges of the pages when looking through the book..
You can have it. Sometime by me a coffee. It's not worth sending
anything to cover postage. I need an address.
Joe Heck
BTW, you never answered on if you wanted the 11/45 book I had...
Hi, gang,
For those working with Qbus or Unibus DEC systems: I've just posted a Vector dual-height prototyping board for auction on E-pay. If you're interested, a search for item #5133752396 should reveal it.
Thanks much.
-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner & Head Hardware Heavy,
Blue Feather Technologies -- http://www.bluefeathertech.com
kyrrin (at) bluefeathertech do/t c=o=m
"If Salvador Dali had owned a computer, would it have been equipped with surreal ports?"
I just got some HP calculators!
Now I have some questions :^)
--Anyone have a spare manual for either?
--Have pointers on replacing the battery pack on the 55?
(it seems to be 3 AAA nicads)
--Anyone have any pointers on cleaning up leaked nicad crystals?
what is that stuff anyway?
I do have cases and power suplies.
-- I took apart the 25's battery pack and replaced the nicads with
nickel metal hydride cells (the same ones I use in my camera)
-- Is is ok to run the 55 on wall power supply without a battery
pack installed?
Will trade the 55+case+powersupply+leakybatteries(in a ziplock bag)
for complete set of docs for the 25 + 1 good application book,
preferably games :^)
Well, I finally have a true DEC bit of hardware in the form of a old DEC
Multia VX40. (166Mhz Alpha, 64MB RAM, 3.5" floppy, 1GB SCSI)
(Its almost properly on-topic from the dates I could find.)
I've cleaned out the dust/cigarette smoke, and bought myself a little
SCSI1->SCSI2 adapter so I can get the SCSI external. (As well as
another 32Mb of memory while I was at it. - it was cheap - and there
were empty SIMM slots)
The original 1GB IBM SCSI drive appears to have been the victim of true
sticktation. The drive started spinning after I whapped it a few times,
so I don't trust it.
I've got an 18G (Sun) external disk, and CD-ROM I can plug into it, and
the intention is to install OpenVMS Alpha 7.3-1 on the thing.
Anyone have an non-obvious words of wisdom before I start installing VMS
onto it?
(I gather getting VMS on a Multia isn't officially supported, and a bit
of a trick. )
Thanks,
David
On Oct 24 2004, 11:22, John Foust wrote:
>
> I recently inherited a stack of Fibre Channel gizmos made by Compaq:
> three x12 hubs, a tape controller, and a Storageworks modular
> data router.
>
> eBay prices are all over the map: some sellers trying to
> unload them for $1000+, but the real auctions are going for
> less than $50 for each box. Each slot in the hub needs an
> optical transceiver; these seem to sell for $10 each.
> Cables? Many offered, few bidders. FC hard drives? $20 each.
>
> This stuff cost a fortune not so long ago. Why is it
> rock-bottom now? Will it ever be attractive to hobbyists?
Because serious users have upgraded and the cast-offs aren't very
popular, I suspect. To users who think SCSI is odd, FC probably seems
wierd for words (look at the interface on the back of those drives).
They also tend to be small and relatively power hungry, compared to
cheap ATA drives, and how many cheap FC-AL PCI cards have you seen for
a PC?
I've got some FC-AL RAID stuff, but it's on an Origin 2000, and anyway
it's all 9GB drives. Hardly something buyers would fight over.
--
Pete Peter Turnbull
Network Manager
University of York
I just dug up a huge 9448 cartridge module drive from magnetic peripherals
here.
Anybody interested in this beast ? Takes about 2 persons to carry it.
I have no idea what the status is of this machine. The only thing I can say
is that when turned on no smoke comes out and no fault lights come on. I
just makes a nice humming sound ;-)
Cheers,
Stefan.
Probably a well-known fact for anyone with a TA Alphatronic PC, but I
didn't know this...
Seems that a company called Matmos bought up a large number of machines
>from a 'major European office equipment manufacturer', rebadged them,
and sold them on (no idea of date unfortunately).
The machine in the picture on the flyer I have is definitely a TA
Alphatronic PC though. The 'nice' thing is that all the systems were
shipped expanded with CP/M and twin 5.25" inch drives.
Just passing this info on because as I recall most Alphatronic PCs
shipped by TA were without the drives and necessary expansion unit (I've
got three of the darn things used as dumb terminals), so if anyone wants
to make a slightly more useful system, keep an eye out for a Matmos
PC :-)
cheers
Jules
While we're on the topic of 1/2" tape drives, anyone want an HP 7980A (HPIB
interface, not SCSI) that can either pick it up in the Seattle area or want
it enough to pay shipping?
I recently came into a few Imation Travan DC-2000 and MC-3000 cleaning
kits. New in box. Would they be of use to anyone here?
Jim Arnott
Union, OR
Leopards break into the temple and drink to the dregs what is in the
sacrificial pitchers; this is repeated over and over again; finally it
can be calculated in advance, and it becomes part of the ceremony.
-Kafka
Does anyone know anything about 1/2" tape cleaners?
I remember (I think) seeing a device in the tape library of the giant
insurance company I once worked for.
This device, if I remember correctly looked like an audio open reel tape deck
but would take a 1/2" (9-track style) tape reel on one side and had a take-up
reel on the other.
If I remember correctly the tape passed over a "spinning wheel" which
had slots in it. I think this wheel would "clean" the tape.
It's all a bit hazy now, but I think this device was used to clean and
re-tention 9-track 1/2" tapes. (the # of tracks does not matter, but I say
that to give the proper context).
Anyone know of these, have one, know of one, or if they work and are safe?
I have some (well, many) 9-track tapes which were stored in a very poor
(read humid) environment. The look like they have mildew on them. I'd
like to try cleaning and re-tensioning one and, after baking, see if it
will read.
Seems like one of these devices would come in handy.
Any experience?
-brad
If anyone's interested, I have listed a couple of Apple IIc Pluses
at http://marketplace.vintage.org. I also have the external 3.5"
floppies
for them as well . . . .
Jeff
________________________________________________________________
Speed up your surfing with Juno SpeedBand.
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As promised, the update.
The last version I received from Pete is indeed the OnTrack 7.09 version
that works with all disks. GREAT STUFF!!
It recognized immediately my HP C2965A.
On that drive it says: 988 cyl 16 hds 52 sect 420.8 Mb
OnTrack maps that differently, but what the heck: it works perfectly.
A bit strange though is that I have a C: (boot)partition of 420 Mb *and*
a D: partition of some 418 Mb. The drive clearly says 420.8 Mb, but
OnTrack says 818 Mb ....? Perhaps word -> byte? just guessing.
Anyway, the DECpc 320P is on its way to run E11 and SIMH!
At least, the PDP-11 simulation runs on a PC .... but it's a *DECpc* :-)
thanks for all replies!
- Henk, PA8PDP.
PS. Dave, if you find a newer version I would be glad to receive a copy
to store it for later requests. Think of your version being backed up at
an other continent :-)
>
does "clean" mean "erase"?
--
Since they are still around, see if you can get a manual. It will
probably be $100 to ship the unit, even if you get it for $50. They
may support cleaning a tape w/o certifying it. Also check if there
are consumables (the older Kybe units have a loop of cleaning tape
that I haven't been able to find a source for) required for this
unit. I didn't see any supplies listed on their web page.
By mistake I deleted the message that had the URL for downloading the
G4TechTV's The Screen Savers TV show with Sellam, does anyone remember what
it was? I have downloaded the BitTorrent client to view it with. Thanks
> So what kinda pie do you want, Sellam? ;^>
LOL, but seriously Roger, that was a perfect explanation!
BTW. good tip to make a backup floppy with a Clear Label on it.
- Henk, PA8PDP.
-----Original Message-----
From: cctalk-bounces(a)classiccmp.org
To: General Discussion: On-Topic and Off-Topic Posts
Sent: 23-10-2004 17:18
Subject: RE: access to BIOS of DECpc
Rumor has it that Vintage Computer Festival may have mentioned these
words:
>On Sat, 23 Oct 2004, Gooijen H wrote:
>
> > A short update on my efforts ...
> > The Fujitsu-OnRack version did what was to be expected: it checks
and
> > sees that there is no Fujitsu drive in the PC and stops :-)
> > Sorry to say that the version from Pete is for Western Digital
drives
> > and shows the same behaviour :-(
> > I found a gfew manufacturer versions, but not for HP &%$#@!&
> > However, there is till hope at 2 fronts: the version Dave will dig
up,
> > and there is one on auction at eBay (for just a few $$). If I will
be
> > the lucky winner I will share the data on the disk with everybody
that
> > is interested in a copy. It looks like this is an *original* OnTrack
> > version that works with drives of any manufacturer. It's version 7
...
> > I'll report back later.
>
>Maybe this is a dumb suggestion, in which case I invite folks to throw
>pies at me while I'm stripped down nekkid (note: I might like it),
If you're talking Lemon Meringue fresh outta the oven, I doubt you'd
like
it (well, not for *long*, anyway! :-O )...
>... but
>what about using a boot manager instead? Would it not accomplish the
same
>thing?
Noper, two totally different critters.
Boot managers just *replaces* the standard MBR with a customizable MBR
so
you can boot multiple OSs. It has nothing to do WRT disk geometry or
sizes.
Linux's Grub is a good example. (LILO can do it too, but it's a little
less
forgiving of other operating systems.) Even Winders NT/2K/XP boot
manager
can be twiddled enough to boot Linux, tho it's *not* easy to do.
Individual
partitions are easily accessible from other OSs as the geometry is still
derived from the BIOS/HD itself.
OTOH, OnTrack (and others) actually "off-shift" the MBR and add a
"pre-loader" which adds a BIOS patch to give the BIOS the ability to
recognize larger HDs, or HDs with odd geometries. Then once it loads,
the
off-shifted MBR is then called and the computer can boot normally. If
this
BIOS patch is *not* loaded first, then the computer cannot accurately
recognize the HD geometry, partition sizes or locations, etc.
On the plus side, it's *very* handy every time an idiot PeeCee
manufacturer
decides to hard-code YADAHDL (that's "Yet Another DumbAss Hard Drive
Limitation... ;-) -- First 32Meg, then 528 Meg, then 2Gig, then 8 Gig,
then
80Gig, then 127Gig, and I'm sure there's others in between I've
forgotten.
This code allows a computer with a 528-Meg BIOS limitation (or older
computer who's BIOS doesn't have customizable entries) to utilize larger
HDs.
On the minus side - He who uses this software had better take care on
having a good backup plan in place that does not require this software!
As
the geometry's been "jumbled" to make it work in that environment, if
you
yank the drive & put it in another machine, the partitions won't be
recognized or anything. With OnTrack and some others, you *could* set up
a
boot floppy with the special code so another machine (if booted from
this
floppy) could read the partitions & whatnot, but guaranteed, as soon as
you
need that floppy, you won't be able to find it... ;-)
Hope this helps,
Roger "Merch" Merchberger
So what kinda pie do you want, Sellam? ;^>
--
Roger "Merch" Merchberger | A new truth in advertising slogan
sysadmin, Iceberg Computers | for MicroSoft: "We're not the oxy...
zmerch(a)30below.com | ...in oxymoron!"
On Oct 23 2004, 20:35, Stephane Tsacas wrote:
> Folks,
>
> Another fat SMD, Eagle like drive on ebay :
> FUJITSU LIMITED FIXED DISK UNIT # M2294K ~VERY NICE!
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5132599282
They're nice drives -- I have one -- but the seller has mis-described
it slightly. It's not "missing the power cord". The power cable is
what you can see in the picture, lying on top of the HDA: the cable(s)
with three big AMP (or Molex? I forget which) connectors on the end.
What's missing is the PSU, and you won't be running *that* drive off
an ex-PC PSU. It's also missing the outer halves of the mounting rails
(the parts that fit to the rack), the SMD terminator, and the front
panel.
--
Pete Peter Turnbull
Network Manager
University of York
> >Like this one?
That is a certifier. It reads and writes on the tape.
http://www.datadev.com/mark350.html is more like what he is
looking for, although I wouldn't trust a tape in poor condition
on something that spun at 350 ips.
Any Apollo users out there?
A chap dropped off a couple of Apollo 400t machines at the museum today
(circa 1990 vintage) with numerous manuals. First time I've seen one in
years - I remember a room full of them at uni behind a glass partition
wall, not usable by us mere mortals, and always wanted to get hold of
one since then.
Initial questions from the 5 minutes I had free today to actually *look*
at the things (damnit!):
Anyone (hopefully in the UK!) got a spare Domain keyboard? Both machines
work, but only came with the one keyboard :-( I have a feeling the
chances of finding one are something like zero...
Anyone got install media preserved anywhere? (We've got a backup CD,
plus I'll image the hard disks - but a copy of proper install media
would be nice)
How's the Apollo token ring network physically configured? Presumably
something somewhere needs to bias the line at the very least? (We got a
cable with each machine that brings the card connector out to a pair of
BNC plugs)
Any idea what tape drive the systems used (I've seen reference to
optional tape drive in the manuals) and if it was just a SCSI device on
the bus, or whether it used a custom controller?
Any other UK people got any more Apollo stuff they no longer want? ;-)
cheers!
Jules
Hi - does anybody know of any copies of the KA640 Tech Manual online? I
think i've got a blown DSSI picofuse* and i'd like to have a casual flip
through the manual whilst i'm away from the system.
I've searched Manx and poked Google, both turned up nothing.
Cheers guys
alex/melt
* Terminator not lighting up, first disk in chain never coming online, CPU
"Normal Operation Not Possible" errors
I have 4 Olicom OC-3137 cards available for $3 plus shipping (for the lot,
not each). Or, make an offer if $3 sounds like too much.
Shipping would be from New Jersey, USA. I will ship them anywhere you're
willing to pay for. They are Token-Ring PCI/II 16/4 Adapters.
I don't know many people that could use these so I thought I would offer
them to the list.
For drivers and other info see:
http://www.olicom.com:8080/index.asp?item=947
First come, first serve.
Kelly
