So what is the actual harddisk in a lisa 2/10 ?
I believed it to be a ST412, but the HD coverplate that is inside my
Lisa does not match the ST412 in my 11/23 homebuilt ( not by me).
The coverplate is, sadly, all that remains of the Lisa HD. The actual
platter and heads have been trown away by the previous owner.
Jos Dreesen
The V20C that I just tested was acquired in
Montreal about 2 years ago. I acquired a
number of RK05 media along with an RK05
drive.
--
And Eric Smith has an empty spot in one of
his racks that he travelled across the country
to pick up, along with no software for the
machine thanks to your 'rescue' efforts.
Hi all,
Although my friends in South Park would hate me for sending this
out... I need some help from someone in Canada, to buy something
thats only available there, and not in the U.S. or Europe..
Pse contact me offlist if you can help..
Thx,
Fred
--
Fred N. van Kempen, DEC (Digital Equipment Corporation) Collector/Archivist
Visit the VAXlab Project at http://VAXlab.pdp11.nl/
Visit the Archives at http://www.pdp11.nl/
Email: waltje(a)pdp11.nl BUSSUM, THE NETHERLANDS / Mountain View, CA, USA
Does anyone have any information on ANY Multibus cards made by Advanced
Micro Computer?
--
yes
send along the part numbers (probably four digits starting with 9xxx or 4xxx)
and i'll put them up on bitsavers.
>From: ard(a)p850ug1.demon.co.uk
>
>> I am having problems getting enough information to make my Emulex
>> SC70 masbus disk controller work. If I have to repair it, I'm will
>> be in serious trouble. I doubt that I will be able to locate a
>> schematic given that I am having so much difficulty locating just
>
>If it uses standard chips (i.e. data sheets exist), then it can be
>reverse-engineered!
>
>> a manual. The SC70 uses a 16bit 290x bitslice processor, so after
>> those parts are no longer available, even though it would trivially
>> fit into a small FPGA of the time, and even if the logic levels are
>> compatible, reprogramming an FPGA to do what the 290x does will not
>> be a trivial task.
>
>OK, the 290x chips are not simple, but data sheets exist, so it should be
>possible to make an FPGA do the same thing.
Oh come now, the 290X parts are not that complicated. The 2901 is just
an ALU. I don't think there is anything in this series, including
the 2916 that can't be easily implemented in todays technology. In fact,
I'm sure you can even buy off the shelf models for these. I've seen
things like 8051's and 6800's for those that need that fuction in
a fpga.
Dwight
>
>>
>> Just imagine trying to repair all of the proprietary components
>> in a PC or even the CAD program dongle 50 years from now.
>
>I knew there was a reason why I stuck to classic computers ;-)
>
>-tony
>
I was trying to organize some E11 stuff, spread
over several computers, and could not get my
rk05/RT11v2B to boot.
Some years back when I first loaded these images, I
thought these had booted for me, but maybe my memory is
playing tricks on me. Anyone ever succeeded in
booting v2B under E11?
-nick o
Well, the HP2K system restoration is done (except for the rails for the
paper tape punch, but those aren't visible, it's temporarily mounted
anyways). I've been through several sysgens and all is perfect. Even typed
in a program I had a listing for that I wrote in high school that creates
word search puzzles :)
For those wondering, yes, I can confirm, 7906 drives (non H models) work
wonderfully, you just don't get to use head 3 (at least for variants of TSB
that support 7905's - variants that support 7900 or older (E) of course will
not work with 7906's). I ran into a problem with the 7970, turned out to be
a tape reel lockdown mechanism was faulty and the reel was slipping during
use. That's fixed too. I am suprised how much heat the system generates!
Now I'm looking for HIB tapes to get a respectable system library. I also
ordered a wireless card for my PC downstairs, so I will be putting
2000/Access online via telnet for just a little while. Many people requested
dialup access, but I think telnet will be easier.
I want to give an extra special thanks to many people who have helped me
along the way - Craig and Larry at Crisis Computer (call them for HP parts,
great guys!), Al Kossow, Eric Smith, Jeff Moffatt, Bob Shannon, Stan Seiler,
Frank McConnell, Bill McDermith, and... everyone on the classiccmp list for
years of help and advice on various issues.
What's next? Hummm restoring an HP 2610A printer? Or my 11/45? Or upgrading
my 8E to use RK05? Or maybe finally getting back to hpemu? We'll see!
Thanks very much folks!
Jay West
PS - Al, my MCP tapes are fine. It was the tape reel slipping that made me
think it was bad!
Sifting through ye ol' computer shed, I brought down two alpha 255's I
intended to combine and make one working machine.
I was not too surprised to find that the local field mice had got inside the
case through an open pci-slot cover and had made a nest.
I cleaned out the seeds and wadding and mouse doody, but I need to probably
clean to motherboard from mouse urine.
Any suggestions??
I know urine can have a possible corrosive effect so I want to make sure I can
clean the MB thoroughly, before attempting to put it back together.
Cheers,
Tom
Hi, gang,
I have an Atlantic Research 7000 series datascope that is dependent on an MFM drive to run itself. It works fine at the moment (testament to the durability of early drives, I suppose), but I would like to be able to take an image snapshot of its hard drive in case of failure.
With that in mind, I'm starting to accumulate a small variety of MFM controllers (going for variety because I have no idea what the determining factor is going to be in which controller is able to read the drive).
So far, I've found a WD1002-WA2 and a WD1003-WA2. I still have memories of the last and (supposedly) best MFM board that WD made, in the form of the WD1006V-MM2, but I've had no luck finding one as yet (nor do I know if I really even need one).
Suggestions for what to go after would be greatly appreciated.
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?"
Hi Tony,
i read an email of you in internet about HB 9825B.
I would like to know if the CPU of HP 9825 works with little endian or big
endian format. Do you have any information for me about this old computer ?
I'm trying to write a small testprogram (windows 2000 / VC++ 6.0) for
directing the HP analyzer 4145A. Its manual has a sample program for this
computer 9825B.
If you have any information for me ... it is very nice.
Thanks alot
Hoang
