I'm still digging. I found more 550 stuff. I think this is everything
that came with the 550. Here's a chance for you 550 owner's to get the
whole set at one shot!
Original DS-DOS box and invoice.
Original Sanyo Easywriter ver 1.3 disk
Original Sanyo disk box with 550 dos ver 2.11 and BASIC 1.25, two
original Sanyo disk for InfoStar (set B disk 2 and 3 of 4; disks 1 and 4
are below), original Sanyo disk for DOS 1.25 and BASIC ver 1.1
Original Sanyo disk box with all three original disk of set A, WordStar
and CalcStar and a backup copy of DS-DOS.
Two card board dummy disks used to protect the floppy drives duing shipment.
>A few weeks ago we were talking about the Sanyo 550 series and someone
mentioned one of the alternates operating systems that supported 80 track
drives in the 550. I said that was DS-DOS by Michtron.
> Today I found an old Sanyo disk package with four disks for the 550. One
of them is DS DOS 2.11, one is InfoStar, one is MailMerge/SpellStar and the
other is a disk of misc utilities. The first three are original disks. In
additon, the InfoStar, MailMerge/SpellStar are Sanyo labeled disks that
came with the 550. If anyone wants them, trade me something I can use and
they're all your's.
I recently filled the car with these:
Apollo DOMAIN Series 3500
Domain series 3000 model 3010
HP/Apollo series 400
(2) Sun 3/60 + tape drive and tapes
Apple lisa 2
(2) apple II Ci
Mac SE/30 with radius monitor
Mac color classic
power mac 7200/90
Also available was a volker Craig terminal, and a copy
I also have "quite a pile of HP 712/715/725s in various
condition" for me to pick up when I get some space cleared.
IKEA has said that the missing piece to complete the
shelving will be delayed another 3 weeks, and my wife says
no more machines until the shelves are up!
hey do you have any ideas about using relays or some thing connected to a parallel or aerial port to control the power to an outlet, you know like a dimmer switch controlling motors ETC
if you have any thought or ideas I'd be glad to hear them.
I am getting my PDP-11/34 and my RK05 disk drives and packs tommorrow, and I have a few questions.They have have been in storage for years, and, although they have been kept dry, they are probably dusty. Can anyone tell me how to clean the drives and the disk packs before I use them?
If the image is square but just tilted then the fix is usually easy. The yoke
is twisted on the neck of the CRT. Take the back off the case. Locate and
loosen the locking screw, normally only one. Rotate the yoke to correct the
tilt. Be very careful, many loose high voltages. I like putting a mirror in
front of the screen so I can see where I put my hands.
Well, plugging the Unibus end of the DW11 into the Q-bus didn't kill it,
but plugging it into a Unibus slot BACKWARDS did.
(What is it with me and absolutely stupid mistakes? Geez...)
At least I think it did. On applying power, I got smoke, but no pop.
The chip I crisped isn't marked with a U number, but, on the M8217 end,
it's in the bottom row (Just above the bus pins), 4th from the left edge
of the card (I'm holding the card with the component side facing me.)
The chip has a bad smell and is slightly discolored.
All the others look OK. The chip was also very hot when I cut the power and
yanked the card out. I was too busy trying to keep the cat from climbing
inside the box to pay attention to the card. Next time I shut the door.
Assuming there IS a next time. If I can't revive this card, or find a
Unibus RL02 controller in 4 days, this project dies. (I can't have the
large toys here after Friday. I can only have what fits under my bed,
which is the 83 and it's RL02.
So anyway, the chip is marked as follows:
There is no vendor ID, just a little mark like 2 lightning bolts in paralell
(Like a jagged = sign). So, the questions now are...
1. What's this chip, and what does it do?
2. Can I replace it, or am I just screwed?
3. Is there a way that with only a voltmeter (I don't have and can't
afford a scope) to verify that the chip's dead? (I'm overly
4. What stupid mistake am I gonna make next?
My bets are that the tape drive will be dead for some reason
and I stomp on the RSTS tape, or get halfway thru the restore,
hit a bad block on the tape, and end up with an unusable drive.
Failing that, I'll either crash the RL02 (I only have one pack)
or find a way to nuke the 83 and the 34A at the same time.
(For refrence, I went and got a PDP-11/34A to use as the UNIBUS end of this.)
And yes, I know I misspelled parallel, I'm just too lazy to fix it.
I recently acquired a nice, rust-free, mostly-original 11/45 from
an old lisp hacker in Los Altos Hills, CA. He told me that it had been
running the last time he'd powered it up, which was in 1984 IIRC, but
sadly, something has gone awry and it won't run now, though it seems to be
close. Here's a brief summary of its status:
It was originally a five-rack system with each rack containing the
controllers for the housed peripherals. The bus was chained through to
each rack on a BC05 and terminated with an M930. I only took the
processor and the TU-10 racks, so to make troubleshooting easier, I
reduced the system to only the CPU and memory boxes (memory is a 220KB
box from Monolithic Systems that has unibus in and out). The processor
has 12 KW of core as well, so I guess I could cut the bus down a bit more
for the purpose of debugging.
Mode of failure is such:
I powered up the shortened system and the front panel lights lit
[excitement]. Then I tried to examine some memory locations via the
panel, but when I hit HALT, the RUN light stayed lit. I tried every
combination of switches I thought was appropriate, but the RUN light
wouldn't go off. (Sounds like a simple bus error, really.) Upon
realizing that something was amiss, I decabled all the power connectors
>from the logic and tested the voltages, which, surprisingly, were all
about 6%-9% above spec (and I'm not too sure that my VOM is accurate even
though it's analog). I didn't readjust the voltages, but reconnected the
power cables to the logic boards and retested the voltage levels. All
stayed about the same except for the -15VDC. It dropped to about 2V. Same
reading on both -15V regulators, by the way, and they seem to be connected
to different areas of the backplane, but I'm not sure. There seems to be
a high-pitch squeal (that sound of a laboring regulator) coming from
somewhere in the power supply cluster, but there's no smoke or crackling
sounds. I don't remember noticing the squeal with the power cables
disconnected, but that may be a subconscious hope and not a fact.
So that's my predicament. I don't have much time to mess with
this beautiful old girl, so I hope someone here can increase my repairing
Help me save this great piece of computing history. In return,
I'll at least give you an account on it if I get it to the point where
it'll run 2.9BSD or V7. I have SMD interfaces and disks, etc and
everything else I need (except a DELQA) to get it hooked up to the net.
Thank you in advance.
>> back. The rollers and paint were even in good condition. After chatting a
>> bit, the seller said we should make an offer. While I was pondering if he
>> would take $50 or $100 for it and if I could justify that (I was in grad
>> school at the time), my wife piped up and asked "How about $15?" My college
>> chum and I just stood dumbfounded while the seller thought for a second and
>> said "Ok." And that's how I ended up with my rack.
>I've found that making lowball offers sometimes is the *best* way to get
>things from certain surplus outfits. Two places that I frequent seem to have
>a tendency to accept offers for less than $25, but reject offers above that
>amount (on similar sorts of items). My guess is that if you offer over $25,
>they start to think that the item is valuable and that they should get a lot
>of money for it.
OTOH, I've learned that if you want to get rid of something, you shouldn't
necessarily just say "it's free, come and get it". After all, many potential
takers think that if it's free, it can't be all that desirable. But attach
a price tag and all of a sudden folks want to come up and wheel and deal!
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