Okay, How do I re-install the double LED power indicator? It doesn't
have a screw holding it, it doesn't seem to push into anything, and I
have a clear piece of plastic that I don't have a clue about.
How does this thing stay in place? When I took it apart I think it
pulled out of the top part of the case.
Chad Fernandez
Michigan, USA
http://www.allelectronics.com/matrix/7_Segment_Displays.html
0.3" character height, red or green.
-----Original Message-----
From: Jim Kearney [mailto:jim@jkearney.com]
Sent: Monday, June 03, 2002 1:09 PM
To: cctalk(a)classiccmp.org
Subject: Re: [OT] Need 7 segment displays...
>From: "Gene Buckle" <geneb(a)deltasoft.com>
> I'm trying to find some VERY small 7 segment displays. I need a part
> that's small enough that 5 digits will fit into an inch long area. I'm
> not having any luck and I'm hoping someone here might know where I can
> find them.
I don't know where to find them, but LED calculators in the 70's sometimes
used 4 digit modules with a DIP-16 form factor. They looked like 4 bubbles
on top of a lead frame. That would make them about 3/4" for four; but I'm
not sure how you'd get 5 unless you could also find a 'single'.
Not very helpful, I know, but perhaps a step in the right direction...
Hi,
I recently picked up a card and external box for the Apple II. Both say Don Johnson Development Equipment Inc Adaptive Firmware Card and the box also says I/O Box. The box connects to the card via two short ribbon cables and has a 36 pin male Centronics style connector, two banana jack sockets, rocker switch and a LED on it. I picked this up in Topeka, does anyone know what it is?
Joe
>From: Joe <rigdonj(a)cfl.rr.com>
>
>
>>Probably a shorted decoupling capacitor (if it's a 'dead short' or close
>>to one). I have been known to carefully cut power traces to find out
>>which section is shorted, and then home in on the problem.
>
> That's the way that I've traced shorts down. However since then I've bought a HP Current
probe, they're supposed to be able to trace a short down the correct path. I've never had a need
for it since I bought it so I dont know how well it works. Has anyone had any experience using
one?
Hi
I've used a current probe a number of years ago and found
it worked OK for trace short, when they were accessable
on the surface. I've since found a method that works fine
for me, using standard bench top items. You need a 4 or 5
voltmeter that has at least a 200 uV range and a current
limiting power supply.
What you do is to place about a 1 amp current from end to
end of the curcuit that is shorted to another curcuit.
Do not place the 1 amp through the short. This will generally
create a 20-100 uV drop across the curcuit. Now, clip one
lead of the meter on the other curcuit ( the one that this
curcuit is shorted to ). With the remaining lead, trace along
the curcuit with the current flowing through it. When you
get to the point where the short is, the voltage will be zero.
On either side, the voltage will be plus or minus, telling you
which way to go. Check the meter regularly for offset by
connecting both meter leads together. This will help you especially
when you get close. For curcuits with branches, you may need to
move where you put your end to end current to follow another
branch.
This method also works for power planes. Say there is a bypass
cap that is shorted someplace. Place the current source on
opposite corners of the board and trace until you have a line
( usually curved ) across the board that measure zero ( I usually
tape a piece of string along this line ). Move the current source
to the other corners. Again, find the line. Where the lines
cross, you'll find the short.
There are variations of this method that I've used to find
multiple shorts.
Dwight
> From: Gary Hildebrand
>
> I just came acrtoss this ---- there might be some good sources in here
> for goodies. My gold mine in Topeka is part of this list, so I'm
> betting on at least a couple more . . . . .
>
>
> http://www.recycle.net/computer/used/index.html
>
>
Seems like a decent resource... Did you happen to notice the Titan
Trailers ad/link at the bottm of the page? ;)
--
--- David A Woyciesjes
--- C & IS Support Specialist
--- Yale University Press
--- (203) 432-0953
--- ICQ # - 905818
Mac OS X 10.1 - Darwin Kernel Version 5
Running since 01/22/2002 without a crash
> From: Sellam Ismail <foo(a)siconic.com>
> Whoever tells you the checks are "random" and not based on ethnicity or
> appearance is just trying to be PC. I'm sure there is a bit of
randomness
> involved, but that's for the non-Arab, non-Muslim flying contingent.
> There's only been one time out of perhaps ten where I didn't have to go
> through the extra pre-boarding check before a flight.
No offense, Sellam, but this only seems natural to me. I'm sure the
airport security checks have gotten a bit tiresome, but we recently were
attacked by Arab Muslims, and several thousand people died. If we'd been
attacked by Irishmen I'm sure we'd be taking a harder look at them, too.
Glen
0/0
Come to think of it, the gas shocks do somewhat remind me of the ones on the
rear gate of my subaru station wagon... or on the hood of a BMW... hmm...
Will J
_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp.
I just came acrtoss this ---- there might be some good sources in here
for goodies. My gold mine in Topeka is part of this list, so I'm
betting on at least a couple more . . . . .
http://www.recycle.net/computer/used/index.html
Gary Hildebrand
St. Joseph, MO
> From: Andreas Freiherr
>
> Gunther Schadow wrote:
> >
> > ... Then you can open the hood just like
> > in my car, check the alternator belt and I just haven't found the
> > oil dip stick yet :-).
>
> My trouble with it is that the "hood" always bounces back on the rear
> part of my head, because the pressurized gas retainers have lost their
> magic smoke in the cause of the years. I am convinced it's impossible
> and perhaps even dangerous to repair (i.e., to repressurize) them, but
> is there a known good source for spare parts?
>
> Without looking: are these parts the same type in a RA80 and in a RA82?
>
> I don't want headaches every time I adjust belt tension...
>
> --
>
(continuing the automobile analogy...) How big are the gas shocks?
Anything like the ones that hold up a hatchback in car? Auto part places
like JCWhitney.com sell replacements...
--
--- David A Woyciesjes
--- C & IS Support Specialist
--- Yale University Press
--- (203) 432-0953
--- ICQ # - 905818
Mac OS X 10.1 - Darwin Kernel Version 5
Running since 01/22/2002 without a crash
I've acquired a non-working Mac Performa 476. Unfortunately, I don't
have any other Mac gear to help me with the diagnosis. I've the
Performa 476 itself, which may or may not be working; I've got two
Macintosh Color Displays (M1212) which may or may not be working, and
one spare Performa 475 motherboard purchased from eBay. It was
advertised as pulled from a working system--but I've no way to verify
this. The seller was a reputable one, so I'm inclined to believe it's a
good board. The 475 motherboard is identical to that of the 475. The
difference between the two models being that the 476 shipped with a
larger internal HD.
When I power up the system, with monitor attached, the internal cooling
fan spins up, the hard drive spins up (and sounds normal), and the
machine chimes what I seem to recall as being the regular start up sound
for this era of Mac. However, the display remains dark. If I power off
the Mac, leaving the monitor on, the monitor makes a light
static/crackle noise; it's the sort of sound I normally associate with a
monitor that's lost the video input signal. I've played with the
brightness and contrast controls without any success.
If I switch the other monitor, the behavior is the same. If I switch
>from the orginal motherboard to the one I purchased on eBay, the
behavior is the same. It's possible both monitors are bad and/or both
motherboards are bad. I don't have a multimeter to verify that the
voltages coming out of the PS are correct. Nor do I know that the hard
drive is functional--but I'd assume that nothing needs to be loaded from
the HD in order to get the display to come up.
I'm a bit puzzled, and wondering if anyone here with insight on these
Macs and their displays can give me any additional pointers.
-brian.
AFIK, OCC never sold a composite adaptor themselves. The one I had was a
Monadapt by JMM (?).
I also have a copy of the Osborne 1 Technical Manual (Thom Hogan and Mike
Iannamico, copyright 1982). It describes the video circuit, with schematics
for the edge connector and brightness/comtrast pots, but it does not have a
schematic for a composite adaptor.
Bob
-----Original Message-----
From: Joe [mailto:rigdonj@cfl.rr.com]
Sent: Saturday, June 01, 2002 7:15 AM
To: cctalk(a)classiccmp.org; acme_ent(a)bellsouth.net
Subject: Re: Osborne 1 Video Adapter? (was:RE: IBM 026 Printing Card
Punch)
Glen,
Didn't I give you the Ozzy Technical manual? I think they describe their
version in there and I think they even include a schematic. IIRC there's
nothing in it except for two connectors and a transistor. I believe it
replaces the "Do Not Remove" plug on the front of the Ozzy.
Joe
At 01:02 AM 5/30/02 -0400, you wrote:
>> From: Feldman, Robert <Robert_Feldman(a)jdedwards.com>
>
>> I was looking through the Alltronics listings and noticed a TTL-Composite
>> video adaptor (http://www.alltronics.com/computer_miscellaneous.htm ,
>> #92C024) that looks like the adaptor I have for my Osborne 1!
>
>Robert --
>
>Please tell me more about this adapter. I like my Oz 1 but hate the
>screen. Where does it connect to the Oz?
>
>Glen
>0/0
>
>
Hi,
I think I haven't heard from Geoff of Oz for a while, are you still
around?
Came to think about Geoff because I have now blown two fuses of
VAX 6000's internal 110V power hookups (the main power box has
three what looks like standard 110V receptacles.) But not all
of them are equal, so it seems. The one that's not reachable from
the outside seems to be protected by a low-rated fuse. I suppose
now that this is where the backup battery is to be hooked up
an nothing else. I tried to drive an RA92 from there and it always
burned the fuse when the drive spins up.
I'm releaved now because initially I thought I might have destroyed
the drive (some inner short because of dust and dirt.) But it's
just that fuse.
Too bad that I can't power the second external receptacle. It's
this weird 3-phase conversion issue where you have to use the
phase that connects to this internal receptacle but not both of
those that connect to the two external receptacles.
How did you, Geoff, hook up both of your RA9x down in your VAX6400?
thanks,
-Gunther
--
Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org
Medical Information Scientist Regenstrief Institute for Health Care
Adjunct Assistant Professor Indiana University School of Medicine
tel:1(317)630-7960 http://aurora.regenstrief.org
Hi, I cleaned up my laundry/computerroom real nice. The two VAX6450s
now want to talk to each other (and not just stand side-by-side :-).
I have the star coupler attached to the wall, at a nice angle under
the staircase, which makes it really nice to connect the CI cables.
Can't wait to do IP over CI between the two.
So, I copied my Ultrix disk's / and /usr partition to another drive
and having connected the second VAX6k to that other drive on SDI
port "B" I could actually boot it with the generic kernel and so
forth. Then I found I was missing something, so I wanted to get back
to the first VAX and mount that drive again to add something to it.
But fron then on every attempt to mount or write to the drive from
port "A" causes the WRITE PROTECT LED to lite up quickly and then
the OS comes back with an I/O error on writes and a write restricted
error on mounts. I can't even do mount -r that drive. I tried
shutting down, spinning down, resetting, powering off and everything
I just can't get the drive responding to write requests from port A
any more. What is the magic here?
These drives seem to have a memory that lasts even when powered off.
Once I turned off the main breaker before the drives were spun
down. It does sound ugly, but they all work nicely still. And I
noticed that they remembered the "R" status when I powered them
on again. So, how can that memory really be cleared?
thanks for your help,
-Gunther
--
Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org
Medical Information Scientist Regenstrief Institute for Health Care
Adjunct Assistant Professor Indiana University School of Medicine
tel:1(317)630-7960 http://aurora.regenstrief.org
Brian:
How about the motherboard backup battery? I've seen a couple of Macs that
wouldn't display that worked fine after I replaced the battery. Check the
voltage on 'em. Of course, another known working monitor would be nice for
testing too. And even with no hard drive you would at least get the
"flashing question mark disk" icon.
Steve
Not being an Apple person this might not be germane. I have found differences
with the cables that attach the monitor to the computer. I had one cable that
plugged in but did not work. It was lighter in weight and IIRC was missing a
pin. I think it worked on an IIGS but not on a LCIII I was testing. I needed
the heavierweight video cable with no missing pins to get the LCIII to come
up.
Both came up in color but needed different cables.
Don't know why. As I said I am not an Apple person, although I would love a
G3 or G4 to play with.
Paxton
Astoria, OR
2- M7493-PA R440F Q R449F (S-box) to SCSI Converter
(free plus shipping)
1- fan drawer from R400X DSSI expansion chassis. I think this is the
same as any other BA440 style case, right?
(15.00 plus shipping)
Please contact me off list.
Chad Fernandez
Michigan, USA
Yes! It was very much like Antonio suggested, a good deal of previously
strangely behaving XBIA and XBIB boards were still working fine given
the proper environment.
I replaced the backplanes/cages for both XMI and VAXBI. I figured if
nothing else, the set I put so neatly into boxes last year would be
less exposed to dust and grime over the last year, and I did remember
that one of the vaxen, i.e., this particular one did behave strangely
even last year. Then step by step debugging with a little bit of
board reseating and everything works now. Yeah! This is my second
VAX6450 going online.
Did I mention that one of them is now a VAXvector 6450 (with one vector
processor right now because I still don't have more than one of the
little cables.) It's going to be a VAXvector 6440 V2 (BTW: how was
the number of vector CPUs officially counted?) and the other will
be a VAX 6460. Both of them have 512 MB memory, one has a KDM70 with
an SA600 with 8 RA90s the other now has the KDB50 with one RA90 and
one RA92 in the "basement" of it's cabinet.
I'm about to connecting the second VAX to the star coupler. And
then all I need to do is fix the HSC90 that still gives me a k.ci
error with status 111 (what the heck does that mean?) Then the
HSC90 will plug in the port "B" of all the RA90s and RA92 and uh
yes, there are also the RA81 and RA82, which I can't wait to
actually use.
My basement is going to be cleaned out now. It looks nice with two
VAX 6000 and an SA600 shoulder to shoulder.
Ah, yes, now I have an XMI and a VAXBI backplane cage spare. I
will get rid of it one way or the other. If you want either or
both, let me know. They are free for the taking or shipping. I'm
sure that only one of them is actually defect AND I'm sure the
defect could be fixed (I'd probably go with round in the
dishwasher or so.) If you need parts from one, that's fine too.
To know what's on them go to my VAX 6000 anatomy page. If I
don't hear by soon, I will screw off all the parts and let the
bulky stuff hit the dumpster.
regards
-Gunther
Here is the transcript of a working VAX 6450 selftesting:
>>> INIT
c123456789 0123456789 0123456789 01234567#
F E D C B A 9 8 7 6 5 4 3 2 1 0 NODE #
A A . . M M M M . P P P P P TYP
o o . . + + + + . + + + + + STF
. . . . . . . . . E E E E B BPD
. . . . . . . . . + + + + + ETF
. . . . . . . . . E E E E B BPD
. . . . . . . . . . + . + . + . XBI D +
. . . . . . . . . + . . . . + . XBI E +
. . . . A4 A3 A2 A1 . . . . . . ILV
. . . . 128 128 128 128 . . . . . . 512 Mb
ROM0 = V3.00 ROM1 = V3.00 EEPROM = 2.03/3.07 SN = AG94408846
>>> SHOW ALL
Type Rev
1+ KA64A (8082) 000A
2+ KA64A (8082) 000C
3+ KA64A (8082) 000C
4+ KA64A (8082) 000A
5+ KA64A (8082) 000B
7+ MS65A (4001) 0084
8+ MS65A (4001) 0084
9+ MS65A (4001) 0084
A+ MS65A (4001) 0084
D+ DWMBA/A (2001) 0002
E+ DWMBA/A (2001) 0002
XBI D
1+ DWMBA/B (2107) 000A
3+ KDB50 (010E) 142C
5+ DEBNI (0118) 0300
XBI E
1+ DWMBA/B (2107) 000A
6+ TBK70 (410B) 0305
Current Primary: 1
/NOENABLED-
/NOVECTOR_ENABLED-
/NOPRIMARY-
F E D C B A 9 8 7 6 5 4 3 2 1 0 NODE #
. . . . A4 A3 A2 A1 . . . . . . ILV
. . . . 128 128 128 128 . . . . . . 512 Mb
/INTERLEAVE:DEFAULT
/SCOPE /SPEED: 9600 /NOBREAK
English
XMI:D BI:5 08-00-2B-0B-23-AE
DEFAULT /XMI:E /BI:6 CSA1
TAPE /XMI:E /BI:6 CSA1
ETH0 /XMI:D /BI:6 ET0
>>>
--
Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org
Medical Information Scientist Regenstrief Institute for Health Care
Adjunct Assistant Professor Indiana University School of Medicine
tel:1(317)630-7960 http://aurora.regenstrief.org
There are many things one can do with a non-functioning Next Cube. The
following URL was generated by someone who, a) apparently has found the
most obsessive ultimate activity, and, b) has way, way, way too much time
on his mind. IMHO, anyway...
http://simson.net/photos/hacks/cubefire.html
Ya jus' cain't make this-here shit up, I'm a-tellin ya!
Cheers
John
Finally read the description on the large cards.
With 3 50 pin connectors I think it is a Bridge of some sort. The 82586 is
intel's intelligent Ethernet controller so I am sure the 15 pin is an AIU
Ethernet connector.
Paxton
Astoria, OR
A little while ago I seem to remember someone in the UK saying they
needed a power adapter for one of the original HP calculators -
HP35/45/55 etc.
I have one if that person would contact me off list....
-- hbp
>From: "Pat Finnegan" <pat(a)purdueriots.com>
>
>On Thu, 30 May 2002, Glen Goodwin wrote:
>
>> > From: Pat Finnegan <pat(a)purdueriots.com>
>>
>> > What I'm looking to do is provide a (small) SLIP or PPP based TCP/IP
>> stack
>> > for a machine that will stay resident and can be used by CP/M 2.2 [or
>> > perhaps MP/M II] user programs.
>>
>> Pat --
>>
>> I would be extremely interested to learn of your progress in this area.
>> Please keep us posted, or contact me off-list.
>
>I'm starting to have some second thoughts about how I'm going to do this.
>I'm considering an external 'black box' that will connect to a PPP server
>on one end and have a RS-232 connection on the other that will provide
>something like a serialized verion of BSD's sockets. I'm also thinking
>about implementing a raw tcp port that would connect to an extra RS-232
>port [optionally password protected] that could be used to attach to the
>system's console, and replicate it on the other end of the network.
>
>Right now I'm looking at either a Z80 with 32k of ram, 16k of flash, a CTC
>and one or two DUARTS, or a uC that'll provide as much of that in hardware
>as possible. PICs are nice, but generally seem to have too little memory
>for TX/RX buffers, and Basic stamps are too slow. (and who wants to
>program in BASIC anyways?)
>
>Any suggestions on a good uC to use?
>
>-- Pat
>
>
Hi
Although, I don't care for BASIC, there is a company that
is about to release a stamp like board with a BASIC that is
benching at 500 to 1500 times faster than the original PIC stamps.
It gets it's speed from having a better memory model. You
don't have to program in BASIC with it. In fact, the BASIC
is written in Forth that underlies the BASIC. From what I'm
told, you can access the Forth. If Forth isn't your cup of
tea, most all Forths have been able to access the raw assembly
level without using yet another tool. The processor is
based on the 8051 instruction set but it one or two clocks
per instruction instead of 12 to one. Of course, it runs
in the tens of megahertz. Mixed assembly and Forth often
makes a good optimization of speed and memeory size.
Later
Dwight
Yeeeeehah!
I devoted maybe four hours today and yesterday to reading more
about VMS, paks, UCX vs. TCPIP, DECNet plus and such stuff, and
I was finally able (after a two year hiatus) to install
the TCPIP product more or less correctly in my Vaxstation 4000/60.
It seems to work and I could finally ftp the complete hobbyst
paks to it (before I had to do each by hand). I get errors on
startup about some proxy database.
I think that I still have some configuration errors (especially
in the DECnet plus side, but then again, I won't be using it
to communicate with anything else DECnet), but the basic stuff
seems to run (telnet and ftp clients and servers).
Question: where can I get ssh for vax openvms 7.2?
Question: can somebody tell me what are the step by step
commands/dcl incantations to create a user with
reasonable privileges? (I don;t want to login remotely
to the system account). And, does the concept of
a user home directory exist in vms? Where does one
normally create user directories?
Regards,
carlos.
--------------------------------------------------------------
Carlos E. Murillo-Sanchez carlos_murillo(a)nospammers.ieee.org
> From: Feldman, Robert <Robert_Feldman(a)jdedwards.com>
> I was looking through the Alltronics listings and noticed a TTL-Composite
> video adaptor (http://www.alltronics.com/computer_miscellaneous.htm ,
> #92C024) that looks like the adaptor I have for my Osborne 1!
Robert --
Please tell me more about this adapter. I like my Oz 1 but hate the
screen. Where does it connect to the Oz?
Glen
0/0
> From: Gary Hildebrand <ghldbrd(a)ccp.com>
> Had a find time killing the day. My thanks to Joe and his sharp eyes;
> what he found really made my day.
You can always count on Joe to sniff out the good stuff. He's got a nose
like a bloodhound. The rest of his face doesn't look so good, either.
(Sorry, Joe, I couldn't resist that opportunity ;>)
Actually, he's even found interesting stuff in junk piles *in my own shop*
that I couldn't identify.
Glen
0/0