>
>Isn't this the commercial version of the Blit?
>
Yup.
>
>Does anybody actually have one?
>
Nope. I last had my hands on one circa 1988. Never seen one on eBay...
>
>"Ken Seefried" <ken(a)seefried.com> wrote:
> My most favorite was the AT&T 5620 with a host running layers.
>
Hi there,
I have a two Epson HX20's (which we use in our reasearch lab - yes still
- to control some
equipment) one of which has sufferred a failure of the power supply on
the main CPU
board (details below) and I need to get hold of a schematic if one
exists. I beleive that Epson produced
a repair guide - does any one know where I might be able to source this
information.
I have had a plough through the archives to this list and there are some
very helpful people out there
and maybe if anyone has some experience with this machine and can give
me pointers - the following
might help ...
The batteries and external adaptor are good (new) charging correctly and
delivering 4.8 V.
However, the power switch has no effect (no LCD, no beeping)
The main power rails seem to be off - there is 4.8 v at one test point
0 at another an 2.8v scattered
around the board. There seems to be no 17 V which I beleive is needed
for the LCD.
The previous owner reported a burning smell so component failure is
suspected, but no obvious signs
on the transistors.
A previous writor in the archive (Tony Duell) suggests that a volatge
should be present on the collector of Q8,
this is absent.
Thanks in advance
Yours
Matthew Clemence
Hi,
I have here a half working Teletype ASR35. I am missing some parts, namely
the plastic hood, manuals and some lightbulbs. Also the ASR35 isn't
working properly, I am missing half of the keyboard sorta speak, you can
type uptil the letter H or so and then if you continue it starts with the A
again.
So any help with that is also welcome.
Thanks!!
Stefan.
Hi Joe:
I subscribed and posted to cctech, but found your response in the cctalk
archive. This list is new to me -- do you think I should I subscribe to
cctalk instead of cctech?
>>>I have three or four 9915s and a keyboard... I don't know what the
difference is between an A and a B model... I did make a schematic of my
keyboard but I haven't seen it in a while...
>>>
As I understand it, the 9915A is compatible with the HP-85 (aka HP-85A),
while the 9915B is an 85B. IIRC, the 85B has built-in mass-storage and i/o
roms, and more ramdisk memory than the 85A.
I'd sure appreciate any keyboard info you may run across -- I could program
a little pic to convert a serial keyboard. If this keyboard is used with
other HP machines, other folks might find an adapter handy too.
>>>You need to use the HP composite monitors. IIRC the PN is 82912 and
82913. These are used on the HP 86 and commonly used on the 9000 220 (aka
9920) and are pretty common.
>>>
>>>There were software developement kits available that let you write
programs in assembler and burn them into EPROMs that plugged into a HP-85
type plug-in cartridges (called a Hybrid ROM or something like that) or
directly into the 9915. The EPROMs that are in it are probably Matrix
and/or I/O ROM IIRC. That seems to be standard in the 9915s that I'm aware of.
>>>
Yes, I have a programmable-rom-module and assembler rom (but have not tried
them yet). A buddy of mine has managed to read 85 roms and burn them into
eproms for the prog-rom-module. The original 85 roms seem to be special,
and cannot be simply duplicated.
I opened up a rom, hoping to find a standard package, but found a chip
covered in a blob of epoxy, attached directly to a small board. I opened
the rom drawer card, and found that all six sockets are wired in parallel
(no individual enable lines to each). Then I looked at the signals
connected to the rom card connector (using the serial manual's connector
pinout as a reference). The roms have +12V, +6V, and -5V power. There is
an 8-bit bi-directional bus, and four non-overlapping 12V clock signals.
There is a "load-memory-address" line, a "power-on" line, "read" and
"read-control" lines, and even a "write" line (I don't know why write is
available on a rom).
This all leads me to believe the roms are pretty specialized. Since there
are no lines to enable a specific rom socket, I think the 85 must poll for
roms using fixed address ranges or something -- this implies that the roms
contain address qualification circuitry of some sort. I'm just
speculating, but it would make the roms very difficult to duplicate, since
this is not a standard address-bus/data-bus (or even a typical multiplexed
addr/data bus).
Thanks for the info Joe,
gil
;-----------------------------------------------------------
; vaux electronics, inc. 480-354-5556
; http://www.vauxelectronics.com (fax: 480-354-5558)
;-----------------------------------------------------------
I opened up my keyboard and traced out the circuits again today. I HOPE this is right, I haven't double checked it. Everything in caps is as it appears on the keyboard. Names that are too long are abbreviated and shown in lower case. A list of the abbreviations and their meanings is also shown below.
pin 21 20 19 18 17 16 15 14
2 nu kl K1 K2 K3 K4 ^ da
3 1 2 3 4 5 6 7 8
4 Q W E R T Y U I
5 A S D F G H J K
6 sb Z X C V B N M
13 nu nu -l da -CHAR REP -> <-
12 nu RESET bs nu = - 0 9
11 nu nu nu sca ) ( P O
10 nu nu nu nu el ' ; L
9 nu nu nu RUN PAUSE ? > <
Abbreviations:
nu = not used
da = down arrow (up and down arrow are used to recall previous commands and for editing)(I just noticed that I have this listed twice so there's probably an error there somewhere).
k1 = Key Label
el = End Line (this is what HP uses for carriage return/Enter)
sb = space bar
bs = Back Space
-l = -Line (erases the entire line)
sca = Scratch (erases all memory, just variables, etc depoending on what argument you give it)
Notes: The K keys are programable function keys. K5 through K8 are K1 through K4 shifted. You can assign programs or functions to these keys and use the Control input lines to trigger the program or function.
The -Char key erases one character at a time.
the REP key toggles between the insert and replace modes.
There are a few more keys that don't fit into a matrix. Here's a list of them and the two pins that they connect to:
Both SHIFT keys are tied together in parallel and connct to pins 18 and 7.
There is a 8 Ohm .2Watt speaker inside. It connects to pins 25 and 7.
CNTL key connects to pins 23 and 7.
CAPS LOCK key connects to pins 24 and 7.
I'll try to photograph the keyboard and post the picture tomorrow so that you can see what the layout and key legends and shifted legends are.
The HP 10269B/C General Purpose Probe Interface is just a physical
interconnect between the pods and various probes. The B version is for the
old style HP 1630 pods. The C version is for the HP 1650 all the way
through current style pods.
I think the 10342B just buffers the HP-IB signals and I think you could use
the config and IA files just without the probe. For the RS-232/449 signals
it uses a dual UART (I forget which one) plus the Z-80. I assume the Z-80
is there just to configure the UART. Some day I'll dump the eprom on the
probe just to see what it actually does.
I have a manual and the config and IA files for the 10342B. If there isn't
a scanned copy of the manual on the web I should send a copy of the manual
to someone who can scan the manual and make it available on the web.
I also have a 10314B 80386 proble which mates with a 10269B/C and it has a
bunch of active electronics. I don't have config or IA files for it. Does
anyone else? Not that I have a real need for it nor do I have any 80386
systems (at least not at the moment.)
The HP 10277 might just be a physical interconnect to your own custom
interfaces, if I correctly remember what that thing is.
-Glen
>From: Joe <rigdonj(a)cfl.rr.com>
>Reply-To: cctalk(a)classiccmp.org
>To: cctalk(a)classiccmp.org
>Subject: Logic Analyzer pods Re: HP LA Inverse Assemblers for classic
>microprocessors
>Date: Mon, 14 Oct 2002 13:26:25
>
> I dug around this morning and found two logic analyzer pods/CPU
>adapters. These are boxs that you plug the pod of the logic analyzer pods
>directly into and they usually have a cable that plugs into the CPU socket
>of the UUT. When using these you don't use the flying wire leads and
>grabbers.
>
> One is the HP 10342B Bus Preprocessor in the HP 10269B General Purpose
>Probe Interface. This is for the HP 1630 and 1631 series LAs. This
>particular preprocessor is used for monitoring RS-449, RS-232 or HP-IB
>busses and acquiring data directly from the bus. You can replace the Bus
>Preprocessor with various CPU adapters. I opened both of these up and the
>10269 doesn't have any parts in it other than cables, PC boards and various
>connectors. However the Bus Preprocessor is full of ICs, including a Z-80
>CPU.
>
> The other logic analyzer pods/CPU adapter is a HP 10277 and is for the
>HP 1610 sereis LAs. It's a single unit and it doesn't have any active parts
>in it. However it has connectors for ribbon cables to connect the the test
>bewing tested and I don't have the cables so it's POSSIBLE that there may
>be some active parts in the cable or something attached to the other end of
>it.
>
> Joe
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Join the world’s largest e-mail service with MSN Hotmail.
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>
>At 08:20 PM 10/13/02 -0400, you wrote:
>>> Typically I think they came with the matching probe
>>> fixtures, but you only have to know what bits to hook for the status word
>>in
>>> order to use them with the standard probes.
>>
>>I found some informatyion on the probes tucked into the back of the 16510A
>>documentation,
>>and this statement may not be correct. It's possible that the probes may
>>decode some
>>states in hardware, and that the IAs may depend on this decoding. But it's
>>not 100%
>>clear in the documentation.
>>
>
> I checked the description in the HP catalog and it implies the same thing but it's not clear about it. I've run across a few pods, I should grab one and open it up and see it there's anything inside. Another thing to add to the "To Do" list!
>
> Joe
I dug around this morning and found two logic analyzer pods/CPU adapters. These are boxs that you plug the pod of the logic analyzer pods directly into and they usually have a cable that plugs into the CPU socket of the UUT. When using these you don't use the flying wire leads and grabbers.
One is the HP 10342B Bus Preprocessor in the HP 10269B General Purpose Probe Interface. This is for the HP 1630 and 1631 series LAs. This particular preprocessor is used for monitoring RS-449, RS-232 or HP-IB busses and acquiring data directly from the bus. You can replace the Bus Preprocessor with various CPU adapters. I opened both of these up and the 10269 doesn't have any parts in it other than cables, PC boards and various connectors. However the Bus Preprocessor is full of ICs, including a Z-80 CPU.
The other logic analyzer pods/CPU adapter is a HP 10277 and is for the HP 1610 sereis LAs. It's a single unit and it doesn't have any active parts in it. However it has connectors for ribbon cables to connect the the test bewing tested and I don't have the cables so it's POSSIBLE that there may be some active parts in the cable or something attached to the other end of it.
Joe
At 06:42 PM 10/13/02 -0500, you wrote:
>I know for a fact Tektronix no longer supports the 2213 60MHz analog
>scopes.
-snip-
> but when I called
>them, GTE would not sell me any parts. They wanted me to send in my
>scopes, charge me an extremely high troubleshooting fee, charge me more
>for whatever they thought needed to be replaced/repaired, and then charge
>me yet again for return shipping.
Argh, my main scope is a Tek 2213... though I still use my hp1980
sometimes.
>I've since located a source for the special P6120 probes, and am now in
>the process of buying them. I have not yet located the Service/Operators
>manual(s).
I have a photocopy of the operator's manual. At some point I was
also looking for the service manual and I found a message in the
archives of some high-frequency hobbyist mailing list (which
I can't find now, but I have a hard copy).
They referred the person who was asking about this to
Deane Kidd, W7TYR, ex-TeK employee, and who runs a business
supplying manuals for older TeK scopes. The contact info:
Deane Kidd, 27270 S.W. Ladd Hill Rd., Sherwood, OR 97140,
(503) 625-7363 .
carlos.
--------------------------------------------------------------
Carlos E. Murillo-Sanchez carlos_murillo(a)nospammers.ieee.org
If you want a TMS3417 bad enough any of the parts brokers (e.g.
http://www.aecsales.com) should be able to get you some. Usually these
places have something like $100 minimum orders.
I don't know where you would get a single piece cheap.
>From: Ethan Dicks <erd_6502(a)yahoo.com>
>Reply-To: cctalk(a)classiccmp.org
>To: cctalk(a)classiccmp.org
>Subject: Re: My First S-100 System
>Date: Mon, 14 Oct 2002 08:55:33 -0700 (PDT)
>
>
>--- Eric Smith <eric(a)brouhaha.com> wrote:
> > Speaking of Cromemco cards, and only using "standard chips", does anyone
> > have a source for the TMS3417, used on the Cromemco Dazzler? Google
>only
> > turns up a single mention of it, on a German page. "Standard chips"
> > aren't necessarily all that easy to find. (But much easier to find than
> > gate arrays and other ASICs.)
>
>Is that some sort of video chip (like a 6845) or a character generator?
>
>-ethan
>
>
>__________________________________________________
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>Faith Hill - Exclusive Performances, Videos & More
>http://faith.yahoo.com
_________________________________________________________________
Chat with friends online, try MSN Messenger: http://messenger.msn.com
Hi all! I just discovered this mailing list a couple nights back.
Now I have a place to share my cool classic comp acquisitions. :)
Anyway, last weekend, when I reported to my squadron for our monthly
drill, I was informed that one of our officers had brought in a whole
bunch of old computer stuff that I might be interested in (he's
moving across country and isn't able to pack it with him.)
I had a great time sifting through the massive amount of classics
that were stacked at the back of the dining hall, and deciding what I
should claim. Since our little apartment here is short on storage
space at the moment, I just selected a Cromemco System Two and a
Cromemco System Three, as well as a box of various S-100 cards,
manuals, and disks (including a complete set of Cromix-Plus and Unix
System V floppies.) Had I realized that the thing that looked like a
jerry can, which I thought was most likely a power supply of some
sort was actually a Cromemco hard drive, I would have taken it along
with the Cromemco System One that was sitting in front of it as well.
Oh well, live and learn. :/
So the next day, after final roll call, I load up the stuff in the
truck of the guy who gave me a ride home, and me and my roommate that
afternoon start looking over everything. We were disappointed that
the System Three was totally stripped of all cards (though it does
have a pair of 8 inch floppy drives). The System Two on the other
hand, was a different story. Not only does it have a pair of
floppies, but it also has a 21MB hard drive, 3 256K RAM cards, and a
couple other cards I can't remember at the moment. Since we are in
need of some cash at the moment, we went ahead and put some of the
excess stuff (spare manuals, extra cards, and the Fortran 77 and
68000 C packages up for auction. We might also sell off one of the
256K cards that's in the System Two as well. But that isn't the
point of this post (not wanting to turn this into a FA posting,
y'know).
We are looking forward to one day having the room to set up the
System Two and actually making her a part of our little home LAN.
I'm predicting that this is going to be a long term project, much
like restoring a classic car. I suppose the most important thing I
need to get for her is some sort of terminal/control console.
Fortunately, dumb terminals show up at the thrift stores around here
every so often, as well as other interesting bits of old computer
parts (I have an IBM 3274 Terminal Controller set up as a TV stand in
my room. For only $10, it is a much cooler piece than the usual bits
of overpriced furniture Goodwill normally gets...)
I'm also wondering if this little honey could be used as a console
for the Cromemco system...
http://www.oz.net/~otter/gallery/Geek-Console.JPG
Sorry. Can't remember what model number it is at the moment. It is
way too heavy for me to move by myself so I can see the label on the
back. :p
As for the System Three; we haven't decided what to do with it yet.
It doesn't have enough stuff with it to make it worth the hassles of
auctioning (plus, without having an operational car at the moment,
shipping would be an enormous logistical challenge.) If someone can
come pick it up (Kitsap County, WA), I would be open to some sort of
reasonable buy or preferably trade offer; especially if I could trade
it for a Commodore PET (been wanting one of those ever since I saw
one back in the old days on an episode of Buck Rogers, and later in
the background
in Kirk's apartment in Star Trek II:
http://www.oz.net/~otter/images/scr-st2-1.JPG
Anyway, enough incoherent babbling from me for now. Time for me to
catch a bit of sleep.
Later!
-- Scarletdown
P.S. If anyone is interested, I can send off an email to someone at
my squadron Monday Morning to find out where that Cromemco System One
was donated to.
I recently accquired an Osbourne 1 computer. I turned it on and it
seemed to work, I was able to boot BASIC off of a floppy and I wrote a
couple little programs, (print hello world, count to ten, and count
forever, stuff like that). The picture on the screen was kinda dark in
spots, and while the computer was counting, it flickered to a very dark
and barely readable, then it went black all together. I tried turning
up the brightness and contrast controls, the only one that makes any
change on the screen is the brightness control. I can see the rasters
when the brightness is up all the way, but the contrast control has no
effect. The computer seems to still work though, I can turn it on, then
hit enter and it will boot from the floppy. Previously, when it was
working, I noticed the screen flicker when the computer accessed the
floppy drive. My guess is that there is something wrong with the power
supply. Does anyone have any ideas? I would really like to get my
Osbourne working again, it's a really cool little computer.
Thanks!
Ian Primus
ian_primus(a)yahoo.com
Dear Topco,
I've created a web page to publicize and discuss the horrible
misinterpretation of the facts of the history of computing
as delivered to thousands of kids on your recent box of
Corn Puffs. You can see it at:
http://www.threedee.com/jcm/cereal/
I'd like to talk to the person who wrote and designed this box.
I'd like to offer to serve as a consultant to help you design
more accurate and more entertaining cereal boxes than this.
Sincerely,
John Foust
(920) 674-5200
www.threedee.com/jcm
>Anyone know if 3.5" DSDD (not HD) floppies are still manufactured ?
mei-micro sold them at least recently. Although you had to buy them in
lots of 500. Don't know if they are new off the line, or just ancient
stock sitting in a warehouse.
-chris
<http://www.mythtech.net>
>From: "Walter Peterson" <walterp(a)cyberstreet.com>
>
>The A11 light dosn't function due tyo a blown 7405 chip in the front panel. I
have had to replace several of these myself on my altair and on my IMSAI. 7406
seems to make a better replacement as it can take higher voltages
>
>
>
Hi
I've notice these as being a common failure item, as well.
I don't think it is the voltage that is killing them. It is
more likely a timing overlap issue with other parts driving
the bus and stressing these parts. One might consider adding
some resistors in series ( small value ) to limit the current
when a tristate drive also drives the bus at the same
time as the '05 is active ( driving low ). I would suspect
that something in the order of 15 ohms would be enough
to protect the '05's and still drive a solid '0' onto the
bus lines.
There is no reason that any voltage issue should cause
problems with these parts.
Later
Dwight
Stefan <stefan(a)softhome.net> writes:
> I have here a half working Teletype ASR35... I am missing half of the
> keyboard sorta speak, you can type uptil the letter H or so and then if
> you continue it starts with the A again.
>
>So any help with that is also welcome.
I can't help from personal experience (my ASR-35 from N.J. hasn't made it
home yet - it went from The Armory to Canada and should be in Ohio by
the end of the month), but I can make the suggestion that it sounds
like a dirty contact in the output rotor or a broken/disconnected
lever under the keyboard. Looks like you are missing 2**3 in your
parallel->serial conversion, but I couldn't guess at what stage.
I do not own nor am I expecting any ASR-35 manuals. Perhaps the
Greenkeys list mentioned elsewhere might be useful to you for securing
a set of docs. I'll have to be hitting them myself when my 35 shows
up. I'm certain it's in need of a PM cleaning and lube, and I have *no*
idea how to do it at the moment. (The TTY itself still has strapping
tape on the carriage and protective film on the cover - except for a
test sheet, it looks virtually new. Still needs a lube job, though).
-ethan
__________________________________________________
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Time to part with my 7978 9track reel-to-reel drive. Appears to have
power supply problem with both motor drive and logic PSU's - fans
function on power up but nothing else. Unfortunately I have not had the
time/space/expertise to get to grips with repairing this so can't offer
much more insight I'm afraid. Free to anyone who can physically remove
it from me in Central London (really needs 2-3 people to carry it).
Oliver
>From: Stefan <stefan(a)softhome.net>
>
>Hi,
>
>I have here a half working Teletype ASR35. I am missing some parts, namely
>the plastic hood, manuals and some lightbulbs. Also the ASR35 isn't
>working properly, I am missing half of the keyboard sorta speak, you can
>type uptil the letter H or so and then if you continue it starts with the A
>again.
>
>So any help with that is also welcome.
>
>Thanks!!
>
>Stefan.
>
>
Hi
I've only fiddle with my ASR33. You need to find out what
is wrong first.
As an example, my ASR33 takes the output of the keyboard
and passes that to the distributor at the back of the machine
to serialize. The parallel output of the keyboard depends
on a bunch of switches that are located at the side of the
keyboard. These switches are exposed to all the gunk that
usually floats around in a teletype. I'm sure you may find
that one of the switches is dirty and just needs cleaning.
Until the signal is serialized, the problem can be anywhere
>from the switch on the keyboard to the brush on the distributor.
This includes the connectors. Some tracing with an ohm meter
( power off ) will most likely find the problem.
Dwight
The A11 light dosn't function due tyo a blown 7405 chip in the front panel. I have had to replace several of these myself on my altair and on my IMSAI. 7406 seems to make a better replacement as it can take higher voltages
FWIW,
The GA-16/220 is a computer that is used in the Excellon CNC-4 ,
CNC-5 , and CNC-6 consoles. These consoles controlled the
Excellon Drilling/Routing Machines.
www.excellon.com for more info.
My most favorite was the AT&T 5620 with a host running layers. Even without
layers, the 800x1024 page-sized screen was nice. Second would be a Tek
4207...fun graphics. Favorite "normal" terminal would be an amber phospor
VT420.
Ken
I dunno, I prefer TIFFs, but they have the disadvantage of being honkin'
huge.. But at least I can go and in be anal-retentive and edit them to look
better than the originals, can't edit pdfs nearly as much...
Will J
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Hi Stefan:
You may be interested in the greenkeys teletype email list -- lots of good
folks with questions, answers, etc. (I am admin of it). Let me know if you
want more info. You could join and ask, or I could forward your message if
you'd rather. There is likely someone on greenkeys who can help you.
I'm not personally familiar with the 35 (though it's just an ascii version
of the baudot 28). The 35 is a heavy-duty machine that you should be able
to return to service (as opposed to the 33, which is a crappy design that
just wears out). I'd love to see some pics of your 35.
There was a guy in NJ last month with two 35 machines on ebay. He could
not get $5 for them, and may still have them.
I have collected a few teletype machines that I am restoring (not selling):
an M15-ksr, an M31-ksr, an M33-asr, an M28-ksr table-top, an M28-ro, an
M28-rotr, an M28-td, an M14-td, and an M14-ktr.
gil smith
At 07:19 PM 10/9/02 +0200, you wrote:
>Hi,
>
>I have here a half working Teletype ASR35. I am missing some parts, namely
>the plastic hood, manuals and some lightbulbs. Also the ASR35 isn't
>working properly, I am missing half of the keyboard sorta speak, you can
>type uptil the letter H or so and then if you continue it starts with the A
>again.
>
>So any help with that is also welcome.
>
>Thanks!!
>
>Stefan.
>
>
>
;-----------------------------------------------------------
; vaux electronics, inc. 480-354-5556
; http://www.vauxelectronics.com (fax: 480-354-5558)
;-----------------------------------------------------------
I would doubt AT&T handles support for a 3400, since it is an MP-RAS
machine, and I *know* NCR retained MP-RAS... I'm fairly certain that I saw
System 3400 docs on NCRs website when I was looking for Tower manuals..
Will J
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