I have some HP 1000 E/F docs including some power supply docs and at one
point I did look at them to see if I could find information about that
battery resister. I never found it.
But someone else on the list told me that something like an 880ohm resister
across the left most and right most terminals of the middle row of the
battery connector input would trigger the power supply to power up all of
the way. That did the trick for the HP 1000 / 2117F that I have.
-Glen
>I've found the .pdf version of the HP 1000/M/E/F Engineering Docs, but
>every copy I've been able to access is missing section 9 (still can't keep
>track of the Roman Numerals they mark the sections with) which covers the
>power supply.
>
>There seems something a tad 'twinky' with mine, tho I seem to recall at
>one point someone had directed me to a jumper/resistor that needed to be
>installed at the 'Battery Input' connector on the rear to wake something
>up, but of course now that I'm working on it I can't find anything...
>
>Help???
>
>-jim
_________________________________________________________________
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I finally am almost within reach of getting my DEC 3000 300 working. A few
years ago I foolishly purchased it without memory, thinking it would be a
simple matter to inexpensively pick up some memory later. How wrong I was.
Now I have purchased a DEC 3000 300X with 160MB memory with the intention of
lending 32MB to the 300. Now I look at the back of the machine and my main
question is what cable do I need to hook up my VT220, or my VT420, or what
model monitor with keyboard and mouse is this thing supposed to work with?
In a typical DEC fashion, in the manual they do not mention model numbers of
monitor to go with it, but there are rough instructions that I may be able
to follow to get dumb terminal console working. I would ideally like to have
real monitor on 300X, VT420 on 300, leaving my VT220 free for my MicroVax
II.
Oh yeah, I have a TK50 in MicroVax II currently. I also have TK70 with
correct controller board that I would like to put in its place. Friend who I
acquired MicroVax II from claimed that I needed different cable to go from
TK70 controller card to TK70 drive than cable for TK50. It looks to me like
both cables have 26 pins in two rows of thirteen. I suppose one of the
cables might not be straight through but have a twist/transposition of pins.
Will my current cable work? Do I need a new one? Once I get it working,
anyone want the TK50 drive and controller card?
Bradley Slavik
Hi,
>From: "Fred Flintstone" <iamvirtual(a)hotmail.com>
>To: cctalk(a)classiccmp.org
>Subject: Re: DEC LA36 Decwriter II
>Date: Thu, 26 Dec 2002 13:43:54 -0900
>Reply-To: cctech(a)classiccmp.org
>
>I guess I should have been more specific :-)
>
>I have what appears to be an OEM LA36. The label on the front says 'Data
>Terminal Mart'. On the back, there is a label from Digital which gives the
>model number as LA36DP. The processor board inside is made by Datasouth
>Computer Corporation (P/N 512000-2). There is an 8 DIPswitch located on the
>board. I do not have any documentation for this particular model and thus,
>I do not know what the settings should be on the switches. I do have user
>docs for an older LA36, but it does not cover my particular model.
>
>I am looking for information on the LA36, specifically the 8 dip switches.
Ok, you seem to have a third party controller in your LA36. Because DEC build a
real heavey-duty construction for the LA36, and let it print only with 30 cps.
many people and some companies thought it could do much better.
The few companies mentioned before put to the market several replacement-
controllers, making a LA36+ (mpnc) with a much better performnce, sometimes 150
or so cps, loadable fonts and/or pixel-graphics ect. The many people bought
those controllers and integrated them into their LA36'es and DEC-Fieldservice
didn't got tired of telling anyone that a terminal upgraded that way would
certainley disintegrate into its atoms "whitin months"... (I've never seen this
happen).
These 3rd-party controllers would completeley replace the original DEC-made
logic board that was attached to the innerside of the back-door, and was about
just as big as that door itself.
(mpnc = my personal naming convention)
So the DEC printset won't help you much with this, you should find a manual of
Datasouth, to get details on the dip-switches. (most likeley they set the
baudrate, and the switch in the keyboard has maybe got some other function.
>
>What I am trying to accomplish is to get the terminal console working on my
>PDP-11/10 (really it is a PDP-11/05) prior to getting my PDP-11/20 running.
>
That should be possible, 11/10+05 have only 20mA cuircuits. The 11/05 computer
is always the active party (=supplying current to the loop) on both Tx and Rx.
The baud-rate is made by a rather unstable pair of one-shot monostables. Use a
osscilloscope to set the time of this to either 26 or 35,5 microseconds.
You need 26 us for the selection of 150 (tap5) - 2400 (tap1) baud, or 35,5 us
for 110 baud on tap5 of the swich.
>
>When I hook everything up, the SCL on the PDP-11/10 has the expected
>voltages. When I connect it up to the LA36, the voltages are driven to near
>0v.
I think, thats normal, afterall when the terminal is idle, there will be no
current flow. Put your multimeter into mA-mode, and put it in series into the
loop. Use preferably a cheap passive arrow-meter, the cheaper it is, the better
the measurement. Alternativeley, you can also put a led somewhere in the loop.
create data-output, and see what happens
>I am not sure I have things hooked up correctly, or if there is a
>problem with the SCL. I used the docs I had for the older LA36 to connect
>my LA36DP. The connections I made were from T+ on the PDP-11 to R+ on the
>LA36 and T- on the PDP-11 to R- on the LA36.
Seems ok to me. (long time ago...)
(Beware however that the naming-conventions for ths 20mA current-loop were not
always consistent. There is no industry standard for this. I dont know how
Datsouth has named its connection-terminals)
If all this is ok, still nothing will happen if the baud-rate is unmatched
between 11/05 (rotary switch and trim-potentiometer on M7260) and probably
dip-switch and/or Keyboard-button or keyboard sequence on the LA36+
>When the LA36 is not
>connected, there is no voltage on the Transmit/Receive which I am presuming
>means the LA36 is in passive mode.
Ack.
>Voltages are present on the Transmit/Receive on the PDP-11 side,
>and I presume the SCL is in active mode.
Ack.
Hope you can solve this.
Frank
On 12/27/2002 02:48:31 PM CET G?nter Mewes wrote:
>
>today I was looking for some Z8000 Fans, to talk about experieces ...
>Are you interested ?
Yes, I am.
regards,
chris
From: John Lawson <jpl15(a)panix.com>
To: Glen Goodwin <acme(a)ao.net>
Subject: Re: VAX 11/780 anyone with some working experience out there?
Date: 12/25/2002 4:47 PM
> another, but no such luck... and I know plenty of folks who spent long
> years working in big machine rooms... 90+ dB all the time... no thanks.
Umm, 90+ dB? Can this be right?? That seems awfully loud. Is that typical for
larger machines?
Just one more thing to take into account before I seriously consider moving any
larger equipment in here . . .
Glen
0/0
From: Sellam Ismail <foo(a)siconic.com>
>So I guess I should open my reader up and find out which version it used
>in order to determine how to wire up my connector to the 6522?
>
Probably best. On the parts page 12-31 the IC's with the multiple #'s
are the ones that change between the versions (see the next page also).
One person interested in 20 ma LA36's, and I think an answer in error from
Don Maslin. Thanks for the information on the 20 ma question Kevin and Larry
I'm not sure if these units are 20ma loop - but from their history I'd
expect them all to be the same. The plug on the connecting cable is a DB25
female, and the wires go to pins 1 through 7. Models are; Datacom 400 (the
one which may work), 2 Datacom 1200's, and 1 Decwriter III. Does the pin
connection help with the 20ma question, or is there a simple test I can make
on the lines? I'm not sure from Kevin Hardy's letter if one could just
change the wiring - it sounds like it, but these may be OK already. I tried
to see if I could tell what the output driver is (as per Larry's comment),
but the board isn't very easy to see. There appears to be an output IC
labelled 7550 - is this a valid TTL number?
Don Woods
Message: 3
>From: Barry Moyer <barry.moyer(a)pason.com>
>To: "'cctalk(a)classiccmp.org'" <cctalk(a)classiccmp.org>
>Subject: DEC LA36
>Date: Tue, 24 Dec 2002 09:08:19 -0700
>Reply-To: cctech(a)classiccmp.org
>
>Don,
>
>I am in Calgary and I have a newer LA36, but I am looking for another older
>LA36 with a 20mA loop connection. You can contact me at 'iamvirtual at
>hotmail dot com' (replace at with @, dot with .)
>
>Thanks
>
>Barry
>
...
>
>Message: 9
>From: "Fred Flintstone" <iamvirtual(a)hotmail.com>
>To: cctalk(a)classiccmp.org
>Subject: Re: DEC LA36 units
>Date: Tue, 24 Dec 2002 10:46:02 -0900
>Reply-To: cctech(a)classiccmp.org
>
>Don,
>
>I am currently looking for an older LA36 which has a 20mA connection (I need
>it to connect to my ancient PDP-11s). Do you know the model numbers for the
>LA36?
>
>Thanks.
>
>--Barry
>
>.
>
>Message: 15
>Date: Tue, 24 Dec 2002 15:59:09 -0800 (PST)
>From: Don Maslin <donm(a)cts.com>
>To: cctalk(a)classiccmp.org
>Subject: Re: DEC LA36 units
>Reply-To: cctech(a)classiccmp.org
>
>No Barry, sorry, but Dec printers are outside my area of knowledge.
>
> - don
Message: 4
Date: Thu, 26 Dec 2002 09:39:19 -0700
From: Kevin Handy <kth(a)srv.net>
To: cctalk(a)classiccmp.org
Subject: Re: DEC LA36
Reply-To: cctech(a)classiccmp.org
Barry Moyer wrote:
>Don,
>
>I am in Calgary and I have a newer LA36, but I am looking for another older
>LA36 with a 20mA loop connection. You can contact me at 'iamvirtual at
>hotmail dot com' (replace at with @, dot with .)
>
>
I believe that the 20ma current loop was available for all the LA36's.
It was just a different cabling option, bit a 'new' or 'old' version thing.
You could buy the 20ma current loop with your LA36, or later as
an option to change an existing one from RS232 to 20ma.
Message: 13
From: "Truthan,Larry" <truthanl(a)oclc.org>
To: "'iamvirtual(a)hotmail.com'" <iamvirtual(a)hotmail.com>
Cc: "'cctalk(a)classiccmp.org'" <cctalk(a)classiccmp.org>
Subject: DEC LA36 Decwriter II
Date: Thu, 26 Dec 2002 16:42:02 -0500
Reply-To: cctech(a)classiccmp.org
I have the engineering prints in the LA 36 Decwriter II
LA36 (MPC5) sheet 5 of 8 shows 20 ma RECIEVE on J3 pin 7(+) and Pin 3(-)
bridged by a 3.3 volt zener D4 746A feeding a 4N26 (E43) opto-isolator
which drives a MXAA05 (Q4) driver transitor which has its collector on J4
pin 2 "S.I." (serial in)
20 ma TRANSMIT is on J3 Pin 5(+) and Pin 2(-). These pins are bridged
by a 1N4004 diode D6. This diode also is parallel to the
emitter/collector of Q2, an A05. which is driven by another 4N26
opto-isolator (E47). S.O. is J4 pin 4. It is driven by a 7404 inverter
(E62)-(Input is 7404 pin 3 connected to the diode cathode of the
opto-isolator, output is 7404 pin 4, which connects directly to J4 pin 4,
"S.O." serial out)
Sincerely
Larry Truthan
Finding old computers at the second-hand stores is getting difficult now but
I did goto one place and look through some software boxes they had. Lots of
DOS based stuff and ... OS/2 ! I got:
warp server
IBM training book and VCR tape for 2.1
warp 4 with mic
faxworks pro
galactic civilizations still wrapped
warp connect
DB2 single user
hyperaccess
OS2 system sounds
IBM attachpak for OS/2
I left behind warp red box but I'm glad I found it all.
--
Antique Computer Virtual Museum
www.nothingtodo.org
I am looking for this pretty rare printer - a SWTPC PR-40. Am offering
a $200 reward for information leading to a purchase.
Rick Crandall
rick(a)jelcoventures.com
This isn't exactly on topic as it isn't computer stuff, but it is older
than 10 years, and I know there are some audio people on this list.
I have the following amplifier manuals or data sheets available:
-Shure Data Sheet for models M68, M68FC, M68FCE
-Realistic MPA-35 owners manual
-Realistic MPA-100 owners manual
-Bogen Installation and Operation Manual for models CHS-35A, CHS-60A,
CHS-100A
-Shure Data Sheet/Manual for models AMS4000, AMS8000
-TOA manual for models A-903, A-906, A-912
-EDCOR data sheet for model MA-35 (two of these)
If anyone wants them, just give me an address to mail them to and a list
of the ones you want.
-chris
<http://www.mythtech.net>
Just passing this on.
gil
>From: "John" <john_a_s(a)hotmail.com>
>To: <gil(a)vauxelectronics.com>
>Subject: Fw: HP stuff FS
>Date: Mon, 23 Dec 2002 23:05:51 -0000
>
>Hi Gil,
>
>Could you pass this on to ClassicCmp cctalk list please? I think the guy
>below has a 1970s HP-1000E for sale, his web page is at:
>
>http://www.w9fz.com/hp9000/index.html
>
>The 82901M on the disks page has gone, below is the edited version.
>
>Wishing you a Happy Christmas!
>John
>
>----- Original Message -----
>From: <w9fz(a)ix.netcom.com>
>To: "John" <john_a_s(a)hotmail.com>
>Sent: Monday, December 23, 2002 3:16 AM
>Subject: Re: HP availability
>
>
>> Hi there:
>>
>> I think the picture you're talking about was an HP1000E . I actually have
>> another one of those in stock ready to go. A guy, who says he is not
>really a
>> collector, but rather a guy who used to use those in his work, wanted that
>> one. Apparently he had some software punch tapes and a reader and he read
>> some code into it. There were two HP1000E's. THe one in the picture is
>the
>> shorter one. THe one I have now available is the taller one.
>>
>> Bruce Richardson
>> W9FZ
>
>
;-----------------------------------------------------------
; vaux electronics, inc. 480-354-5556
; http://www.vauxelectronics.com (fax: 480-354-5558)
;-----------------------------------------------------------
Steve,
Last question first: his eBay seller's ID is "grizzylee" and one of his
auctions is at
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2052204164.
As to your first question, depends on how much you like the Otrona, and how
much of a collector you are. I still have my 8:16. If you try to sell your
Attache, don't expect more than $50-$75 on eBay. I have seen some go for
more, but there does not seem to be a "hot" market for them.
As to the video, I have heard that the video chip (a 5027, IIRC) often went
bad, but I do not know if that would cause the symptom you see (Tony?). It
might just need an adjustment to the Vertical Sync pot.
Bob
-----Original Message-----
From: Steve Smith [mailto:ssmith12@rochester.rr.com]
Sent: Tuesday, December 24, 2002 8:17 PM
To: cctech(a)classiccmp.org
Subject: Otrona Attache
Hi J.C.,
I have a functioning Attache (it has some video probs; like vertical roll)
which I've owned since new. Should I fix it or sell it? If so, how
(either/both). And who is this Donald that has all Otrona's inventory? If
you don't mind my asking....
--Steve Smith
The date of publication for the manuals I am seeking should be circa
1986-1987.
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
* Old computing resources for business and academia at www.VintageTech.com *
I need any documentation for the Chips & Technologies Super386 chipset.
$$$
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
* Old computing resources for business and academia at www.VintageTech.com *
I am seeking out the manuals for the following software by Labtech:
Acquire
Notebook
Realtime Access
Also looking for the manual for Strawberry Tree Computers "Laboratory &
Industrial Data Acquisition & Control".
If you've got them, please e-mail me directly at <sellam(a)vintage.org>.
There is a bounty on each one.
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
* Old computing resources for business and academia at www.VintageTech.com *
I guess I should have been more specific :-)
I have what appears to be an OEM LA36. The label on the front says 'Data
Terminal Mart'. On the back, there is a label from Digital which gives the
model number as LA36DP. The processor board inside is made by Datasouth
Computer Corporation (P/N 512000-2). There is an 8 DIPswitch located on the
board. I do not have any documentation for this particular model and thus,
I do not know what the settings should be on the switches. I do have user
docs for an older LA36, but it does not cover my particular model.
I am looking for information on the LA36, specifically the 8 dip switches.
What I am trying to accomplish is to get the terminal console working on my
PDP-11/10 (really it is a PDP-11/05) prior to getting my PDP-11/20 running.
When I hook everything up, the SCL on the PDP-11/10 has the expected
voltages. When I connect it up to the LA36, the voltages are driven to near
0v. I am not sure I have things hooked up correctly, or if there is a
problem with the SCL. I used the docs I had for the older LA36 to connect
my LA36DP. The connections I made were from T+ on the PDP-11 to R+ on the
LA36 and T- on the PDP-11 to R- on the LA36. When the LA36 is not
connected, there is no voltage on the Transmit/Receive which I am presuming
means the LA36 is in passive mode. Voltages are present on the
Transmit/Receive on the PDP-11 side, and I presume the SCL is in active
mode.
Unfortunately, I am not sure if this is correct (I am from the RS232
generation, the 20mA is slightly confusing).
Any ideas?
>From: "Truthan,Larry" <truthanl(a)oclc.org>
>Reply-To: cctalk(a)classiccmp.org
>To: "'iamvirtual(a)hotmail.com'" <iamvirtual(a)hotmail.com>
>CC: "'cctalk(a)classiccmp.org'" <cctalk(a)classiccmp.org>
>Subject: DEC LA36 Decwriter II
>Date: Thu, 26 Dec 2002 16:42:02 -0500
>
>I have the engineering prints in the LA 36 Decwriter II
>
>LA36 (MPC5) sheet 5 of 8 shows 20 ma RECIEVE on J3 pin 7(+) and Pin 3(-)
>bridged by a 3.3 volt zener D4 746A feeding a 4N26 (E43) opto-isolator
>which drives a MXAA05 (Q4) driver transitor which has its collector on J4
>pin 2 "S.I." (serial in)
>
>20 ma TRANSMIT is on J3 Pin 5(+) and Pin 2(-). These pins are bridged
>by a 1N4004 diode D6. This diode also is parallel to the
>emitter/collector of Q2, an A05. which is driven by another 4N26
>opto-isolator (E47). S.O. is J4 pin 4. It is driven by a 7404
>inverter
>(E62)-(Input is 7404 pin 3 connected to the diode cathode of the
>opto-isolator, output is 7404 pin 4, which connects directly to J4 pin 4,
>"S.O." serial out)
>
>Sincerely
>
>Larry Truthan
>
>
>In reply to:
>
>Message: 29
>Date: Thu, 26 Dec 2002 09:39:19 -0700
>From: Kevin Handy <kth(a)srv.net>
>To: cctalk(a)classiccmp.org
>Subject: Re: DEC LA36
_________________________________________________________________
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Prolinear made a model with an 80386 processor.
-----Original Message-----
From: evan [mailto:evan947@yahoo.com]
Sent: Thursday, December 26, 2002 6:31 AM
To: cctech(a)classiccmp.org
Subject: Other (non-HP) DOS clamshells?
Hi all... besides than the HP-95/100/200, what are
other DOS clamshells of the era? I'm aware of the
Atari Portfolio and the Poqet device, but there are
several more, methinks...
Hi Mr. Johnston,
today I was looking for some Z8000 Fans, to talk about experieces ...
Are you interested ?
Please, be so kind and send a mail.
Guenter Mewes (www.guentermewes.de)
Subject pretty much says it all. Anyone got docs on this critter?
Thanks;
-jim
---
jimw(a)agora.rdrop.com
The Computer Garage - http://www.rdrop.com/~jimw
Hi all... besides than the HP-95/100/200, what are
other DOS clamshells of the era? I'm aware of the
Atari Portfolio and the Poqet device, but there are
several more, methinks...
__________________________________________________
Do you Yahoo!?
Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
http://mailplus.yahoo.com
I was browsing at the Goodwill yesterday and ran across what seemed
to be a new (out of box) Mattel Aquarius. It still had the plastic
protector on the wall wart pins, and there were no scratches on
those mains pins. The unit was clean overall with no noticable
scratches or wear. Has cassette cable. The downside: $24.95. White tag,
so no possibility of a discount.
I've kinda always wanted an Aquarius, but that seems high to me. Am I
wrong?
I left it on the shelf. Did pick up an Apple PowerMac AV card with
a pair of the mini-DIN-to-RCA input/output cables and a System 7.5
CD in the box - $5.
-ethan
__________________________________________________
Do you Yahoo!?
Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
http://mailplus.yahoo.com
So I'm using the holiday pause to hopefully get my project to build an
interface for my Documation M200 card reader back on track.
I'm using an Apple ][ with a serial card and custom 6522 VIA card as a
parallel to serial converter. The 6522 has just enough inputs to read all
data and signal lines from the reader.
The documenation from the reader is online thanks to David Gesswein. It
has been very helpful, but proves to be too cryptic for this novice to be
able to build the connector. I have the ELCO connector almost all wired
up. The last step is to get the wiring between the cable and the 6522
VIA connector bridge that I've built.
The manual says the output is a "type 7404 TTL output" and a diagram in
the same shows some voltages and current draws that make no sense to me
and don't really facilitate an understanding (at least to this untrained
eye) of what to expect on the pins as data is read.
>From: Vintage Computer Festival <vcf(a)siconic.com>
>>From Section 5.4: Signal Characteristics:
>
>"The standard interface is supplied as the output of TTL type 7404.
>Signal sense is specified as a Logical TRUE and is a positive level;
>logical FALSE is a ground level. Circuit characteristics are shown in
>figure 5-2."
>
>This excerpt can be found on Page 46 at:
>
>http://www.pdp8.net/pdp8cgi/query_docs/tifftopdf.pl/pdp8docs/74226-300dpi.p…
>
>(warning: this server is a bit slow)
>
Seems fine from here :-). It's a mighty 486-133 (and meets the 10 year rule)
with a 384k DSL. Most of the documents have a link to a copy mirrired on
highgate which has better connectivity. I assume it was the speed of
downloading the documents you were commenting on.
>Figure 5-2 is approximately this:
>
> o Output Drive
> | TTL type 7416
> /
> \ I Logical True
> R / load Iload = -400 ua @ 2.4V min (with R=5.6K)
> \
> |
> +--------------->
> |
> /
> | I Logical False
>-----| sink Isink = 16 ma @ 0.4V max
> |
> \v
> |
> +---------------<
> |
> GND
>
>So I was told before that the way this works is that a signal will be
>output as "Logical True" voltage when the data is a '1' and a "Logical
>False" when the data is a '0'. But the way the connector is wired is
>confusing.
>
>Each of the 12 data lines (for reading the holes on the card) has 2 pins:
>the "data" pin and then the "data return" pin. See page 45 of the URL
>above.
>
The return is the ground reference.
>I imagine the data pin goes into one of my inputs on the 6522 (which
>handles TTL levels). However, I was told by Jim Willing that I should use
>an optoisolator in between the output of the reader and the 6522 because
>the output voltage is clamped mechanically(?)
>
It appears to be driven by a TTL Logic. Page 10-3 shows the output connector
which data lines go to the control card pg 10-20 and the returns go to the
DC return (power supply ground). From page 5-6 which you got the output
diagram from it says that twisted pair cable was recommended with the
returns terminated close as possible to the data receivers. Running
the grounds with the data lines in the twisted pair like that gave a little
more noise immunity. The control card parts list (PG 12-31) seems to have a
couple versions, normal TTL (7404), open collector outputs (7416) with pullups
or open collector with inverted data (7417).
>But where does the RET
>(return) pin go? To ground?
>
Ground it to the ground of your receiver card.
>Do I really need the optoisolators? Is the
>6522 robust enough to just take the raw signal from the reader output?
>
I wouldn't bother with the optoisolators and I don't think the PDP-8 card
did either. Anybody have a spare M843 CR8E card reader control
or schematics for it? Polling from an Apple ][ should be slow enough that
it won't see the glitches that are likely to happen on transisions of the
index mark signal. I frequently will read strobe signals like that until
I get the same value twice then act on it.
David Gesswein
http://www.pdp8.net/ -- Run an old computer with blinkenlights.
Have any PDP-8 stuff you're willing to part with?
I have the engineering prints in the LA 36 Decwriter II
LA36 (MPC5) sheet 5 of 8 shows 20 ma RECIEVE on J3 pin 7(+) and Pin 3(-)
bridged by a 3.3 volt zener D4 746A feeding a 4N26 (E43) opto-isolator
which drives a MXAA05 (Q4) driver transitor which has its collector on J4
pin 2 "S.I." (serial in)
20 ma TRANSMIT is on J3 Pin 5(+) and Pin 2(-). These pins are bridged
by a 1N4004 diode D6. This diode also is parallel to the
emitter/collector of Q2, an A05. which is driven by another 4N26
opto-isolator (E47). S.O. is J4 pin 4. It is driven by a 7404 inverter
(E62)-(Input is 7404 pin 3 connected to the diode cathode of the
opto-isolator, output is 7404 pin 4, which connects directly to J4 pin 4,
"S.O." serial out)
Sincerely
Larry Truthan
In reply to:
Message: 29
Date: Thu, 26 Dec 2002 09:39:19 -0700
From: Kevin Handy <kth(a)srv.net>
To: cctalk(a)classiccmp.org
Subject: Re: DEC LA36
Glen,
Thanks for the reply.
The files on your ZIP archive do not want to load on my 16500A.
How did you create the archive?
When I look at the files with a HEX editor the seem to be in the
HP LIF format. I used the LIFUTIL.EXE to create a disk that my
analyzer can read but the files all appear to be corrupted.
Thanks,
Charles.
----- Original Message -----
From: "Glen S" <glenslick(a)hotmail.com>
To: <charles(a)socketcom.com>
Sent: Wednesday, December 25, 2002 10:04 PM
Subject: Re: Looking for HP 10342B Bus Preprocessor software
> Try the attached .zip file.
>
> -Glen
>
>
> >From: "Charles Ader" <charles(a)socketcom.com>
> >Reply-To: cctalk(a)classiccmp.org
> >To: <cctech(a)classiccmp.org>
> >Subject: Looking for HP 10342B Bus Preprocessor software
> >Date: Wed, 25 Dec 2002 21:42:30 -0800
> >
> >I am trying to find the software that is needed
> >for an HP 16500A logic analyzer to operate the
> >HP 10342B Bus Preprocessor.
> >
> >The HP16500A I am using has an 16510A analyzer
> >module. I just need the analyzer setup files and
> >inverse assembler.
> >
> >Thanks,
> >Charles Ader.
My local thrift store has (had?) a PCjr with parallel port sidecard on
the 24th. They were asking $12.50 for it. No keyboard, power brick, or
any other parts were visible. My guess is they had no idea what it was,
since they have a policy against selling computers.
It was there on the 24th, so it might still be there now. If anyone wants
it, I can pick it up for them.
-chris
<http://www.mythtech.net>
Don,
I am in Calgary and I have a newer LA36, but I am looking for another older
LA36 with a 20mA loop connection. You can contact me at 'iamvirtual at
hotmail dot com' (replace at with @, dot with .)
Thanks
Barry
Wow, there was a lot of interest in this item! It has now been claimed.
Happy holidays everyone,
John
-----Original Message-----
From: John Elsbree [mailto:john@elsbree.org]
Sent: Monday, December 23, 2002 4:36 PM
To: 'cctalk(a)classiccmp.org'
Subject: Free to a good home: DEC VT330
Free + shipping:
DEC VT330 monochrome graphics terminal. Excellent condition, in working
order.
Includes LK201 keyboard, VSXXX mouse, and 3 "preliminary draft" manuals:
- Installing and Using
- Programmer Reference Manual, Vol I: Text Programming
- Programmer Reference Manual, Vol II: Graphics Programming
This was a "field test" unit from the days when I was a beta site for
DEC.
Please reply off-list.
John
john(a)elsbree.org
I have them. I can send you a .zip file with them.
-Glen
>From: "Charles Ader" <charles(a)socketcom.com>
>Reply-To: cctalk(a)classiccmp.org
>To: <cctech(a)classiccmp.org>
>Subject: Looking for HP 10342B Bus Preprocessor software
>Date: Wed, 25 Dec 2002 21:42:30 -0800
>
>I am trying to find the software that is needed
>for an HP 16500A logic analyzer to operate the
>HP 10342B Bus Preprocessor.
>
>The HP16500A I am using has an 16510A analyzer
>module. I just need the analyzer setup files and
>inverse assembler.
>
>Thanks,
>Charles Ader.
_________________________________________________________________
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On Dec 17, 16:00, Dwight K. Elvey wrote:
> Here is one that is even a little different still.
> It is what is called Manchester encoding, using biphase
> clocking. You don't indicate 1 or 0, you indicate a change
> by a quick clock and no change by a long clock.
> This is the type of encoding used on my Poly88 for
> what they call PolyPhase. This runs at 2400 baud.
The Exidy Sorcerer also uses Manchester encoding. For 1200 baud this
equates to 1 cycle of 1200 Hz for a logic 1, and a half cycle of 600 Hz for
a logic zero. For 300 baud it becomes 8 cycles of 2400 Hz and 4 cycles of
1200 Hz. It sounds like plain FSK, but if you draw the waveform for
"101100" at 1200, you'll see it's actually a Manchester code:
__ _____ __ __ _____
| |__| |__| |__| |_____| |
--1-- --0-- --1-- --1-- --0-- --0--
> There is a standard called Byte format that uses 300 baud
> and the two tones 1200 and 2400.
Byte format is Kansas City format. It was proposed in Byte and formalised
at the KC meeting.
I think the Commodore PET uses modified CUTS. It records each block twice,
which is why it's relatively slow, but also pretty robust.
--
Pete Peter Turnbull
Network Manager
University of York
I am trying to find the software that is needed
for an HP 16500A logic analyzer to operate the
HP 10342B Bus Preprocessor.
The HP16500A I am using has an 16510A analyzer
module. I just need the analyzer setup files and
inverse assembler.
Thanks,
Charles Ader.
Pardon the test.
Merry Christmas. ;-)
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner & Head Hardware Heavy,
Blue Feather Technologies -- http://www.bluefeathertech.com
ARS KC7GR (Formerly WD6EOS) since 12-77 -- kyrrin(a)bluefeathertech.com
"I'll get a life when someone demonstrates that it would be superior
to what I have now..." (Taki Kogoma, aka Gym Z. Quirk)
Merry Christmas, Happy Holidays, Happy New Year, Fruitful Collecting,
whatever good wishes mean the most to you! It's been fun and interesting
to be a part of this group for the last year and a half or so; thanks!
mike
I was donated a very long (full PC-XT length) PCI card with:
-An Intel I960 CPU.
-A Symbios Login 53C720 -Chip
-A LSI LIA9616 21-40677-02 DC74468 NNM9642 WE1557 -Chip
-And Various SMD ram and Rom chips
Boardnumbers I found:
-5022943-01-H01-P02 (SMS2)
-5422944-K Adapter
Is there anybody out there who's got a clue ?
Sipke de Wal
--------------------------------------------------------
http://xgistor.ath.cx
--------------------------------------------------------
I know this is OT, but I think most people on the list would enjoy this
kind of stuff. There is also a link to a Plasmoid experiment and other
interesting stuff!
http://www.amasci.com/weird/microexp.html
Merry Christmas to everyone!!!
>I am trying to find the 20mA connection diagram for a VT50 terminal.
The VT50 is very similar to
>the VT52, but has a terminal strip on the underside of the terminal
where the 20mA connection is
>made. I do not know which terminal is which. If anyone has a
schematic of the VT50, I would very >much like a copy.
A scan of the VT50/VT52 Pocket Service guide lives at
http://www.vt100.net.
There's a whole bunch of other VT5x stuff there too. I don't recall
whether
actual schematics are to be found there or not.
Antonio
Hi J.C.,
I have a functioning Attache (it has some video probs; like vertical roll) which I've owned since new. Should I fix it or sell it? If so, how (either/both). And who is this Donald that has all Otrona's inventory? If you don't mind my asking....
--Steve Smith
I am looking for any version of rthe Xerox PARC Alto for my museum. I am located in Southern Calif. IO might also have something equally valuable to trade (like a Silicon Graphics 2400 Turbo) in a mini.
Don,
I am currently looking for an older LA36 which has a 20mA connection (I need
it to connect to my ancient PDP-11s). Do you know the model numbers for the
LA36?
Thanks.
--Barry
>From: alderney(a)telusplanet.net (Don and Jose Woods)
>Reply-To: cctalk(a)classiccmp.org
>To: cctech(a)classiccmp.org
>Subject: DEC LA36 units
>Date: Mon, 23 Dec 2002 14:46:05 -0700
>
>I have 4 DEC LA36 units in various states of disrepair. One appears to be
>functioning, apart from the printhead itself, the others probably have
>usable components, but I have limited ability to test much beyond the
>various motor drives. If anyone needs parts I would be willing to
>dismantle
>and ship for the cost of the freight - which may be the biggest problem as
>I
>am located in Alberta, Canada. Don Woods
_________________________________________________________________
MSN 8: advanced junk mail protection and 3 months FREE*.
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Got an FCC ID number on that board (assuming it was for sale in the US)?
Glen Goodwin
0/0
From: Sipke de Wal <sipke(a)wxs.nl>
To: Glen Goodwin <acme(a)ao.net>
Subject: Digital SCSI Controller ???
Date: 12/24/2002 12:36 AM
> I was donated a very long (full PC-XT length) PCI card with:
> -An Intel I960 CPU.
> -A Symbios Login 53C720 -Chip
> -A LSI LIA9616 21-40677-02 DC74468 NNM9642 WE1557 -Chip
> -And Various SMD ram and Rom chips
>
>
> Boardnumbers I found:
>
> -5022943-01-H01-P02 (SMS2)
> -5422944-K Adapter
>
> Is there anybody out there who's got a clue ?
>
> Sipke de Wal
> --------------------------------------------------------
> http://xgistor.ath.cx
> --------------------------------------------------------
>
Free + shipping:
DEC VT330 monochrome graphics terminal. Excellent condition, in working
order.
Includes LK201 keyboard, VSXXX mouse, and 3 "preliminary draft" manuals:
- Installing and Using
- Programmer Reference Manual, Vol I: Text Programming
- Programmer Reference Manual, Vol II: Graphics Programming
This was a "field test" unit from the days when I was a beta site for
DEC.
Please reply off-list.
John
john(a)elsbree.org
I think that there is some confusion on this part.
First : Mostek wasn't in the TTL business, perse
Second: I'm pretty sure that the part referenced below was a 7449, a
cousin of the 7448.
Thirdly : 7429 is most probably a date code.
From: Tom Kwasniewski
>I cannot find the 7429 in any TTL data books but I have a couple of
dozen
I believe that it's a BCD to 7 segment (LED) decoder with open collector
outputs. Not sure of the pinout, though.
John,
Do you live in Canada? If so, I would be interested in the terminal.
Thanks.
--barry
>From: "John Elsbree" <john(a)elsbree.org>
>Reply-To: cctalk(a)classiccmp.org
>To: <cctalk(a)classiccmp.org>
>Subject: Free to a good home: DEC VT330
>Date: Mon, 23 Dec 2002 16:36:23 -0800
>
>Free + shipping:
>
>DEC VT330 monochrome graphics terminal. Excellent condition, in working
>order.
>
>Includes LK201 keyboard, VSXXX mouse, and 3 "preliminary draft" manuals:
>- Installing and Using
>- Programmer Reference Manual, Vol I: Text Programming
>- Programmer Reference Manual, Vol II: Graphics Programming
>
>This was a "field test" unit from the days when I was a beta site for
>DEC.
>
>Please reply off-list.
>
>John
>john(a)elsbree.org
_________________________________________________________________
MSN 8 limited-time offer: Join now and get 3 months FREE*.
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Hi,
Well, it looks like the deadbeat seller who was supposed to be selling
me the HN462532 EPROMs has vanished. He's screwed over another 18 people
besides me and has earned a reputation for ignoring emails. So, I now need
to find another source for some HN462532 or TMS2532 (preferred) or 2732
(I'll need to do some bodging to use these, but still usable) EPROMs. I need
at least two of the same type of device, preferably four (so I've got some
spares). I've got a 10 Euro note/bill/whatever sitting on my desk that I'm
willing to use as payment, or I'll pay in Pounds Sterling. Or Paypal. Your
choice.
It looks like my stupid mistake with the Ace put a -12V spike on one of
the data lines and fried everything on the main MCU bus. That is, address
decoder, secondary decoding, main RAM, CPU and ROMs.
And just when I thought this year couldn't get any worse, my Sansui 210
tuner-amp decided to blow its right aux channel this morning. Although this
is a bit OT, I was wondering if anyone here had a service manual for this
model they could copy for me? Heck, at this point even a schematic would be
useful...
Thanks.
--
Phil.
philpem(a)dsl.pipex.com
http://www.philpem.dsl.pipex.com/
I have 4 DEC LA36 units in various states of disrepair. One appears to be
functioning, apart from the printhead itself, the others probably have
usable components, but I have limited ability to test much beyond the
various motor drives. If anyone needs parts I would be willing to dismantle
and ship for the cost of the freight - which may be the biggest problem as I
am located in Alberta, Canada. Don Woods
It was interesting to look through the archives. Sad, too. Too many
of those computers are familiar!!
Hey, I probably started way back with a Olivetti Underwood Programma
101 (http://www.silab.it/frox/p101). That was one of my first real
experiences with a programmable computer (some would say calculator),
way back in the early 70's.
Somewhere after that I did some programming on a TRS-80, storing my
programs on audio tape.
And I wish I could use my HP-25 calculator (1976). I need to find
replacement rechargeable batteries. It was amazing what one could
program into that thing with only 49 steps locations! Fun stuff and
RPN was interesting.
Blah, blah, blah. PDP-11, DEC-System 10, Apple II in college... so on.
Anyway, cleaning up through my things I've pretty much decided to break
the ties and offer up a few pieces of equipment, if you know of any
interested parties:
------------------------------------------------------------
SUN 3/160 CPU board (pn 501-1208)
Its a 68020 @ 16.67MHz, 68881, Sun-3 MMU, 4MB, 2 MIPS, 9U VME
format, B/W video, Ethernet, serial, parallel ports. This board weighs
nearly 4 pounds!
The site http://www.sunstuff.org/hardware/systems/sun3/sun3/3-160/
claims this is the first 68020-based Sun machine.
------------------------------------------------------------
>From the same 3/160 machine (which years ago I hauled off the 200 some
pounds of chassis-- don't hate me!)...
Clearpoint SNXRAM Memory Board (dated 1986)
Populated with 8MB with sockets for another 4MB, if you have
the necessary 144 MCM6256 (256K x 1bit) memory chips (with an extra
parity bit for every eight, the numbers work out).
------------------------------------------------------------
Maxtor XT 43805 380MB SCSI Disk
Full Height - Approx 6x8x3 5.5 pounds
------------------------------------------------------------
Micropolis 1325 ST506 85MB SCSI Disk
Full Height - Approx 6x8x3 6 pounds
Dated 1986
------------------------------------------------------------
KIM-1 Microcomputer system (late 70s?)
It's a 6502-based micro. According to
http://www.6502.org/oldmicro/buildkim/kim.htm, "The KIM-1 is the first
computer developed by Commodore, or better, MOS [Technologies]. MOS was
an IC producing factory which Commodore took over to be sure of a
constant supply of ICs.... The KIM-1 has 1152 bytes of RAM, 2048 bytes
of ROM and 30 I/O-lines. Some of these lines are used to drive six
7-segment LED-displays and others are used to read the little
hexadecimal keyboard." You would use audio tape for storage and use a
teletype, etc. for My father built this unit up with more memory, nice
power supply, etc.
------------------------------------------------------------
That's about it (I really don't consider old 386 PCs as interesting),
though I do have a Casio FX-7000 graphing scientific calculator (1985).
But I saw on ebay going for $6. Its not about the money, it just
shows there isn't much interest in it.
Thanks for your time. If you know of anyone interested in these
things, let me know (I may keep the KIM-1).
Scott Austin
__________________________________________________
Do you Yahoo!?
Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
http://mailplus.yahoo.com
Greetings,
I am trying to find the 20mA connection diagram for a VT50 terminal. The
VT50 is very similar to the VT52, but has a terminal strip on the underside
of the terminal where the 20mA connection is made. I do not know which
terminal is which. If anyone has a schematic of the VT50, I would very much
like a copy.
Thanks.
On Dec 23, 0:04, Philip Pemberton wrote:
> You lucky devil! A Dataman S3 (aka "Softy 3")? I saw an S4 for ?165 at a
> hamfest. Had there been a bank machine within 10 miles I would have
bought
> it.
It would have been a good buy. With the right adaptor , it can also do
several types of PALs, GALS, and other devices. Sadly, my S3 is rather
more limited. OTOH, it cost less than ?165.
> But there is some consolation. I'm getting an Elnec PrEPROM-02aLV EPROM
> programmer for Christmas, so all is not lost.
That will certainly do the job.
> > I can check the Hitachi data
> > sheets to make sure it uses the correct parameters for OTP devices,
> > in case they're different from "normal" EPROMs.
> That would be great - have you got a copy of the TI TMS2532 datasheet,
too?
The OTP package is identical to the ceramic/quartz package, so no problem
there. The HN462532 is pin-compatible to the TMS2532 as well, so that's no
problem either. Both use a single 50ms programing pulse with Vpp=25V.
--
Pete Peter Turnbull
Network Manager
University of York
>dave you have a 28s - i loved mine till it died - sent it to hp to fix
>and they sent me a 48 to replace it - it had the best keyboard instead
>of having to shift alpha modes all the time - billp
>On Monday, December 23, 2002, at 04:48 , Dave McGuire wrote:
I loved my 42s until someone stole it... and the cost on ebay
to replace it is prohibitive...
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | email: mbg at world.std.com |
| | |
| "this space | (s/ at /@/) |
| unavoidably left blank" | URL: http://world.std.com/~mbg/ |
| | "pdp-11 programmer - some assembler |
| (DEC '77-'98) | required." - mbg KB1FCA |
+--------------------------------+-------------------------------------+
In this day of special holidays, we must remember today's most important
celebration ... the transistor, in 1947 (IIRC?).
Merry Transistor Day,
--
----------------------------- personal page: http://www.armory.com/~spectre/ --
Cameron Kaiser, Point Loma Nazarene University * ckaiser(a)stockholm.ptloma.edu
-- All wiyht. Rho sritched mg kegcaps awound? ---------------------------------
I'm trying to locate a copy of the instructions for connecting a Model
2000 keyboard to a Model 6000 computer. They were included in the swap
region of one of the boot disks for Xenix 3.2.something. Does anyone have a
copy of this file anywhere?
I think it is called m6010.tar (or something similar).
Any other Tandy Xenix resouces out there?
Thanks,
Kelly
kb2syd
I'm trying to locate a copy of the instructions for connecting a Model 2000
keyboard to a Model 6000 computer. They were included in the swap region of
one of the boot disks for Xenix 3.2.something. Does anyone have a copy of
this file anywhere?
I think it is called m6010.tar (or something similar).
Any other Tandy Xenix resouces out there?
Thanks,
Kelly
kb2syd
Glen S, if you have trouble reworking your fans let me know, I have some
available. We're in Melbourne, Florida. See our partial list of available
items at www.tarinc.com
thom
Hi,
There is a VAXstation II/GPX in a BA23 floorstand available
in the area of Regensburg/Germany.
AFAIR the QBus contains CPU, GPX-Framebuffer, RAM (don't know how much),
ethernet and MFM-controller.
It should be in working condition and is free for pickup (no shipping!).
For further information please contact t.bartzick_NOSPAM_(a)gmx.net
(remove the "_NOSPAM_").
bye
Thilo
While pawing thru the piles of scrap boards at the local junk emporium,
I came across two identical boards marked "PVK11-G/02". They have the
standard double high/double wide QBUS form factor and dark brown/black
module handles. The only other identification I could find printed on
the boards was "Made in Australia" - no manufacturer or module number.
Each board contains a 6809 (!) chip, an Intel FDC chip, a CRTC chip,
a row of DRAMs, a couple of EPROMS, and some other miscellaneous logic.
Now, of course, the question is "What do I have"??? A quick web search
for PVK11 turned up nothing.
Thanks!
Bob Armstrong
P.S. If you can, please cc me directly with your reply - I read this list
in digest form and I can't wait a whole day to find out!!!
> The Hummer itself is representative of everything
> that is wrong in America today.
> "The 6000 SUX, because bigger is better!"
And what do we look like to outsiders when we run
440V Mainframes to do a P200's job? Hopefully
the idea of running such things _full time_ is only
a joke.
John A.
1.4 Kilowatts, <50 hours a year.
I ripped the phonemodem cable out of the wall
but couldn't stop that last send in time. sorry.
Hi.
I've been a little slow in beginning this project, and I apologize to
y'all who have been waiting patiently.
My year-end slam has finally quit, and I have time to play with toys.
I do have Jay West's HP/UX v10.20 media in hand, and will be imaging and
testing copies this week. I have 8xx and 7xx machines available for
verification; anything else is your guess.
I should be able to ship the first week of January.
Jay sent me a list of requests for back-up or replacement media, and
I'll be contacting each of you today or tomorrow off-list. If you had
asked, and don't hear from me by Tuesday, please contact me off-list.
Or, if you need a replacement set of 10.20 media and didn't ask before,
let me know.
This is NOT a warez offer, either on Jay's part or mine. If you ask
for a backup set, I will assume that you have satisfied any licensing
requirements.
I'll be asking for the cost of media & shipping as well - about $2.50
US per CD and about $6 per DDS tape, depending on the current price of
media. There are 8 CDs and 3 4mm DDS tapes. That's based on USPS Media
Mail rates. International or priority may be a little extra.
Please take all further correspondence off-list, so as to keep the
S/N ratio up.
Happy Holidays to everybody!
Doc
For the life of me, I cannot find a good TRSDOS system disk for my TRS-80
M3. Can someone make a copy and send it to me?
If so, please respond to me directly at <sellam(a)vintage.org>.
Thanks!!
Happy Holidays!
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
* Old computing resources for business and academia at www.VintageTech.com *
On Dec 22, 22:36, Tony Duell wrote:
> I would have to hunt for them, but I might have a couple of new Hitachi
> 462532s in the OTP (plastic) package. I bought them to repair a digital
> LCR meter, and then found that the one thing that had not been 'got at'
> was the EPROMs (fortunately) so I never used them.
>
> I have no idea if they're good, and I don't think I can easily program
> them (that was to be another project if I had to re-burn the firmware for
> the meter), but if I can find them, are they any use to you?
If Tony can provide OTPROMs, or you can get EPROMs from BG Micro, my S3
should be able to program them. I can check the Hitachi data sheets to
make sure it uses the correct parameters for OTP devices, in case they're
different from "normal" EPROMs.
--
Pete Peter Turnbull
Network Manager
University of York
Hiho, folks, I have been gone from the list for several months now.
Seems like eternity. All my nice machines are very depressed because
they get no attention. The VAX 11/780 is shivering in the garage, cold
wants to run to warm itself up, but I have not enough time to let it.
I am missing some critical pieces of information, to get it booted and
install BSD on the RA90 disk that I have installed via UDA50.
How do I make myself a boot configuration file that starts the system
>from a newly installed UDA50? Of the boot configs that I have on the
RX01 disk none seems to fit. And I don't know how to show the contents
of these files on the terminal such that I could learn what those boot
commands files do an how to enter them manually. I have no idea where to
put the Unibus address and start address and all that stuff. I'm not
even sure I have set the UBA50's address switches correctly.
I also have installed a second RX01 drive and I was wondering how
I can tell the console to show me a @DIR of that other drive? Is there
a way to switch between the default drive or to give a unit number
to the typical commands (such as @DIR)? My primary goal is to make
copies of some of the more critical RX01 disks that I have, since
some of the disks already have errors on them I don't want to loose
my last console boot disk.
I have asked some of these questions before but got no response, seems
like noone has an 11/780 running. I would really love to get into
touch with some person here who has a VAX11/780 or knows it
so well to can give directions from memory. Aren't there 11/780
people here on the list?
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
(I suppose "geeking" could be considered a word. ;))
Hi folks.
For some time now, Philips has had a mailing list intended for
discussion of their 8051-architecture products. It was very poorly
run, and there were many complaints about slowness, duplicate postings,
etc, but it was a popular list nonetheless. A few days ago, they
announced that they'd be moving the list to a web-based forum, and
everyone screamed. Fortuitously, many weeks prior, I had set up a
mailing list called "microcontrollers" on my mail server, but hadn't
told anyone about it.
Well, you can see where this is going...As expected, Philips' web
forum was dead on arrival, and there are about fifty people (and
counting) on my microcontrollers list. Mine isn't intended to be
8051-specific, but many of the first subscribers were refugees from the
Philips list cutover, so much of the traffic has been 8051-related so
far. I hope for it to be a general (but highly technical) forum for
discussion of topics related to embedded systems development.
Anyway, since I know several of you (especially John Wren, whose name
I see all over the net in 8051 code repositories!) are into embedded
stuff, I thought I'd drop a note to the classiccmp community and let
you know of the list, and invite you to subscribe. It's
microcontrollers(a)neurotica.com, and you can subscribe by pointing a
browser at
http://mail.neurotica.com:8080/mailman/listinfo/microcontrollers.
-Dave
--
Dave McGuire "She's a cheek pincher. I have scars."
St. Petersburg, FL -Gary Nichols
I *finally* managed to get probes for my Tektronix 2213 scopes late this
last week. I still can't quite decide which project to tackle first ;P
Unfortunately, most of the P6120 probes are missing the slip-on clip and
ground leads, so I appear to have some more searching ahead of me. Only
one probe has a ground lead, which has obviously been damaged and repaired
by a previous owner. I suspect and hope that the ground leads and clips
will be easier to find than the rest of the probe. Does anyone know
offhand of a source for these parts? I don't expect Tektronix to have the
parts still available, since they told me that they sold off all parts and
spares for the 2213 series to GTE. The last time I talked to someone at
GTE about 2213 parts, they were less than helpful, and suggested I either
send them the scope for repairs (it just needs the plastic front panel) or
go buy a new scope.
-Toth
Many months ago, due to my frustration trying to find real floppies
to run on my TRS-80's, I began to build a virtual floppy drive for it.
The idea is that I can download software from the Internet (like
Ira's great site) and run it on my TRS-80 without having to make
a floppy.
This little box (the SVD) has an RS232 port on one side, and a TRS-80
floppy edge-card connector on the other. You download a DMK image to
the SVD and the TRS-80 will boot off of it. You can use the standard
TRS-80 DOS tools then to make a copy of the disk...or whatever.
The box is in pretty good shape now, but still not fully functional.
You can boot most OS's and even many copy-protected disks. You can't,
though, write to the SVD from the TRS-80.
I'm looking to make this box available for all TRS-80 nuts. I
don't want to make any money off of it, but would like to use any
profits (beyond cost of parts) to fund sites like Ira's or other
vintage computer concerns. And the more people who will buy it,
the cheaper the cost of parts. I'm guessing that I can get the
cost of the box down to $50 for parts, so I'm thinking that a $75
price tag would work.
Soooo, I'm looking for one or two beta testers to help me make sure
that I've covered all of my bases, as well as to help move the SVD
forward. I need help in testing, but also writing useful software
for Linux and Windows to manage the download to the SVD. Also, I'm
going to need help figuring out the copy-protection of some disks.
Any volunteers out there? For more information, check out the
beginnings of the SVD web-site: http://www.rothfus.com/SVD .
Or just e-mail me eric(a)rothfus.com.
Thanks!
Eric Rothfus
Does anyone have a working boot disk for a Sharp MZ-80B?
I went to use mine for the first time in a few months, and all of the disks
are either reporting "Not a Master" or "Read Error". Since I *know* that at
least 3 /should/ be bootable[1], there is clearly something awry with
either the disks or drives. I'm going to try my spare set of drives
tomorrow, but if that doesn't work then I'm stuck :(
TIA
[1] One of them I made myself, used it, and even labelled it "80B Boot
Disk". And that reports "Not a master" now. Grrrr. :(
--
Cheers, Ade.
Be where it's at, B-Racing!
http://b-racing.com
I became the grateful recipient of a TI Programmer today. A buddy at
work said "here, you like calculators, right? Better than throwing it
away." Well, I said "thanks!"
Now, in looking about the internet for some info on the battery styles
for these things, I have a couple of questions that I cound't find the
answer to.
This calculator has a battery pack called BP-8 which has 2 AA ni-cads
and a small circuit in it. It connects to the calculator internally
with a connector that would also mechanically mate to a 9 volt battery.
Now I would not expect a 9 volt battery to work where 2 AA's work, but
I'm not sure. In looking at Gene's web site he says the BP-8 is also
used on the TI-30 and I see TI-30's on ebay saying that they work with 9
volt batteries.
I will replace the two AA's with new ones. That should make the BP-8
good again.
I guess the is a roundabout way of asking for some background on the
power requirements of this calculator. Unfortunately my buddy had lost
the AC adapter (apparently it was an AC-9132, thanks Gene!). So I'll be
looking for one of those. 5.7v, 240ma, and that small 2-pin connector.
Thanks for any help.
--
Dave Mabry dmabry(a)mich.com
Dossin Museum Underwater Research Team
NACD #2093
Hi --
After all the whining I've done on this list concerning virii attacking the
Windows-based PC I've been using for email, I'm pleased to announce that it's
no longer a problem.
This message was composed and mailed using the email system I've been working
on -- ZMAIL. The client-side hardware consists of a Zenith Z-100 with 1 20 MB
hard drive and 192 KB RAM, plus a 56 K modem. I really don't know what the host
machine is, except that it's running Debian Linux.
The client-side software consists of an offline email reader/writer -- ZMAILER -
-- which has many of the features you'd expect: address book, reply, forward,
import file, etc. (no sort capability yet) Additionally, there are utility
programs which concatenate the outgoing messages into a single file, break the
incoming messages out from a single file, connect to the host, and transfer the
data back and forth.
On the host side, I wrote programs to grab new incoming mail and pass it to the
client, as well as a utility to break out individual outgoing messages from a
single file and post them via SMTP.
This has been a great learning experience as I had to learn enough about
CP/M-86, Linux, SMTP, and the 2661 UART to get this system working. It also
(IMHO) is a great use of this classic old Z-100 -- actually two of them, one at
home and one at my shop.
Anyway, thanks to all of you who very kindly helped me during the course of this
project. Especially, thanks to Joe Rigdon, who gave me the Z-100s, and also to
Tony Duell, who very patiently helped me with the basics of programming the
2661.
Classic computers rule! (even at 2400 baud ;>)
Later --
Glen
0/0
I just acquired a new, unused DEC VT100 terminal. I have not plugged it
in yet, because I am a little weary about firing up a piece of 20 year
old hardware that has never been turned on before. Something tells me
that there are probably some dried up capacitors lurking in there
somewhere, just waiting to blow as soon as I flip the switch. Visual
inspection really can't tell me anything here, there won't be any burn
marks or blown caps in something that has spent it's entire life
wrapped in plastic. What areas in particular should I check? Are there
any parts that are prone to failure in these terminals? Thanks in
advance!
Ian Primus
ian_primus(a)yahoo.com
PS - On a similar note, does anyone know of someplace online that I can
find a VT100 keyboard? I have one here, but it's in really terrible
shape - very yellow with the name of a school written on it. It works,
save for the "Return" key that normally takes two presses to register,
but I would like to find something in a bit better shape and with all
the keys present and accounted for.
On Dec 20, 17:35, Philip Pemberton wrote:
> Frank McConnell wrote:
> > There was also a Vista 8" floppy controller for the Apple ][, built
> > around the WDC 1793 I think. I have one of those in a Basis 108.
> 1793? That was in the same family as the WD1770 and 1772, wasn't it?
Same manufacturer but different family, and not interchangeable.
> Speaking of which, has anyone got a WD1772 spare? I'd like to put a
> high-density (1.6MB) disc drive in my Acorn A3000, but the instructions
I've
> got to upgrade it say that I've got to use a WD1772 with an 02-02 batch
> code.
Yes, they can run at a higher clock speed. About the only place you find
them are in Atari 520s and 1024s.
--
Pete Peter Turnbull
Network Manager
University of York
Hi
I've just seen the third surge protector blow
up and this time, it almost started a real fire.
I've had two of these go up in smoke that were
in metal strips. These generally make a lot of
smoke but I think the metal spreads the heat enough
that the fire danger is small. Now, most of the
newer ones are made from plastic. The last one
that just burned, started a small fire on the back
side of a chest of drawers. Luckily, the chest
didn't stay lit. It did charcoalize one of the feet.
While these things come with a 15 amp breaker,
the MOV's fail and draw something less then what
is required to blow the breaker.
I wonder if any of the fire prevention groups are
looking into these time bombs?
Dwight
>To: cctalk(a)classiccmp.org
>
>> I've just seen the third surge protector blow
>>up and this time, it almost started a real fire.
>
>
>> I wonder if any of the fire prevention groups are
>>looking into these time bombs?
>
>
>Are you buying units that are UL approved?
Are you kidding, I don't think I've ever seen
one without a UL sticker.
>
>When I blow up power strips so far all I get are sparks and a very small
>puff of smoke.
This is what the metal ones do ( at least the two I've seen go ).
It was a plastic one that caused the troubles. When I've looked
in the metal ones, I've never seen a separate fuse. I don't
know what the plastic one had, it is a melted mess.
Dwight
>
>
>
Well I managed to get a M7095 module ($25 plus shipping) for the PDP11/44 I
recently acquired and now I can connect to the console >>> prompt after
powering it on. Plus I figured out how to execute the firmware utility on
the CMD CDU-720 (anyone have docs for this board?) so it appears that the
system is fairly functional.
However, after a while I noticed that some of the modules seemed to be
running rather hot and then I noticed that one of the three fans is not
working. I pulled out the fan tray and found that I can manually spin up
the two good fans with little effort but the bad fan sticks and won't spin.
These fans are labeled Torin TA450 Model A3102-10 35VAC 75Hz. Anyone know
where a replacement fan could be obtained?
_________________________________________________________________
Protect your PC - get McAfee.com VirusScan Online
http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963
Fred Cisin (XenoSoft) wrote:
> > > seeing one that had some extra diagnostics and stuff. And, of course,
> > > there was the Sorrento Valley Associates board that did MFM in Apple][
>
> On Thu, 19 Dec 2002, Sellam Ismail wrote:
> > Ooh, juicy! Where can I get one of those?
>
> It's been a while since I've seen one. They were mostly pushed in the 80s
> for being able to connect 8" drives!
There was also a Vista 8" floppy controller for the Apple ][, built
around the WDC 1793 I think. I have one of those in a Basis 108.
-Frank McConnell
I pulled out my IC Master last night and indeed they are 4kx1 chips. So, the
board is a 32k board.
-----Original Message-----
From: Eric Smith [mailto:eric@brouhaha.com]
Sent: Thursday, December 19, 2002 10:20 PM
To: cctalk(a)classiccmp.org
Subject: Re: CompuPro RAM board settings
Rich Cini wrote:
> I just got a CompuPro RAM20 memory board with no manual.
[...]
> The memory array is 8 columns of 8 chips, type MM2147J. I'm thinking
> that these are 2kx1 chips, resulting in a 16k board.
They're 4K chips.
Someone somewhere may have sold 2K chips (probably as half-good 4K chips),
but they sure weren't very common.
Richard Cini wrote:
> I just got a CompuPro RAM20 memory board with no manual. I'm looking
> for the DIP switch settings specifically, but a copy of the manual would be
> very helpful.
And here I was kicking myself for forgetting to take the CompuPro
Product User Manuals volumes back out to storage where they would be
buried in boxes all the way at the back. My forgetfulness is your
good luck tonight.
> It's missing two chips...a 74LS74 at U6 and a 25LS2521 at U10. The
> memory array is 8 columns of 8 chips, type MM2147J. I'm thinking that these
> are 2kx1 chips, resulting in a 16k board.
No, it's a 32KB board. 8 rows of 4KB each. Your "missing" ICs are
explained below too.
Switch 1 enables 4K blocks, one position per row.
SW1-1: row 0 ON enables row;
SW1-2: row 1 OFF disables row
...
SW1-8: row 7
Switch 2:
Positions 1-4 set the base address of the board on a 4KB boundary.
SW2-1 is the least significant bit, SW2-4 is the most significant,
write your desired start address in binary and then a 1 means
turn the switch on and 0 means turn it off. So OFF OFF OFF OFF
means the board starts at 0x0000, ON OFF OFF OFF at 0x1000, ....
Position 5: ON: RAM XX is a standard/global memory
OFF: RAM XX is to be used as extended address or bank
select memory
Position 6: ON: enables response (deselect) to PHANTOM
OFF: disables response to PHANTOM
Positions 7 and 8 matter if the board is being used as a bank
select memory. If you want the board to come up enabled when
you turn on the computer, SW2-7 should be on and SW2-8 should be off.
If you want the board to come up disabled, SW2-7 should be off and
SW2-8 should be on. Never leave them both on or both off.
Switch 3:
If you are using the board as extended address memory,
put the 25LS251 in position U11 and leave positions U6 and U10
blank. (This is why you're missing a couple ICs!) Then,
Switch 3 sets bits A16 through A23 of the extended address.
SW3-1: address bit A16 ON = 1,
SW3-2: address bit A17 OFF = 0
...
SW3-8: address bit A23
If you are using the board as a bank select memory, put the
25LS251 in position U10 (leaving U11 blank) and put a 74LS74
into position U6. Then, Switch 3 sets the bank select port
address.
SW3-1: port address bit A0 ON = 1,
SW3-2: port address bit A1 OFF = 0
...
SW3-8: port address bit A7
Switch 4:
If you are using the board as a bank select board, Switch 4
sets the data bit(s) that will enable the board when written
to the bank select port.
SW4-1: data bit D0 ON = 1,
SW4-2: data bit D1 OFF = 0
...
SW4-8: data bit D7
Note that if more than one switch is set, then the board will
be enabled if *any* bit matches.
-Frank McConnell
Hello, all:
I just got a CompuPro RAM20 memory board with no manual. I'm looking
for the DIP switch settings specifically, but a copy of the manual would be
very helpful.
It's missing two chips...a 74LS74 at U6 and a 25LS2521 at U10. The
memory array is 8 columns of 8 chips, type MM2147J. I'm thinking that these
are 2kx1 chips, resulting in a 16k board.
Any help appreciated. Thanks.
Rich Cini
Collector of classic computers
Build Master for the Altair32 Emulation Project
Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/
/************************************************************/
I've got one of these that I used extensively a
few years ago (superceded by AS300 4/266 and
then a C*q DS10) that won't do anything at all.
No SRM console comes up.
Problem is that about 3 years ago I removed the
memory, which consisted of what it came with
(DEC standard 32 MB) plus a 64 MB set which I
believe was actually an IBM product. When I
took the faithful 2000 out of service I put as
much of its memory as I could into the AS 300
4/266, and gave the AS300 it to a client (out of
state). When I went back to the 2000 to get it
ready to give away to a student group that wants
to run Linux on it, I realized that I'd removed
all of the memory and could not remember how to
populate the slots. I do remember that when I
put the 64 meg in it wouldn't work at first, but
Field Service told me I had to interleave the 8
mb sticks and the 16 mb sticks.
So, I'd be grateful if anybody could answer
these questions:
1. How are the 8 slots populated, normally?
2. Should I see the SRM even with no memory, or
memory incorrectly installed?
3. Is "54-21246-FA" (2MX33) DEC memory AS2000
memory or AlphaStation 200 memory? (I've had a
few of those around the shop over the years).
Thanks in advance. I'm glad I found this group.
I started my business with a VT103 / RX02 / RT11
v3 combo, went through Micro-11/23, then 73,
then MicroVAX 3100, AS2000, AS300, and now the
DS10.
Don Mitchell
runtime(a)wzrd.com
www.run-time.com
Thanks, Huw. It came up with 4 sticks of 4 MB
36bit memory, placed n alternate slots down from
the top. I now think that it won't ever come up
w/o 4 sticks of something -- I had 2 sticks of
16mb memory (the other 2 went into the 300
4/266) and I guess it just won't boot w/o 4
sticks.
Thanks again. Now the kids can have it and do
their Linux thing. I'll chase down some memory,
or they can.
Don
Was'nt the "spo256" a ti voice synth chip or was it a
gi product.
i do remember when radio shack carried the spo256 and
the companion text to speech chip (cannot remember the
part number for that chip)
Bill.
Message: 42
From: "Davison, Lee"
<Lee.Davison(a)merlincommunications.com>
To: "'cctalk(a)classiccmp.org'" <cctalk(a)classiccmp.org>
Subject: RE: Old TI analog sound chip; info?
Date: Tue, 17 Dec 2002 09:02:10 -0000
Reply-To: cctech(a)classiccmp.org
> I'm looking for the documentation for the olde TI
analog
> sound chip; this dates back to the late 70's early
80's if
> my memory serves me correctly. I don't even
remember the
> part number. AFAIK, it had some kind of "I2L" (I
squared
> el) technology or somesuch, and it was mostly
analog, with
> some digital control (but nothing like a DSP or
midi).
> Anyone recall this chip? Anyone have the datasheet
for
> it online or willing to scan it in?
SN76477N,
http://rgvac.978.org/chips/sn76477datasheet.pdf
> Background: I remember playing with it a *long*
time ago,
> and wanted to model it in software :-)
I remember it well, it was the canine gonads until the
AY3-8910
and it's ilk appeared.
Cheers,
Lee.
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Hi, John.
I got your address whilst searching for info on a TEK 213; you came up on a
chat room. I bought a 213 recently at a government auction here in
Australia, but it doesn't work properly. The 213s seem to be as rare as
rocking-horse-droppings here, and I can't find a manual. Are you able to
copy the manual you have?? If so, what would it cost?? If it's too
difficult or expensive, maybe just the circuit diagrams & views of the PCBs.
I'm not sure about postage, it might fit a large Global Priority Envelope at
US$9.
I'd appreciate any help.
Regards, Kerry.
I am trying to identify various computers that have had their ports
situated in the front of the chassis as opposed to the back.
The Atari 800 would be one example (game ports in the front). Are there
any other examples anyone can think of, especially where peripheral (disk,
printer) or perhaps network ports are concerned?
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
* Old computing resources for business and academia at www.VintageTech.com *
Found a Micro Genius IQ-501 Computer Game console and one
controller/joystick for it at a thrift. It's a NES/Famicom Pirate Clone.
You can see it a this site page down to the bottom:
http://www.gamersgraveyard.com/repository/nes/pirate/pirate-clones-A-M.html
Also got a couple books in from Amazon; the one called High Score! the
illustrated history of electronic games is a good source of info and
pictures of old consoles. The other book called "the ULTIMATE History of
Video Games" I have not started yet.
My copy of Collectible Microcomputers came by mail today and I hope to start
reading it soon.
I've been looking for a replacement uA79MG negative voltage regulator for
awhile, but so far haven't been able to find one. It is for a custom power
supply for an embedded system made in the early 1980s. Fairchild's part
number for the device is uA79MGU1C, which they call a 'Power Watt'
package. It actually looks like a TO-220, but has 4 leads. The regulator
bolts to a heat sink on the supply's board.
I need at least one of these parts, but could use a spare or two if
someone has a bunch hiding away in their parts cabinet. I could also use a
couple spare uA78MG (uA78MGU1C) regulators too, but they would just be put
away as spares for these power supplies.
-Toth
From the its been way too long to remember department...
I just put an old HP SCSI 9-track tape drive on my 4000/400 running
Vax/VMS 5.2... Does VMS probe SCSI devices at boot time? Is there a
way to access this drive without re-generating the system..?
David
------------------------------------------------------------------------
-
David HM Spector spector(a)zeitgeist.com
software architecture - network/security consultation
technical due diligence - technology planning/analysis
Office:(631)261-5013 Cell: (631)431-5756
Hi,
I'm rather new inhere.
I've got into my garage an IBM 5120 machine with his printer and an external
diskette unit with 8 inch flops.
I've got also all documentation and technical documentation of it together
with all operation disks.
It's running on APL (A Program Language) and it is working.
Does someone know if this is a machine that is worth something?
Please advise... it's rather huge and heavy and it is standing now in my
garage which is rather moisty and cold..., mayby I have to move it somewhere
else if it's worth it...
Michel Wouters
I found this thread from 4 years ago. I'll give it a try...
http://www.classiccmp.org/mail-archive/classiccmp/1998-09/0953.html
>From: "R. D. Davis" <rdd(a)rddavis.org>
>Reply-To: cctalk(a)classiccmp.org
>To: cctalk(a)classiccmp.org
>Subject: Re: PDP11/44 update, dead wierd fan (35VAC, 75Hz)
>Date: Wed, 18 Dec 2002 22:06:28 -0500
>
>What you don't need is a replacement fan. :-) I had a similar problem
>when I got my 11/44 several years ago; Tony Duell kindly instructed me
>on the _proper_ way to solve this problem.
_________________________________________________________________
STOP MORE SPAM with the new MSN 8 and get 2 months FREE*
http://join.msn.com/?page=features/junkmail
I seem to remember that eather "radio electronics" or
"rainbow" magazine had an article on how to build a
computer audio tape conditioner.
it was for the coco.
On Tuesday 17 December 2002 9:50 pm, tim lindner
wrote:
> I am looking for information regarding how various
computers wrote
> information to audio tapes.
>
> For example, the Tandy Color Computer wrote ones and
zeros to audio
tape
> in the following format:
>
> 'one bit': one sinusoidal cycle @ 2400 Hertz.
> 'zero bit': one sinusoidal cycle @ 1200 Hertz.
>
> The bit rate is variable on a CoCo tape. But
averages to about 1500
bits
> per second.
>
> I am contemplating creating an audio tape anaylzer
to help me recover
> some data. I would like to make the program useful
to thoes outside
the
> Color Computer community. But first I need to
understand all of the
> different methods used to put data on audio tape.
--__--__--
__________________________________________________
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Chris,
are you talking about the sys/32?
i have never heard of the sys/23.
i do have some sys/32 disks - not the ones you
mentioned, though.
i still have the manuals (tech binders) with the
schematics and trouble shooting stuff and i may have
the sys/32 ssp and a few other disks around here
somewhere.
i still have two sys 34's and one sys/36 in my
collection - one of the 34's and the 36 are rare
config's - they both have extended chassi's and extra
hard (disk) drives in them.
the 34 has 2 hd's and the 36 has three hd's.
it's really interesting that the 34 has 8 inches of
chassi added to it and the 36 has three feet of chassi
added to it.
i do have alot of sys/36 software and some sys/34
software.
if you do have a sys/32 - you can have the manuals and
software - just arrange shipping.
i no longer have a sys/32 and no longer need the
stuff.
Bill (n8uhn at yahoo dot com)
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In a message dated 12/18/2002 7:53:39 PM Eastern Standard Time,
cisin(a)xenosoft.com writes:
<< > > And it's usually NOT a good idea to put your LAST boot disk into the
> > drive! Although normally not a problem with most "normal" drives, there
> > have been SOME (most notably Apple ][) that were capable of malfuntioning
> > in ways that would cause them to erase/wipe/damage/ diskettes even when
> > write-protected!
> > What an amazing feature!
On Wed, 18 Dec 2002, Tony Duell wrote:
> _Any_ drive if malfucntioning could have write-gate stuck on and also
> ignore the write protect line. After all, those signals are combined in
> the logic circuitry somehow, and those gates could malfunction.
Ooops!
I meant to say that on the Apple ][ a malfunctiong disk controller could
override write protect, even on a non-malfunctioning drive. THAT is the
special unique feature.
>>
I had that happen once! Ruined a number of my floppies until I finally
figured it out. Bought one from Jameco for either $50 or $80 way back in the
late 1980s.
--
Antique Computer Virtual Museum
www.nothingtodo.org