I have a optical paper tape reader called a "TPR-1" connected to my Altair.
We bought it as a kit.
It has a pretty blue box that matches the computer.
It uses a standardized part that has phototransistors spaced correctly to
read paper tape.
The sprocket hole also has a phototransistor that is used as the clock.
This is how we always loaded Altair Basic.
I saw the manual a few days ago.
I'll see if I can scan it.
-Rob
-----Original Message-----
From: cctalk-admin(a)classiccmp.org [mailto:cctalk-admin@classiccmp.org]On
Behalf Of Andy Holt
Sent: Wednesday, November 27, 2002 1:34 AM
To: cctalk(a)classiccmp.org
Subject: RE: Optical paper tape readers
Another problem with building a paper tape reader is to ensure that the
light source is constant - in particular that it does not vary with mains
frequency!
(Memories of getting a PTR modified to work on my homebrew 6800 system 25
years ago)
Andy
>The leading A2 certainly means it's an Apple product relating to the
>Apple II family, but the M doesn't make it a mouse. Lots of things
>were A2Mxxxx, and only a tiny number were mice.
Sorry, brain fart on my part. You are of course correct. A good number of
items have M in the model number that are not mice (for instance, the
entire(?) Mac line).
-chris
<http://www.mythtech.net>
Tony,
> I do wonder just hwat is taught in universities these days :-(.
Aside from how to surf the net? Visual Basic and Java are hot topix
nowadays. :)
> Pity. IMHO, one of the main reason that soft-microcoded CPUs are
> interesting is that you can modify yhr micorocode yourself.
Dude.. I have a hard time explaining to friends what microcode *is*.
They do not get the idea of single-stepping a CPU through its microcode..
--f
Hi Godfrey:
You may be interested in the greenkeys teletype email list -- lots of good
folks with questions, answers, etc. Mostly 5-level baudot machines, but
some ascii stuff too. It averages a few emails a day (not overwhelming).
You need to go to http://mailman.qth.net/mailman/listinfo/greenkeys
to sign up. You can poke through the archives at:
http://mailman.qth.net/pipermail/greenkeys/
gil
>From: "Godfrey Manning" <cgmm(a)thersgb.net>
>To: <classiccmp(a)classiccmp.org>
>Sent: Sunday, November 24, 2002 2:00 PM
>Subject: Flexowriter
>
>
>> Does anybody in the UK (apart from me) possess a Mk. 1 Friden Flexowriter?
>> Can I be of any help (info/spares) to such a person?
>> Godfrey.
;-----------------------------------------------------------
; vaux electronics, inc. 480-354-5556
; http://www.vauxelectronics.com (fax: 480-354-5558)
;-----------------------------------------------------------
Speaking of HP 1000 diags, I recently acquired a set of HP 1000 diags on six
DC100A tapes, along with a few inches of docs in a couple of binders. I
would list the part numbers on the tapes but I don't have them in front of
me right now. Each tape contains the configurator file and then several
module level diagnostic files. Unfortunately the tapes are 20+ years old
and the oxide layer has lifted off in a few spots and I haven't been able to
read them successfully. Does anyone the full set of HP 1000 diagnostic
files that they would be willing to share?
I do have one diag file on paper tape. That was why I was interested in
acquiring a reader.
>From: "Jay West" <jwest(a)classiccmp.org>
>Reply-To: cctalk(a)classiccmp.org
>To: <cctalk(a)classiccmp.org>
>Subject: Re: HP 2784B Paper Tape Reader on ebay
>Date: Tue, 26 Nov 2002 16:49:13 -0600
>
>The 2748B paper tape reader is a very nice unit. I'm not bidding, I have
>two
>already. The connector on the reader is "v.35-ish", but not v.35. The other
>end of the cable is "proprietary" and goes to the HP 8-bit duplex register
>board. If someone has an HP box, they should definitely get this for
>loading
>diags.
>
>Jay West
>----- Original Message -----
>From: "Bill Sudbrink" <wh.sudbrink(a)verizon.net>
>To: <cctalk(a)classiccmp.org>
>Sent: Tuesday, November 26, 2002 9:53 AM
>Subject: HP 2784B Paper Tape Reader on ebay
>
>
> > Sorry if this screws up someone's snipe plans... but it was
> > offered a couple of weeks ago and closed with no bids. It
> > currently (10:50 am EST) has no bids with 11 hours to go. I
> > can't imagine that nobody one the list would want this:
> >
> > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1789314629
> >
>
>---
>[This E-mail scanned for viruses by Declude Virus]
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On Nov 26, 11:02, Glen Slick wrote:
> I was hoping there might be some sort of preassembled optical sensor
array
> available with the right spacing for paper tape holes, but maybe that is
> hoping for too much. If you build one with discrete sensors, is it easy
to
> find ones that are narrow enough to stack side to side with the correct
> spacing?
One way would be to get some Perspex (Lexan/Plexiglass) rod and make some
short light pipes, and fan them out to get the spread you need. Or make
some kind of 9-partition screen out of thin sheet metal, narrow at the top
and wider at the bottom where the detectors are. The detectors don't have
to be right up against the tape, so long as you don't get light from one
bit affecting the detector for adjacent ones.
--
Pete Peter Turnbull
Network Manager
University of York
Back in the mid-90's I kept a Poqet PC in my bag or desk to use as
an ad hoc console terminal for data center gear. Wasn't as convenient
as the then current HP palmtops, but a heck of a lot cheaper and an
easier keyboard if the HPs were a tad small for you. MS-DOS in ROM
supported Kermit nicely for ANSI terminal emulation.
California Digital (not the newbies that bought VA Linux' hardware
operation) still has them, though perhaps a bit (ahem) overpriced:
http://www.cadigital.com/poqetpc.htm
--S.
Hi
I have an old Intel tape reader ( I think it was made
by REMEX ). It was a parallel output. I took me about
20 minutes to make an adapter to plug into the bi-directional
printer port on my laptop( it took me longer to buy the
cable since I went to Fry's to buy it). I took me another
hour or so to look up the info on the parallel port to write a
simple reader to take input from the printer port to
a file.
I started without schematics or docs on the reader,
just knowing that it was parallel. One should be able to
find the output strobe and data lines with a logic probe
( although I used an oscilloscope ).
Dwight
>From: "Loboyko Steve" <sloboyko(a)yahoo.com>
>They once made these but I haven't seen any surplus in
>years.
>
>Until I picked up some paper tape readers on eBay
>(cheap - no one wants readers, they want punches) - I
>was considering making one out of tiny
>phototransistors/IR emitters using wooden strips
>masked with Mylar tape punched with the RUBOUT
>character. I definitely think this is doable. But
>seriously, I'd look at eBay, because readers with
>nonstandard interface go for cheap. I recently missed
>a complete Remex reader (with reels, etc) for $20
>(nobody bid on it), and I DO know how to interface
>these.
>
>
>
>--- "Dwight K. Elvey" <dwightk.elvey(a)amd.com> wrote:
>> Hi Glen
>> There isn't much application for things with this
>> spacing.
>> Remember, you will most likely be connecting this to
>> a
>> uP. You really don't need to space then in a
>> straight
>> line. You can stager them and reassemble the entire
>> byte width afterwards.
>> Another though would be to use one of the linear
>> arrays,
>> used in scanners. Most of these are about as wide as
>> a paper tape. You could use a collimated source and
>> drag the tape directly over the array. You'd need
>> to do a little image processing but it shouldn't be
>> too
>> difficult.
>> There are some mechanical options that might work
>> as well.
>> Like I said, use some imagination.
>> Dwight
>>
>>
>> >From: "Glen Slick" <glenslick(a)hotmail.com>
>> >
>> >I was hoping there might be some sort of
>> preassembled optical sensor array
>> >available with the right spacing for paper tape
>> holes, but maybe that is
>> >hoping for too much. If you build one with
>> discrete sensors, is it easy to
>> >find ones that are narrow enough to stack side to
>> side with the correct
>> >spacing?
>> >
>> >
>> >>Hi
>> >> Ahh, such concepts as make one come to mind.
>> You could
>> >>scrap a number of mice for the optical sensors (
>> two for
>> >>each axis, 4 total per mouse ) or you could buy
>> photo
>> >>transistors from Jameco. In a pinch, the clear
>> lensed
>> >>LED's make reasonable detectors.
>> >> Use a little imagination.
>> >>Dwight
>> >
>> >
>>
>>_________________________________________________________________
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>>
>>
>
>
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