Merry Christmas and Happy Hanukkah, folks! And holiday greetings to the
rest of us celebrating Festivus!
It's time to treat yourself or your favorite nerd for the holidays, so as
my gift to you I'm offering 10% off anything with a listing date prior to
2018. Check the "Date Added" column in the warehouse item
listings--anything listed in 2016-2017 is 10% off!. If you're a previous
buyer (I know who you are) the 10% off applies to anything!
Here is the latest batch of listings:
Xerox 6085 "Daybreak" CPU
Xerox 6085 IOP Input-Output Processor (C4) board
Xerox ViewPoint 2.0 Software Installation
Xerox ViewPoint 2.0 Documentation Set (Volumes 1-6)
Xerox Desktop Publishing Series: Ventura Publisher Edition manuals
Xerox Telecopier 7032/7033 Facsimile Terminal User Handbook
Connect Computer Z183-2 WonUnder II
Western Digital VGA Plus C
Future Domain Corp TMC-830
Iomega PC2B SCSI Controller
Iomega PC2B50F SCSI Controller
Orchid ProDesigner VGA
Silicon Graphics O2 Workstation
IBM Type 7208-001 External 2.3GB 8mm Tape Drive
BM BM-401 486 CPU Breakout Adaptor
Compaq DeskPro DSM Monitor
HP 2641A/2645A/2645S Display Station Reference Manual
HP 2647A Graphics Terminal Manual Set
HP 13290A/2649A Data Terminal Reference Manual
Advanced Gravis Ultra Sound (boxed)
Universal Data Systems 212 LP Modem (boxed)
You can get to the Virtual Warehouse of Computing Wonders main index to
find links to these and many others items here:
https://docs.google.com/spreadsheets/d/1I53wxarLHlNmlPVf_HJ5oMKuab4zrApI_hi…
As always, please contact me directly by e-mail via <sellam.ismail at gmail.com>
to make an order or an offer.
Thanks!
Sellam
Fellow geeks of more mature vintage,
Do any of you guys know whether it is possible to find out to whom any IBM
equipment was sold back in the day? (Still chasing IBM 2321 Data Cell - I
never learn!)
Many thanks,
peter
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Peter Van Peborgh
62 St Mary's Rise
Writhlington Radstock
Somerset BA3 3PD
UK
01761 439 234
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Previously: Manual for Documation TM200 punched card reader
Restoration of the mechanics of my TM200 punch card reader progresses.
There's a writeup here: http://everist.org/NobLog/20180922_data_in_holes.htm#tm200
Currently I'm machining a mold to cast new pinch rollers - and there's the rub (ok kill me.)
The old rubber rollers were decayed to gunk, so there's no chance of measuring their original dimensions.
>From the mechanics, if they were just touching the steel capstan rollers they'd have been 27.1 mm Dia.
The mechanics has no adjustment or spring tension on the pinch roller positions. Their shafts are in fixed
position, so all the spring is in the rubber of the rollers.
Someone who recalls seeing one of these working, says the rubber rollers turned while the capstans turned,
so they must have been actually pressing on them.
But how much squish?
Experimenting with a similar diameter silicone roller (from a photocopier) it semes like 0.2mm of 'squish'
without a card, seems to give a good grip on a card. The cards are 0.1mm thick.
That gives a resting roller diameter of 27.5 mm.
Obviously too much 'squish' is undesirable since the roller would get permanently deformed when left idle in one position.
The 2-part silicone I'll be using for first try at casting rollers has a cured Shore A durometer rating of 60.
I'm hoping someone might have some knowledge of how much punch card reader pinch rollers should press against capstans.
Does 0.2mm squish seem right, or am I way off?
I can try multiple iterations, boring the mold out a little more to make the rollers bigger.
But it would be nice to get it right first time.
I don't yet have a TM200 manual, but the M200 manuals seem to cover pretty much identical mechanics. They give
no dimensions for the rubber rollers, no mention of the contact pressure, or even diagnosing if the rollers are worn.
There are significant differences in the electronics between the M200 and the TM200. I'm really going to need a manual
with schematics once I get to debugging and interfacing the electronics.
Bitsavers only has M200 manuals, and Al Kossow doesn't seem to have had any luck with
> I'm pretty sure I just saw a paper copy of the TM200 manual
> which is different from the M200. I'll have to dig around to
> try to find it again.
If anyone can suggest a source. I'd like to buy a paper copy. Which I'll scan and post at bitsavers etc.
Guy
Do any of you more venerable IBM types know of a way to open one of these to
extract the tape contained inside? It looks a bit fiddly but there might be
a trick to it. (Apart from having the mass storage system itself.)
Many thanks to you for your information and also to Mr Kossow who kindly let
me have some of these.
Peter vp
|| | | | | | | | |
Peter Van Peborgh
62 St Mary's Rise
Writhlington Radstock
Somerset BA3 3PD
UK
01761 439 234
|| | | | | | | | |
Hi all,
I've got an Advantech Labtool48 parallel Port Programmer lately
for fifty bucks. I've got it w/o any Software, cable or documentation
and now I have a few questions.
1. Is the parallel Cable a straight one to one Cable? The Labtool48
has an male connector on the back so a standard cable wouldn't fit..
(ok, think I can reverse engeneer or at least try that if needed..)
2. This isn't a Labtool48UXP, the UXP Version seems to have an USB
connector additionally, doesn anyone know if the Software that Advantech
provides (http://www.aec.com.tw/software_files/LT48UXP_83203.exe) will
work with the Labrtool48?
3. I want to programm Altera PLD's EPM7160LC84. On many sites on the web
can be read that Advantech is providing an PDF with the required "pin
swapping Table" so the user can build adapters himselves..this seems to
be history, the link http://www.aec.com.tw/products/adapters.pdf is dead
and the wayback machine shows that it is dead for many years.
Doens someone has possibly a copy of this pdf?
TIA,
Holm
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