ly RS-485 is not in the legacy category
Numeric gloup
Martin
-Original Message-
From: Jon Elson via cctalk [mailto:cctalk@classiccmp.org]
Sent: 16 May 2024 22:20
To: Martin Bishop via cctalk
Cc: Jon Elson
Subject: [cctalk] Re: Papertape-Reader Decitek 442A9: need manual/schematics
On
On 5/16/24 15:15, Martin Bishop via cctalk wrote:
Micha
That the board is TTL and 2 layer by the look of it makes reverse engineering
rather more tractable : good luck.
The 25p D pin outs for readers/punches seem substantially standardised,
I believe the standard is RS-323 (all search attemp
ctalk@classiccmp.org]
Sent: 16 May 2024 17:02
To: cctalk@classiccmp.org
Cc: Michael Fritsch
Subject: [cctalk] Re: Papertape-Reader Decitek 442A9: need manual/schematics
I know the document on bitsavers, but the series 700 is a complete different
one.
In this reader there is no clamp or brea
It would have been quite a bit of good luck, but I thought maybe
b
On Thu, May 16, 2024 at 2:53 PM Michael Fritsch via cctalk <
cctalk@classiccmp.org> wrote:
> Thank you Bill, but the board in the link is completely different.
> The board in my reader is almost identical to the one in this a
Thank you Bill, but the board in the link is completely different.
The board in my reader is almost identical to the one in this auction (version
D vs. A):
https://www.ebay.co.uk/itm/333131813919
Only TTL-Logic, no processor, no UART, paralleöl data output.
Micha
Bill Degnan via cctalk wrote:
> On May 16, 2024, at 11:22 AM, Martin Bishop via cctalk
> wrote:
>
> It looks as though Decitek remain in business
> http://www.decitek.com/index.html
>
> Scan of a series 700 reader manual on bitsavers
> http://www.bitsavers.org/pdf/decitek/
>
> On an optical reader, I would not recon t
I have something close-ish
http://www.memex.ca/wp-content/uploads/old/M110545-Dostek-440A-BTR-User-Guide.pdf
Bill
On Thu, May 16, 2024, 10:33 AM Michael Fritsch via cctalk <
cctalk@classiccmp.org> wrote:
> I have a Decitek 442A9 papertape reader which needs repair.
>
> I have already replaced t
I know the document on bitsavers, but the series 700 is a complete different
one.
In this reader there is no clamp or breake or similar things, but a stepper motor which drives two
sprocket wheels. Between the wheels is the optical sensor.
In the moment I'm about to reverse engineer the board
It looks as though Decitek remain in business http://www.decitek.com/index.html
Scan of a series 700 reader manual on bitsavers
http://www.bitsavers.org/pdf/decitek/
On an optical reader, I would not recon the capstan running at power on as
unusual - a pinch roller which engages for drive and a
Decitek is still in business, so try decitek.com
> On May 16, 2024, at 10:13 AM, Michael Fritsch via cctalk
> wrote:
>
> I have a Decitek 442A9 papertape reader which needs repair.
>
> I have already replaced the belt, but that is not enough. The reader behaves
> very strangely. It starts run
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