26 Jun
2004
26 Jun
'04
3:32 p.m.
I'm looking for a standalone paper tape reader/punch combo. Something along
the lines of like a DSI 2400, but I'd really prefer a facit 4070. Must have
Rs232 interface.
Perhaps I could trade a tested/refurbed HP21MX cpu for one? or??
Jay West
27 Jun
27 Jun
5:15 a.m.
I'm looking for a standalone paper tape reader/punch combo. Something along
the lines of like a DSI 2400, but I'd really prefer a facit 4070. Must have
Rs232 interface.
Most 4070s have a custom parallel interface (which is not too hard to
link up to other things, actually). There is a serial card for them which
fits inside the case and gives RS232 and current loop interfaces, but
it's _very_ hard to find. Even rarer (read : I've never seen one) is the
GPIB interface.
-tony
6 a.m.
Most 4070s have a custom parallel interface (which is not too hard to
link up to other things, actually). There is a serial card for them which
fits inside the case and gives RS232 and current loop interfaces, but
it's _very_ hard to find.
I have this card. It is a while ago since I last looked at it, but iirc
it didn't look too complex. If anyone wants to reconstruct this card,
feel free to contact me.
Jos
8:48 a.m.
[4070 serial card]
I have this card. It is a while ago since I last
looked at it, but iirc
it didn't look too complex. If anyone wants to reconstruct this card,
It's not that complex. There's the normal 40 pin UART and some TTL for
things like baud rate generation, interfacing to the 4070, etc. One
feature is a pair of '157 muxes which let you substitute a fixed cheacter
if you get a parity error or similar. I've never actually used that though.
Half the PCB is covered with the jumper instructions etched into the
copper. Very useful!
-tony
2:53 p.m.
well, if it's a simple card, perhaps I can borrow it and reconstruct another
one. Of course, I'd still need another 4070 :)
Jay
----- Original Message -----
From: "Tony Duell" <ard(a)p850ug1.demon.co.uk>
To: <cctalk(a)classiccmp.org>
Sent: Sunday, June 27, 2004 3:48 PM
Subject: Re: looking to trade for paper tape reader/punch
[4070 serial card]
though.
I have this card. It is a while ago since I last
looked at it, but iirc
it didn't look too complex. If anyone wants to reconstruct this card,
It's not that complex. There's the normal 40 pin UART and some TTL for
things like baud rate generation, interfacing to the 4070, etc. One
feature is a pair of '157 muxes which let you substitute a fixed cheacter
if you get a parity error or similar. I've never actually used that
Half the PCB is covered with the jumper instructions etched into the
copper. Very useful!
-tony
28 Jun
28 Jun
10:19 a.m.
well, if it's a simple card, perhaps I can borrow it and reconstruct another
one. Of course, I'd still need another 4070 :)
_If_ you get a 4070 and can't interface it any other way (the parallel
interface is not that strange...), then I'll trace out schematics from my
serial card.
-tony
6:51 a.m.
> I'm looking for a standalone paper tape
reader/punch combo. Something along
> the lines of like a DSI 2400, but I'd really prefer a facit 4070. Must have
> Rs232 interface.
I've got both a DSI 2400 and a GNT-4601. Both are fine. The GNT is a
little more modern, smaller, lighter, but be warned, there are a lot of
5-level versions of the machine out there (TWX/telex use) but I think
all the DSI machines are ASCII. The DSI is a little more rugged.
Both are RS-232 with hardware flow control. The GNT does three speeds,
but the DSI one speed (mine's 2400), I have no docs for the DSI and 2400
is as fast as the reader/faster than the punch so I don't care about
increasnig it.
I had to make a funny cable for each (just juggling handshake lines,
nothing serious).
Both punch mylar just fine, though I suspect the DSI will last longer
doing it -- but since it's a semi-production looking machine, they might
be worn.
7482
days inactive
7484
days old
6 comments
4 participants
participants (4)
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ard＠p850ug1.demon.co.uk -
jos.mar＠bluewin.ch -
jwest＠classiccmp.org -
tomj＠wps.com