[GreenKeys] Troubleshooting papertape reader

[David Tumey via GreenKeys]

Bill,
The Digi Edgeport (4) USB-RS-232 works very well at 110 Baud.
You can find these cheap on eBay.  You can run up to 4 TTYs simultaneously to a PC with this little gadget -  Each port can have its own baud rate - I have a ASR-33 terminal emulator running into one port and an ADM-3A @ 1200 baud into another - all playing individual games of  teletype chess.  
thanks.--daveW5DT
      From: Mike Douglas via GreenKeys <greenkeys at mailman.qth.net>
 To: B Degnan <billdeg at aol.com>; "greenkeys at mailman.qth.net" <greenkeys at mailman.qth.net> 
 Sent: Thursday, April 23, 2015 12:13 PM
 Subject: Re: [GreenKeys] Troubleshooting papertape reader
   
Bill,
You're going to want to start by isolating this problem to the reader or the printer mechanism. I'd read the tape into a file on your PC and see whether or not the LFs are being lost/garbled by the reader. If not, then you're really just chasing a printer mechanism issue with this particular symptom.
Use a terminal emulator like TeraTerm and capture the received data into a binary file. Do you still have a PC with a native serial port instead of a USB-serial adapter? Many serial adapters have problems at 110 baud.
Mike 



   

  On Thursday, April 23, 2015 10:44 AM, B Degnan via GreenKeys <greenkeys at mailman.qth.net> wrote:
   

 Hi all,
I have a question about reading a papertape.

Let's say I have two machines,  both in local mode.

I want to read in a papertape that has the following data on it:
S10400F3FF09
S11300000D7600F37E18F97E033C00004838002C7E
S113001000000000000000000000000000000000DC
S113002000000000000000000000000000000000CC
S113003000000000000000000000000000000000BC
S113004000000000000000000000000000000000AC
S1130050000000000000000000000000000000009C
S1130060000000000000000000000000000000008C
S9


Machine #1 - run the tape in the reader I get
S10400F3FF09
S11300000D7600F37E18F97E033C00004838002C7E
S113001000000000000000000000000000000000DC
S113002000000000000000000000000000000000CC
S113003000000000000000000000000000000000BC
S113004000000000000000000000000000000000AC
S1130050000000000000000000000000000000009C
S1130060000000000000000000000000000000008C

Machine #2 - run the same tape in the reader and a number of the lines do not line feed, typing over the line.  
This happens in the very beginning and every so often but enough to make it impossible to load a long program from the reader.

I have checked the reader and the form out mechanism.  Nothing obvious appears wrong to me, the unit is clean and oiled but not too much.

I welcome your suggestions.  What could be wrong?

Best
Bill Degnan
vintagecomputer.net

______________________________________________________________
GreenKeys mailing list
Home: http://mailman.qth.net/mailman/listinfo/greenkeys
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:GreenKeys at mailman.qth.net

2002-to-present greenkeys archive: http://mailman.qth.net/pipermail/greenkeys/
1998-to-2001 greenkeys archive: http://mailman.qth.net/archive/greenkeys/greenkeys.html
Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://comcents.com/tty/greenkeyssearch.html

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

   
______________________________________________________________
GreenKeys mailing list
Home: http://mailman.qth.net/mailman/listinfo/greenkeys
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:GreenKeys at mailman.qth.net

2002-to-present greenkeys archive: http://mailman.qth.net/pipermail/greenkeys/
1998-to-2001 greenkeys archive: http://mailman.qth.net/archive/greenkeys/greenkeys.html
Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://comcents.com/tty/greenkeyssearch.html

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/greenkeys/attachments/20150423/6c9d0ec7/attachment.html>