More tapes - This time all Tektronix 405x series

[Monty McGraw]

Randy,

I had the same issue.  I have an older NI GPIB to serial adapter, and since
the Tektronix protocol was so customized - I couldn't get it to recover the
data either.

Right now I'm experimenting with a different PC serial program - which is
designed to transfer data from embedded systems like Arduino.

I would like to capture the data including the control characters without
having to convert them.

This effort is helping me get a deeper understanding of what is going on,
so I can get my GPIB flash drive designed properly.

Monty

On Thu, Jun 21, 2018 at 9:54 PM, Randy Dawson via cctalk <
cctalk at classiccmp.org> wrote:

> Hi Pete,
>
>
> Send them to  Monty - my 4051 is crippled with no serial port.  I
> currently have no way to get data in and out of this, except via Micheal's
> RAMSTORE modules.
>
>
> Monty, I also looked at emulating the tape drive, or the floppy disk over
> GPIB, that would be great, have the PC with a NI USB dongle.
>
> I could not figure out how to make the National Instruments dongle act
> like a slave, its normally the master.
>
>
> Randy
>
>
> ________________________________
> From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Pete Lancashire
> via cctalk <cctalk at classiccmp.org>
> Sent: Thursday, June 21, 2018 11:06 AM
> To: mmcgraw74 at gmail.com; General
> Subject: Re: More tapes - This time all Tektronix 405x series
>
> a few months ago i had about 20 4051/4052 tapes. if i still do i can send
> them to you
>
> On Wed, Jun 20, 2018 at 5:53 AM Monty McGraw via cctalk <
> cctalk at classiccmp.org> wrote:
>
> > I was successfull at capturing all the files from a 4051 Graphics T1 tape
> > last weekend.
> >
> > Here is the link to a couple of photos of the process:
> >
> > Capturing Tektronix 4051 Graphics T1 tape files to laptop
> > <https://drive.google.com/open?id=18hROXB28PD9Z_GYDNNSXGPK4Pv7GQD8w>
> >
> > First I replaced the disintegrated drive belt with one from a NOS 3M
> DC6250
> > cartridge.
> >
> > I used my 4051 to PC serial transfer program on my recently repaired and
> > upgraded 4054A.
> >
> > I set the comm speed of the 4054 serial interface to the maximum 9600
> baud,
> > but as it is 7-bit, my program changes all 32 Tektronix control
> characters
> > to "~X~" where X is the ASCII character corresponding to that control
> > character.
> >
> > This way I don't lose any of the Tektronix 405x text formatting in the
> > transfer.
> >
> > I was using ExtraPutty on the laptop to capture the program text strings,
> > then copied the statements into Notepad++ and saved each file.
> >
> > I am also working on a Tektronix 4051/52/54 compatible GPIB MicroSD flash
> > drive that will emulate the Tektronix 4924 tape drive - for all of us
> with
> > these computers to use - since both the tapes and drives are very
> > problematic after all these years.
> >
> > This flash drive contains an Arduino with my code - based on the GPIB
> > flowcharts and info in a 4051 and 4052 GPIB manual.
> >
> > You will be able to use the existing 405x program statements with @Y for
> > the drive GPIB address - since I don't know how to write a ROMPACK for
> any
> > of the series :)
> >
> > I plan to organize the different captured tapes in directories on the
> flash
> > - and that may mean using a non-4924 GPIB secondary address for that
> > command.  It also likely means I need to change any tape commands in each
> > program to use the flash drive GPIB address.
> >
> > That's why I wanted to capture one of the Tektronix tapes with a menu -
> is
> > to ensure I could get those files to work on my flash drive design.
> >
> > Monty McGraw
> >
> >
>