More tapes - This time all Tektronix 405x series

[Pete Lancashire]

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
>
>