More tapes - This time all Tektronix 405x series -SERIAL PORT

[Bob Rosenbloom]

I used an GPIB to serial converter to get serial data out of my 4052. 
This allowed me to get 8 bit serial data, not just the seven the 
Tektronix serial port allowed for.
I used it to drive a paper tape punch/reader, just for fun. There are 
some on ebay. Also, an USB to GPIB converter should work.

Might help with transferring tapes.

Bob

On 6/21/2018 7:54 PM, Randy Dawson via cctalk 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
>>
>>

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