Re: More tapes - This time all Tektronix 405x series

t; From: cctalk on behalf of Pete Lancashire > via cctalk > Sent: Thursday, June 21, 2018 11:06 AM > To: mmcgra...@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

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

Lancashire via cctalk Sent: Thursday, June 21, 2018 11:06 AM To: mmcgra...@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

Re: More tapes - This time all Tektronix 405x series

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@classiccmp.org> wrote: > I was successfull at capturing all the files fr

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@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

Re: More tapes - This time all Tektronix 405x series

, biorhythm, etc. Randy From: cctalk on behalf of Monty McGraw via cctalk Sent: Thursday, June 21, 2018 5:39 AM To: General Discussion: On-Topic and Off-Topic Posts Subject: RE: More tapes - This time all Tektronix 405x series I was successfull at capturing all

RE: More tapes - This time all Tektronix 405x series

I was successfull at capturing all the files from a Tektronix 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 First I

RE: More tapes - This time all Tektronix 405x series

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 First I replaced the

Re: More tapes - This time all Tektronix 405x series

Fascinating...thanks for sharing this! So the tape drive was integrated into the chassis hardware. Now that's proprietary. I don't even see evidence of a CRC or checksum in the documentation. Do you think that each record has one, and they just didn't document it? Anyway, very interesting,

Re: More tapes - This time all Tektronix 405x series

http://bitsavers.informatik.uni-stuttgart.de/pdf/tektronix/405x/070-2065-00_4051_Service_Vol1_May77.pdf pages 6-37 to 6-41 The format and drive was all done in house. It was originally done on a horizontal external GPIB drive, the 4923. Tek was on of the first users of the cartridge. But for non

Re: More tapes - This time all Tektronix 405x series

Ah, yes. I'm fascinated by the stranger formats. Now I'm even more curious, now that you say it isn't the more common QIC-11 or QIC-24 formats. Do you know what specific hardware (tape drive models, formatter boards, etc) that was used to write or read these tapes with this format? On Mon,

Re: More tapes - This time all Tektronix 405x series

I'm going to see if the Tektronix museum is interested. And if so I'm sure they can make the software available for download. As to the format, Tek decided to do it their own way. It is a funky 2 track that has issues of its own. But your method of recovering the raw track data should work as a

Re: More tapes - This time all Tektronix 405x series

Pete, These tapes look to be in beautiful condition! Do you have any plans for reading or archiving them? Do you have any idea what format the data might have been written in? If interested, my site for reading/restoring QIC cartridges of this very vintage is at http://QICreader.com Let me

More tapes - This time all Tektronix 405x series

https://goo.gl/photos/m91e3UPSvN6tHUaS7