Comments on: Tektronix Logic Analyzer

By: Peter

Peter — Sun, 18 Apr 2021 21:03:28 +0000

Vintage Tek have the micro fiche of most of the older Tektronix service manuals.

For a donation of $15 they will provide you with a download link to the relevent service manuals. Bob Hass is most helpful.

They have the 1200 series service manual including RS232 and parallel printer option modules.

They also have the user guides for the PM40x series disassembler modules though not the servicing details for them.

I have the 6800 & 6809 (pm406 & pm407) modules for mine. I would be very interested in swapping photos of the internals of the modules, I am particularly interested in getting a Z80 module, thoughts are to see if I could modify / change the firmware rom in one of my motorola modules to support the Z80.

BTW 1200 series use a number of 6502 processors internally.

Serial & parallel options also have additional ROMs

Peter

By: Floopy

Floopy — Sun, 04 Nov 2018 18:35:47 +0000

Hello, I’m writing up wiki pages on the Tektronix 12XX series logic analyzers. I don’t have pictures for the 1220 and I’m wondering if I could use the ones you have.
http://w140.com/tekwiki/wiki/Main_Page
Let me know!

By: peter

peter — Mon, 11 Jun 2018 22:09:23 +0000

Keith,

How far did you get with the 6502 pod? pm403

I have a 1225 (48 channel version of 1220). I have 3 x P6442 probes – these seem to be straight forwards TTL.

The manual says that you can use P6442 or P6443 or P6444 probes but that the P6442 are not compatible with the others ie the 1225 either has all P6442 probes or a mix of P6443/P6444 probes.

There are 2 x cpu boards in mine one with video generation on it and the other with battery backup and that carries the serial , oarallel and ieee488 interface options. I only have the parallel printer option. Both the CPU boards contain 6502 processors.

Then in mine there are 3 x datacapture cards one for each probe so I presume that the 1220 only has 2 x data capture cards fitted.

I am very interested in photo / diagrams / prom contents for the PM403 6502 disassembler pod.

Peter

By: Wayne Pavy

Wayne Pavy — Sat, 09 Mar 2013 08:07:24 +0000

Keith Thank you for your webbsite it is informative,please do not bother of photographing your boards as I expanded your internal photograph which shows two boards so it is easy enough to know where the last board goes even though I have a 1220 the bottom two boards are different than yours.Regards Wayne

By: Wayne Pavy

Wayne Pavy — Wed, 13 Feb 2013 03:00:09 +0000

Could you please photograph the different circuit boards and list the position of them.I dismantled mine and the bottom two boards look similar but the jumper positions are different and I forgot which is the bottom board.I would certainly appreciate it if you could put the photographs on your web site.Regards Wayne

By: Dan Roganti

Dan Roganti — Thu, 03 May 2012 23:25:36 +0000

oops, I skipped right over the picture you have of the guts. You mention it looks like a portable 6502 computer. Is that all that’s in here ? That should be a breeze. Now we would have to figure out the Software I/O for how it manages to configure the settings inside the Logic Analyzer. I’m not sure if the manual will tell use this – if I find one.

By: Dan Roganti

Dan Roganti — Thu, 03 May 2012 23:21:37 +0000

oh and about the processor pod itself. I forgot to mention, it’s very easy to reproduce this, nothing but good ol’ TTL logic in there. It’s not like the Logic pods we have, as pictured here on your website.

By: Dan Roganti

Dan Roganti — Thu, 03 May 2012 23:19:38 +0000

Hi Keith,

Just a thought, I’m thinking about reproducing the Processor pod for the 602. And perhaps if I dig around some more, I hope to find the info on how to program this to clone a 8080 and Z80 processor pod.

There’s an EPROM in the processor pos which is loaded into the 1230 series analyzers to configure the settings, trigger memory or I/O operations and also map the 6502 instruction set so you can trigger on the target’s firmware.

I have to find a manual for the 1230 to see what processor they use, maybe it just another one of the 8bitters. Then it should make programming easier. Sometime later, I can upload the Eprom in the processor pod, so we could all try to disassemble it.

By: Dan Roganti

Dan Roganti — Fri, 25 Mar 2011 02:29:47 +0000

Sorry for the late reply, I lost track of your website
I’m not sure if you found this yet.
There’s a website which has a pdf file of the 1230 brochure.
I made a typo in my last post, I actually have the 1230 LA.
This shows all the available accessories and pods for this model.
I downloaded it before the site disappears.
http://www.tucker.com/webimages/productpdf/00001837.pdf
I’ll have to take a break one day and open it up to take some pics.
It would be great if we could reverse engineer this for other processors.
Then you wouldn’t need to buy more processor pods.
You could then make some sort of adapter instead for the different cpu pinouts.

By: Keith Neufeld

Keith Neufeld — Mon, 23 Nov 2009 22:29:00 +0000

Andrea, I have the impression that the P6442, P6443, and P6444 all work with the 1220, 1225, and 1230, but I don’t actually know for sure.