Re: Diehl Combitron

[Paul Koning via cctalk]

> On Jul 19, 2017, at 8:01 PM, Brent Hilpert via cctalk  
> wrote:
> ...
> Very nice, in addition I much appreciate the use of the period-appropriate 
> oscilloscope.
> 
> I've been offered a Tek 500 series recently, I'm reluctant to take it on as 
> they are in practice such boat anchors
> compared to a modern scope, but I hate to see them scrapped. They were *the* 
> scope of the '60s.

They are nice.  I used one for years, finally sold it after acquiring a 7603.  
The only trouble it ever gave me was air in the high voltage rectifiers, which 
wasn't all that hard to fix; the rectifier tubes were surprisingly easy to find.

paul

Re: Diehl Combitron

[Rick Bensene via cctalk]

This is a truly wonderful accomplishment, as well as a great remembrance of a 
true genius in early electronic calculator design, not to mention computer 
design.  

Stan Frankel isn't all that well known, but those that do know of him hold him 
in high regard. He was a master of minimizing circuitry yet still providing 
great functionality. He deserves more of a place in history than he has 
received, but fortunately, more and more recognition of his accomplishments are 
being acknowledged by historians as time goes on.

I will pass this posting on to his son, Allan, with whom I communicate with 
frequently. I am sure he will love this remembrance of his father.

Rick Bensene
The Old Calculator Museum
http://oldcalculatormuseum.com


From: Christian Corti via cctalk <cctalk@classiccmp.org>
Sent: Jul 19, 2017 4:20 AM
To: cctalk@classiccmp.org
Subject: Diehl Combitron

Hi,
I want to share the latest result of a bachelor thesis in our museum. We 
are now able to program and load arbitrary machine programs and run them 
on the Combitron. As a proof-of-concept, the student wrote an hommage to 
Stanley Frankel, the designer of the CPU, by writing a boot tape that in 
the end, fills the M delay line with data that is displayed on a scope, 
triggering to the beginning of a 110 bit word.

http://computermuseum.informatik.uni-stuttgart.de/pics/combitron/sf1.jpg
http://computermuseum.informatik.uni-stuttgart.de/pics/combitron/sf2.jpg

Christian

Diehl Combitron

[Christian Corti via cctalk]

Hi,
I want to share the latest result of a bachelor thesis in our museum. We 
are now able to program and load arbitrary machine programs and run them 
on the Combitron. As a proof-of-concept, the student wrote an hommage to 
Stanley Frankel, the designer of the CPU, by writing a boot tape that in 
the end, fills the M delay line with data that is displayed on a scope, 
triggering to the beginning of a 110 bit word.


http://computermuseum.informatik.uni-stuttgart.de/pics/combitron/sf1.jpg
http://computermuseum.informatik.uni-stuttgart.de/pics/combitron/sf2.jpg

Christian