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East German Z80 homebrew computer design article from 1987

GlueLogic

GlueLogic

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The Hübler-Grafik-MC was a homebrew Z80 computer designed by Bernd Hübler in 1985. An article detailing how to build it was published in the book "Mikroelektronik in der Amateurpraxis 3" in 1987.

I've scanned and archived this article online. It's really detailed, so I recommend checking it out if you understand German.

The computer has a 256x256 monochrome graphical display and 64KB of RAM. The base system can run BASIC and interface with a cassette recorder, but it's designed so that CP/M could be ported to it.
 
I took a look at it, but I'm not at all fluent in Deutsch, but I did understand quite a bit by context. My grandmother spoke German fluently, but it did not pass on to my generation. :)
 
DmR said:
I took a look at it, but I'm not at all fluent in Deutsch, but I did understand quite a bit by context. My grandmother spoke German fluently, but it did not pass on to my generation. :)
Click to expand...
The Internet Archive's PDF viewer has a translation feature built in, but you have to activate it in the "Experimental" tab first.
translate.png
It's better than nothing, but it's hindered by OCR imperfections. I've been correcting the OCR manually and running it through DeepL to get a good enough translation to build my own replica. I'll attach the partial translation I have so far.

I'll also point out that there's a thread on building this computer where the builder seems to have found some errors in the original schematic. Here's his list of corrections:
bild1.jpg
 

Attachments

I'll have to hunt for it, but on Bsky there was an item about a cold-war vintage East German computer that used a Z80 clone and kind of a kludgy tape based OS. It reminded me of this homebrew project.
 
DmR said:
I'll have to hunt for it, but on Bsky there was an item about a cold-war vintage East German computer that used a Z80 clone and kind of a kludgy tape based OS. It reminded me of this homebrew project.
Click to expand...
Would it have been a KC-85?
 
Just curious, how exactly did one get a Z80 CPU in East Germany in the mid-80s?
 
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