I have been a volunteer for a month at the Museum of the History of Computers and Computer Science in Katowice (http://www.muzeumkomputerow.edu.pl/).
I fix equipment for exhibitions.
Nice! Next time when I'm in Katowice I will visit it! (Many years ago I went with railfan friends to look at the Silesian Tramway network)
We have it in the cabinet one EP128. I took care of it today.
Is it working now?
German version. Low serial number.
Match, I have the
02944 and
02978 machines, both are German.
Inside there is an ISS6 board. Nick without a heat sink (no signs of ever being there).
The bugfixed second version of Nick (08-47) doesn't need it. Then, for some machines it was not installed in the factory. For example the previously mentioned 02944 machine.
There are also no traces of the 64KB RAM add-on module. As if it had never been there.
This is more mystic!
My guess is someone swapped the motherboards with a EP64 machine. Motherboard screws are also missing! Probably the alufoil pack is also missing which makes the GND contact at the modulator to the case metal painting. Speaker factory glued?
Rare, but some ISSUE 6 EP64 boards also exist.
Which EXOS version is installed?
Are these number stickers factory ?
Yes, I just call them "stamp style" numbers. About up to 3600 used this style. Then the "typewriter style" comes,
for example.Probably from 005000 used the regular style numbers.
