Soviet Union clone of circuit board for Beta-Disk controller, without ROM chips.
<a href="https://en.wikipedia.org/wiki/ru:User:Batareikin" class="extiw" title="w:ru:User:Batareikin">Batareikin</a> at <a href="https://en.wikipedia.org/wiki/ru:" class="extiw" title="w:ru:">Russian Wikipedia</a>
Transferred from <span class="plainlinks"><a class="external text" href="https://ru.wikipedia.org">ru.wikipedia</a></span> to Commons by <a href="//commons.wikimedia.org/wiki/User:Common_Good" title="User:Common Good">Common Good</a> using <a href="https://iw.toolforge.org/commonshelper/" class="extiw" title="toollabs:commonshelper/">CommonsHelper</a>.