Comment by utopcell

Most clones I've seen don't look that great, but this one's nice. I noticed that the PCB has no ULA. I'm reading that it was impossible to procure in the USSR because of embargos so the designer, Sergey Zonov, reverse-engineered it and used 74xx ICs. That ..is an impressive feat. It has been replicated by Chris Smith, but by actually opening up a ULA and looking at the circuit. Doing this blindly is just awesome.