I'm looking for a circuit diagram from a computer.

Hello Conan Con> The diagram was sent to you by email. The photo you Con> published, this is most likely KAY-128, ( + AY). Scheme Con> drive controller (SPARK) may be from Costa. Thanks for the diagram and advice on my board. As it turned out, the fee was from KAY-128. Using circuits from Leningrad1+Pentagon128+KAY-256 we managed to restore computer performance and expand memory up to 128 KB. Now all that remains is to find the Circuit diagram for the SPARK drive controller. I hope Costa will find the time and opportunity to scan the diagram...