For quite some time I was looking to acquire Santaka-002 ZX spectrum clone. There are couple of reasons why I was interested in this particular model.
One day I got lucky and purchased it online with a reasonable price. Owner even added some old pirated ZX Spectrum tapes, ( that is another topic for this blog ) and event part of its manuals! So that was a good find!
First inspection revealed that poor Santaka was broken during transportation ( probably ). Some keys were knocked out and case was broken.
After opening it I have found couple of things:
board looks pretty clean and intact so only case was messed up,
some modification were made ( or not ? that was my confusion )
some board was added.
First I started investigation from this addon board that was added to this Santaka. Reverse engineering the schematics I have found out that this is actually a joystick port. It seems Santaka-002 does no have any joystick ports and someone added one.
Video board had some tracks removed and that was a sign that it had some issues and someone was debugging and trying to find the problem. Or not ?