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"Galaksija" or Galaxy in Serbian, was a DIY computer from Yugoslavia, invented by Voja Antonić in 1983
It ran on a Zilog Z80 at 3Mhz and had 6K RAM and 8K ROM max. You built the whole thing, including the keyboard
Here's the complete listing from the Računari magazine (January, 1984) with the complete build instructions including the keyboard wiring (language is Serbian, I think)
http://www.voja.rs/galaksija/0102.htm
And the ROM-a B instruction set http://www.voja.rs/galaksija/ROM%20B%20Listing%20Scans/ROM_B_listing.htm
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