Славутич (Slavutich): Part 1 (First look & power up)
44This neat little видеоигра (video game), a.k.a. a ZX Spectrum clone, is from Kyiv in post-Soviet/independent Ukraine, built in February 1993.
It features a good quality metal case and a membrane keyboard. It uses a genuine Zilog Z80 but otherwise has Soviet-era parts. They didn't skimp on decoupling capacitors in this build (they sometimes only have one for every two chips, for example).
Interestingly it uses 7-pin DIN sockets for everything, including the power supply which is simply +5VDC (no regulator required).
It has no internal speaker so an external one is required (output via the video output port).
The expansion port is implemented using a 2x32 pin connector (Soviet part СНП58-64).
On boot the machine's copyright message states:
"(c) 1993 SLAVUTICH Kiev KRZ"
The 7-pin DIN video pinout is similar to the Орель БК08 (Orel BK08):
Pin 1 = audio
Pin 2 = video (synch)
Pin 3 = blue
Pin 4 = green
Pin 5 = red
Pin 6 = ground
Pin 7 = n/c
I created a USB-to-DIN power cable.
The 7-pin power input (labelled "ПИТ"):
Pins 1/2/3 = ground
Pins 4/5 = +5VDC
Pins 6/7 = n/c
I've not looked at the cassette (МАГ) or joystick (ДЖ) ports yet.
Manual for the machine:
http://retro-pc.net/computers/slavutuch/index.php
Big thanks to Aleksey and Oles on the UCHC "Ukrainian Computing History Community" Telegram group for their help!