This pong is exactly the same system as the Binatone TV Master MK IV, but marketed under a different name.
See this entry for more info...
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NAME
Sport TG 20
MANUFACTURER
Mentor
ORIGIN
Europe
YEAR
? 1977
BUILT IN SOFTWARE / GAMES
4 games : squash, squash practice, football, tennis
CONTROLLERS
Two detachable paddles with knob
CPU
General Instruments AY-3-8500 ?
SPEED
Start, Manual serve
CO-PROCESSOR
Game selection and player options (power, speed, bat size, angle, serve, sound)
