Champion Boxing
Platform: MSX
Region: Japan
Media: Cartridge
Controller: Keyboard
Genre: Sports > Boxing 
Gametype: Undefined
Release Year: 1985
Developer: Sega
Publisher: Pony Canyon
Players: 1 - 2
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A straightforward championship boxing game from Sega. You can select several punches during a boxing match: straight, jab or upper. Don't get cornered and if you get hit then get up your defenses or step back. The matches can be played at four different levels of difficulty. In the game there is a referee, who counts when your opponent or you are down. The matches can be set at four difficulty levels.
 
http://www.mobygames.com/game/msx/champion-boxing