Somewhat similar story walks you though porting an existing game to a Z80 Kaypro. The author is able to get the straight port from 0.25 FPS to 4FPS with some op

Somewhat similar story walks you though porting an existing game to a Z80 Kaypro. The author is able to get the straight port from 0.25 FPS to 4FPS with some optimizations. Which is impressive given what you have to work with for graphics there. http://www.chrisfenton.com/dd9-kaypro-edition/ http://www.chrisfenton.com/dd9-kaypro-edition/