Nice.

Ive tested it with a few games.
It appears that pressing left (a or left crsr) moves the joystick left-up, and pressing right (d or right crsr) moves the joystick right-down.
Pressing space works as fire, but also presses something else. (space?, other fire button?... can't figure it out until i get home and test it with Amiga HW test disk.)

The problem could be specific to non English keyboard, that uses only two cursor buttons for left and right. (up and down are modified with "blue arrow" function key.)