to anyone tha is having problems running chorensha on multi core systems, i did some research and it looks like a command line tool called RunFirst will help with the issues
LINK:
http://www.activeplus.com/Products/RunFirst
EDIT: found some key commands that might help as well
Arrow keys move your ship
CTRL and Z fire
SHIFT and X are bomb
F5 sets scanlines
F1 changes to a small window on fullscreen
F4 is fullscreen
Q is pause!
like your game fast? hit G to go supersonic F to return back to normal speed
there is also one more option in the options, hold up for a few seconds and BAM! a secret options menu, now i dont want to hear about anyone using the invincibility to garner huge scores, but it alolooks like you can save a game run as well!
thats all for now, and yes the game uses joysticks as well I myself use a Gravis Gamepad
Have fun and dont forget to post your score!