Load the games like this:
JIM CF, Press [Enter] and few times on [F1], now try to
press - and you'll see what happens.
The code you get is made from your game details (e.g.
credits, energy, life) + two letters who shoes the level code.
Type only the first two letters and after them:GMCAAA - with
no connection f what you got instead of. This will give
you 4 life, 3 credits, and full energy at any level you'll get to.
The last level's 2 letters:KF, type for code KFGMCAAA and you'll get to
the last level with maximum energy, credits...