Penguin Adventure: Cannot find Priest Robe

Any die-hards who can help me with ending this game ? The Priest Robe is in stage 9. Some say in the bouns level over there. Hit space bar 10 times, but didn't work. What did I do wrong ? Yeah I know it's an old game, but I want to know it ! I just got it twice ! It's after the bonus level, but I definitly did not hit space bar 10 times. What I did both times in the bonus level is not catch any fish, but directly space bar till I got RSI to both top corners, while pushing up and right or left (depending on which corner you are). After the bonus level it appered once at the right and once at the left. I will try to reproduce it. If it works for more than 10 times, I think I found it ! Cheersz It doesn't reproduce ! Sometimes it's left sometimes it's right that you need to jump. Anyone ever succeeded in (secret) warping at stage 21 ? I'm determined to figure this out. Anyone experience with decoding the Konami Megarom ? How can you list the machine code, after the cartridge is loaded ? Regards !