I do understand I will probably have to change the code of this game I just want to know how.
Anyone has any idea?

True, I don´t see any control options in the Dosbox configuration for the first game.
By the way, does it have any passwords, or you always have to start from the beginning, old-school-arcade style?

True, I don´t see any control options in the Dosbox configuration for the first or second game.
By the way, does the first one have any passwords, or you always have to start from the beginning, old-school-arcade style?

The game is running under DosBox. It is possible to change keyboard mapping in DosBox. You can switch to KeyMapper with Ctrl+F1 combination. Here is simple instruction. There are 4 jumping letters (or numbers) on each level. Every time you're starting the game you can select:
"1 - Start from level 1" or "2 - Password". Just hit 2 and enter the last code you've seen in the game. Remembering those codes is almost like save-load mechanism ;)

I believe this is for Prehistorik 2. Is there any save mechanism for Historik 1? it would be nice to have some rest between the levels because the game is difficult/exhausting. :-)