using these would require you to go and check which treasure chests you have opened and I don't know if the devs have ported all the old passwords or not. I believe the port is completely faithful though.
There are many more passwords, as they code for your current status in game
Here's a password generator: http://www.smspower.org/uploads/Cheats/WonderBoyIII-SMS-passwords.html
And the explanation on how it works: http://www.smspower.org/forums/12882-PasswordGeneratorForWonderBoyIIITheDragonsTrap
The autosave system works exactly like the passwords, as in they save your status but puts you back in town. Saves and passwords are completely interchangeable. (autosave is like the console writing down and inputing the password for you)