hello there mate
makron is more suited for arcade boards based on the dreamcast (NAOMI) then for casual dreamcast emulation.
there are two good emulators for "normal" dreamcast gaming.
1) Demule,strong emulator that can play NAOMI 1/2 games as well as other systems,not very user frindely since the team translated it from Russian.
2)NullDC,good,fast,play nearly all games.
the "trick" is to use the latest svn build and not the last official stable version on the project homepage.
follow the white rabbit at:
http://www.emucr.com/2013/03/nulldc-svn-r150.htmledit: don't forget to set the right bios for the right region of the game you try to play,you can "patch"/set it to auto region in the config menu.
also don't forget to set up the vmu (memory card) or you wont be able to save.