Zelda - Phantom Hourglas

I HAVE THE NO$GBA:Here is my problem, i have a mission in the King of the SeaA friend told me that i have to close the DS without shutting down the game so i can get the other side of the map, but how i do it? is impossible i need a portable to close it in the emulator cant close without shutting down there a way i can pass this chapter of the game.is been hard i cant go on

Try out the solution on this thread dude:https://www.romulation.org/forum/index.php/topic,7817.msg75700.html#msg75700 :)