Dragon Warrior (NES 1989) Game Genie Codes

aka Dragon Quest (ドラゴンクエスト)

We posted these Game Genie codes for Dragon Warrior way back in 2005. So I'm reposting them. I'm a little over halfway through the game. Even with the codes it takes forever. I can't even believe how many hours I must have put into this game when I was a kid.

SXOIVLSA - Infinite magic points
AEVGUIZA - No damage in swamp
VVOYYTSA - Start with 256 gold coins
VKOIVLSA - Spells use only one magic point
YAKKEVYA - Barriers cause half damage