Player position, health and inventory
SystemID NES
0454 b u 0 RAM x--pos on screen
00FD b u 0 RAM x-screen
048C b u 0 RAM y-pos on screen
00FC b u 0 RAM y-screen
0052 b u 0 RAM Bullets
0053 b u 0 RAM Standard bullets
0054 b u 0 RAM Silver bullets
005F b u 0 RAM Health
04E0 b u 0 RAM x sub-pixel speed
0470 b u 0 RAM x-pixel
0684 b u 0 RAM Boss health