.DEFINE reg_joypad ($00)
.DEFINE reg_lcd_controller ($40)
.DEFINE reg_viewport_y ($42)
.DEFINE reg_viewport_x ($43)
.DEFINE reg_bg_palette ($47)
.DEFINE reg_obj0_palette ($48)
.DEFINE reg_interrupt_enable ($ff)

.DEFINE VRAM_start $8000
.DEFINE OAM_start $FE00

.DEFINE mem_bunny_x_px ($80)
.DEFINE mem_bunny_y_px ($81)
.DEFINE mem_button_direction ($82)
.DEFINE mem_moving_sprite_direction ($83)
.DEFINE mem_moving_animation_step ($84)
.DEFINE mem_sprite_direction ($85)
.DEFINE mem_bunny_x ($86)
.DEFINE mem_bunny_y ($87)

.DEFINE enum_direction_left $01
.DEFINE enum_direction_right $02
.DEFINE enum_direction_up $03
.DEFINE enum_direction_down $04