audio/engine_1.asm:357:	and $30
audio/engine_1.asm:469:	and $c0
audio/engine_1.asm:893:	and $3f
audio/engine_1.asm:946:	or $80 ; use counter mode (i.e. disable output when the counter reaches 0)
audio/engine_1.asm:947:	and $c7 ; zero the unused bits in the register
audio/engine_1.asm:1247:	and $c0
audio/engine_1.asm:1252:	and $3f
audio/engine_1.asm:1430:	and $c0
audio/engine_1.asm:1632:	and $3
audio/engine_2.asm:368:	and $30
audio/engine_2.asm:480:	and $c0
audio/engine_2.asm:904:	and $3f
audio/engine_2.asm:957:	or $80 ; use counter mode (i.e. disable output when the counter reaches 0)
audio/engine_2.asm:958:	and $c7 ; zero the unused bits in the register
audio/engine_2.asm:1310:	and $c0
audio/engine_2.asm:1315:	and $3f
audio/engine_2.asm:1493:	and $c0
audio/engine_2.asm:1695:	and $3
audio/engine_3.asm:357:	and $30
audio/engine_3.asm:469:	and $c0
audio/engine_3.asm:893:	and $3f
audio/engine_3.asm:946:	or $80 ; use counter mode (i.e. disable output when the counter reaches 0)
audio/engine_3.asm:947:	and $c7 ; zero the unused bits in the register
audio/engine_3.asm:1247:	and $c0
audio/engine_3.asm:1252:	and $3f
audio/engine_3.asm:1430:	and $c0
audio/engine_3.asm:1632:	and $3
engine/battle/animations.asm:1917:	and $3 ; is it H-blank?
engine/battle/animations.asm:2389:	and $7f
engine/battle/animations.asm:2396:	and $80
engine/battle/animations.asm:2424:	and $7f
engine/battle/animations.asm:2430:	and $80
engine/battle/animations.asm:2431:	xor $80
engine/battle/animations.asm:2643:	and $7f
engine/battle/core.asm:509:	xor $1
engine/battle/core.asm:659:	xor $1
engine/battle/core.asm:663:	xor $1
engine/battle/core.asm:2646:	and $3f
engine/battle/core.asm:2726:	and $3f
engine/battle/core.asm:2880:	and $3f
engine/battle/core.asm:4045:	and $3
engine/battle/core.asm:4073:	and $3f
engine/battle/core.asm:4076:	and $3f
engine/battle/core.asm:4080:	and $3f
engine/battle/core.asm:4084:	and $3f
engine/battle/core.asm:4093:	and $3f
engine/battle/core.asm:4106:	and $3
engine/battle/core.asm:5014:	xor $01
engine/battle/core.asm:5019:	xor $01
engine/battle/core.asm:5058:	xor $01 ; flip turn for the stat modifier raising function
engine/battle/core.asm:5077:	xor $01 ; flip turn back to the way it was
engine/battle/core.asm:6048:	and $3
engine/battle/display_effectiveness.asm:3:	and $7F
engine/battle/effects.asm:44:	and $7
engine/battle/effects.asm:61:	and $7
engine/battle/effects.asm:783:	and $1
engine/battle/effects.asm:802:	and $1
engine/battle/effects.asm:953:	and $3
engine/battle/effects.asm:958:	and $3
engine/battle/effects.asm:1095:	and $3
engine/battle/effects.asm:1099:	and $3
engine/battle/effects.asm:1144:	and $3
engine/battle/effects.asm:1226:	and $3
engine/battle/effects.asm:1306:	and $3
engine/battle/effects.asm:1335:	and $3f
engine/battle/effects.asm:1346:	and $7
engine/events/give_pokemon.asm:23:	and $7f
engine/events/heal_party.asm:53:	and $c0
engine/events/hidden_objects/vermilion_gym_trash.asm:90:	and $e
engine/events/poison.asm:11:	and $3 ; is the counter a multiple of 4?
engine/gfx/mon_icons.asm:25:	xor $1
engine/gfx/palettes.asm:330:	and $07
engine/gfx/palettes.asm:465:	and $3
engine/gfx/palettes.asm:497:	and $3
engine/gfx/sprite_oam.asm:60:	and $80
engine/items/item_effects.asm:1736:	and $80
engine/menus/display_text_id_init.asm:66:	and $fc
engine/menus/main_menu.asm:200:	and $c ; did the enemy press A or B?
engine/menus/main_menu.asm:204:	and $c ; did the player press A or B?
engine/menus/main_menu.asm:209:	and $c ; did the player press A or B?
engine/menus/main_menu.asm:219:	and $3
engine/menus/main_menu.asm:652:	and $3f
engine/menus/naming_screen.asm:201:	xor $1
engine/menus/save.asm:320:	and $7f
engine/menus/save.asm:437:	and $7f
engine/menus/save.asm:458:	and $7f
engine/menus/save.asm:581:	and $7f
engine/movie/trade.asm:315:	xor $1
engine/movie/trade.asm:602:	xor $3c ; make link cable flash
engine/movie/trade.asm:747:	xor $1
engine/overworld/cut.asm:109:	xor $60
engine/overworld/cut2.asm:19:	xor $64
engine/overworld/cut2.asm:69:	xor $64
engine/overworld/elevator.asm:15:	xor $fe
engine/overworld/elevator.asm:58:	and $3
engine/overworld/movement.asm:79:	and $3
engine/overworld/movement.asm:317:	and $3
engine/overworld/movement.asm:358:	and $7f
engine/overworld/movement.asm:692:	and $7f
engine/overworld/movement.asm:886:	and $3
engine/overworld/pathfinding.asm:150:	and $3
engine/overworld/player_animations.asm:228:	xor $1 ; make the bird flap its wings
engine/overworld/player_animations.asm:302:	and $3
engine/overworld/player_animations.asm:345:	xor $1
engine/overworld/player_animations.asm:455:	xor $1
engine/overworld/tilesets.asm:50:	and $1
engine/overworld/tilesets.asm:53:	and $1
engine/overworld/update_map.asm:69:	and $3
engine/overworld/update_map.asm:70:	or $98
engine/overworld/update_map.asm:97:	and $3
engine/overworld/update_map.asm:98:	or $98
engine/pokemon/bills_pc.asm:154:	and $7f
engine/pokemon/bills_pc.asm:239:	and $7f
engine/pokemon/experience.asm:61:	and $7f
engine/pokemon/experience.asm:96:	and $80
engine/pokemon/status_screen.asm:367:	and $3f
engine/slots/game_corner_slots2.asm:3:	and $8
engine/slots/slot_machine.asm:226:	xor $1
engine/slots/slot_machine.asm:459:	xor $40
engine/slots/slot_machine.asm:700:	xor $40 ; make the slot wheel symbols flash
home/delay.asm:17:	and $80
home/move_mon.asm:113:	and $1
home/move_mon.asm:119:	and $1
home/move_mon.asm:126:	and $1
home/move_mon.asm:131:	and $1
home/overworld.asm:1466:	and $e0
home/overworld.asm:1470:	and $1f
home/overworld.asm:1480:	and $e0
home/overworld.asm:1484:	and $1f
home/overworld.asm:1499:	and $03
home/overworld.asm:1500:	or $98
home/overworld.asm:1513:	and $03
home/overworld.asm:1514:	or $98
home/overworld.asm:1721:	and $03
home/overworld.asm:1722:	or $98
home/overworld.asm:1735:	and $e0
home/overworld.asm:1739:	and $1f
home/overworld.asm:2202:	and $3f
home/uncompress.asm:254:	and $1
home/vcopy.asm:72:	and $3
home/vcopy.asm:73:	or $98
home/vcopy.asm:105:	and $1f
home/vcopy.asm:108:	and $e0
scripts/VermilionCity.asm:19:	and $e