20 TUs by decreasing size in ACTORLIB
terrain.o: 2196
    slabproc_*: 587
    terrain_hitscan_cb_bottomhalf: 290
    query_slab_map: 265
    terrain_hitscan_cb: 238
    measure_ladder_cb: 176
    sample_slabs_actor_offset_cb: 113
    query_slabs_near_actor: 76
    ladder_check: 71
    feet_within: 68
    floor_check: 52
    floor_ceiling_x_check: 45
    slab_path_sides: 41
    read_terrain_around_actor_cb: 36
    sample_slabs_from_query: 32
    handrail_check: 31
    actor_dont_walk_off: 23
    sample_slabs_type: 23
    actor_to_slab_x_sign: 18
    ldy_facing_wall_depth: 11
baddiesmgr.o: 1634
    enemies_hitscan: 270
    actor_handle_hurt_states: 120
    push_player_in_front_of_actor: 111
    setup_digging_duwagos: 78
    compare_actor_dist_ay_or_lure: 66
    compare_actor_dist_ay: 60
    enqueue_switch_y_item_down_a: 47
    get_player_or_lure_xy: 45
    actor_apply_faint_knockback: 39
    spawn_additional_item_y: 38
    setup_rhyllekk_ball: 30
    spawn_enemy_here_with_param: 30
    setup_dispense_linked: 29
    award_item_a_if_picked_up: 26
    setup_palette_x: 24
    setup_gas_vent: 24
    is_linked_switch_on: 24
    spawn_linked_switch_enemy_here: 24
    player_crouching_in_water: 24
    setup_hurtbox_ht_8_max_day_health_y: 21
    setup_sd_if_not_switch: 20
    setup_morse_bird: 20
    actor_face_hero_or_lure: 20
    player_or_lure_behind_actor: 20
    setup_turn_on_switch_and_sd: 19
    self_destruct_if_switch_on: 18
    setup_syyth_part1: 18
    reap_enemies_class_a: 18
    player_behind_actor: 17
    set_actor_param_to_switch_id: 16
    set_alt_palette_if_2_duwagos: 15
    get_right_wall_x: 15
    walkcycle4: 14
    damage_player_anybank: 14
    setup_petrified_fungal_wall: 13
    actor_face_hero: 13
    setup_walkee_patrol: 12
    setup_fungal_wall: 11
    setup_pickup_item: 11
    update_2_frame_faint_now: 11
    update_2_frame_faint_now_no_new_cel: 11
    actor_near_right_wall_y: 11
    actor_face_carry: 10
    actor_is_far_from_player: 10
    setup_sd_if_cf_clear: 9
    setup_alt_palette: 8
    setup_sd_if_boss_not_ready: 8
    sd_if_linked_switch_on: 8
    setup_no_hitbox: 7
    setup_dysub_nonzero: 7
    setup_flying_duwagos: 7
    update_2_frame_faint: 7
    setup_nc_boss2: 6
    setup_no_hitbox_despawn_if_switch: 6
    setup_hurtbox_ht_8: 6
    setup_gas_vent_ufacing: 6
    setup_rockwall_switch: 5
    setup_despawn_if_switch: 5
    setup_candy_and_pickup_item: 5
    walkcycle4_aframes_noinc: 5
    setup_rockwall_switch_pal3: 4
    setup_rockwall_switch_pal_a: 4
    walkcycle4_zeroafs: 4
    find_switch_sd_if_on: 3
    setup_2x_health_hero_despawn_if_switch: 3
    setup_face_hero_despawn_if_switch: 3
    setup_sd_if_not_fq: 3
    setup_switch_id_no_hitbox: 3
    update_2_frame_faint_with_dy: 3
    setup_rockwall_switch_pal2: 2
    setup_duwagos: 2
    setup_null: 2
    enqueue_switch_y_item: 2
    walkcycle4_aframes: 2
    actor_near_right_wall: 2
ropes.o: 1034
    ropeseg_top: 145
    hook_update: 132
    cut_off_rope_y_at_platform: 128
    measure_rope_x_seg_4y_cb: 95
    terrain_inside_add_rope_y: 94
    qsm_find_zeroht: 88
    load_level_ropes_cb: 66
    hook_fire: 64
    spawn_xy_within_piton_cb: 53
    drop_rope_at_piton: 51
    actor_get_nonpiton_info_cb: 38
    actor_within_rope_cb: 37
    find_unused_rope: 22
    query_slab_map_ab: 13
    actor_within_piton_cb: 3
    terrain_inside_add_actuator_rope: 2
    ropeseg_list: 1
    ropeseg_map: 1
    ropeseg_x: 1
actorclasses.o: 809
    spawn_setup_procs: 232
    spawn_frame_sub: 232
    spawn_aclass_facing_health: 232
    Hero_muzzledir: 113
Slack: 407
    __BLOCKINGCODE_slack__: 398
    __ACTORLIB_slack__: 9
bullets.o: 332
    bullets_update: 106
    make_bullet_group: 80
    make_dynamite_explosion_bullets: 43
    make_stone_sensor_dash_bullet: 17
    make_bullet_group_type_y: 16
    make_bullet_group_actor_x: 16
    find_next_free_bullet: 9
    make_syyth_bolt_bullets: 7
    make_bullet_group_type_y_actor_window_facing: 7
    make_scale_bullets: 4
    make_skitter_faint_bullets: 4
    make_boss_explosion_bullets: 4
    make_sono_dot_bullet: 4
    make_upward_gas_cloud_bullets: 4
    make_dive_warp_splash_bullets: 4
    make_bullet_group_type_y_actor_window: 3
    find_free_bullet: 2
    make_sono2_bullet: 2
physics.o: 318
    add_actor_dx: 37
    accel_actor_dy: 32
    actor_set_forward_dx: 31
    actor_update_fly_deadreckon: 26
    accelBrakeLimit_actor_dx: 24
    actor_update_fly: 24
    actor_move_dir_a_y_pixels: 24
    move_onto_actor_y: 21
    add_actor_dy: 20
    add_actor_yscr: 17
    actor_update_jump_deadreckon: 17
    brake_actor_dx: 12
    actor_move_down_y_pixels: 10
    actor_update_jump_if_dy_nonzero: 9
    actor_move_backward_y_pixels: 7
    actor_update_jump: 5
    actor_move_forward_y_pixels: 2
warps.o: 297
    query_warps: 200
    find_online_puzzle: 81
    start_warp_iter: 16
player.o: 278
    player_set_hang_frame: 218
    set_muzzle_flash_xy: 32
    set_muzzle_flash_dir: 13
    warp_exit_frame: 3
    warp_exit_dysub: 3
    warp_exit_dy: 3
    warp_exit_time: 3
    warp_exit_sound: 3
transmissiondata.txt.o: 267
    dte_replacements: 267
switchpos.o: 234
    switches_param: 234
levels.o: 102
    set_timed_switch_y: 102
undte.o: 76
    dte_getchar: 64
    dte_begin_ay: 12
birds.o: 63
    actor_second_signal_next: 63
pickups.o: 41
    start_pickup_animation: 21
    load_pickup_cel: 18
    start_crystal_pickup_animation: 2
camera.o: 32
    update_camera_target_y_masked: 30
    update_camera_target_y: 2
rolt.o: 32
    setup_rolt: 32
switchactors.o: 22
    set_frame_d0_to_switch_y: 22
syyth.o: 17
    spawn_swerving_ball: 17
warpsdata.o: 1
    null_warps: 1

52 TUs by decreasing size in HOME
mapdecoding.o: 2092
    load_fqmap_0: 358
    attr_hstrip_update: 317
    attr_vstrip_update: 267
    nt_vstrip_update: 243
    nt_hstrip_update: 167
    load_map_to_smap_same_tilewnd: 157
    setup_decode8_vert: 145
    setup_decode8_horz: 144
    decode8: 92
    nt_draw_whole_screen: 55
    set_initial_tilewnd: 35
    seek_to_map_tile_xy: 34
    bg_make_nstripe_header: 28
    find_vram_row_y: 27
    load_map_to_smap: 19
    load_fqmap_ay_sub_x: 4
levels.o: 1771
    load_level: 551
    inc_daynight: 352
    load_bg_palette: 138
    check_hidden_spawn: 122
    nstripe_append_bg_palette: 116
    reload_bgloop: 71
    apply_sepia_palettexlate: 67
    obpal_override_force: 44
    level_get_map_ptr: 27
    init_daynight: 24
    level_get_rexit_yoffset: 22
    load_strips_list: 22
    morph1ifradio_maps: 21
    actorlib_update_morph: 19
    set_effective_daynight_phase: 18
    rot_start_radio: 15
    reset_timed_switches: 14
    apply_palettexlate: 13
    run_mapproc: 13
    obpal_reload: 12
    get_area_for_map: 11
    daypart_duration: 11
    daypart_palette: 11
    daypart_timeofday: 11
    set_initial_morph: 8
    unfaint_at_dawn: 8
    default_obj_palette: 7
    flashback_obj_palette: 7
    sepia_brightnesses: 6
    obpal_underride: 5
    obpal_override: 5
main.o: 1419
    main: 572
    process_warp: 254
    handle_invalid_warp: 205
    pda_restore: 62
    circuit_puzzle_fuse_if_a: 55
    update_obj_palette_now: 43
    menu_present: 41
    pently_update_lag: 30
    puzzle_get_fuse_mask: 24
    fuse_then_circuit_puzzle: 19
    start_music_if_not_playing: 16
    resume_previous_level: 16
    move_enemies: 15
    deduct_player_health: 14
    update_obj_palette: 12
    menu_wait_a_frames: 11
    pda_present: 10
    menu_clear_oam_present: 8
    menu_clear_oam_wait_a_frames: 7
    start_boss_music: 2
    play_puzzle_game: 2
    update_obj_palette_now_nope: 1
baddiesmgr.o: 889
    compact_enemies: 177
    spawn_enemy_with_param: 151
    check_enemy_queue: 110
    enqueue_enemy: 54
    any_enemies_left: 37
    move_enemy_x: 37
    enqueue_actor_x: 32
    count_enemies_class_a: 31
    spawn_enemy_here: 27
    clear_loaded_enemies: 25
    find_enemy_class_a: 24
    get_actor_y_x_div_8: 18
    get_actor_y_xy_div_8: 17
    actor_turn_on_switch: 16
    actor_turn_off_switch: 16
    count_dormant: 14
    count_dormant_spawn_a: 14
    save_last_damage_pos: 14
    enqueue_self_later_and_reap: 13
    enqueue_self_if_far: 12
    runtime_red_alert: 12
    clear_enemy_queue: 11
    reap_actor_x: 10
    count_enemies_spawn_a: 5
    spawn_enemy: 4
    clear_enemies: 3
    get_actor_x_xy_div_8: 2
    enqueue_self_and_reap: 2
    move_dummy: 1
camera.o: 786
    prepare_bg_scroll: 248
    move_camera_cb: 247
    dec_camera_shake: 50
    update_palette_fade: 49
    morph_partial_repaint_map: 44
    camera_shake_table: 40
    morph_check_repaint: 34
    shot_shake: 18
    get_camera_shake: 17
    morph_partial_repaint: 12
    morph_repaint: 11
    set_initial_camera: 8
    move_camera: 8
spritevram.o: 726
    sprload_continue: 160
    sprload_to_sheet_slot: 98
    sprload_request_sheet: 60
    get_sheet_y_slot_bits: 44
    unload_unused_sheets: 40
    load_spritecels_pb8_pbsrc: 36
    sprload_find_actor_slots: 34
    load_8X_invtiles_to_A: 34
    sprload_loop: 26
    load_utility_cels: 25
    clear_spritecels: 23
    sprload_find_loaded_slots: 22
    sprload_ensure_sheet_y: 22
    popslide_bankswitch_blit: 21
    popslide_bankswitch2_blit: 14
    load_hero_cels: 10
    load_initial_sprite_vram: 8
    one_shl_x: 8
    popslide_vsync_blit: 6
    load_invtiles_to_2200: 6
    load_spritecels_pb8_ay: 4
    sprload_load_actor_class_y: 4
    sprload_ensure_actor_class_y: 4
    load_alphabet_to_2C00: 4
    sprload_load_sheet_y: 3
    sprload_to_slot_a: 3
    load_alphabet_to_1C00: 2
    load_alphabet_to_A: 2
    load_debughex: 1
    get_sheet_slot_bits: 1
    sprload_to_slot_y: 1
irq.o: 624
    irq_update_scroll_strips: 167
    nmi_handler: 157
    irq_split: 111
    irq_flip: 81
    irq_restart: 68
    irq_init: 40
terrain.o: 605
    load_enemy_list: 125
    actor_wall_eject: 108
    calc_hitscan_spark: 107
    load_slab_map: 103
    decompose_muzzle_flash_dir: 71
    sample_slabs_actor_offset: 16
    read_terrain_around_actor_ht_a: 12
    measure_ladder: 12
    terrain_hitscan: 12
    advance_A_bytes: 10
    bank_a_and_actorlib: 9
    skip_a_screen: 7
    slabsbank_and_actorlib: 6
    load_slab_map_ay: 4
    read_terrain_around_actor: 2
    pop_bank_and_actorlib: 1
actorclasses.o: 600
    obj_palette_data: 102
    aclass_move_procs_lo: 63
    aclass_move_procs_hi: 63
    aclass_move_procs_bank: 63
    aclass_collide_type: 63
    aclass_hurtbox_diameter: 63
    class_to_spritesheet: 63
    sheet_address_lo: 30
    sheet_address_hi: 30
    sheet_bank: 30
    sheet_num_pages: 30
popslide64.o: 549
    popslide_nonrun_base: 256
    popslide_run_base: 189
    popslide_nextpacket: 37
    isrun: 13
    popslide_terminate_blit: 11
    popslide_done: 10
    popslide_clearbuf: 9
    popslide_blit: 9
    popslide_init: 8
    popslide_run_max: 6
    popslide_rts: 1
tilerot.o: 464
    update_tilerot_x_if_dirty: 208
    rot_update: 121
    update_dirty_palrots: 97
    rot_init: 20
    rot_y_seek_a: 18
bg.o: 402
    load_pbg0: 223
    pbg_load_one_pattern_table: 52
    unpack_nametable_to_smap: 50
    screen_off_load_pbg: 39
    load_pbg_to_smap: 34
    load_pbg: 4
pda_inv.o: 372
    nstripe_append_3digits: 66
    inv_give_a_of_item_y: 38
    inv_get_item_y_cap_ropefix: 37
    inv_get_item_y_cap: 29
    inv_init: 26
    cap_satchel0: 24
    cap_satchel1: 24
    cap_satchel2: 24
    cap_satchel3: 24
    cap_satchel4: 24
    cap_satchel5: 24
    pda_inv_same_cursor: 11
    notes_then_pda: 6
    boss_key_tiles: 6
    inv_refill_item_y: 4
    transmissions_then_pda: 3
    inv_give_item_y: 2
seqrings.o: 362
    seqrings_find_closest: 93
    seqrings_check_hitscan: 87
    seqrings_update: 76
    seqrings_check_completion: 29
    seqrings_spin_off: 21
    seqrings_spin_on: 15
    seqrings_init: 9
    seqrings_off_stripe: 7
    seqrings_on_stripe: 7
    seqrings_mapid: 6
    seqrings_x: 6
    seqrings_y: 6
nstripe.o: 353
    nstripe_append_xy: 82
    nstripe_draw_rect: 77
    append_engine: 61
    nstripe_append_rightpad_to_ay: 53
    nstripe_append_xplus1_to_ay: 37
    nstripe_append_128_to_ay: 26
    nstripe_append_src: 7
    nstripe_append_tophi: 4
    nstripe_append: 2
    nstripe_append_yhi: 2
    nstripe_append_64_to_ay: 2
unpb8.o: 333
    load_shared_tiles: 239
    pbdec0_cb: 49
    pbdec_block_cb: 42
    pbdec_block_banky: 3
aoe.o: 328
    aoe_circle_test_x: 181
    aoe_response_actor_x: 49
    aoe_circle_test_actor_offset: 41
    aoe_square_table: 32
    aoe_circle_test: 25
radio.o: 250
    radio_load_obj_tiles: 68
    radio_solve_level_for_transmission: 29
    transmission_then_return: 21
    radio_start_primary_driver_music: 21
    load_area_keyer_target: 16
    is_full_quiet: 13
    show_periscope_w_screen: 11
    fq_achieved_then_radio: 10
    correct_letters: 9
    wrong_letters: 9
    radio_load_c512_pbsrc: 8
    rot_update_radio: 8
    show_radio: 6
    show_keyer: 6
    show_relay_keypad: 6
    radio_load_c512_yxa: 4
    radio_load_c512_pbsrc_banky: 3
    radio_restart_primary_driver: 2
metasprite.o: 216
    find_window_for_sheet: 116
    find_front_prio_closest: 54
    set_obj_windows: 42
    find_window_for_class: 4
sniping.o: 209
    load_half_attr: 76
    sn_dirty_morph: 51
    sniping_main_loaded_level: 32
    sniping_main: 17
    sniping_move_enemies: 11
    sn_draw_sprites: 11
    sn_draw_sprites3: 11
Slack: 196
    __RODATA_slack__: 153
    __RESETCODE_slack__: 36
    __CODE_slack__: 7
pads.o: 192
    read_pads: 135
    autorepeat: 33
    pads_add_snes_ax: 21
    read_pads_ax_to_by: 3
bullets.o: 185
    bullet_dx: 16
    bullet_start_dy: 16
    bullet_moveclk: 16
    bullet_start_xoffset: 16
    bullet_start_yoffset: 16
    bullet_flags: 16
    bullet_sheet: 16
    bullet_frame: 16
    bullets_init: 11
    bulletgroup_start: 10
    bulletgroup_size: 10
    bulletgroup_lifetime: 10
    dynamite_explosion_bullets: 4
    skitter_faint_bullets: 2
    dive_warp_splash_bullets: 2
    scale_bullets: 1
    sono_dot_bullets: 1
    gas_cloud_bullets: 1
    sono2_projectile_r_bullets: 1
    sono2_projectile_l_bullets: 1
    stone_sensor_dash_bullets: 1
    syyth_attack_up_bullets: 1
    syyth_attack_down_bullets: 1
attract.o: 185
    opening_update: 123
    opening_seq: 23
    setup_attract_enemies: 15
    ferris_ending_flash: 8
    setup_attract_pos: 8
    attract_update: 8
mapprocs.o: 163
    partmorph_set_feet: 85
    partmorph_set_rect: 73
    rtl_LEVELLOAD: 5
ft4stub.o: 157
    _Music_Update: 39
    pently_init: 38
    pently_start_music: 25
    Put_Music_Data_In: 21
    _Reset_Music2: 14
    _Reset_Fx: 12
    _Play_Fx: 4
    _Play_Fx_Important: 4
physics.o: 155
    accelBrakeLimit: 155
save.o: 151
    load_save_tiles: 27
    calc_completion: 15
    show_area_name: 11
    show_gameover_screen: 11
    show_full_quiet_screen: 11
    show_loop2_screen: 11
    show_diode_get_screen: 11
    show_hard_mode_screen: 11
    options_load_defaults: 8
    show_save_menu: 6
    show_load_menu: 6
    show_options_menu: 6
    show_stats: 6
    show_present_day_screen: 6
    set_save_menu_bank: 5
barrier.o: 150
    night_creature_present: 106
    night_creature_check: 44
cabinstatus.o: 140
    nstripe_draw_min_sec: 52
    show_cabin_status: 45
    nstripe_draw_time_of_day: 23
    count_tuned_radios: 20
player.o: 132
    init_player: 83
    player_set_need_reload: 20
    gun_next: 10
    gun_previous: 10
    equip_weapon_x: 3
    gun_flags_flashtime: 3
    gun_magazine: 3
pda_main.o: 125
    get_player_elevation_ft_bcd: 29
    get_player_elevation_16px: 24
    pda_start_block: 23
    pda_load_block_present: 19
    pda_reload_invtiles: 16
    pda_main: 8
    pda_load_block: 6
levelsections.o: 109
    area_names: 80
    area_first_map: 10
    area_to_radio: 10
    radio_to_area: 9
ropes.o: 108
    actor_get_piton_info: 24
    init_ropes: 24
    load_level_ropes: 19
    count_unused_ropes: 16
    actor_within_rope: 8
    measure_rope_x_seg_y: 7
    actor_within_piton: 6
    initial_rope_piton: 4
transmissions.o: 108
    show_transmission_a_keys_y: 99
    review_transmissions: 7
    show_transmission: 2
title.o: 99
    show_note_a_keys_y: 42
    wait_y_vblanks: 17
    show_title: 17
    load_note_backing: 14
    review_notes: 7
    show_note: 2
init.o: 92
    reset_handler: 84
    mmc3init_values: 8
campcache.o: 89
    load_camp_cache_chr: 63
    prefused_caches: 10
    show_camp_cache: 8
    show_lab_cache: 8
mmc3.o: 79
    mmc3_switch_vram_page_a_y: 30
    mmc3_banky: 22
    mmc3_restore_A000: 11
    mmc3_restore_bank: 10
    mmc3_rtl: 6
rand.o: 73
    _rand: 58
    _srand: 15
ppuclear.o: 71
    ppu_clear_nt: 34
    ppu_screen_on: 21
    ppu_clear_oam: 16
pda_mapa.o: 59
    pda_clear_map_progress: 55
    preset_switches_end: 4
bcd.o: 53
    bcd8bit: 53
math.o: 46
    mul8: 21
    diva2by1: 21
    divaxbyy: 4
switches.o: 30
    switches_find_xy: 23
    switches_find_actor_x: 7
credits.o: 27
    il_boat_font_helper: 27
warps.o: 23
    set_warp_to_player_pos: 23
fungal_wall.o: 12
    init_draw_fungal_wall: 12
pda_mapb.o: 8
    pda_load_chr_continue: 8
switchactors.o: 6
    mt_gate_indicator_switches: 6
coversprites.o: 6
    init_cover_sprite: 6
puzzle.o: 5
    FamiToneMusicStop: 5