add debugging instructions

README.md

@@ -11,6 +11,7 @@ Falcon](https://www.romhacking.net/hacks/2701/) project.
 ```
 |-- docs - supplemental documentation
 |   |-- attachments - files used in other documentation
+|   |-- debugging - files used to help debugging
 |   |-- diagrams - mermaid diagram files documenting program flow
 |   |-- lua_scripts - lua scripts for mesen and fceux
 |   |-- sprite_library - extracted sprites for ease of viewing
@@ -142,6 +143,34 @@ interesting observations.  You can search the code for these annotations.
 * `!(UNUSED)` - unused code or data that is never executed nor read
 * `!(OBS)` - observation or note
 
+# Debugging
+
+One of the biggest advantages of building this rom is that the build scripts
+also build the debugging symbols.  Debugging symbols can be read by emulators
+and be included in the source view while debugging the game.  For example,
+[Mesen](https://github.com/SourMesen/Mesen2) will automatically load the
+debugging symbols as long as the `contra.dbg` file exists in the same folder as
+`contra.nes`.  Below is a screenshot of what debugging looks like with symbols.
+
+![Mesen debugger screenshot](docs/attachments/mesen_debugger_screenshot.png?raw=true)
+
+You can see that the debugging symbols file points to the source code to include
+comments and labels.  If you move or delete the source files, you will lose all
+the debugging information.
+
+## FCEUX NameList
+
+[FCEUX](https://fceux.com/web/home.html) doesn't support reading the debugger
+symbols, but you can load NameList (`.nl`) files.  These files aren't as fully
+featured as the debugging symbols file, but does at least allow you to label
+jump/branch locations.  It doesn't easily support comments on individual lines.
+
+I've included the `.nl` files in `docs/debugging/fceux_namelists`.  These files
+were generated from the `-Ln contra.labels.txt` command line parameter to
+`ld65`.  Then the that file was converted to the `.nl` files with a custom
+script.  I can't promise to keep these up to date as the source labels change,
+but I will try to.
+
 # Project History
 I first became interested in this project after watching the
 [Summoning Salt](https://www.youtube.com/channel/UCtUbO6rBht0daVIOGML3c8w) video

docs/debugging/fceux_namelists/contra.nes.7.nl

@@ -0,0 +1,992 @@
+$EB40#add_10_to_enemy_y_fract_vel#
+$EB88#add_4_to_enemy_y_pos#
+$EB27#add_a_to_enemy_x_pos#
+$EB42#add_a_to_enemy_y_fract_vel#
+$EB1F#add_a_to_enemy_y_pos#
+$EB8A#add_a_with_vert_scroll_to_enemy_y_pos#
+$EC35#add_a_y_to_enemy_pos_get_bg_collision#
+$E8A7#add_scroll_to_enemy_pos#
+$EB32#add_with_enemy_pos#
+$EC33#add_y_to_y_pos_get_bg_collision#
+$E78E#advance_enemy_routine#
+$C892#advance_graphic_read_addr#
+$F29E#aim_and_create_enemy_bullet#
+$F420#aim_var_1_for_quadrant_aim_dir_00#
+$F41A#aim_var_1_for_quadrant_aim_dir_01#
+$E740#boss_defeated_routine#
+$F2BE#bullet_generation#
+$EC27#check_enemy_collision_solid_bg#
+$EDF8#clear_enemy_custom_vars#
+$EDF1#clear_sprite_clear_enemy_pt_3#
+$EA23#clear_supertile_bg_collision#
+$F2BF#create_enemy_bullet_angle_a#
+$EAB7#create_enemy_for_explosion#
+$EAAB#create_explosion_89#
+$EAB3#create_two_explosion_89#
+$C315#decrement_delay_timer#
+$E9E5#destroy_all_enemies#
+$EB03#disable_bullet_enemy_collision#
+$EB07#disable_enemy_collision#
+$F4CD#dragon_arm_orb_seek_should_move#
+$EBB5#draw_enemy_supertile_a#
+$EBAA#draw_enemy_supertile_a_set_delay#
+$EB12#enable_bullet_enemy_collision#
+$EB16#enable_enemy_collision#
+$EB0E#enable_enemy_player_collision_check#
+$E7B0#enemy_routine_explosion#
+$E74B#enemy_routine_init_explosion#
+$E806#enemy_routine_remove_enemy#
+$EDD9#find_bullet_slot#
+$ED4E#find_far_segment_for_a#
+$ED4C#find_far_segment_for_x_pos#
+$EDCE#find_next_enemy_slot#
+$EDCA#find_next_enemy_slot_6_to_0#
+$EB52#generate_enemy_a#
+$EB57#generate_enemy_at_pos#
+$E0BB#get_bg_collision#
+$E087#get_bg_collision_far#
+$E0C3#get_cart_bg_collision#
+$F52C#get_quadrant_aim_dir_for_player#
+$F44D#get_rotate_00#
+$F451#get_rotate_01#
+$F466#get_rotate_dir#
+$C183#init_APU_channels#
+$C2FA#init_game_routine_reset_timer_low_byte#
+$EC31#init_vars_get_enemy_bg_collision#
+$EE47#initialize_enemy#
+$EAEA#level_boss_defeated#
+$C204#load_A_offset_graphic_data#
+$D064#load_alternate_graphics#
+$C193#load_bank_3_update_nametable_supertile#
+$C1A6#load_bank_3_update_nametable_tiles#
+$D105#load_palette_indexes#
+$D081#load_palettes_color_to_cpu#
+$E752#mortar_shot_routine_03#
+$C16B#play_sound#
+$ECF5#player_enemy_x_dist#
+$ECC7#red_turret_find_target_player#
+$EA16#remove_all_enemies#
+$E809#remove_enemy#
+$C328#reset_delay_timer#
+$E91E#reverse_enemy_x_direction#
+$E7A4#roller_routine_04#
+$C857#run_routine_from_tbl_below#
+$EB2F#set_08_09_to_enemy_pos#
+$CF27#set_a_as_current_level_routine#
+$E3CD#set_bullet_routine_to_2#
+$F313#set_bullet_velocities#
+$EAF6#set_delay_remove_enemy#
+$E974#set_destroyed_enemy_routine#
+$E78B#set_enemy_delay_adv_routine#
+$ED66#set_enemy_falling_arc_pos#
+$E81A#set_enemy_routine_to_a#
+$E8CD#set_enemy_velocity_to_0#
+$E8D9#set_enemy_x_velocity_to_0#
+$E851#set_enemy_y_vel_rem_off_screen#
+$E8D0#set_enemy_y_velocity_to_0#
+$EC6F#set_flying_capsule_x_vel#
+$EC4B#set_flying_capsule_y_vel#
+$CF1B#set_graphics_zero_mode#
+$E85B#set_outdoor_weapon_item_vel#
+$EA25#set_supertile_bg_collision#
+$EA26#set_supertile_bg_collisions#
+$D8D5#set_vel_for_speed_vars#
+$ED9D#set_weapon_item_indoor_velocity#
+$E7AA#shared_enemy_routine_03#
+$E814#shared_enemy_routine_clear_sprite#
+$EBCE#update_2_enemy_supertiles#
+$EC0A#update_enemy_nametable_tiles#
+$EC08#update_enemy_nametable_tiles_no_palette#
+$E837#update_enemy_pos#
+$E842#update_enemy_x_pos_rem_off_screen#
+$EBA4#update_nametable_tiles_set_delay#
+$E737#wall_core_routine_05#
+$C9A1#zero_out_nametables#
+$FFF6#nes_footer_maker_code#
+$FFF5#nes_footer_mirroring#
+$FFF4#nes_footer_size#
+$FFF2#nes_footer_chr_checksum#
+$FFF0#nes_footer_checksum#
+$FFE0#nes_footer_rom_name#
+$FFD8#konami_catalog_number#
+$FF11#unknown_01#
+$FCC0#dpcm_sample_01#
+$FC51#unknown_00#
+$FC00#dpcm_sample_00#
+$F612#bank_7_unused_space#
+$F5F2#quadrant_aim_dir_02#
+$F5D2#quadrant_aim_dir_01#
+$F5B2#quadrant_aim_dir_00#
+$F5A9#@set_and_exit#
+$F5AC#quadrant_aim_dir_lookup_tbl#
+$F580#@continue#
+$F56C#@shift_get_x_diff#
+$F557#@get_x_pos#
+$F54D#@get_y_pos#
+$F527#@exit#
+$F51B#@loop#
+$F525#@clear_zero_exit#
+$F51F#@continue#
+$F528#@set_negative_exit#
+$F508#@b3#
+$F4F6#@player_below_enemy#
+$F4E9#@check_player_vert_pos#
+$F4C8#@exit#
+$F4BC#@rotate_clockwise#
+$F4C6#@rotate_counterclockwise#
+$F4C0#@wrapped_rotation_check_dir#
+$F4C9#@no_dir_change#
+$F4A9#@determine_rotation#
+$F495#@continue2#
+$F497#@calc_reflected_dir#
+$F486#@check_player_pos#
+$F475#@continue#
+$F463#@get_quadrant_aim_dir#
+$F453#get_rotate_dir_for_index#
+$F43F#@set_var_1_continue#
+$F442#@continue#
+$F435#@rotate_1_counterclockwise#
+$F44B#@set_carry_exit#
+$F423#rotate_enemy_var_1#
+$F3F8#bullet_dir_half_a_add_to_vel#
+$F3D9#bullet_velocity_adjust_add_a#
+$F415#bullet_velocity_adjust_08#
+$F3FF#bullet_velocity_adjust_07#
+$F3F0#bullet_velocity_adjust_06#
+$F3E5#bullet_velocity_adjust_05#
+$F3D3#bullet_velocity_adjust_04#
+$F3CA#bullet_velocity_adjust_03#
+$F3E4#bullet_velocity_adjust_02#
+$F3C3#bullet_velocity_adjust_01#
+$F3BE#bullet_velocity_adjust_00#
+$F3AC#bullet_velocity_adjust_ptr_tbl#
+$F37E#@exit#
+$F36B#@set_x_vel#
+$F3A5#adjust_bullet_velocity#
+$F397#bullet_fract_vel_tbl#
+$F37F#bullet_fract_vel_dir_lookup_tbl#
+$F334#calc_bullet_velocities#
+$F303#@continue#
+$F32F#bullet_gen_exit#
+$F2E4#create_enemy_bullet#
+$F2D6#@set_dir_create_bullet#
+$F2D1#@continue#
+$F2D8#create_enemy_bullet_if_attack_enabled#
+$F2B7#@create_bullet_if_appropriate#
+$F55E#get_quadrant_aim_dir#
+$F2B4#@continue#
+$F299#@advance_enemy_routine#
+$F277#@generate_mortar_shot#
+$F24E#@mortar_shot_routine_01_exit#
+$F24F#@split_mortar#
+$F214#mortar_shot_adv_routine#
+$F217#mortar_shot_velocity_tbl#
+$F1F9#@set_mortar_velocities#
+$F1DF#@continue#
+$F26E#mortar_shot_routine_02#
+$F237#mortar_shot_routine_01#
+$F1D6#mortar_shot_routine_00#
+$F1B1#@add_scroll_exit#
+$F1B4#@disable_and_dec_enemy_routine#
+$F194#@continue#
+$F176#@activate_scuba_soldier#
+$F175#@exit#
+$F15E#@continue#
+$F183#scuba_soldier_routine_02#
+$F14C#scuba_soldier_routine_01#
+$F147#scuba_soldier_routine_00#
+$F12E#turret_man_adv_routine#
+$F131#turret_man_bullet_routine_01#
+$F11F#turret_man_bullet_routine_00#
+$F0EB#turret_man_exit#
+$F0EC#turret_man_routine_02#
+$F0DB#turret_man_routine_01#
+$F0C9#turret_man_routine_00#
+$F0BA#wall_plating_adv_enemy_routine#
+$F0B1#wall_plating_routine_03#
+$F0B0#wall_plating_routine_02#
+$F08A#wall_plating_routine_01#
+$F085#wall_plating_routine_00#
+$F065#@set_delay_set_routine_01#
+$F05B#wall_cannon_calc_delay_set_routine_01#
+$F05A#wall_cannon_exit_01#
+$F045#wall_cannon_bullet_type_and_angle#
+$F042#wall_cannon_bullet_x_offset#
+$F015#@create_bullet_loop#
+$F02D#@continue#
+$EFED#wall_cannon_set_delays#
+$EFFC#animate_wall_cannon#
+$EFEC#wall_cannon_exit#
+$EFCE#set_anim_delay_adv_enemy_routine#
+$F06D#wall_cannon_routine_04#
+$F048#wall_cannon_routine_03#
+$F007#wall_cannon_routine_02#
+$EFD4#wall_cannon_routine_01#
+$EFC7#wall_cannon_routine_00#
+$EF5B#enemy_prop_07#
+$EF37#enemy_prop_06#
+$EF23#enemy_prop_05#
+$EF07#enemy_prop_04#
+$EEEF#enemy_prop_02#
+$EEAB#enemy_prop_01#
+$EE9F#enemy_prop_00#
+$EE8D#enemy_prop_ptr_tbl#
+$EE63#@continue#
+$EE0A#clear_enemy_pt_2#
+$EE3A#clear_enemy_pt_4#
+$EE19#clear_enemy_pt_3#
+$EDFC#clear_enemy#
+$EDEA#@clear_next_enemy#
+$EDE8#bank_7_unused_label_07#
+$EDDB#@loop#
+$EDD8#find_enemy_routine_slot_exit#
+$EDD0#find_next_enemy_slot_x_to_0#
+$EDBC#weapon_item_indoor_vel_tbl#
+$ED9A#@remove_enemy#
+$ED5A#@use_code_0#
+$ED5D#@exit#
+$ED5F#far_segment_code_tbl#
+$ED50#@loop#
+$ED4B#@exit#
+$ED40#@set_closest#
+$ED36#@continue_p1#
+$ED2A#@continue#
+$ED1B#@continue_to_p2#
+$ED24#lda_closer_distance#
+$ED02#@continue_to_p2#
+$ECF2#@exit#
+$ECE4#@continue#
+$ED0E#player_enemy_y_dist#
+$ECA7#@loop#
+$ECB0#@loop2#
+$ECB9#@set_vars_exit#
+$EC91#bank_7_unused_label_06#
+$EC6D#bank_7_unused_label_05#
+$EC93#set_flying_capsule_path#
+$EC49#bank_7_unused_label_04#
+$EC46#@exit#
+$EC05#@set_slot_exit#
+$EBE4#@continue#
+$EC07#@exit#
+$EC23#nametable_update_exit#
+$EBB7#draw_enemy_supertile_10#
+$EBB4#@exit#
+$EBAD#update_nametable_set_anim_delay_exit#
+$EB83#@exit#
+$EB18#enemy_state_width_and_a#
+$EB1B#set_enemy_state_width_to_a#
+$EB09#enemy_state_width_or_a#
+$EAE7#@exit#
+$EAB9#create_explosion_a#
+$EABD#create_explosion_sequence#
+$EAA2#@check_next_loop#
+$EA88#@set_collision#
+$EA7E#@find_bit_offset#
+$EA7C#@continue#
+$EAA7#bg_collision_bit_mask_tbl#
+$EA6C#@set_quadrant_bg_collision#
+$EA64#@set_half_supertile_bg_collisions#
+$EA49#@loop#
+$EA1A#@loop#
+$EA10#@continue#
+$E9E9#@enemy_loop#
+$E9D9#enemy_destroyed_routine_06#
+$E9D4#enemy_destroyed_routine_05#
+$E9D1#enemy_destroyed_routine_04#
+$E9CD#enemy_destroyed_routine_03#
+$E9CA#enemy_destroyed_routine_02#
+$E9C1#enemy_destroyed_routine_01#
+$E9BF#enemy_destroyed_routine_00#
+$E9A2#@exit#
+$E998#@set_routine#
+$E9AD#enemy_destroyed_routine_ptr_tbl#
+$E981#@set_destroyed_routine#
+$E9A3#score_codes_tbl#
+$E96A#@continue#
+$E95E#@add_y_code_to_player_score#
+$E930#bank_7_unused_label_03#
+$E8C7#bank_7_unused_label_02#
+$E8B9#add_horizontal_scroll#
+$E886#@set_y_vel_enemy_frame#
+$E8B8#scroll_enemy_pos_exit#
+$E880#remove_enemy_far#
+$E883#set_weapon_item_y_vel_enemy_frame#
+$E86F#@set_weapon_item_velocity#
+$E8EC#update_enemy_y_pos#
+$E900#update_enemy_x_pos_with_scroll#
+$E849#apply_vel_exit#
+$E90A#update_enemy_x_pos#
+$E858#jmp_remove_enemy#
+$E8E2#update_enemy_y_pos_with_scroll#
+$E84A#update_enemy_x_pos_rem_if_off_screen#
+$E835#explosion_type_03#
+$E832#explosion_type_02#
+$E82E#explosion_type_01#
+$E82B#explosion_type_00#
+$E823#explosion_type_ptr_tbl#
+$E7F0#@continue2#
+$E7DF#@continue#
+$E805#enemy_routine_explosion_exit#
+$E7BA#@continue#
+$E7BC#show_explosion_a#
+$E797#bank_7_unused_label_01#
+$E80E#set_sprite_0#
+$E77C#@continue#
+$E76A#@skip_explosion_sound#
+$E75E#explosion_sound_hide_enemy#
+$E736#enemy_routine_do_nothing_00#
+$F119#turret_man_bullet_routine_ptr_tbl#
+$F0BD#turret_man_routine_ptr_tbl#
+$F13B#scuba_soldier_routine_ptr_tbl#
+$F1C4#mortar_shot_routine_ptr_tbl#
+$F077#wall_plating_routine_ptr_tbl#
+$E734#enemy_routine_do_nothing_ptr_tbl#
+$EFB7#wall_cannon_routine_ptr_tbl#
+$E726#enemy_routine_level_8#
+$E714#enemy_routine_level_7#
+$E70A#enemy_routine_level_6#
+$E6FC#enemy_routine_level_5#
+$E6F0#enemy_routine_level_3#
+$E6CE#enemy_routine_level_2_4#
+$E6C8#enemy_routine_level_1#
+$E698#level_enemy_routine_ptr_tbl#
+$E66B#exe_enemy_routine_subroutine#
+$E6A8#enemy_routine_ptr_tbl#
+$E67B#exec_level_enemy_routine#
+$E64D#@continue#
+$E644#@handle_outdoor#
+$E659#exe_enemy_routine#
+$E655#advance_enemy#
+$E626#exe_enemy_routine_loop#
+$E5E2#collision_box_codes_04#
+$E5A6#collision_box_codes_03#
+$E56A#collision_box_codes_02#
+$E52E#collision_box_codes_01#
+$E4F2#collision_box_codes_00#
+$E4C3#@exit#
+$E4B6#@replace_placeholder#
+$E4D8#collision_code_f_adj_tbl#
+$E4C4#collision_code_f_base_tbl#
+$E459#@continue#
+$E44B#@collision_code_f#
+$E4E8#collision_box_codes_tbl#
+$E40C#bullet_hit_sound_tbl#
+$E3FA#@play_collision_sound#
+$E3ED#@continue#
+$E40B#@exit#
+$E3BB#@continue_2#
+$E3C7#@set_routine_exit#
+$E3D8#bullet_collision_logic#
+$E39F#@continue#
+$E390#@bullet_enemy_collision#
+$E371#@bullet_delay#
+$E378#@test_collision#
+$E38A#@next_bullet#
+$E355#@loop#
+$E345#bullet_enemy_collision_test#
+$E339#@set_player_weapon#
+$E320#@continue#
+$E316#@set_invincibility_timer#
+$E32D#@compare_and_set_weapon#
+$E325#@set_rapid_flag#
+$E942#add_enemy_score_set_enemy_routine#
+$E2EB#@exit_01#
+$E340#remove_current_enemy#
+$E2D6#@invincible_collision#
+$E2EC#pick_up_weapon_item#
+$E2BC#@collide_with_enemy#
+$E2AE#@check_can_land_on#
+$E28E#@set_landing_pos#
+$E265#@land_on_enemy#
+$E262#@exit_00#
+$E29F#@inside_enemy_collision_box#
+$E411#set_enemy_collision_box#
+$E245#@check_if_enemy_collision#
+$E238#@set_collision_code_offset#
+$E217#@set_state_width#
+$E212#@set_collision_box_code#
+$E21C#@check_player_jumping#
+$E22A#@check_in_water_crouched#
+$E1F7#@handle_outdoor_level#
+$E25C#@next_player#
+$E1DB#@check_player_x_collision#
+$E1D9#check_players_collision#
+$E1C9#@supertile_index_loop#
+$E1B1#@repeat_level_data_byte#
+$E1BB#@set_nametable_supertile_indexes#
+$E1A3#@exit#
+$E19B#@vertical_level_section_end#
+$E18C#load_supertile_indexes_starting_at_y#
+$E1A6#load_rle_repeat_command#
+$E181#read_supertiles_screen_ptr_table#
+$E159#auto_scroll_timer_tbl#
+$E157#scroll_trigger_tbl#
+$E154#@exit_mark_scroll_enabled#
+$E156#@exit#
+$E132#collision_code_lookup_tbl#
+$E124#@no_shift#
+$E122#@shift_2_bits#
+$E120#@shift_4_bits#
+$E11E#@shift_6_bits#
+$E12A#@set_code_exit#
+$E130#level_screen_mem_offset_tbl_01#
+$E0E6#@bg_collision_data#
+$E0D3#@continue#
+$E0D1#@vert_overflow#
+$E0C5#bg_collision_logic#
+$E0BD#get_enemy_bg_collision#
+$E105#read_bg_collision_byte#
+$E0AD#@exit#
+$E08A#floor_get_next_row_bg_collision#
+$E077#vert_lvl_tile_collision_exit#
+$E05C#set_collision_tile_col_4#
+$E04B#set_collision_tile_col_3#
+$E065#set_collision_tile#
+$E038#set_collision_tile_col_2#
+$E020#set_collision_code_03#
+$E018#collision_code_2_check#
+$E022#collision_continue#
+$E010#collision_code_0_check#
+$E014#set_collision_code_0#
+$E074#tile_collision_exit#
+$DFD1#@write_supertile_palette_to_cpu#
+$DFE0#@merge_supertiles_across_nametable#
+$DFC0#@set_supertile_attribute_byte#
+$DF93#@exit#
+$DF69#@set_supertile_attribute_byte#
+$DEFE#@set_supertile_tiles#
+$DFFF#set_tile_collision#
+$DE66#load_level_supertile_data#
+$DE55#@odd_nametable_column#
+$DE04#@continue#
+$DE0D#@swap_base_nametable#
+$E16B#load_supertiles_screen_indexes#
+$DDAA#@load_screen_a_supertile_indexes#
+$DE14#level_2_4_boss_graphics_data#
+$DD93#@loop#
+$DDA3#@load_supertiles_screen_indexes_indoor#
+$DDBF#@exit#
+$DDAD#@write_column_tiles_exit#
+$DDC3#@indoor_screen_transition#
+$DDC0#@animate_indoor_fence#
+$DD4C#@continue_loop#
+$DD40#@dec_scroll_continue#
+$DD51#@write_attribute_continue#
+$DD11#@continue#
+$DCF0#@frame_scroll_loop#
+$DD50#@exit#
+$DCEA#@init_loop#
+$E15B#load_next_next_supertiles_screen_indexes#
+$DCC3#@inc_scroll_exit#
+$DCCA#@check_attr_update#
+$DC8B#@change_screen#
+$DC95#@inc_nametable_data#
+$DC78#@set_scroll_graphics_data#
+$DCC9#@exit#
+$DC6F#@include_tank_auto_scroll#
+$DC6B#@set_scroll_frame#
+$DC61#@check_scroll_timer_00#
+$DD5F#handle_indoor_scroll#
+$DC59#@handle_outdoor_level#
+$DCD8#handle_vertical_scroll#
+$DC52#@handle_horizontal_level#
+$DF96#write_row_attribute_to_cpu_memory#
+$DEBE#set_vert_lvl_super_tiles#
+$E162#load_next_supertiles_screen_indexes#
+$DC17#@set_a_exit#
+$DC19#@exit#
+$DF48#write_col_attribute_to_cpu_memory#
+$DE1A#load_column_of_tiles_to_cpu_buffer#
+$DC3E#@indoor_level#
+$DC1A#@vertical_level#
+$E169#load_current_supertiles_screen_indexes#
+$DBA7#config_horizontal_scrolling#
+$DBDB#continue_init_level#
+$DBC4#config_vertical_scrolling#
+$E0AF#find_floor_collision#
+$DB9B#@clear_carry_exit#
+$DB7A#@loop#
+$DB99#@set_carry_exit#
+$DB5F#@find_bg_collision#
+$DB5A#@player_bg_collision#
+$DB4C#@continue_3#
+$DB4A#@continue_2#
+$DB38#@continue#
+$E0B5#read_bg_collision_byte_unsafe#
+$DACE#can_player_drop_down_exit#
+$DAB0#@loop#
+$DACF#set_carry_exit#
+$DACD#collision_below_player#
+$DA9B#@continue#
+$DA8F#@exit#
+$E136#set_boss_auto_scroll#
+$DA58#@stop_player_x_velocity#
+$DA3A#@set_horizontal_level_frame_scroll#
+$DA60#horizontal_scroll_point_tbl#
+$DA63#set_vertical_level_frame_scroll#
+$DA5E#@exit#
+$DA06#@set_game_over#
+$D9D4#@continue#
+$D9C7#@exit#
+$D9BE#@indoor_continue#
+$D9C5#@exit_code_0#
+$D9B8#@indoor_floor#
+$D9BC#@indoor_boss_level#
+$D99B#init_PLAYER_WATER_STATE#
+$D9A0#jmp_walk_off_ledge#
+$D99A#@exit#
+$D996#@clear_edge_code_exit#
+$D93A#d_pad_player_aim_tbl#
+$D92A#@set_player_aim#
+$D91A#@continue#
+$D90B#@set_sprite_y#
+$D90F#landing_y_position_tbl#
+$D8E1#@negate_bullet_velocities#
+$D8C1#@continue#
+$D8CD#set_vel_for_speed_code_a#
+$D886#@continue#
+$D87A#@check_aim_dir#
+$D866#indoor_transition_exit#
+$D83E#@exit#
+$D82E#@continue#
+$D829#@test_left_d_pad#
+$D82F#x_velocity_exit#
+$D81A#@continue#
+$D812#@set_x_velocity#
+$D9CB#player_jumping_set_y_pos#
+$D800#@set_y_pos#
+$D9EC#apply_gravity#
+$D803#@set_jump_status_from_input#
+$D7F4#@apply_gravity#
+$D7CD#@check_collision#
+$D7DB#@check_collision_above#
+$D814#set_x_velocity_from_a_code#
+$D820#get_x_velocity_d_pad_code#
+$D7AA#@set_x_velocity#
+$D867#player_land_on_ground#
+$D791#@off_ledge_start#
+$D77E#@exit#
+$D772#@exit#
+$D770#@continue#
+$D762#set_player_x_vel_to_a#
+$D89B#set_player_advancing_vel#
+$D750#@check_next_player#
+$D739#@check_player_x_advancing#
+$D756#set_player_standing_sprite_sequence#
+$D737#@check_players_advancing#
+$D723#@indoor_screen_cleared#
+$D70B#set_sprite_sequence_to_a#
+$D70E#d_pad_up_pressed#
+$D70A#set_sprite_sequence_to_y#
+$D760#set_player_negative_x_velocity#
+$D75C#set_player_positive_x_velocity#
+$D6F2#@set_y_velocity#
+$D6DD#@continue#
+$D6D0#@continue#
+$D6BA#walk_off_ledge#
+$D6C4#set_edge_fall_code#
+$D6D2#player_sprite_animation_exit#
+$DA91#can_player_drop_down#
+$D6F8#handle_d_pad#
+$D83F#indoor_transition_set_pos#
+$D69B#@handle_player_input#
+$D7AF#handle_jump#
+$D694#@indoor_transition_anim_check#
+$D77F#set_x_velocity_for_edge_fall_code#
+$D68D#@player_jump_check#
+$D830#update_indoor_electrocution#
+$D686#@player_edge_fall_check#
+$D6D3#set_jump_status_and_y_velocity#
+$D858#indoor_transition_end#
+$D67F#@player_electrocution_check#
+$D655#@apply_vel_to_player_x_pos#
+$DA0B#set_frame_scroll_if_appropriate#
+$D637#@lvl_boss_max_x_scroll_tbl#
+$D665#level_right_edge_x_pos_tbl#
+$DB28#check_player_solid_bg_collision#
+$D631#@set_scroll_apply_x_vel#
+$D63F#@player_negative_x_vel#
+$D664#@exit#
+$D66B#handle_player_state#
+$D5F8#@continue#
+$D5FB#calc_player_x_vel#
+$D9C8#apply_gravity_set_y_pos#
+$D8EF#set_player_landing_y_offset#
+$D5DB#@set_animation_timer#
+$D5DF#@set_pos_and_sprite#
+$D5C1#@continue#
+$D5EB#player_died_x_velocity_tbl#
+$D9FA#init_player_dec_num_lives#
+$D5E5#@set_player_sprite_exit#
+$D5A9#@animation_timer_elapsed#
+$D5E8#player_sprite_sequence_tbl#
+$D773#sty_level_screen_type#
+$D668#level_left_edge_x_pos_tbl#
+$D58F#@inc_y_pos_exit#
+$D592#@exit#
+$D577#auto_scroll_player#
+$D5EE#handle_player_state_calc_x_vel#
+$D97A#check_player_ledge#
+$D912#set_player_aim_for_input#
+$D888#init_player_data#
+$D54A#kill_player#
+$D549#@exit#
+$D56B#player_state_routine_01_logic#
+$DAA1#check_collision_below#
+$D523#@exit#
+$D9A3#get_player_bg_collision_code#
+$D500#@set_x_pos#
+$D4EB#@find_landing#
+$D514#@check_if_floor_exit#
+$D505#@set_frame_invincible_timer_exit#
+$D52C#horizontal_spawn_position#
+$D524#vertical_spawn_position#
+$DAD5#init_player_attributes#
+$D593#player_state_routine_02#
+$D534#player_state_routine_01#
+$D4C3#player_state_routine_00#
+$D4B3#player_state_routine#
+$D4AC#@continue#
+$D4BB#level_spawn_position_index#
+$D49A#@exit#
+$D49B#weapon_strength#
+$D488#set_player_weapon_strength#
+$D482#@continue#
+$D476#decrement_invincibility_effect#
+$D46C#set_enemies_to_attack#
+$D4A0#run_player_state_routine#
+$D45F#@exit#
+$D43C#@exit#
+$D454#find_scrolled_player#
+$D43D#@vertical_scroll_player#
+$D453#@exit2#
+$DAD1#init_player_and_weapon#
+$D421#@revive_player#
+$D415#@subtract_life#
+$D3FB#@check_transfer_life#
+$D3F2#@player_loop#
+$D42B#@exit#
+$D42C#scroll_player#
+$D460#handle_invincibility_and_weapon_strength#
+$D3E6#player_state_routine_03#
+$D3CC#run_player_invincibility_and_weapon_strength#
+$D3C6#@p2_game_over_status#
+$D38D#@player_bullet_loop#
+$D388#@run_player_bullet_routines#
+$D37C#@continue#
+$D3B4#set_frame_scroll_weapon_strength#
+$D227#game_palettes#
+$D19A#ending_palette_2_index#
+$D18A#indoor_boss_palette_2_index#
+$D192#falcon_weapon_flash_tbl#
+$D143#set_a_to_palette_2#
+$D196#level_palette_2_index#
+$D17C#set_ending_palette_animation#
+$D145#load_10_sprite_palettes#
+$D140#load_palettes_color_to_cpu_2_index#
+$D16C#set_indoor_boss_palette_2_animation#
+$D126#@continue#
+$D181#lvl_palette_animation_count#
+$D14A#falcon_weapon_flash#
+$D16B#palette_mod_exit#
+$D0FD#palette_shift_amount_tbl#
+$D0F9#@write_black_to_cpu_mem#
+$D0DC#@continue#
+$D0CF#@exit#
+$D0B8#write_palette_color_a_to_cpu_mem#
+$D0B6#read_palette_color#
+$D0D0#shift_bg_palette_color#
+$D0B2#read_palette_loop#
+$D225#game_palette_ptr_tbl#
+$D08F#load_palette_colors_to_cpu#
+$D19E#lvl_alt_collision_and_palette_tbl#
+$D074#@loop#
+$D38B#draw_player_bullet_sprites#
+$D053#@game_paused#
+$D063#pause_exit#
+$D00E#@next_player_adv_lvl_index#
+$D003#@player_loop#
+$CFFF#@continue#
+$D01E#level_routine_exit#
+$CFC7#@set_cursor_sprite_and_scores#
+$CFDC#reset_game_routine#
+$CFBB#@check_select_button#
+$CF95#@no_continues_remaining#
+$CF9A#@set_demo_end_exit#
+$CF65#level_routine_05_exit#
+$CF60#load_level_intro#
+$CF6E#show_game_over_screen#
+$CF12#set_to_level_routine_05#
+$CEF7#run_level_enemy_logic#
+$CF0A#init_game_over#
+$D371#set_frame_scroll_draw_player_bullets#
+$CEEE#check_game_over_run_enemy_logic#
+$CF25#set_to_level_routine_08#
+$CF09#level_routine_04_exit#
+$D038#check_for_pause#
+$CEC4#level_routine_03_exit#
+$CEBE#@continue#
+$CEC8#level_vert_scroll_and_song#
+$CEC5#draw_the_scores_1#
+$CE95#@continue#
+$CE97#skip_level_routine_01#
+$CE7B#inc_level_routine_index#
+$DB9D#init_ppu_write_screen_supertiles#
+$CE6A#load_level_header#
+$D02E#level_routine_0a#
+$D01F#level_routine_09#
+$CFEA#level_routine_08#
+$CFE1#level_routine_07#
+$CF9D#level_routine_06#
+$CF2E#level_routine_05#
+$CEE3#level_routine_04#
+$CED8#level_routine_03#
+$CE9B#level_routine_02#
+$CE7E#level_routine_01#
+$CE4B#level_routine_00#
+$CE35#level_routine_ptr_tbl#
+$CE32#run_level_routine#
+$CDBF#pattern_tile_bg_00#
+$CDFF#pattern_tile_fence_tbl#
+$CDA3#@write_to_graphics_buffer#
+$CDBD#pattern_tile_bg_tbl#
+$CD6F#@continue#
+$CD64#@draw_random_fence#
+$CDBC#@exit#
+$CD54#animate_indoor_fence#
+$CD08#@loop#
+$CD27#alt_graphics_loading_complete#
+$CD2C#alt_graphic_data_ptr_tbl#
+$CCE4#set_alt_graphics_cpu_buffer#
+$CC9D#@loop#
+$CCB7#graphics_loading_exit#
+$CC70#@write_loop#
+$CC60#@set_PPU_write_address#
+$CC47#@write_to_ppu#
+$CC2B#@write_byte_to_ppu#
+$CC29#@write_ff_to_ppu#
+$CC11#@loop#
+$CC2E#@flush_graphics_buffer#
+$CC1C#@reset_graphics_buffer#
+$CBE5#@continue#
+$CBD1#@read_cpu_mem_to_ppu#
+$CC3F#@flush_cpu_graphics_buffer#
+$CBC5#vram_address_increment#
+$CBBF#write_to_700_offset#
+$CB9C#@dec_blank_delay#
+$CB9E#@next_char#
+$CBA5#@handle_fd#
+$CBA1#@write_ff_to_cpu_memory#
+$CBC3#set_x_to_offset_exit#
+$CB7D#@write_char_to_cpu_mem#
+$CBBD#write_a_to_cpu_graphics_buffer#
+$CB4B#blank_nametable_2#
+$CB36#graphic_data_00 blank_nametables#
+$CB2B#@draw_final_0_exit#
+$CB2F#@draw_zero_score#
+$CB1B#@draw_score_end_zeros#
+$CB02#@draw_score_digit#
+$CB2E#@exit#
+$CAF8#@draw_score#
+$CAC1#draw_the_scores#
+$CAAD#draw_stage_and_level_name#
+$CAA5#@exit#
+$CA9A#@write_num_lives#
+$CA8E#@convert_digits#
+$CA7E#@draw_num_lives#
+$CA7C#@continue#
+$CAA6#draw_game_over_tex#
+$CA61#draw_player_num_lives#
+$CA2C#write_a_to_ppu_y_times#
+$CA15#advance_ppu_write_addr#
+$CA10#advance_graphic_read_addr_n_bytes#
+$CA36#horizontal_flip_graphic_byte#
+$CA06#write_repetition_sequence_byte#
+$C9FD#write_next_n_sequence_bytes#
+$CA1D#write_graphic_byte_a_times#
+$CA51#change_ppu_write_address#
+$CA5B#end_graphic_code#
+$C9E8#write_graphic_data_sequences_to_ppu#
+$C9E3#init_graphic_data_index#
+$C9CC#begin_ppu_graphics_block_write#
+$C950#graphic_data_ptr_tbl#
+$C94B#ending_graphic_data#
+$C948#intro_graphic_data_01#
+$C946#intro_graphic_data_00#
+$C940#level_4_boss_graphic_data#
+$C93B#level_2_boss_graphic_data#
+$C936#level_8_graphic_data#
+$C92E#level_7_graphic_data#
+$C926#level_6_graphic_data#
+$C91E#level_5_graphic_data#
+$C90D#level_4_graphic_data#
+$C916#level_3_graphic_data#
+$C905#level_2_graphic_data#
+$C8FD#level_1_graphic_data#
+$C9A3#write_graphic_data_to_ppu#
+$C8D6#@loop#
+$C8E3#level_graphic_data_tbl#
+$C8C3#exit_load_graphics_group#
+$C8A7#@handle_overflow_exit#
+$C89C#@handle_overflow#
+$C89B#@exit#
+$C88A#continue_shift_score#
+$C87E#shift_and_check_digit_carry#
+$C874#calculate_score_digit#
+$C870#bank_7_unused_label_00#
+$C7FD#@continue#
+$C7D3#@nametable#
+$C7D1#@round_up#
+$C7B5#level_screen_mem_offset_tbl_00#
+$C7B3#attribute_base_high_byte#
+$C7B1#nametable_base_high_byte#
+$C77F#write_overwrite_tile_to_cpu_buffer#
+$C76F#prep_overwrite_nametable_tiles#
+$C7B7#palette_mask_tbl#
+$C739#@shift_4#
+$C73B#@shift_2#
+$C73D#@set_supertile_palette#
+$C75C#@update_nametable_tiles#
+$C721#@continue#
+$C79F#level_tile_animation_ptr_tbl#
+$C6F7#update_nametable_tiles_exit#
+$C6CA#@write_update_supertile#
+$C6B8#@mv_down_row#
+$C697#@write_palette_data#
+$C6CD#update_palette_cfg_tbl#
+$C631#@update_palette_02#
+$C67B#@update_palette_continue#
+$C601#@update_palette_01#
+$C5AF#@write_graphic_group_bytes#
+$C5A3#@write_graphic_group#
+$C83C#set_graphics_buffer_header#
+$C5D0#update_supertile_palette#
+$C575#write_update_supertile_to_cpu#
+$C6D3#nametable_update_data_ptr_tbl#
+$C54B#@continue#
+$C7BB#set_ppu_addresses_in_mem#
+$C529#@set_high_score#
+$C535#score_exit#
+$C50C#@set_num_lives#
+$C4FD#@inc_num_lives#
+$C4F3#@continue_inc_num_lives#
+$C4DC#@extra_life_logic#
+$C517#@set_if_new_high_score#
+$C4E5#@set_extra_life_inc_num_lives#
+$C4CD#@set_if_extra_life#
+$C4C1#@continue#
+$C4A8#add_player_score#
+$C4A0#add_player_low_score#
+$C49F#add_player_score_exit#
+$C494#clear_memory_block#
+$C483#@loop#
+$C481#clear_memory_starting_a_x#
+$C469#init_player_num_lives#
+$C461#init_player_lives#
+$C47D#p2_game_over_status_tbl#
+$C47B#player_mode_1d_table#
+$C44B#clear_score_byte#
+$C447#reset_players_score#
+$C431#@continue#
+$C47F#clear_memory_3#
+$C3DB#player_mode_change#
+$C3E7#stop_demo_load_player_select_UI#
+$C3E6#timer_exit#
+$C3A2#read_controller_button#
+$C386#set_player_input#
+$C384#write_input#
+$C375#@continue#
+$C36B#ensure_input_valid#
+$C397#read_controller_state#
+$C345#konami_input_index_correct#
+$C351#konami_code_lookup_table#
+$C350#konami_code_exit#
+$C325#@exit_z_flag_clear#
+$C327#@exit#
+$C307#init_game_routine_flags#
+$C43E#init_score_player_lives#
+$C2DC#@intro_timer_elapsed#
+$C40F#dec_intro_theme_delay#
+$C2FC#set_game_routine_init_flag#
+$C2D3#@continue#
+$C30E#set_game_routine_index_to_a#
+$C300#game_routine_02_exit#
+$CE27#run_level_routine_for_demo#
+$C41C#set_next_demo_level#
+$C2BA#@continue#
+$C305#increment_game_routine#
+$C3F9#load_intro_palette2_play_intro_sound#
+$C2B0#game_routine_01_exit#
+$C282#game_routine_01_scroll_complete#
+$C331#konami_input_check#
+$C272#player_select_cursor_pos#
+$C301#inc_routine_index_set_timer#
+$C8A8#load_intro_graphics#
+$CE30#game_routine_05#
+$C2F4#game_routine_04#
+$C2C7#game_routine_03#
+$C2B1#game_routine_02#
+$C274#game_routine_01#
+$C25B#game_routine_00#
+$C24D#game_routine_pointer_table#
+$C3BC#dec_theme_delay_check_user_input#
+$C248#run_game_routine#
+$C233#load_bank_3_run_end_lvl_sequence_routine#
+$C22B#simulate_input_for_demo#
+$C223#game_routine_06#
+$CB60#write_text_palette_to_mem#
+$C217#load_bank_6_write_text_palette_to_mem#
+$C20F#load_bank_2_set_players_paused_sprite_attr#
+$C207#load_bank_2_set_player_sprite#
+$C8C6#load_level_graphic_data#
+$C8C4#load_current_level_graphic_data#
+$C201#load_level_graphics#
+$CCB8#alternate_tile_loading#
+$C1F9#load_bank_2_alternate_tile_loading#
+$DBE6#init_lvl_nametable_animation#
+$C1F1#load_bank_3_init_lvl_nametable_animation#
+$DC4B#handle_scroll#
+$C1E9#load_bank_3_handle_scroll#
+$C1E1#load_bank_2_exe_soldier_generation#
+$E689#load_level_enemies_to_mem#
+$C1D9#load_bank_0_load_level_enemies_to_mem#
+$C1D1#load_bank_2_load_screen_enemy_data#
+$E61E#exe_all_enemy_routine#
+$C1C9#load_bank_0_exe_all_enemy_routine#
+$C1C1#load_bank_6_check_player_fire#
+$C1B9#load_bank_6_run_player_bullet_routines#
+$C6F8#update_nametable_tiles#
+$C536#update_nametable_supertile#
+$C15E#local_previous_1_bank#
+$C14C#load_bank_1#
+$C146#load_previous_bank#
+$FFD0#prg_rom_banks#
+$C12C#@loop#
+$C104#set_ppu_scroll#
+$C13F#set_rom_bank_to_y#
+$C0D1#@continue#
+$C0BE#@handle_sound#
+$C0B5#irq#
+$C0AF#remove_registers_from_stack_and_rti#
+$CBB9#write_0_to_cpu_graphics_buffer#
+$C23B#exe_game_routine#
+$C35B#load_controller_state#
+$C139#load_bank_number#
+$C0F7#set_ppu_addr_to_nametables#
+$C08A#@continue#
+$CBC9#write_cpu_graphics_buffer_to_ppu#
+$CC81#write_palette_colors_to_ppu#
+$C0B6#handle_sounds_set_ppu_scroll_rti#
+$C060#nmi_start#
+$C057#forever_loop#
+$C0E7#configure_PPU#
+$C0DC#init_APU#
+$C038#@loop#
+$C049#init_APU_and_PPU#
+$C036#init_07f0_through_high_score#
+$C02B#@loop#
+$C126#clear_memory#
+$C117#clear_ppu#
+$C008#vertical_blank_entry#
+$C003#wait_til_vblank#
+$C001#reset_vector#

src/bank7.asm

@@ -4617,7 +4617,7 @@ handle_jump:
 @set_jump_status_from_input:
     jsr get_x_velocity_d_pad_code ; see if left or right d-pad button is pressed
     beq @set_x_velocity           ; branch if neither were pressed
-    sta $08                       ; store #$20 for left d-pad, #$40 for right d-pad in $08
+    sta $08                       ; store #$20 for right d-pad, #$40 for left d-pad in $08
     lda PLAYER_JUMP_STATUS,x      ; low nibble 1 = jumping, 0 not jumping; high nibble = facing direction
     and #$9f                      ; keep bits x..x xxxx
     ora $08                       ; update EDGE_FALL_CODE based on d-pad input