My /opt/retropie/configs/all/retroarch.cfg

retroarch.cfg

core_options_path = /opt/retropie/configs/all/retroarch-core-options.cfg
system_directory = /home/pi/RetroPie/roms/../BIOS
config_save_on_exit = false
video_threaded = true
video_smooth = false
video_aspect_ratio = 1.33
video_shader_dir = /opt/retropie/emulators/RetroArch/shader/
input_autodetect_enable = true
joypad_autoconfig_dir = /opt/retropie/emulators/RetroArch/configs/
input_player1_a = x
input_player1_b = z
input_player1_y = a
input_player1_x = s
input_player1_start = enter
input_player1_select = rshift
input_player1_l = q
input_player1_r = w
input_player1_left = left
input_player1_right = right
input_player1_up = up
input_player1_down = down
input_exit_emulator = escape
input_shader_next = m
input_shader_prev = n
input_rewind = r
input_enable_hotkey = escape
rewind_enable = false
rewind_buffer_size = 10
rewind_granularity = 2
video_gpu_screenshot = true
input_player1_joypad_index = "0"
input_player1_b_btn = "2"
input_player1_y_btn = "3"
input_player1_select_btn = "8"
input_player1_start_btn = "9"
input_player1_up_axis = "-1"
input_player1_down_axis = "+1"
input_player1_left_axis = "-0"
input_player1_right_axis = "+0"
input_player1_a_btn = "1"
input_player1_x_btn = "0"
input_player1_l_btn = "4"
input_player1_r_btn = "5"
input_player2_joypad_index = "1"
input_player2_b_btn = "2"
input_player2_y_btn = "3"
input_player2_select_btn = "8"
input_player2_start_btn = "9"
input_player2_up_axis = "-1"
input_player2_down_axis = "+1"
input_player2_left_axis = "-0"
input_player2_right_axis = "+0"
input_player2_a_btn = "1"
input_player2_x_btn = "0"
input_player2_l_btn = "4"
input_player2_r_btn = "5"
input_enable_hotkey_btn = "8"
input_exit_emulator_btn = "5"