Sm64config.txt May 2026

Unlike a JSON or XML file, sm64config.txt is a plain text list of arguments. Each line is a separate flag. Lines starting with # are ignored (comments).

Here is a typical default configuration:

# SM64 Config File
--windowed
--resolution 1280 720
--framerate 30
--no-audio
# --skip-intro
# --enable-texture-dumping

Let’s break down the essential parameters. sm64config.txt

The decompilation codebase (written in C) loads this file during engine initialization. Typical loading routine:

Example pseudo-C from sm64ex:

struct Config 
    int window_width;
    int window_height;
    int fullscreen;
    int vsync;
    int framerate_limit;
    // ... etc.
 gConfig;
void config_load(void) 
FILE* file = fopen("sm64config.txt", "r");
if (!file) return;
char line[256];
while (fgets(line, sizeof(line), file)) 
char key[64], val[64];
if (sscanf(line, "%63s = %63s", key, val) == 2) 
if (strcmp(key, "window_width") == 0)
gConfig.window_width = atoi(val);
// ... etc.
fclose(file);

audio_enabled = 1 master_volume = 100 music_volume = 80 sfx_volume = 80

Example (representative):

# Graphics
fullscreen = 1
resolution_width = 1920
resolution_height = 1080
vsync = 0
bilinear_filter = 1
# Audio
volume_music = 0.8
volume_sfx = 0.9
# Controller
controller_type = xinput
deadzone = 0.15
invert_y = 0
# Cheats / gameplay
start_with_120_stars = 0
enable_debug_mode = 0

| Argument | Syntax | Effect | | :--- | :--- | :--- | | --dsu | --dsu IP PORT | Enables DSU Client controller (for Motion control/gyro on PC). | | --deadzone | --deadzone 0.0-1.0 | Stick deadzone. Default 0.3. Lower to 0.1 for pro controllers. | | --input | --input N | Override controller mapping index. |