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Set default emulator tabs and update docs
1 parent 0e35394 commit 33923f5

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‎README.md‎

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@@ -84,6 +84,9 @@ https://wiki.ds-homebrew.com/ds-index/rtcom?tab=forwarders
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Per‑ROM RetroArch options (press **Y** on a ROM in emulator tabs) are stored in `sd:/3ds/emulators/rom_options.json`.
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Default enabled emulator tabs are: NES, SNES, GB/GBC, GBA, Genesis, Master System, Game Gear, TG16/PCE, CPS1, CPS2, Neo Geo, Lynx, Virtual Boy, Neo Geo Pocket, WonderSwan.
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Other supported systems can be enabled from Settings -> Emulators.
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## Known Issue
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- NDS cheats are currently work in progress. Cheat selection UI and usrcheat flag writes are implemented, but in-game cheat activation is not yet reliable across all titles.

‎SD/3ds/emulators/emulators.json‎

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{
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"version": 1,
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"systems": {
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"a26": {"displayName":"Atari 2600","enabled":true,"romFolder":"sd:/roms/a26"},
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"a52": {"displayName":"Atari 5200","enabled":true,"romFolder":"sd:/roms/a52"},
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"a78": {"displayName":"Atari 7800","enabled":true,"romFolder":"sd:/roms/a78"},
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"col": {"displayName":"ColecoVision","enabled":true,"romFolder":"sd:/roms/col"},
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"cpc": {"displayName":"Amstrad CPC","enabled":true,"romFolder":"sd:/roms/cpc"},
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"a26": {"displayName":"Atari 2600","enabled":false,"romFolder":"sd:/roms/a26"},
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"a52": {"displayName":"Atari 5200","enabled":false,"romFolder":"sd:/roms/a52"},
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"a78": {"displayName":"Atari 7800","enabled":false,"romFolder":"sd:/roms/a78"},
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"col": {"displayName":"ColecoVision","enabled":false,"romFolder":"sd:/roms/col"},
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"cpc": {"displayName":"Amstrad CPC","enabled":false,"romFolder":"sd:/roms/cpc"},
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"gb": {"displayName":"GB/GBC","enabled":true,"romFolder":"sd:/roms/gb"},
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"gba": {"displayName":"Game Boy Advance","enabled":true,"romFolder":"sd:/roms/gba"},
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"gen": {"displayName":"Genesis","enabled":true,"romFolder":"sd:/roms/gen"},
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"gg": {"displayName":"Game Gear","enabled":true,"romFolder":"sd:/roms/gg"},
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"intv": {"displayName":"Intellivision","enabled":true,"romFolder":"sd:/roms/intv"},
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"m5": {"displayName":"Sord M5","enabled":true,"romFolder":"sd:/roms/m5"},
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"intv": {"displayName":"Intellivision","enabled":false,"romFolder":"sd:/roms/intv"},
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"m5": {"displayName":"Sord M5","enabled":false,"romFolder":"sd:/roms/m5"},
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"nes": {"displayName":"NES","enabled":true,"romFolder":"sd:/roms/nes"},
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"ngp": {"displayName":"Neo Geo Pocket","enabled":true,"romFolder":"sd:/roms/ngp"},
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"pkmni": {"displayName":"PokeMini","enabled":true,"romFolder":"sd:/roms/pkmni"},
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"sg": {"displayName":"SG-1000","enabled":true,"romFolder":"sd:/roms/sg"},
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"pkmni": {"displayName":"PokeMini","enabled":false,"romFolder":"sd:/roms/pkmni"},
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"sg": {"displayName":"SG-1000","enabled":false,"romFolder":"sd:/roms/sg"},
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"sms": {"displayName":"Master System","enabled":true,"romFolder":"sd:/roms/sms"},
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"snes": {"displayName":"SNES","enabled":true,"romFolder":"sd:/roms/snes"},
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"tg16": {"displayName":"TurboGrafx-16","enabled":true,"romFolder":"sd:/roms/tg16"},
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"ws": {"displayName":"WonderSwan","enabled":true,"romFolder":"sd:/roms/ws"},
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"arcade": {"displayName":"Arcade","enabled":true,"romFolder":"sd:/roms/arcade"},
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"arcade": {"displayName":"Arcade","enabled":false,"romFolder":"sd:/roms/arcade"},
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"cps1": {"displayName":"Capcom Play System 1","enabled":true,"romFolder":"sd:/roms/cps1"},
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"cps2": {"displayName":"Capcom Play System 2","enabled":true,"romFolder":"sd:/roms/cps2"},
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"cps3": {"displayName":"Capcom Play System 3","enabled":true,"romFolder":"sd:/roms/cps3"},
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"cps3": {"displayName":"Capcom Play System 3","enabled":false,"romFolder":"sd:/roms/cps3"},
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"neogeo": {"displayName":"Neo Geo","enabled":true,"romFolder":"sd:/roms/neogeo"},
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"neogeocd": {"displayName":"Neo Geo CD","enabled":true,"romFolder":"sd:/roms/neogeocd"},
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"c64": {"displayName":"Commodore 64","enabled":true,"romFolder":"sd:/roms/c64"},
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"c128": {"displayName":"Commodore 128","enabled":true,"romFolder":"sd:/roms/c128"},
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"vic20": {"displayName":"Commodore VIC-20","enabled":true,"romFolder":"sd:/roms/vic20"},
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"plus4": {"displayName":"Commodore Plus/4","enabled":true,"romFolder":"sd:/roms/plus4"},
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"pet": {"displayName":"Commodore PET","enabled":true,"romFolder":"sd:/roms/pet"},
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"psx": {"displayName":"Sony PlayStation 1","enabled":true,"romFolder":"sd:/roms/psx"},
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"neogeocd": {"displayName":"Neo Geo CD","enabled":false,"romFolder":"sd:/roms/neogeocd"},
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"c64": {"displayName":"Commodore 64","enabled":false,"romFolder":"sd:/roms/c64"},
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"c128": {"displayName":"Commodore 128","enabled":false,"romFolder":"sd:/roms/c128"},
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"vic20": {"displayName":"Commodore VIC-20","enabled":false,"romFolder":"sd:/roms/vic20"},
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"plus4": {"displayName":"Commodore Plus/4","enabled":false,"romFolder":"sd:/roms/plus4"},
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"pet": {"displayName":"Commodore PET","enabled":false,"romFolder":"sd:/roms/pet"},
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"psx": {"displayName":"Sony PlayStation 1","enabled":false,"romFolder":"sd:/roms/psx"},
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"vb": {"displayName":"Virtual Boy","enabled":true,"romFolder":"sd:/roms/vb"},
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"lynx": {"displayName":"Atari Lynx","enabled":true,"romFolder":"sd:/roms/lynx"},
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"jaguar": {"displayName":"Atari Jaguar","enabled":true,"romFolder":"sd:/roms/jaguar"},
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"dos": {"displayName":"DOS","enabled":true,"romFolder":"sd:/roms/dos"},
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"pc98": {"displayName":"NEC PC-98","enabled":true,"romFolder":"sd:/roms/pc98"},
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"scummvm": {"displayName":"ScummVM","enabled":true,"romFolder":"sd:/roms/scummvm"},
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"quake": {"displayName":"Quake","enabled":true,"romFolder":"sd:/roms/quake"},
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"uzebox": {"displayName":"Uzebox","enabled":true,"romFolder":"sd:/roms/uzebox"},
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"tic80": {"displayName":"TIC-80","enabled":true,"romFolder":"sd:/roms/tic80"},
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"wasm": {"displayName":"WASM-4","enabled":true,"romFolder":"sd:/roms/wasm"},
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"lowresnx": {"displayName":"LowRes NX","enabled":true,"romFolder":"sd:/roms/lowresnx"}
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"jaguar": {"displayName":"Atari Jaguar","enabled":false,"romFolder":"sd:/roms/jaguar"},
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"dos": {"displayName":"DOS","enabled":false,"romFolder":"sd:/roms/dos"},
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"pc98": {"displayName":"NEC PC-98","enabled":false,"romFolder":"sd:/roms/pc98"},
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"scummvm": {"displayName":"ScummVM","enabled":false,"romFolder":"sd:/roms/scummvm"},
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"quake": {"displayName":"Quake","enabled":false,"romFolder":"sd:/roms/quake"},
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"uzebox": {"displayName":"Uzebox","enabled":false,"romFolder":"sd:/roms/uzebox"},
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"tic80": {"displayName":"TIC-80","enabled":false,"romFolder":"sd:/roms/tic80"},
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"wasm": {"displayName":"WASM-4","enabled":false,"romFolder":"sd:/roms/wasm"},
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"lowresnx": {"displayName":"LowRes NX","enabled":false,"romFolder":"sd:/roms/lowresnx"}
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}
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}

‎docs/RetroArch Emulators.md‎

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@@ -60,6 +60,30 @@ FirmMux maps these folders under `sd:/roms/`:
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- WASM-4 (`wasm`)
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- LowRes NX (`lowresnx`)
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## Default Enabled Systems
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By default, FirmMux enables these tabs:
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- NES
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- SNES
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- Game Boy / Game Boy Color
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- Game Boy Advance
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- Genesis / Mega Drive
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- Master System
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- Game Gear
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- TurboGrafx-16 / PC Engine
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- Capcom Play System 1
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- Capcom Play System 2
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- Neo Geo
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- Atari Lynx
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- Virtual Boy
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- Neo Geo Pocket
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- WonderSwan
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All other supported systems are disabled by default and can be enabled in Settings -> Emulators.
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Note: if `sd:/3ds/emulators/emulators.json` already exists, FirmMux keeps the user's current enabled/disabled choices.
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## Backend Files (auto‑created)
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FirmMux uses:

‎docs/SD Layout.md‎

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## Notes
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- `sd:/3ds/emulators/` is only used for RetroArch handoff/config/log files.
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- `sd:/3ds/emulators/emulators.json` controls which emulator tabs are enabled; existing files are preserved and not overwritten.
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- `sd:/retroarch/` must come from the RetroArch 3DSX release (not CIA). It provides cores and system files.
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- `sd:/_nds/firmmux/nds_widescreen/` stores per-game widescreen `.bin` files.
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- `sd:/_nds/ntr-forwarder/usrcheat.dat` is the cheat database.

‎source/emulators.c‎

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@@ -57,6 +57,32 @@ static const KnownSystem g_known_systems[] = {
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static const int g_known_system_count = (int)(sizeof(g_known_systems) / sizeof(g_known_systems[0]));
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static bool default_enabled_for_key(const char* key) {
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if (!key || !key[0]) return false;
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static const char* enabled_keys[] = {
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"nes",
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"snes",
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"gb",
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"gba",
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"gen",
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"sms",
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"gg",
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"tg16",
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"cps1",
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"cps2",
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"neogeo",
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"lynx",
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"vb",
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"ngp",
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"ws"
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};
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const int count = (int)(sizeof(enabled_keys) / sizeof(enabled_keys[0]));
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for (int i = 0; i < count; i++) {
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if (!strcasecmp(key, enabled_keys[i])) return true;
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}
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return false;
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}
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static void lower_copy(char* out, size_t out_size, const char* in) {
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if (!out || out_size == 0) return;
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out[0] = 0;
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memset(sys, 0, sizeof(*sys));
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lower_copy(sys->key, sizeof(sys->key), key);
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copy_str(sys->display_name, sizeof(sys->display_name), display);
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sys->enabled = true;
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sys->enabled = default_enabled_for_key(key);
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snprintf(sys->rom_folder, sizeof(sys->rom_folder), "sd:/roms/%s", key);
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}
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