GeezerVison

Check the folder name against the table above, spelled exactly, and that the file type is listed for that console. A console with nothing in its folder is hidden. Games sent over Over The Hare appear when you leave its screen. Games copied any other way while the device is on appear after Rescan Folder in that console's menu, or after a restart. The log names every file a console's folder left out, and the file types it takes.

MENU > Game Settings > Scraping > Box Art fetches every missing cover over Wi-Fi. Sign in to a free ScreenScraper account under MENU > Game Settings > Scraping > ScreenScraper and it asks there first, and brings each game's year, genre and synopsis for its details screen. Without an account, or for a game ScreenScraper doesn't have, it uses libretro's thumbnail collection, looking a game up by its file name and, for zipped games, by checksum.

Some games aren't in either collection, like fan translations and homebrew. Add your own: a PNG named exactly like the game file, in Roms/<console>/.media/. Black Castle.gb wants Black Castle.png. Around 512 pixels on the long side is plenty.

Don't like a cover? Press X on the game and choose Replace Box Art. It looks again, and if nothing turns up, you keep the one you had.

Sign in to your RetroAchievements account under MENU > Game Settings > Achievements Sign-In. The first time you start a game, the device needs Wi-Fi to look it up and download its achievements. After that the game works offline, and anything you unlock offline is kept and sent to your account later. To get every game's achievements in one go before you leave Wi-Fi, use Download Achievement Sets on the same screen; it counts the games with no achievements to earn (hacks, translations, dumps RetroAchievements never listed, and many arcade sets). To play without them, turn off Achievements Enabled on the same screen.

Open Hotkeys in the in-game menu. There are six actions: Fast-Forward and Rewind (both work while held), Quick Save, Quick Load, Screenshot and Turbo Assign (see the next question). A Nintendo DS game adds Screen Layout -> (the next screen layout; MENU + X by default on the GKD and Rotate) and Blow Into Mic (held: the game hears you blow into the microphone). On the GKD it also adds Stylus Tap, the button that touches where the stick's cursor is (R2 by default). On the Brick, Brick Pro and H700 handhelds it adds Screen Layout <- (the previous layout), Stylus Tap (R Stick Click by default on a unit with two sticks) and, on a unit without a second stick, Stylus Mode (a cursor over the bottom screen, moved by the D-pad). With two sticks the cursor is always on, moved by the stick the in-game menu's Stylus Stick row picks, right by default. Pick an action, press A, then press its trigger: a button alone, or held under a modifier. X clears an action, and a lone tap of MENU cancels while it waits. Each console keeps its own bindings, and none are set until you set them. Rewind Speed and Fast-Forward Speed are in MENU > Game Settings.

Modifiers are buttons you hold for a chord, like MENU + X. Each hotkey has its own: hold the modifier when you press the trigger and the screen shows it, so Fast-Forward on L Stick Click + A and Rewind on MENU + A work side by side. The modifiers each device offers:

• Brick, RG SP: Menu or Select.
• Brick Pro, RG34xxSP, RG35XX H: Menu, Select or L Stick Click.
• GKD: Menu, Home, Stick Click or Select.

A tap of MENU still opens the in-game menu when you let go, unless you pressed another button while holding it. Holding MENU on its own for about 0.7 s opens the game switcher.

Triggers:

• L1, R1, L2, R2, A, B, X, Y: with a modifier held, or alone. A button bound alone does the action instead of its job in that console's games.
• D-pad and left stick directions: with a modifier held only, so moving always works.
• The right stick (Brick Pro, RG34xxSP, RG35XX H): its four directions and its click, with a modifier held or alone. Games never see it, so binding it alone costs nothing.
• Nintendo DS: no stick direction is a trigger, since the stylus uses the stick.

One button can hold several actions: one alone and one under each modifier. On a unit with two sticks the left stick's triggers read "L Stick". Bindings saved before each hotkey had its own modifier keep the one that was set then.

Bind Turbo Assign under Hotkeys in the in-game menu, like any other hotkey. Then, in a game:

• Press Turbo Assign, then a button. That button is turbo now: hold it and it presses itself about ten times a second. The press that picks it isn't sent to the game.
• Do the same again to make that button normal again. Several buttons can be turbo at once.
• Press Turbo Assign twice to change your mind before picking a button.
• Hold Turbo Assign for 2 seconds to make every button normal again.

A short notice says what happened each time. A, B, X, Y, L1, R1, L2 and R2 can be turbo; the d-pad, START and SELECT can't. Turbo lasts until you quit the game: the in-game menu and Muse don't touch it, and the next game starts with none. To keep it, turn on Persistent Turbo Assignments in MENU > Game Settings: each game then starts with the turbo buttons you last gave it. A button the console doesn't use, like X on the NES, does nothing as turbo either.

They're under MENU > System Settings. The device has two ways to rest: sleep turns the screen off and pauses a game (music keeps playing), and a tap of POWER brings you straight back. Suspend is a much deeper rest that barely touches the battery.

• Auto Sleep (default 1 minute): how long the device sits untouched before it sleeps, exactly as if you'd tapped POWER.
• Suspend comes 10 seconds after the device falls asleep, however it fell asleep. When music ends with the screen dark, it suspends 30 seconds later. Neither is a setting.
• Auto Off (default Never; not on the RG Rotate): how long the device sits untouched before it powers itself off. Next time you turn it on, you're back where you were. Auto Off and Auto Sleep can't both be on: setting one turns the other to Never.

Auto Sleep and Auto Off only count time on the shelf and in the menus, the in-game menu included, never while you're playing. While music plays, Muse's own Screen Off setting decides when the screen goes dark instead. Plugged in to charge, the device never sleeps, suspends or powers off on its own.

Yes. Put them in pairing mode, open MENU > Bluetooth, press Y to search and A to pair. They reconnect by themselves from then on. Wired headphones always win when they're plugged in.

The device's volume buttons set the headphones' volume, and the headphones' own volume buttons move the device's. On a few headphones, the device's buttons set only the starting volume; after that, change it on the headphones themselves. Play, pause and skip on the headphones control Muse.

On the Brick and Brick Pro, Wi-Fi starts before Bluetooth, at power-on and after sleep. The two share one radio chip, and on the Brick Pro starting them together could freeze the device. So the headphones wait until Wi-Fi has connected, or has given up after 15 seconds, and take around 20 to 30 seconds to come back after sleep. Turn Wi-Fi off under MENU > Network Services when you don't need it, and they reconnect sooner.

Put it in Music/ on the card, from a computer or over Wi-Fi with Over The Hare, a folder per artist and a folder inside that per album: Music/Radiohead/The Bends/01 Planet Telex.mp3. An album folder put straight into Music/ is moved under its artist when its tags name one, and songs in no folder at all are moved into Music/Singles/, an album of their own. MP3, M4A, M4B, AAC, FLAC, Ogg, Opus and WAV all play. Muse appears on the shelf once there's music, and each album's cover comes from its own files, or a picture in the album's folder. MENU > Album Art on Muse's shelf fetches a sharper cover over Wi-Fi from MusicBrainz's Cover Art Archive for any album whose files carry none, or only a small one.

Put each book in its own folder in Audiobooks/, with an author's folder above it or without: Audiobooks/Iain M. Banks/The Hydrogen Sonata/ or Audiobooks/The Hydrogen Sonata/. One M4B or a folder of MP3s both work, and the files play in name order. MENU > Show on Muse's shelf switches between your music and your books. A book remembers where you stopped, even through a power-off, and one played to the end is marked finished; A on it starts it over.

Battery saves are .srm files in Saves/<console>/, named after the game; the console folder is named like its Roms/ folder, and the release comes with one for every console, so saves from another device can go straight in. A game's battery save is written at most once a minute while you play, and always when you open the in-game menu, sleep or quit. If you upgraded a Brick from plorpOS v1.1 or TortOS, move the old saves loose in Saves/ into those folders - see Upgrading a TortOS card. Save states, the autosave included, are in .userdata/shared/.tortos/, one folder per console. Neo Geo Pocket Color games write no .srm, so their progress lives in the autosave.

Open MENU > Network Services > Over The Hare, open its address in a browser, and click Download logs at the bottom of the first page. You get one .tar.gz file holding the last ten boots' logs and a short summary of the device, ready to send to whoever is helping you. Wi-Fi network, headset and account names are masked in it, and the logs on the card are left as they are. The logs themselves are in .userdata/tg3040/logs/ (Brick), .userdata/gkd/logs/ (GKD) or .userdata/rgsp/logs/ (RG SP) on the card.