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[[File:FunKeyMapping-1.jpg|thumb|rightcenter|150px225px|alt:Image showing the FunKey S buttons.|System buttons]]

[[File:FunKeyMapping-2.jpg|thumb|rightcenter|150px225px|alt:Image showing the FunKey S function key's alternate button inputs and their uses.|FN shortcuts]]

The system has thirteen buttons built into it: four directional buttons, four action buttons, two triggershoulder buttons, a START button, and two system buttons. The top-right system button is the: ''Menu'' button,and while''Fn''. theCentered one toat the lefttop of the STARTcontrol button ispanel, the Fn button. The Menu button hasserves two purposes: a short press activates the system menu, allowing the user to modify settings or return to the main menu, while a long press turns the system on or off. TheSharing Fn (Function)a button haswith severalSELECT, functionsthe toFn extend(Function) theinput capabilities ofextends the system's limited numberbutton ofcount buttons. Pressingvia the Fnuse of button bycombinations. itself is registered as SELECT, while pressing it inIn conjunction with Lthe orshoulder Rbuttons, isFn registeredactivates asthe L2 orand R2, respectively.trigger The other usesinputs of the FnPlayStation, buttonwhile areits shortcutsuse towith modifythe severaldirectional systemand settingsaction withoutbuttons needinggrants to goaccess to the system'svolume, settingsbrightness, menu.zoom, Theaspect settingsratio, thatand canscreenshot beshortcuts. modifiedWhile withthis thefunctionality usedoes [[List of thegames Fnwith buttoncompatibility areissues#Games brightnessthat (Xrequire andadapted B),controls|in volumerare (Ycases]] andoverride A),button zoomcombinations (RIGHTused andby LEFT)games, andeach aspect ratio (DOWN). Additionally,such screenshotscase can be takensolved usingby the Fndevice's plusper-game UPor shortcut.per-console Whilebutton FunKeyremapping Scapabilities. systemsIn comeaddition byto default with eitherthe white or grey buttons (dependinginstalled onby which system color is ordered)default, asidepackaged fromwith the LFunKey andS Rare buttonsgreen, theseblue, canred, beand swappedyellow outbutton individuallysets withthat the includeduser green,may blue,use red,to andfurther yellowpersonalize extratheir button setsdevice.

The FunKey S runs [[FunKey-OS]], a custom Linuxpurpose-basedmade operatingopen systemsource distribution of Linux. TheLaunchable systemfrom comesone withof severalthe device's two application launchers, the device's seven default emulators andenable gamesthe emulation of twelve consoles out of the box, with futureGame updatesBoy toAdvance and improved PlayStation emulation requiring the operatingaddition systemof expected[[#Why todoes addthe supportFunKey forS moreneed emulators.emulated Thesesystem emulatorsBIOS canfiles?|BIOS befiles]] launchedby onthe user. While the devicelist viaof oneconsoles emulated out of twothe launchers,box RetroFEis andexpected Gmenu2x,to grow with bothfuture havingfirmware multipleupdates, themes[[List thatof usersthird-party canOPK chooseapplications#Emulators|third-party between.emulators]] Bycan connectingalso thebe deviceused to agive computer,the usersdevice canadditional supplementemulation capabilities. While the device's includes [[#Which games are included on the FunKey S?|61 homebrew game cataloguegames]] withto help demonstrate its functionality, users may also add their own games byand addingbox their filesart to the gamedevice's emulated system folders ofto theexpand correspondingtheir emulatorsFunKey S catalogue. Should the need arise, users can also edit or delete any file on the device via Commander, the included file management application, without the need to connect the FunKey S to a computer. TheAs filesFunKey-OS usedis toopen buildsource, the FunKey-OSfiles firmwareused areto openbuild sourceit andare publicly available on the FunKey Team's [https://github.com/FunKey-Project/FunKey-OS GitHub] page].

As the unlicensed distribution of videocopyrighted gamegames propertiesin onany ancircumstance emulationis systemillegal such aspiracy, the FunKey S wouldonly constitutecomes illegal piracy, onlywith freely -distributable homebrew games arehand-picked includedfor on thetheir systemquality. This means that users seeking to playemulate copyrighted games originally released commercially on emulatedthe systemsdevice must extract ROM backups from their own copiesgame ofbackups suchand gamestransfer forthem useto onthe theirdevice's ownconsole systemsfolders. Alternatively, a number ofmany games originally licensedreleased forin emulateda systemsphysical format are now available digitally on platforms such as Steam, with the ROMs of those games often extractable for personal use in external emulators such as those of the FunKey S. A list of such games is available on [[List of emulatable games (commercial)|this page]] of the FunKey Wiki.

While users can put ROM backups of their own physical and digital commercial games that they own onto the FunKey S, there areis also manymuch freeware optionsand commercial software that can be legally downloadedacquired and used on the systemdevice. SinceAs the FunKey Ssystem's operating system, FunKeyis both well-OS,documented isand open source, third-party developers arehave ablereleased todozens developof and sharenatively-running [[List of third-party OPK applications|theiroriginal ownand appsported and gamesprograms]] for the platform.device Additionally,that hundredsare ofnot freelylimited available [[w:Homebrew (video games)|homebrew]] games have been released for various systems overby the past three decades, manybottleneck of whichan beingemulator. availableIn forterms downloadof onemulatable homebrewsoftware, lists acrosshowever, the Internet. The FunKey Wiki also maintains [[Available third-party software|lists]] of emulatablehundreds software, includingof [[List of emulatable games (freeware)|freeware games]], and [[List of emulatable games (commercial)|commercial games]] games, andas well as several dozen [[List of emulatable utilities|public domain e-books and utilities]].

To complement the set of default Gmenu2x wallpapers, the FunKey Wiki maintains a database of minimalist FunKey S wallpapers [https://drive.google.com/drive/folders/1dYCPLxipiOZ3FPd67AGfUwI0EEA8UfAF?usp=sharing here]. Users may also use any 240-pixel square PNG format image as a Gmenu2x wallpaper on their FunKey S. Once acquired, Gmenu2x wallpapers should be put in the ''/mnt/FunKey/.gmenu2x/skins/240x240/Default/Wallpapers'' location of the FunKey S file system. If you don't see the ''.gmenu2x'' folder, your computer's Unix-based operating system is hiding hidden folders. To enable the viewing of such folders on MacOS, use the ''Shift+Cmd+Period'' key combination. To do so on ChromeOS, click the three-dot icon at the top-right of the ''Files'' application and select the ''Show hidden folders'' option.

On a sixty minute full charge, the FunKey S has a median battery life of two hours. Since the device's battery life is impacted by CPU usage and brightness and audio levels, there can be significant deviation from the median by roughly thirty minutes in either direction. In practice, this means that low-intensity emulation such as that of the Game Boy will result in above-average battery life, while high-intensity emulation such as that of the PlayStation will result in below-average battery life. Additionally, the device has a blue LED light that indicates when it is charging, with a battery symbol in the top right corner of the main menu indicating the current charge level. WhenWhile the FunKey S begins to runa low on -charge, aindicator chargingis notification appearsdisplayed on -screen. Ifbefore the deviceFunKey S runs out of charge, progressshould inthis theoccur, gamean beingautosave played atof the timecurrent willgame be savedis automatically generated prior to shutdown and returned to when the system is recharged and reopened.

The FunKey S supports the RTC functionalities used by Game Boy Color and Game Boy Advance games, such as Harvest Moon GBC, Pokemon Crystal, and Pokemon Emerald. It does this by siphoning an extremely small amount of charge from the FunKey Sdevice's battery, allowing games that employ the feature to keep track of time. RTC functionality is still preserved even if the FunKey S is turned off or runs out of charge, as there is a buffer of charge reseveredreserved for such an instance. To best make use of the RTC feature, it is recommended that users saverely solely on in-game saves for games with RTC functionality, as save states and automatic FunKey S savesautosaves can affect the RTC timing of games.

The display of the FunKey S display refreshes at a maximum rate of 50 FPS due to that being the maximum writing speed ofmost data beingthe sentdevice's fromprocessor thecan processorsend to the display's internal graphics memory ofeach thesecond. display,If which,this ifwere not limiteda bylimitation, the processor,display would otherwise have a maximum refresh rate of 120 FPS. SinceAs NTSC games are still emulated accuratelyat 60 FPS, however, gamesten withframes frameratesare higherdropped each second rather than thatgameplay being slowed down to match the differing frame rate. As this issue was anticipated during the designing of the FunKey S, function normallyhowever, onlyseveral missingsoftware tenand frameshardware eachtechniques secondwere whileimplemented experiencingto noavoid screen tearing between the remaining 50 frames of NTSC games.

Although the FunKey Team is not currently selling any accessories for the FunKey S aside from what is included with it, the editors of this wiki have compiled [[List of FunKey S compatible keychain accessories|a list of products]] that can be used in conjunction with the FunKey S, including adapters, power banks, cables, pouches, and keychain decorations. To match the FunKey S keychain aesthetic, allresearch accessories listed havehas been checkedconducted to ensure that all listed accessories do not exceed size or weight levels that would make putting them on a keychain difficult and/or inconvenient. Additionally, all items onWhile the list have been checked (to the best abilityeditors of thethis editors)wiki forhave descriptionconducted accuracy,extensive payment security, and product reliability. Despite this, priorresearch to buyingconfirm anythat accessory,all pleaseproducts belisted sureare tocompatible verify that it meets yourand requirementsreliable, as neither the FunKey Wiki editors nor the FunKey Team are responsible for the reliability of third-party products. Therefore, prior to making any purchase, users should verify that a listed product adequately meets their needs.

As both the hardware specifications and operating system of the FunKey S have beenare open sourcedsource and documented on the FunKey Team's [https://github.com/FunKey-Project GitHub page], users are able and encouraged to createdevelop their own software for the device and share it with others. To facilitate this, an SDK has been created and made [https://github.com/FunKey-Project/FunKey-OS/releases/tag/FunKey-OS-2.0.0 available] for [[FunKey-OS]] software development. Additionally, a [https://doc.funkey-project.com/developers/hardware_ref/design/ development guide] is available on the documentation page of the FunKey website. The FunKey Wiki maintains a [[List of third-party OPK applications|database]] of all publicly availablethird-party software developed for the FunKey S, so developers who wish to create an article for their program or add it to one of the lists can either edit the wiki themselves or ask a wiki editor to do so for them.

While the FunKey Team's numerous social media pages are represented with the icons at the top of this page, they can be contacted directly via the [https://www.funkey-project.com/contact contact page] onof their website. If you wish to email them, questions regarding the FunKey S can be sent to their [mailto:support@funkey-project.com support] email address, while other inquiries can be sent to their [mailto:contact@funkey-project.com contact] email address.

In addition to the [https://www.funkey-project.com/#comp-k9gow1reform email newsletter] on their website, the FunKey Team posts regular updates about the FunKey S on [https://www.kickstarter.com/projects/squonk/funkey-s-the-worlds-smallest-foldable-handheld-console/posts their Kickstarter page]. Recent news updates are regularly reformatted and posted on the main page of Thethe FunKey Wiki, with summaries of past news updates available atin the [[The FunKey Times]]. Users wishing to discuss recent news updates are recommended to join the [[FunKey Community Discord Server]].

The FunKey Wiki is a community-managed database of FunKey S information, operated and edited independently of the FunKey Team. Currently, the Administrator of and primary contributor to Thethe FunKey Wiki is [[User:CoolieCoolster|CoolieCoolster]], but anyone is free to contribute to the improvement of the wiki!

Since The FunKey Wiki uses the [[w:MediaWiki|MediaWiki]] wiki engine, the same markdown format that is used to edit other MediaWiki wikis such as Wikipedia is also used here. If you wish to learn the MediaWiki markdown format, MediaWiki has [[mw:Manual:FAQ#Basic usage|several tutorials]] on their website in addition to a [https://discord.gg/ZrV2Ex9 Discord server] where users can ask questions, but if you have any specific questions about editing or templates used on Thethe FunKey Wiki, you may also ask [[User talk:CoolieCoolster|the FunKey Wiki admin]].

Users who are fluent in a language other than English are encouraged to translate one or more of the wiki's pages into that language to improve the helpfulness of the wiki. To translate any page marked for translation, select the "''Translate"'' text above the list of the available languages at the top of that page. If a page has already been translated into a language that you speak fluently, you are free to analyze and improve the translation. If you have translated a page but are unsure on how to implement the translation, feel free to ask [[User talk:CoolieCoolster|the FunKey Wiki admin]] for assistance. For more information about translating on the FunKey Wiki, visit the [[FunKey Wiki Translation Center|Translation Center]].