• Desmume Wireless Connection
• Desmume With Wifi Download

DesMuMe FAQ

This FAQ holds a list of many commonly asked questions about DeSmuME.

If the FAQ is unable to answer any questions you have, then please make sure that you also consult the manual. If this doesn't help, either, post your question on the forums. If it seems that the forum functions according to arbitrary or subtle rules, then it is because it does, and it you may get an inkling of them here: How To Ask Questions The Smart Way

If you really must use an old version of the emulator, check the Faq_094

1. DeSmuME DS Emulator System Requirements: OS: Windows XP SP2 or later, MAC OS X: v10.5.8 Leopard or later (Minimum), OS X v10.6.8 Snow Leopard or later (Recommend) Linux OS. The Nintendo wifi config utility is an utility that's provided with most wifi-compliant games.
2. An icon used to represent a menu that can be toggled by interacting with this icon.
3. Yup DeSmume is now on the test on working wifi, and a good thing to note is that with their latest release not only Pal Park is accessible but also the Sinnoh Underground for Pokemon Platinum. I'm actually testing the Wi-Fi capability of desmume right now and it seems to have good potential.
4. Here is my DesMuMe setup guide for 2020Sub to my gaming news channel DesMuMe here http://desmum.

DeSmuME DS Emulator System Requirements: OS: Windows XP SP2 or later, MAC OS X: v10.5.8 Leopard or later (Minimum), OS X v10.6.8 Snow Leopard or later (Recommend) Linux OS. The Nintendo wifi config utility is an utility that's provided with most wifi-compliant games.

How to fix all missing graphics problems including black or white screens including pokemon

Click emulator options until it works. Be careful!!! You might delete your computer. If you don't want to guess which is the right thing to click, youll have to read the rest of this document. I can't tell you here, because then I would go down the dangerous path of copying everything written later in the document and pasting it at the top, until eventually there were two copies of all the content.

Oh, alright, pokemon players are too stupid to read. Change to software rasterizer. Now, we can't help you do that. You're on your own.

How to get to the menu in pokemon

You're a freaking idiot. I don't care whether you pressed start or select or your belly button in old GBA pokemons. In the DS pokemons it is the X button. Really, was it so hard to use trial and error?

Why can't I play Pokemon HeartGold / SoulSilver ? Why aren't they supported ?

We are not going to support these games. Don't waste time asking, it will only make us angry. We can't cope with the huge flood of noobs which we know is coming. If you can't make it work, then give up and go buy the cart.

To work around freezing, save often and reload when need arises.

If you post questions about these games, don't be surprised if they get closed or deleted depending on how obnoxious they are.

Release 0.9.5 Topics

I can't blow out fires in zelda or use the microphone to make noise in other games!

The builtin rand() and noise samples seem not to work for this in 0.9.5. The linux/osx build have crappy mic noise, it won't work at all. In windows, I have verified that an actual microphone can blow out the candles; if you don't have one available, you may use this noise sample: File:Zeldanoise095.wav

My gamepad controls are going nuts!!!

Argh, I guess you have to unplug all the game devices except for the one you're using.

Why are my colors all jacked up in 0.9.5 in win32?

Oops, looks like we messed up the 16bpp support. We've already fixed it in svn but youll need to use 32bpp with 0.9.5

Using old DeSmuME save files in 0.9.4+

DeSmuME will first try to load a dsv file. If the dsv is missing, it will try to load a sav and then it will immediately dump the dsv. The conversion process is supposed to be seamless.

What is this NOSSE2 and dev stuff? / Why does desmume.exe crash when it loads? / Which EXE do I use?

Use dev if you are a developer and want the gdb stub. Use nosse2 if the regular exe crashes for you because you are on a really old computer without SSE2. desmume.exe uses some SSE2 optimizations which have been disabled in desmume_nosse2.exe ; any modern Intel CPU (AMD or intel) will support SSE2. Note however that most of the really good optimizations use SSE which is enabled regardless.

Help, desmume doesn't even run!

reboot your computer, upgrade or downgrade your video drivers, try the nosse2 executable, etc.

Oh no, my savefile saved games are gone when I upgraded to 0.9.5!

0.9.5 by default looks in a different location for .dsv files. Formerly it was the rom directory, and now it is a subdirectory of the directory that the emulator runs from. Use the path configuration to point to wherever your .dsv files are, or copy them to the new spot. If you have been running into problems with this you can probably verify it by searching for *.dsv on your hard disk and finding duplicates. Be very careful when copying files around that you do not overwrite the old (good) ones with the new ones.

Savegames and Savestates

Why does this game fail to save? / I get the error 'Data could not be accessed. Turn off the power and reinsert the DS card.' or 'Unable to write data. Please turn off the power and reinsert the game card.'

Until version 0.9.4 DeSmuME's save size autodetection was poor. With 0.9.4, autodetection should work almost all the time. In fact, here is the entire list of games we currently know of that fail to autodetect correctly:

• Spider-Man 3 (should be autodetect_size=1, detected as 3)
• Over The Hedge (should be autodetect_size=1, detected as 3; same failure mechanism)

If you find any other game for which automatic savetype detection does not work, please let the developers know by posting on the forum or submitting a bug. If you want to fix it yourself, you may need to manually specify the correct save type for your game. Consult the manual for details on how to do this for your platform. You may also consult http://www.advanscene.com/ to easily identify the save type for your game.

Why was the save file format and extension changed from .sav to .dsv ?

Because it is better now. These raw save files that everyone uses aren't good enough and were causing problems with autodetection. See our bug tracker or forum for more details; the dsv format has been documented in the svn source tree as dsv.txt and if you don't like the degree of interoperability with other emulators, then go tell the other emulators to support our format.

Can I use my save states across versions?

In general, maybe, maybe not. From 0.9.4 to 0.9.5, definitely not, i think. Due to constant internal changes in DeSmuME, it is possible that a save state created with one version may not work with another version of DeSmuME. Savestate compatibility is preserved wherever possible, but it is not always possible. Please note that for easily confused gamers, the use of SAVESTATES is discouraged, as these are likely to break between emulator versions. Instead use SAVE FILES. These are likely to survive between emulator versions. This means that you will have to use save points within the game. SAVE FILES are stored in .dsv files. Also, see this article for further details : Savefile or savestate

Can I convert an ideas or no$gba nocash .sav savefile to DeSmuME .dsv?

1. Convert the save file using http://shunyweb.info/convert.php ; the target format should be 'Acekard RPG | EZFlash V | RAW Format [Autodetection] (.sav)'
2. Load the game. Let it get to the main menu
3. Select the correct backup size*, as specified by advanscene.com (which is not always right, by the way)
4. Use File > Import Backup Memory and pick the converted save file
5. Reset the game

(* Step 3 is not always necessary, if you are smart and lucky, however, it will never hurt to do it.)

How do I make Pokemon saves?

Update to 0.9.5, which ensures the save type is detected automatically and correctly.

Why can't Pokemon save after beating the elite 4?

Your save file is 9KB. It should be 513KB. Your save file is broken due to you never having established the right savefile size. That means you made it all the way through the game without saving and then testing it by loading (which would not have worked, if you had tried it). See the above discussion for why that was a very bad idea. In post-0.9.4 svn or 0.9.4+ rr builds you may see an option in the savetypes menu called FORCE AS CURRENT which, when used after picking the correct pokemon savefile size (4mbit) will hopefully permit subsequent saves to create a correct savefile.

In order to do that youll have to load your savestate first. If you have been using 0.9.4, since savestate compatibility between versions is not warranted, and definitely won't work between 0.9.4 and 0.9.5, you'll have to use Gocha's 0.9.4+ build which is located at http://tasvideos.org/forum/viewtopic.php?p=210670 which will be able to load an 0.9.4 savestate.

These instructions were not explicit enough for one user. In an effort to tailor this information to the intellectual capacity of the audience for this question, I will paste the instructions which apparently were simple enough for him to follow: go to the faq. follow the link to gocha's build. download gocha's build. load the savestate. set the size (4Mbit). use force as current. save the game. exit the emulator and verify that you can load the game from the savefile. if you can, then load it and play through to complete the game.

Wi-Fi and WFC

Does DeSmuME support wifi?

Wifi is not supported. It is currently under slow and incomplete development. Therefore, you may find this option missing, or simply 'greyed-out' for now. Also, since WIFI support does not work yet, don't ask any questions about it's functioning because it still is unfinished and does not work yet. Furthermore, current development activities focus mainly on the Windows build.

Why did my build come with winpcap.dll? / Why do I get crashes when I run DeSmuME on vista which mention something about winpcap?

Because you are running an unofficial build, from dubious origins, made by unknown people. The DeSmuME team cannot support builds it did not create itself. Therefore, you are advised to stop using unofficial builds, as you can expect no support from the DeSmuME team or on the DeSmuME forums. Only use builds you downloaded from the DeSmuME website.

What is WFC / Nintendo WiFi Connection?

See the article Nintendo wifi config utility for more information.

Troubleshooting and Errors

Help! My desmume window disappeared! Maybe I can hear sound and it is in the taskbar but I can't see the window

Delete your ini file. This is caused by exiting the app while you have executed win+d show desktop mode. Desmume tries to remember the window position, but windows implements show desktop by setting the window position to something like x=-32000 and so that gets saved. There is supposed to be some code to handle that case, but I guess it is not working well. This is a problem in many windows apps and this solution will usually fix it. If you don't want to lose all the other settings in your ini file, poke around in it and find the offending items which should look like this:

Delete the -32000 items

Why does my touch screen not work? Oh yes you did read my mind, I was using external firmware

It's a bug. It is not a high priority since nobody yet has proven that they actually need the external firmware.If there was a way around it, I wouldve just told you.You may observe this error as incorrect touch screen coordinates, or totally failing touch screen.

Why does my touch screen or other buttons not work? I am not using external firmware

Then you are using <= 0.9.5 linux/OSX builds. This will be fixed in 0.9.6

I have a gameplay related question

Please check a site like http://www.gamefaqs.com, and don't post gameplay related questions on the forum or IRC *unless* you believe there is a bug in the emulation of DeSmuME.

Why doesn't my DeSmuME play this game?

Go to desmume.org and make sure you are using the latest version. The latest version is 0.9.5. Hint: DeSmuME 0.8 and 0.3.4 are very old, being numbers smaller than the latest version. Older versions will not be supported, under any circumstances.

Why doesn't my game boot or progress into the main game engine?

DeSmuME is not perfect yet. Some games may fail due to wifi emulation. You might find ways to patch the games to work better on emulators by searching on the internet, but that is not something you should seek help with on the DeSmuME forums. If it really doesn't boot up, you can submit a bug report for the game on the sourceforge bugtracker.

Why doesn't OpenGL 3D work in Linux?

Blame NVIDIA and ATI for putting out shoddy and/or closed source drivers. Then switch to software rasterizer.

Why doesn't OpenGL 3D work in windows?

You are probably using an ATI video card. ATI driver support of OpenGL is known to be poor. NVIDIA cards have a much more robust support of OpenGL, so getting one of those will help. Alternatively, you can switch to software rasterizer.

My graphics display is incorrect or corrupted or something is missing

Try switching the 3D Renderer from OpenGL or SoftRasterizer, or vice versa, to see if that resolves the bug. In Windows, the default hotkey to do this quickly is numpad minus. Please note that some 3d features may not be emulated in the OpenGL renderer due to it being hard or impossible or just not done yet.

My display has flickering graphics in a certain game

In the 0.9.4 Windows port, you can choose 'Alternate Flush Mode' in the 'Config | 3D Settings' menu. This fixes some games with flickering graphics. This option is no longer necessary in 0.9.5. If you still have flickering graphics, find the discussion about frameskipping in this doc (try turning it off.)

Why does music and FMV sound bad/distorted sometimes?

Most DS music is sequenced music, loaded from the cart entirely when the level loads. This works mostly fine, but bonus points for you if your ears are good enough to spot the bugs. Your music that doesn't work well at all is probably streaming music, which loads from the cart on the fly and goes straight to the speakers, and possibly decoded along the way. This includes FMVs. This is much harder to emulate as it requires correct timing, which is not one of DeSmuME's strengths right now. At any rate, in 0.9.5 support for a synchronized SPU was added for the windows builds which can be optionally enabled to make these streaming sounds work correctly. Synchronizing audio is a hard problem to solve, and we're not finished solving it. The synchronous SPU comes with some other issues, which is why it is optional. Also available, if you are using the windows build, is a command from the menu Emulation > Shut Up to make the offending music go away.

Performance

Why is the emulator slow?

Because nobody pays us to work on it full time and it runs fast enough for us to be happy. Well, almost.

New releases may always be a step backwards in some (or many) cases from earlier releases in terms of speed. There is a delicate balance between compatibility and speed and sometimes one advances further than the other. At any rate, we have introduced a few speed hacks and toggles which you may find helpful:

• (0.9.4) If you are in Windows, make sure you're not using the NOSSE2 build. That one is slower.
• (0.9.5) If you are in Windows, make sure you're not using the NOSSE build. That one is slower.
• (0.9.6) If you are in linux or OSX, try issuing --num-cores=2 or --num-cores=4 as appropriate to the emulator, as these ports don't know how to detect the numprocs on your system.
• (0.9.5) If you are in linux, try making a build with SSE and SSE2 extensions enabled because the code is ready to handle it. Someone should provide details on how to do this.
• If you are using someone else's unofficial 'SVN' build, it probably is not fully optimized, since we make our Windows releases using some profiler-guided optimization, which helps by several FPS. For all I know, they are also carriers of viruses, and lately they tend to crash on Vista.
• If you can handle it, turn off the sound.
• Use frame skip. Even frameskipping by 1 will help and many games will stay playable. Frameskipping is continually tweaked in each release to get more bang for the buck, but beware that dual screen 3d games still may not work well under frameskip. If screens seem stuck, pick a different frameskip value.
• (0.9.4+) In the sound options, set interpolation to none which should help a little bit.
• (0.9.4 only) Turn on the sound option 'ADPCM Caching'; this is new and experimental, and will break some things, but it should offer a substantial speedup in some cases.
• (0.9.5+) Use dual/asynch SPU mode -- even if you turn off the sound. Try alternate synch methods if you must use synch spu mode.
• (0.9.4+) There is now the option of disabling an entire screen. (Tools > View Layers > Main GPU, etc) Consider disabling a screen which is useless in the game you are playing. NOTE: View > LCDs Layout > One LCD *WILL NOT* increase your speed. This merely hides the lcd, but it is still rendered. This is important for dual screen games and other weird cases.
• Try the software rasterizer. In many cases, especially games which make only light use of the 3d hardware, this will actually run faster, by as many as 10 FPS. But it might also run slower, again, by as many as 10 FPS.
• (0.9.5+) If you are using the software rasterizer, disable edge marking and fog if you feel like they aren't needed. If the game isn't using those features then this won't help.
• Buying a newer, faster computer is somewhat more expensive, but it has other side benefits.
• A faster CPU is more helpful than a bleeding edge graphics card. DeSmuME is more CPU intensive than it is GPU intensive. It just needs a graphics card that is glitch-free, and currently the NVIDIA cards have a better track record. A newer graphics card has a slim possibility of increasing speed.
• The cheapest way to get 60fps is to buy the cart. You may find that this is not enough, and you need to buy a console as well. Here are some steps that have worked well for me in the past:
  • Look for neighbors that are mowing their own lawns. Ask them if they would like for you to do it instead.
  • Borrow your daddy's lawn mower and mow the neighbor's lawn.
  • After this, they will generally give you cash. As you repeat the above steps, this cash can accumulate to large values.
  • Once the accumulated cash is sufficient, it can be taken to a merchant where it can be exchanged for games and consoles.
• My lawn needs mowing. It wont make your game run any faster if you mow it for me, but I am less likely to get evicted, which would be bad for my productivity.

Does DeSmuME make use of multiple CPU's or multiple cores?

Currently, the Windows port has two particular multicore optimizations (in 0.9.5+): first, the display logic runs in its own thread independent from the emulator. This is used to make the OSD run frame-rate independent from emulation. This thread performs color conversion, filtering, and directdraw presentation. The net result is a speedup by a few FPS. This codepath is disabled on single core systems, and may be disabled forcefully by the user with the --num-cores=1 command line argument. Second, the software rasterizer will run in a SLI mode using as many cores as you have specified (or have been detected) up to four. Still, DeSmuMe benefits MUCH more from a single CPU with a higher GHz than from multiple cores or from multiple CPUs.

In 0.9.5, what do the three numbers or the percentage in the FPS display mean

The first is your actual FPS which is how fast the emu is running on your system. If it is less than 60 then you need speed hacks or more a more powerful CPU. The second is the 3d FPS, which is a rough gauge of how fast the game is supposed to be running. If you are seeing 60/15 then the game will feel slow because it is sloppily coded but theres NOTHING YOU CAN DO ABOUT IT short of turning off speed throttling and playing at 100fps. The final number is the ARM9 load average, and for your purposes, it is the same as the second number. Don't start bragging about how your desmume runs at 99% or you will be laughed at.

Using The Emulator

What are the minimum hardware requirements for DeSmuME ?

From a purely technical viewpoint, there are no minimum requirements. However, for 'real-world' playable speeds, you would need at least the following :

• Windows OS: Windows XP or Vista
• Linux OS: Any recent Linux distribution with a 2.6 kernel.
• 2 GHz Processor
• 512 MB Available System Memory
• Available Hard Drive Space: A few MB for the emulator
• 128 MB 3D Video Card (Nvidia GeForce 6800 or better), ATI cards are not recommended.
• Optional: Sound Card, if you want sound support
• Optional: Microphone, if you wish to make use the Windows Microphone feature

What are the recommended hardware requirements for DeSmuME?

From a purely technical viewpoint, there are no recommended requirements. However, for 'real-world' playable speeds, the following gives you good performance:

• Windows OS: Windows XP or Vista
• Linux OS: Any recent Linux distribution with a 2.6 kernel.
• 3 GHz Processor
• 1 GB Available System Memory
• Available Hard Drive Space: A few MB for DeSmuME, 100MB or so for a bunch of savestates and savefiles.
• 512 MB 3D Video Card (Nvidia GeForce), ATI cards are not recommended.
• Sound Card.
• Microphone.

In general, the more GHz, the better. The faster memory, the better. DeSmuME benefits a little but from multiple cores but not as much as raw ghz. DeSmuME is at the moment, unfortunately, slower than no$gba. It is reported that a 3ghz core speed on a core2 or better will get virtually every game playable.

It is hard to zoom in on a widescreen display due to the unusual aspect ratio of the DS

In fact it is hard to zoom in on a 4:3 screen, too. In 0.9.5, you can configure the screens to be side-by-side, so maybe this will make you happy. Additionally you can choose to display only one screen. I don't think anyone wants to add tear-apart windows, though.

But will you please add screen splitting / window tearing apart / fullscreen modes?

You think youre the first person to have thought of this? The answer is no. Of all the things in the world to code, we hate this the most.

How do I enter 'cheat codes' in DeSmuME?

As of 0.9.4+, there are two types of cheat codes: Action Replay and 'raw' or 'internal' cheats. The 'raw' or 'internal' cheats include cheat-finding facilities where you may manually search for and alter the memory positions which work to your advantage. There's an excellent article on 'raw' or 'internal' cheats in the wiki on Using Cheats in DeSmuMe . For Action Replay Cheats, You can find codes for the NTSC games at http://us.codejunkies.com/Departments/DS-and-GBA.aspx and for the PAL at http://uk.codejunkies.com/Departments/DS-and-GBA.aspx.

I entered a 'cheat code', and now the emulator freezes or crashes.

Most likely it's a problem from the (Action Replay) cheat code you used. Using codes modify the game and can make it crash/freeze if it comes to an unexpected situation. It just depends on the code you use and what it's used for in the game. Find the .dct file in your emulator's folder that matches the game's filename, and then erase it to solve the 'freezing' or 'crashing'problem.

Does DeSmuME support the microphone?

Yes, but only on the Windows and GNU/Linux ports. You do need to have an actual microphone attached to your PC, though. In 0.9.2 the microphone in Windows really only works for noise, but this was fixed in 0.9.4; it was fixed even further in 0.9.5. Linux support will exist in 0.9.5+ -- please note that it requires libasound.

When in windows, if it seems that the microphone is not working, bear in mind that it has no idea what kind of how many microphones you have. You will need to use the windows control panel to specify the correct microphone as the default audio input device, and then make sure in the recording level properties (volume control) that it is selected and at an appropriate volume.

Does the 'GBA slot' option let me play GBA games?

No. A 'real' DS can use the gba slot to play gba games, but DeSmuME does not emulate this. But a 'real' DS can also use the gba slot to access gba roms and sram so that ds games can import savefiles, and that part is emulated by DeSmuME. (please note that in 0.9.4 this is reportedly buggy for some games, including pokemon; this is supposed to have been fixed in 0.9.5) If you are looking for a Game Boy Advance (GBA) emulator, perhaps you can try mednafen or VisualBoy Advance.

How do I 'Close the DS'?

This can be done using the 'lid' command or BACKSPACE key (this can be changed in the control configuration).

How do I use the stylus (pen) to 'touch' the screen?

You can use your mouse to emulate the stylus. Move the mouse cursor to the desired position, and then press the left mouse button in order to 'touch' the screen at the position the mouse cursor is located. Yes, we have really been asked this question before.

Can I run 2 sessions of the emulator linked together as if two different NDSs linked ?

No. A real NDS uses WIFI for multiplayer, and that isnt emulated in desmume yet. Also, look at the questions on WIFI Support

How can I touch two points on the screen at once, as required by Hotel Dusk?

One user got past this by first switching on one of the switches, then pausing the game, and sort of switching on an imaginary switch in the middle of the two switches while manipulating the frame advance hotkey. See, gbatek says that when two points are touched, that the hardware appears as if the average of the two points is actually pressed. But the game expects you to touch them at not-exactly-the-same-time.

General Questions

What does DeSmuME emulate and on what systems?

DeSmuME attempts to emulate, as faithfully as possible, the Nintendo DS and Nintendo DS Lite handheld game consoles (NDS). It currently runs on Windows, Linux, and mac OSX. DSi is not supported.

What does DeSmuME mean?

DeSmuME is a Nintendo DS emulator and the name is a play of words - DS Emu + ME (like FlashMe - firmware hack and PassMe mod-chip for DS)The name DeSmuME derives from the popular use of ME in Nintendo DS products by homebrew developers. So DeSmuME would equal DSemuMe. Other popular uses of ME include:

• LoadMe - a generic patcher for commercial DS roms that works with any GBA Flash Card
• PassMe - 'mod-chip' using which takes authentication from an original DS card an allows execution of unauthenticated DS rom code - from the GBA cartridge slot / GBA flash card.
• FlashMe - a hacked firmware for DS that allows you to start code in DS mode from a flash card in the GBA slot.
• WifiMe - are a set of a custom drivers and software by FireFly for RALink based wireless network cards enabling to boot homebrew code on DS via Nintendo Wireless Multiboot method.

Its name is derived from emu which is short for emulator, DS and me. It's possibly supposed to mean 'DS emulator for me'.

Under what license is DeSmuME distributed ?

DeSmuME is distributed under the GNU General Public License, or GPL: http://www.gnu.org/licenses/old-licenses/gpl-2.0.html

Can I freely copy DeSmuME ?

Yes you can, as long as you adhere to the license as specified in the GNU GPL.

Where can I report bugs?

In the official bug tracker. Feel free to post to the bug tracker as long as you are willing to take ownership of testing that bug and letting the developers know when it is resolved to your satisfaction. Just don't submit a bug report and run. You may also request features around the same location, too, but in the other trackers.

Can I attach files to bug reports I did not create myself ?

SourceForge likes for folks to only respond on items they submit. If you see a ticket that represents something you are encountering, SourceForge doesn't necessarily want you commenting on that. The reasoning for this given by SourceForge is that they feel it is best to open your own ticket, which helps appreciate the extent of issues in many cases. The authors of DeSmuME may or may not agree with this point of view from SourceForge.

What is 'TAS' ?

TAS lets you record the gameplay in TAS format, see http://tasvideos.org for details on TAS (tool-assisted speedruns).

What hardware features are emulated?

• All known 2D graphics features are correct. Mosaics work but are imperfect. There may be small issues with colors as the correct color bit depths are not used at all points in the pipeline.

• All 3D features are emulated, except the following: wireframes and antialising. In 0.9.5, support for fog is added, as well as edge marking which mostly-works but is not perfect. In 0.9.5 the box test was significantly improved (dare I say perfected?) which fixed a number of games. The OpenGL engine is near its limit and renders some things incorrectly. Eventually the software rasterizer will support more features and be far more precise in the basic features. Both engines have trouble with some shadows, but software rasterizer is better. Software rasterizer has some noticeable texturing issues right now, especially in 2d games. Software rasterizer supports more correct lighting interpolation than opengl ever will (e.g. glitches at the edge of the screen while scrolling.) In software rasterizer, there are issues similar to 2d with incorrect bit depth being used in the pipeline. There are unfavorable edge conditions in each renderer; in OpenGL, textures tend to get overdrawn; in software rasterizer, edges of textures tend to be jittery (like the real DS)

One last thing -- if buttons and labels and menus rendering on the 3d screen are obscured (for example, a button but no label is on it) then you may need to use the software rasterizer. Or you may need to use OpenGL instead. Each renderer has strengths and weaknesses, which is why both are provided.

• All sound features are emulated. The microphone support is new and the manual should be consulted, where you will find out, among other things, that it is only supported in windows right now.

• Wifi is not supported. It is currently under slow and incomplete development. Therefore, you may find this option missing, or simply 'greyed-out' for now. Also, since WIFI support does not work yet, please don't ask any questions regarding it, because it still is unfinished and does not work yet.

• We are unaware of any outstanding issues in the core system hardware (CPU, DMA, MMU) but there are certainly still some. The instruction and memory timings are quite incorrect; however, this seems not to hurt most titles.

• DLDI - Dynamically Linked Driver Interface, commonly known as DLDI, is a driver framework that allows NDS and GBA homebrew to easily read and write to any number of different devices, just by substituting a driver file. The MPCF driver (GBA MoviePlayer CF-version) is the only one that is supported, so you will need to install it into your application before using it in desmume. You will find that a directory or fat image must be mounted via the commandline or UI for the 'gbaslot' configuration. Right now, our codebase really only has libfat support for SLOT-2 devices and CF devices so more thorough support for other DLDI drivers is unlikely at this time.

• RTC (real-time clock) works; If it didn't, then the time in your games stays at 00:00:00, and your random number values always come up the same.

Does the GDB stub still work?

It seems as if it works in 0.9.4, tested with the Insight GDB variant on windows with a recent devKitPro. This support has been compiled into the dev+ build.

How do I enable the GDB stub on the Windows port ?

Add #define GDB_STUB to src/windows/userconfig/userconfig.h which you have created according to the instructions in src/windows/defaultconfig/userconfig.h ; sorry for this confusing system, but that's how it is for now.

Does compact flash works?

In 0.9.2+ it works, somewhat buggily, at least for directory scanning (i.e. not fat16 image) in windows via the gba slot. There is a bug that breaks it in linux, which has been fixed for 0.9.5+ along with some other work on that system.

Where/what is IRC?

IRC is an on-line communication system.

data you need:

• server: irc.freenode.net
• port: 6667
• channel: #desmume

what to use:

• mIRC - Windows
• ChatZilla - FireFox add-on
• xchat - X
• plenty other, see wikipedia

Language:

• Most of the people on the channel speak, or try to speak the English language.

Where is the manual?

Desmume Wireless Connection

A manual for DeSmuME is over at http://wiki.desmume.org/index.php?title=Manual. It may not have the information that other entries in this FAQ promised that it would.

Where is release 0.9.3?

Who cares? 0.9.4 is out now.DeSmuME 0.9.3 does not exist. It was sneaked out of our staging area. It has bugs, which is why we hadn't released it yet. So we decided not to release it at all. Any release claiming to be 0.9.3 won't be supported.

What is DLDI?

DLDI is a patching system for homebrew ROMs using libfat which makes DS homebrew much easier to write and much more user friendly. As you may know, there are many various flash cartridges for DS. These 'flashcarts' use different hardware, so to make a program run on all cards, you’d have to write support for each and every card into the program. But no-one needs support for any other cards than their own.So a libfat developer, chism, developed DLDI. The program itself knows nothing about the hardware. However, when a “DLDI patch” is applied, libfat can use this patch to know how to write to the flashcart. So, if one user has an M3 flashcart, and downloads a program, they could patch it with the M3 DLDI patch and the program would work with it. Then, another user with a Supercart could download it, apply the Supercard DLDI patch, and it would work on their flashcart, too. The same patch should let the flashcart work with any libfat based program.

How can I post a save file or AVI capture on the DeSmuME forum?

After you created it, you can upload it to a free external service provider like MediaFire (http://www.mediafire.com/), and then put the provided links to the page in the message you post on the forum.

How can I record an AVI with a gap between the screens?

Learn how to use virtualdub and avisynth. Then use the following avisynth script which we have developed for this purpose:

We really don't want to put any smarts into the desmume avi dumper, preferring to do it with avisynth instead. It is a slippery slope, as there are about 50 things that people want avi dumpers to do and theyre better off learning how to do it outside the emu with other tools. To that end, if you have any particular needs regarding this do not hesitate to post in our forum and maybe we'll help you make a new avisynth script.

Here is a script that crops the movie down to just one of the screens

There are more scripts and more pro users of avisynth for these purposes at this forum:

How can I post a large log or other text file on the DeSmuME IRC chat room?

Make use of an external text storage site, such as 'pastebin' (http://pastebin.com/), and post the url to it on the IRC channel.

What are the origins of DeSmuME?

DeSmuME is a freeware emulator for the Nintendo DS originally created by YopYop156. The original website was http://yopyop156.ifrance.com

Due to change in French laws regarding emulation YopYop decided to stop development of DeSmuME. However, he released the source under the GPL, and other programmers have picked it up and kept it under active development.

Yopyop said:

It’s release under GPL. I have just removed the new 3D engine because it’s too much bugged. Hopefully it will be helpful for some of you.

The latest statement heard from yopyop was:

DeSmuME project is over.

You may don’t know but there are a new law in France that could put me in big trouble.

With DeSmuME, I have closed the doors of game company but I can not offer to pay for it.

The worst thing is that I have found the bad coded instructions.

For those how have download the sources you have to look in sbc, rsbc instructions the Carry flag updating is wrong.

Sorry for the home brew programmers.

For the illegality the demonstration seemed to me convincing thus without proof clarify I prefer to stick to this decision.

It is also the fact that few people seem interested by the project. Put besides some people who sent demonstrations to me which did not go, I received only malls to wonder to make function such or such plays or to ask me why moved is in French .

Thus I will not do something of useless and illegal.

For the site it would not obstruct me if there were not the bond on the left which does nothing but add to confusion on the goal of the project.

And for the sources it is the same problem as for the project.

good week end

yopyop

edit the law relates to the royalties and the rights close, not?

However, when Guillaume later asked for permission to use the DeSmuME name, yopyop told a somewhat different story:

Pour la loi c’était juste un mauvais poisson d’Avril. En fait la loi et le 1 er Avril aussi proche étaient trop parfaits pour faire un petit poisson d’Avril. Mais bon avec des réactions comme celle de mon site préférait je préfère mettre un terme à ce projet perso qui est devait être amusant.

That can be translated to

The law thing was just a bad April's fool. In fact, the law and April 1st were so close that I thought it would be the perfect April's fool. But after feedback like what I got from my favorite site, I prefer to stop that hobby project that should have been fun.

You can get the full thread here: http://www.playeradvance.org/forum/showthread.php?t=385&page=9

SVN and Compiling

Where do I get svn builds?

Go to emucr.com and download at your own risk. We don't make those builds; we don't know anything about them; and we don't support them.

Why doesn't the DeSmuME team release pre-build SVN binaries ?

Because the DeSmuME team doesn't have trusted people to make the builds, and don't want to get involved on builds that could include whatever the author wants. Every newbie coder could do a version that, after 10 minutes of gameplay, for example, starts corrupting stuff from the hard disk. Also, anyone incapable of building it's own builds, probably isn't very helpful for submitting bug reports or helping the development team on SVN releases, so there isn't much point on them getting a SVN build.

How do I get the latest svn code and build DeSmuME myself?

Please check out the instructions related to your platform, over at Installing DeSmuME from source

What is 'SVN' ?

svn is a developers tool. It's used to let multiple developers work on the same codebase without conflicts. If youre an end-user, don't worry about it. And if you're a developer, see the question on how to get the latest svn code and build DeSmuME yourself. See wikipedia for more info

What compilers are supported for building DeSmuME from source?

• At the moment, for Windows Microsoft Visual C++ 2005 and 2008 are the only supported compilers. Dev-C++ is not supported. Microsoft's Visual C++ Express is free to install and use, so there's no reason not to use it.
• For Linux, any recent version of GCC and toolchain should work.

I'm Compiling using MSVC Express On Windows, and I get the error : 'ml.exe' not found.

ml.exe was not included in earlier downloads of MSVC++ 2008 Express Edition. Uninstall, redownload and install again. 'ml.exe' shoud be located in the 'Microsoft Visual Studio 9.0VCbin' directory.

Development and Technical Questions

I have a patch, modification or other code addition

Please add them to the appropriate sourceforge tracker. Patches go to the 'Patches' tracker : http://sourceforge.net/tracker/?group_id=164579&atid=832293

I'm a developer, and would like to contribute to the codebase. What can I do?

To start you off in the right direction, the best thing you can do is join the developer team on IRC and discuss your intentions with the developers.

Im not a developer, but would like to help out anyway. What can I do?

The most helpful thing you can do is use DeSmuME, learn its ins and outs, and learn how to compile svn builds. Then monitor it for regressions and report bugs. You can patrol the bug tracker for bugs which could use elucidation or which, based on your awareness of how the emulator is changing, might be fixed without us having specifically addressed the bug. Basically, be a super user. And hang out on irc. Also, adding to or perfecting the documentation in the wiki is useful. You could also watch for and answer questions placed on the DeSmuME forum.

What is this Lua stuff I see?

It is sort of a macro language for interacting with the running game software. Here is an example of it working with an NES game in another emulator, and youtubing for 'fceux lua' should suffice to explain it if you don't get the picture from this url: http://www.youtube.com/watch?v=1XNTjVScm_8

How do I easily capture the ASM code for troubleshooting purposes?

Savestate during the problem or just before your problem occurs, and #define WANTASMLISTING in armcpu.cpp. Recompile. Then redirect stdout to a file. I know it isn't easy but its what we have for now.

A newer, and possibly better way, is to search for LOG_ARM9 in ndssystem.cpp and uncomment it. You will also need to trigger the condition for logging by setting dolog=true. Beware that this is very verbose, and can dump around 100MBytes of logs per frame.

Where can I find technical details on the Nintendo DS and GBA?

How can I do a printf to the emulator console?

You may use Ideas-style printf by executing SWI 0xFC with the null terminated string address in R0. More info here: http://www.console-dev.de/2009/05/17/print-formatted-text-to-ideas-debug-console/

Mac Users

I have OSX 10.4.x and I can't use DeSmuME 0.9.5

Yeah, looks like it doesn't work in 10.4.x. Sorry.

Why does DeSmuME 0.9.5 look and act different than old osx releases?

By different, you mean better. It is a build of the GTK port, which has been chosen since the cocoa port is abandoned by mac programmers who are all busy making $1 iPhone turds nowadays.

Why can't I find a Mac binary?

Maybe we haven't made it yet. There aren't a lot of people willing to compile Mac software. Just to be sure, go to https://sourceforge.net/project/showfiles.php?group_id=164579&package_id=186413

Why does my Mac binary say something about being unsupported?

You have probably downloaded the i386 version of DeSmuME for MAC, and are running on the PPC platform (or the other way around). Please verify if you're running on Intel (i386) hardware, or on PPC (G4, G5) hardware, and download the appropriate binary. For 0.9.5 there is only an i386 binary, and PPC won't be supported unless someone makes a cocoa build which will suck.

Why doesn't a menu option or tool exist in my Mac build?

Because making portable tools and platform harnesses are not our cup of tea and so a developer puts a feature into whichever ports he cares about. This policy is never going to change, although some features might migrate to other platforms over time. Better check the manual.

Linux Users

Why doesn't a menu option or tool exist in my Linux build?

Because making portable tools and platform harnesses are not our cup of tea and so a developer puts a feature into whichever ports he cares about. This policy is never going to change, although some features might migrate to other platforms over time. Better check the manual.

Homebrew Topics

Tell me about nitroFS or libFAT

libFAT has been working for quite some time, via MPCF DLDI as mentioned earlier in the faq.As of r3117, the devkitpro argv is supported. This enables nitroFS to use libFAT to mount the nds rom, but it expects the rom to exist within the filesystem at fat:/rom.nds; if you supply a compactflash root directory equal to /path/to/ where your rom is at /path/to/rom.nds, (and of course patch w/MPCF), nitroFS will be able to initialize. Alternatively, in r3117 also, --gbaslot-rom=path/to/rom.nds was added which will also support nitroFS via its gba-mounting mode.

0.9.4 has an unknown set of features (I can't remember.)

0.9.5 supports libFAT in windows and linux, and gbaslot in windows via the gui.

Desmume With Wifi Download

0.9.6 (will) supports both functions in both ports via commandline (and of course gui in windows)

desmume 0.9.6 wi-fi version

File number: 25677

Downloads: Total: 22900 | This Month: 2599

Type: file

User Rating: 9 (1165 votes)

Language: English

Operating system: Windows XP/2003/Vista/Windows 7

File: desmume 0.9.6 wi-fi version

*** This software was checked for viruses and was found to contain no viruses. ***

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Mahjong Fight Club DS – Wi-Fi Taiou (J)(Legacy) ROM – Emuparadise, There are no descriptions available for Mahjong Fight Club DS – Wi-Fi Taiou (J)(Legacy) in our database. … Desmume [Version: 0.9.6-win64bit] Size: 1466.11K. Type the name or word containing the accented letter. File extensions can be appropriated by any program, and thus it’s possible your particular VDB file isn’t used by any of the above programs. For instance, some women may want to avoid matching their eyeshadow precisely with their eye color, because that could create a one-note look to the eyes. This feature will strongly protect your images, it can prevent users from getting the original image files. Type the email message you want to insert your signature into. ShortcutsTotalTunes Control is all about shortcuts.

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