This is a new release of DesmumeX, the Nintendo DS emulator for Xbox. It includes several small new features that can be very usefull, and I think that this can be considered the first stable release of DesmumeX. So, this is a good moment to start building the compatibility list!
What is this?
DesmumeX is a Nintendo DS emulator for Xbox. It is based on the 0.9.11 version of Desmume.
Please, don't expect a good emulation in many of your roms. This emulator is still not fully optimized. Anyways, this version can play some games quite well.
IMPORTANT: To toggle between the different display modes, press the BLACK BUTTON (read the "Controls" section for more information). If all the action happens in only one screen, you will feel a much better experience if you choose to show only that screen at full resolution
Only uncompressed roms are supported.
What is new?
DesmumeX v0.85 has some important new features:
* The "Limit to 60 FPS" functionality has been finally fixed. Now we can play at the exact proper speed to all the games that ran too fast, like Yoshi Island!. Use the "Limit to 60 FPS - Desmume" option in the configuration settings, as it is the best choice now.
* The firmware language can now be changed. This is mandatory if we want to play several multi-language games in a language different than English (Spanish, French, German and Italian).
* A memory optimization has been done, and now we have around 4 free additional MB of RAM. In this way, we can play some games that crashed due to lack of RAM.
* Pressing the Left Thumbstick, we can toggle displaying information about the Frames-per-second, and the Free Available Memory. Displaying the Free Available Memory is very usefull in some games that waste more and more memory over the time (Professor Layton!). These games crashed after being played for a long time... but if we are seeing the available amount of RAM, we can just save the game when we have 1 MB or less. We don't need to be saving the game all the time anymore!
* With the combination of the 2 points above (more free RAM, and displayed free RAM) we can play those games that waste infinite memory for a long time, and also we know when the game is near to crash, to simply save the game and reset it.
* Speed has been slightly increased, due to several small optimizations.
* Roms MUST be placed in the "roms" directory.
* Roms must be UNCOMPRESSED, with the .NDS extension.
* This emulator can only work from hard disk.
* Games can be trimmed with a program like "NDSTokyoTrim25Beta2.exe" to make them smaller, and they will use less space in disk.
* Remember that when you have selected a configuration for your rom in the GUI, you can press the "Y" button (before starting to play the game) and then the emulator will create a config file for that game (stored in the "cfg" folder). Next time that you play that game, the emulator will "remember" your favorite configuration. This system needs that the folder "cfg" is existing, to be able to create the config files. A few sample configurations have been included.
Problems with savefiles should have disappeared in the former v0.8 version, because now the emulator uses the new savefile system (with the new ".dsv" format).
If you have old savefiles from very old versions (DesmumeX v0.7 or previous, with the old ".sav" format) don't worry, you won't loose your progresses: the first time that you launch those games, DesmumeX v0.85 will convert your old .SAV files into the new .DSV format, and everything should run well.
In the rom list, this DesmumeX v0.85 still keeps the possibility of creating a blank savefile in the rom list pressing the X button, but this SHOULD NOT BE NEEDED NOW. This feature will probably disappear in later versions.
The Nintendo DS has 2 screens. The screen of below can be touched with a digital pen named "Stylus". In DesmumeX, I have implemented both the physical buttons of the DS, and the possibility of "touching" the screen with a virtual "stylus".
* D-pad: It's mapped to the D-pad of the Nintendo DS
* A,B,X,Y buttons: They are mapped to the Triangle, Square, Circle, Cross buttons of the DS.
* Left and right triggers are mapped to the triggers of the DS. Start button is mapped to the Start button of the DS.
Control of the Stylus:
* Left thumbstick: Move the virtual cursor.
* White button: Touch the screen with the virtual cursor. You can even drag and drop, keeping the white button pressed.
* Pressing the right thumbstick changes the color of the cursor.
* Pressing the left thumbstick toggles if we want to display the amount of free memory, and the frames per second.
If you don't need the Stylus, you can move the cursor down below the screen, and it will disappear. Move it up, and it will appear again.
Change of screen:
* Black button: Changes the screen to be displayed on the TV. We can toggle between seeing both 2 screens (above and below), only the first screen at full resolution, or only the second screen at full resolution.
Note: Showing only one screen is slightly faster than displaying the 2 screens.
With the BACK button, the configuration menu is displayed. Pressing START + BACK simmultaneously, you will exit to the rom list.
If a game crashes during the gameplay or it is hung, you can try to enable/disable the 3D functionality, or enable/disable the dynamic recompiler. Please, if you find a game that needs to disable the dynamic recompiler to work, let me know. My final goal is that the dynamic recompiler is used all the time. At the moment, I have found that "DK Jungle Climber" needs dynamic recompiler disabled.
If a game is slow, you can play with these options to try to make it playable. For example, first of all I try to put a higher Frameskip. If frameskip is not enough, we can go with the sound: disabling the sound can bring a boost of 20% of speed (depending of the game). If you don't want to disable sound, you can decrease its quality (for example overclocking it, or reducing the number of audio channels) and this can make things speed up too.
Here is a description of the configuration options:
3D funcionality: You can enable or disable it. Disabling it, the emulator can work a bit faster in a few games, although you can loose some things of the game.
Frameskip: There are two options related to Frameskip: a Mode (Auto/Fixed) and a Value. Let's explain this with an example: if you select FIXED frameskip and value=3, the emulator will use a constant value of 3 for the Frameskip. On the other hand, if you select AUTO-frameskip and a value of 3, the emulator will change the value of the frameskip automatically, with a maximum value of 3 (i.e, between 0 and 3) to try to achieve a ratio of 60 frames per second. So, in the "AUTO" mode, you configure a value that is the maximum frameskip that you are going to tolerate.
Besides, the "Auto" option has 3 different choices: you can have auto-frameskip using only even values (0,2,4...), only odd numbers (1,3,5...) or both (0,1,2,3,4...). The "odd" and "even" options are only usefull in a few games that have problems with some frameskip values (for example, if a game only refreshes the screen in odd frames, a frameskip of 1 should be avoided).
Anyways, my advice is forgetting about the "Auto frameskip", because in several games it doesn't work very well, so many times the best choice is using the FIXED frameskip, combined with the "Limit to 60 FPS" option if the game runs too fast.
Pointer speed: We can select the speed that the virtual cursor uses in its movement.
Graphics: We can select if the emulator is going to draw only the screen that we are seeing ("optimized"), or both screens ("everything"). The "optimized" choice is faster, but some games will not refresh the screen properly with this method. If your game does not refresh the screen, try selecting "Graphics: everything".
Sound: You can disable sound (of course this brings the greatest boost) or overclock it. Overclocking x2 has no effect (I still don't know why), overclocking x3 or x4 will reduce the audio quality and boost the emulation. Note that overclocking does not work well with synchronized sound mode, so if you select any overclock value, be sure to select "Sound Mode: Async" in the option below!
Number of audio channels: The DS has 16 audio channels. We can configure to play 16, 8, 4 or only 2 channels. This speeds up things too. There is no "cracking" sound (as in the overclocking option) but you will feel a lack of notes in the played songs.
Sound Mode: There are 3 different sound modes: ASYNC (the sound is NOT synchronized with the emulation), SYNC (the sound IS synchronized with the emulation) and SYNC INTERPOLATED (the sound is synchronized, and also an interpolation is performed to try to make audio smoother). Interpolation makes emulation slightly slower, although in many situations this speed difference is barely noticeable.
If your game sounds bad, consider changing the sound mode. Also, keep in mind that "SYNC" and "SYNC INTERPOLATED" modes don't work well with overclocked sound, so if you selected any overclock value, be sure to choose the ASYNC mode here.
JIT/Dynamic recompiler: This should be ALLWAYS ENABLED, because everything will run faster. Please, if you find a game that needs to disable the dynamic recompiler to run, let me know. If a game runs too fast, you can disable the dynamic recompiler, and it will run slower.
Limit to 60 FPS: This option limits the speed of the emulator, trying to avoid it running too fast. Enable this option if you feel that a game is running too fast, and you will hopefully get proper speed. Obviously, this option is not needed if a game is not running too fast.
There are two methods to limit the framerate: the HCF method, and the Desmume method. The most accurate one is the Desmume method (and it is the default one), so you should allways use it. The HCF method will probably disappear in future releases.
Video mode: You can choose between 480 (low resolution mode), 720p or 1080i video modes. This option cannot be changed during the gameplay.
Language: You can select the firmware language of your Nintendo DS. This is the language that will be used in multi-language games without language selection. What is this? Well, there are 3 kinds of roms:
1) Games with one fixed language: you will allways play in that language.
2) Multi-language games with a language selection menu: the game will display a menu, and you will be able to select your preferred language.
3) Multi-language games WITHOUT language selection menu: the game will be played with the language of your firmware. The "Language" option in the Configuration Options of DesmumeX, is usefull to play these games. One example is the European version of "Professor Layton and the Curious Village".
To install the emulator, simply copy it to your hard disk, and put the roms inside the "roms" folder. Create a "cfg" folder if you want to store config files.
Background logo, music and screenshots
The image of the screen is the logo.jpg one. You can replace it if you want. The background music is the BGM.ogg file, and you can also replace it if you want.
You can put screenshots of your games in the media/artwork/action folder. Some sample screenshots are included. I recommend resizing your screenshots to the same size of these samples (200 pixels height), and they will show very well in the GUI.
Trusty and modified Xbox owners can use the same executables now. The emulator will probably work much better for them. Also, the "Limit to 60 FPS" option may be very usefull if a game runs too fast
Q: Can I use compressed/zipped roms? A: No
Q: The game is running, but the image is frozen! A: Try selecting "Graphics: everything", or selecting a different value for Frameskip. Some games only refresh the screen on odd frames or on even frames. So, if we use an odd value for frameskip and the game refreshes in odd frames, we will not see any change on the screen...
Q: Can I use some software to make the big roms smaller? A: Yes, some programs like "NDSTokyoTrim25Beta2.exe" can make roms a bit smaller.
Q: This game is too slow, even changing the configuration options! A: I'm sorry, this emulator is still not fully optimized. If you want to help to improve this emulator, let me know
Q: This game is too fast! A: Try enabling the "Limit to 60 FPS" option, and the game should work at a proper speed now. If it does not work, then disabling the dynamic recompiler will make things much slower.
Q: I have selected my language in the configuration options, but the game is played using another language! A: You must check that your rom supports the language that you selected. For example, if you want to play in French or Spanish, sometimes you should choose the European version of that game, because the [US] one will probably admit only English.
Thanks to all the people that, during the years, have built an awesome scene for the Xbox: developers, graphic artists, contributors, Xtras creators, admins, moderators... and gamers too!
Thanks to all the people that have helped me in the development of this or any other of my projects: Neobomb, Hyper_Eye, Madmab, Freakdave, weinerschnitzel, XtecuterX73, SPPV,darknoir, bigby, elconejotres, the Surreal64 CE team... And thanks to the people keeping alive the marvelous emuxtras site!
Thanks to the creators of Desmume, and thanks to Yoshihiro for his port of Desmume for PSP, as it was a good reference to start DesmumeX. Thanks to zeromus for his patience while I have been learning about Desmume.
Thanks a lot to the beta testers: darknior, dominater01, elconejotres, NOTTHESAME, froggyskipper, pmaster, tkeely4777, catch_2030, Master13, othello, scorp316, captainsensation, Esppiral, Hardak, SPPV, ganjatron, Johanmus, r27blades, cbagy and xcalibur. Their help has been very important to advance with this emulator.
The sources of the emulator are in the same package, so if anyone wants to see them and try to improve them, it will be very wellcome. You can contact me if you want to do it.
MAMEoXTRAS Contains Coding by: Erik Abair, opcode, luckyMIC, superfro, XPort, bendermike, Ebsy, HK$, IQ_132, gamezfan, destronger, cbagy, And BritneysPAIRS. ----------------------------------------------------------------------
This Is An Update To MameDOX Based On Version 1.1 It contains New Updated Driver Work By IQ_132 BritneysPAIRS And gamezfan Plus Brand Spanking New Skins By destronger and cbagy Thanks to cbagy for lightgun fixes RetroPlay for the new included cleaner Rom Dat File floydthebarber for sharing The Best Of The Best Rompack and tattyfurby for creating all those Art and Sample packs
For help guidance and support Thx alot guys couldn't have done it without you
Additional Thanks to BritneysPairs for the Donkey Kong and Spiders Sample code
Whats new in MameoXtras v1.17
Rumba Lumber (Now Playable) D-Day (Now Playable) Parallel Turn (Now Playable) Hot Chase (Now Playable) Doki Doki Penguin Land (Now Playable) Arch Rivals 8-Way Joystick Version (Now Playable) Puyo Puyo official World Version (Now Playable) Mirax (Now Playable) (No Sound)
New Correct Samples for......
Donkey Kong Donkey Kong 2 Donkey Kong Pauline Edition Donkey Kong Foundry Donkey kong Jr Spiders (Now Has Sample Sound)
Small speedup and graphical improvements in the Supernova based games Cyvern etc etc Fixed Game Speed and improved the controls in Hot Chase (Game Now Playble) Fixed Crosshare Speed in Chiller (Game Now Playable) Fixed Accelerator in Danny Sulivan's Indy Heat (Game Now Playable) Fixed Controls in American Horseshoes (Game Now Playable)
American Horseshoes APB Arkanoid Return of Doh American Speedway Blasteroids Centipede Championship Sprint Chequered Flag Chiller Danny sullivan's Indycar Heat Demolition Derby Discs Of Tron Enduro Racer F1 Exhaust Note Food Fight Hot Chase Hydra Konami GT Milliped Missile Command Night Striker Pole Position Return Of The Jedi Reactor Sinister Space Harrier Super Sprint
All the above games now have far better controls cant believe i missed em during the big control fix project for the 1st ever MAMEoXtras release a couple of years back
Questions & Answers
Q My New Zealand Story Rom No longer Works Why is that?? A A new Rom is required which ive provided in a roms pack just delete tnzs.zip from your roms folder and replace with the new one
Q How do i install this emulator A See below First check your xbox E:\Tdata\4d414d46 folder to make sure there is no previous save file folder inside it If there is it will be called system just remove it before booting MAMEoXtras for the 1st time To install on your Xbox HDD just simply pick your preferred emulator folder and FTP it across
Q My roms dont work A Use the dat provided in romcentre to scan against your romset and make your roms compatable with this emulator
Q Ive used the dat and still my roms wont work A Lucky for you ive upped a copy of my romset to my Repo Folder
Q How do i skip warnings before the games load A In the main menu make sure all skip warning settings are enabled
Q What games does this play A Mame arcade games only
Q Does it play console games A Dont be a daftie
Q Does it play Final Burn Legends Arcade Games A Nope use FBL v1.20
100% LOCK FREE 100% RESTRICTION FREE The Way It Should Be
100% Open Source !!Source Code included in Download!!
This is another update to NES6502's Final Burn Legends.
Final Burn Legends is a port of Final Burn Alpha 2.99.07 to the Xbox. It also includes parts of FBA-XXX Pro 1.29. And some of the latest FBA code currantly 3283 games are supported.
Final burn Legends v1.20 whats New
Added Support for the following games
Congo Bongo Donkey Kong Pauline Edition (Hack) Future Spy Super Zaxxon Zaxxon
With some additional advice from Madmab i have now fixed all the Rom Filtering all Roms sort correctly and wont crash the Emulator also added a new Filter for Data East based games
New FBL Sample Player
Added support for the FBA sample player to FBL this adds 100% sound to the following games.....
Donkey Kong Donkey Kong All hack versions Donkey Kong Jr Congo Bongo Future Spy Galaga New Rally-X Mario Bros (Imperfect sound) Masao (Bootleg of Mario Bros) Rally-X Space Invaders Super Zaxxon Zaxxon
Sorted the Rom Loading in all the clone versions of Galaga so they no longer get stuck in dip on boot
FBA Dev Team Fixes Ported To FBL
IQ_132 kindly handed me some code to fix the palette problems in the zaxxon driver all games now have the correct colours
Created New Marquees For Congo Bongo Future Spy Zaxxon and Super Zaxxon
-Special Thanks to:
IQ_132 For sharing his latest FBA drivers with me and for help and support in adding them to FBL
Dink For sharing with me all his latest FBA code fixes and improvements and for helping me out alot with porting the code to FBL plus help and support to get games up and running which would still be broken in FBL without his advice
Treble Winner i used many of his FBA code additions and fixes in this release
Nes6502 He Ported FBL to the xbox in the 1st place
Madmab For adding the 128mb xbox launching code and NeoGeo Filter code fixes to Final Burn Legends
+T+ For advice and support with adding the "New" Core plus pointing out a few games in need of fixes
BritneysPAIRS for sharing with me the graphical fixes for the Gladiator Road Of The Sword and SVG Spectral Vs Generation plus help and advice with adding the game rotation code
Neil222 For creating the lovely FBL Skin that this Emulator is using
Destronger it was his src i used to build from
SPPV for supplying me with many different FBL src's
Floydthebarber for 128mb game testing
Chaos for game testing
*********************************************************************** *******Remember to refresh your game list in the option screen!!***************** ***********You may want to create your own dat list too.************************ **********Go to option at the dash board and create a dat file******************** *******go to tools in your fbl folder after you've FTP'd to it and run the************* ******************the file in RomCenter or ClrMAME************************** ***********************************************************************
Neko ProjectX is a PC-98 emulator for Xbox (it is a port of the emulator Neko Project II). The PC-98 is a family of Japanese computers, they can have a hard disk and 2 floppy disks units, so this can appear to be a bit complicated to use... but I have made this emulator very simple, so that you don't need to know much things about this machine to be able to play: simply select your game in the rom list, and play. Also, I have replaced the drop-down menu of the original emulator, by a main menu and some shortcuts, more comfortable to manage with a joypad
Several PC-98 games have ADULT CONTENT. Keep in mind that it can be a bad idea to download and test random PC-98 games without having checked if they are adult-rated, especially if you are playing with children.
There are several internet sites where you can check if a game has adult content, like these ones:
Copy the emulator in your hard disk. Roms MUST be placed uncompressed in the "roms" directory. The emulator supports a good amount of formats, both hard disk images and floppy disk images. Here are some of the supported formats, ordered from the best to the worst choice:
1- HDI: This is a hard disk image, it is the easiest format to launch: simply click and play.
2- FDI: This is a floppy disk image. It is easy too, although some games may have several floppy disks images, and you will need to change the disk when the game asks for it.
3- D88: This is a supported format that will work, but you will usually need to do some things to launch it (write some command...) so it is less comfortable.
4- FDD: This format does not work in this emulator... but you can use "Virtual Floppy Image Converter" to convert it to D88 (or to FDI if you are lucky).
This emulator currently supports PC-9801 games. If there is a lot of interest, maybe I can make it accept PC-9821 games in the future, but currently these games (like Doom or Alone in the Dark) are not supported.
HOW TO LAUNCH GAMES
If you want to play a game that has only one file (for example one HDI file, or one FDI file) simply click on it in the rom list, and the game will be launched. Easy, isn't it?
If you want to play a game that has SEVERAL floppy disk images, you must select the FIRST of them. The emulator will automatically mount it in the "Floppy Unit A" of the PC-98 and will run it. If you need to insert another disk during the gameplay, please read the "CHANGING FLOPPY DISKS" section.
Although the PC-98 is a computer and it uses a keyboard, I have mapped the most common keys in all the games to the buttons of our joypads, so we will be able to play several games with the d-pad and the normal buttons
Here is the default mapping (anyways, you will be able to redefine the A,B,X,Y buttons in the main menu, if you need different mappings):
D-pad: It is mapped to the directional keys of the keypad (UP, DOWN, LEFT, RIGHT)
A button: ENTER key B button: ESC key X button: SPACE key Y button: It is mapped by default to 2 keys that are used by several games as the "action key": the 5 of the keypad (used in games like "Columns") and the Z key (used in games like "Rusty").
LEFT ANALOG STICK: It moves the mouse cursor (only usefull in games that use mouse). WHITE button: Left-click with the mouse BLACK button: Right-click with the mouse
TRIGGERS: They control the key latency (you can think about it as the "speed of an autofire feature" or the "speed of the cursor"). Let's see it:
LEFT TRIGGER: Decrease key latency. If you keep pressed a button, it will send less "push" commands per second. Use this if your cursor/controls move very fast, and you are unable to navigate by the menus of a game because options are selected too fast. Very usefull in games with menus like "Columns".
RIGHT TRIGGER: Increase key latency. If you keep pressed a button, it will send more "push" commands per second. Use this if your cursor/controls move very slow. This is very usefull to move the cursor faster in some strategy games like the "Farland Story" ones!!
START: Opens the Main Menu (see "Main Menu" section for more info)
Some usefull shortcuts: LEFT ANALOG STICK CLICK: Insert a new disk in the Floppy Unit A. RIGHT ANALOG STICK CLICK: Insert a new disk in the Floppy Unit B. LEFT TRIGGER + RIGHT TRIGGER: Enter "Typing Mode" START + BACK: Exit to the rom list.
If you need to type some text, or press a key that is not mapped in the normal controls, press LEFT TRIGGER and RIGHT TRIGGER at the same time, and you will enter into "Typing Mode". A virtual Keyboard will appear, and now you can type whatever you want (press with the A button in the keys that you want to type). Exit from the Typing Mode with the B button.
You can open the main menu during the gameplay by pressing START. You can navigate by the menu with the D-pad, select/change options with the A button, and cancel with the B button. These are the options of the main menu:
* Resume: It returns to the gameplay
* Reset: It resets the PC-98.
* Reset with DIP SWITCH 2-8: Some games like "Rusty" or "Destructor" will show you an error message when you launch them, asking you to switch the DIP SW 2-8 (even if the message is in Japanese, you will be able to read these numbers!). If this is the case, go to the main menu and select "Reset with DIP SW 2-8". The PC-98 will restart with this option, and the game will begin.
* Disk in Floppy A: Insert a new floppy disk in Unit A. This is the same that you can do clicking on the left analog stick.
* Disk in Floppy B: Insert a new floppy disk in Unit B. This is the same that you can do clicking on the right analog stick.
* Redefine keys: You can redefine the keys mapped to the buttons A, B, X and Y. Select the button that you want to redefine; then a virtual keyboard is displayed, and you can select a new key to map to that button of the joypad. This is usefull if you are playing a game that uses a key that is not mapped in the default controls.
* Change clock speed: By default, Neko ProjectX emulates a PC-9801 at 10 MHZ. This is good for the main part of the roms, but if you see that a game works very slow or very fast, you can change the clock speed selecting this option and pressing "A" button until you get your desired speed. For example, "Runners High" is a modern game and it needs a fast PC-98, so you will need to put the clock at 40 MHz to get proper speed, while Arkanoid is an old game and it needs a slow PC-98, so you should configure the clock at 2 MHz to avoid the game run too fast. After changing the clock speed, it will be needed to select the "Reset" option to apply this change.
* Mouse speed: It changes the speed of the mouse cursor.
* Save config as INI file: If you select this option, the emulator will save a config "INI" file in the "cfg" folder (a "cfg" folder is needed!) with all your settings related to key mapping, dip switch 2-8, clock speed, and mouse speed. Next times that you start this game, the emulator will automatically select your saved settings.
CHANGING FLOPPY DISKS
OK, so you have a game that has several floppy disk images and you want to play it. You have to select the FIRST of them in the rom list, and the game will begin (the emulator will insert it in the Floppy Unit A). If an error is displayed, you will usually need to insert the SECOND disk on the Floppy Unit B (clicking on the right analog stick) and maybe after that you will need to press a key, or go to the main menu and "Reset".
During the gameplay, sometimes you will be prompted to insert a new disk, and you can do it pressing the left or right analog sticks (depending if you want to insert it in the Floppy Unit A or B).
Please, note that when you press the left or right analog stick to insert a new disk, the emulator will show you the files with a similar name. So, if you have a game with several files, you must make sure that their names are similar (for example "Farland Story 1 - Disk 1", "Farland Story 1 - Disk 2", and so on...
Q: How can I know if a game needs Japanese knowledge? A: Unfortunately, I have not found a site that has this kind of flag for the games, but you can see the screenshots or the genre of the game, to guess it. Please, if you find a site with details about the Japanese knowledge needed for each game, let me know!
Q: Please, tell me a few games playable without Japanese knowledge, and without adult content! A: OK, here are a few: the English translations of the games Farland Story 1, Farland Story 2, Farland Story 3, Farland Story 4, Farland Story 5, Farland Story 6... Do you need more? Well, you can play Columns, Carax'92, Jump Hero, Popful Mail, Prince of Persia (it is in Japanese, but it is playable simply clicking on the first option of the menu), Runners High, Rusty, Car 2 Grand Prix, Dungeon Master, Elvira-Mistress of the Dark, Galaga, Gods, Lemmings, Mety's Snow War, Mole Mole, Net Guardian, Push'n Pop, and many more...
Q: My game displays a weird Japanese error when launched! A: I can suggest two things: first of all, if the error message contains something "similar" to "SW 2 8", go to the main menu and select "Reset with DIP SW 2-8". Second, if you are trying to launch a game that has several floppy disk images, maybe you need to insert the image number 2 in the Floppy Unit B (you can do it pressing the right analog stick) and after that, go to the main menu and select "Reset". If that fails, I'm sorry but I cannot help more, as I don't know Japanese.
Q: How can I launch games with multiple floppy disk images? A: You must select the FIRST of them, and the game will begin (the emulator will insert it in the Floppy Unit A). If an error is displayed, you will usually need to insert the SECOND disk on the Floppy Unit B clicking the right analog stick) and maybe after that you will need to go to the main menu and "Reset". During the gameplay, sometimes you will be prompted to insert a new disk, and you can do it pressing the left or right analog sticks.
Q: My game runs too slow! A: Go to the main menu pressing Start, configure the clock speed at 40 MHz, and choose "Reset"
Q: My game runs too fast! A: Go to the main menu pressing Start, configure the clock speed at 2 MHz, and choose "Reset"
Q: Does this emulator support PC-9821 games like Doom or Alone in the Dark? A: Not yet
I want to say thanks to all the people that helped me in my projects: Neobomb, Hyper_Eye, Madmab, Freakdave, weinerschnitzel, XtecuterX73, SPPV, darknoir, the Surreal64 CE team... Besides, big thanks to all the people that make possible the Xbox scene and the emuxtras project, Neobomb (again!), Wimpy, Waal, Bigby, Madmab, Perr, Mega Man, SPPV... Thank you very much for your work!
Lots of thanks to the kind people of the Tokugawa Corporate Forums who helped me in my first steps with PC-98, mainly Ben, peter_j, Trickless, Ryo Cokey, Don Rumata, DrJones, Starscream the 2nd and Kobushi. And of course, thanks to the creator of the original Neko Project II and all the developers who released variants of it.
The sources of the emulator are in the same package, so if anyone wants to see them and try to improve them, it will be very wellcome. You can contact me if you want to do it.