This is a Bandai WonderSwan (Color/Crystal) & Benesse PocketChallenge V2 emulator for the Nintendo GBA.
Use the HTML Builder to add roms and bioses, always add the bios files before any normal roms. When the emulator starts, you press L+R to open up the menu. Now you can use the cross to navigate the menus, A to select an option, B to go back a step.
- Load Game: Select a game to load.
- Load State: Load state for the currently running game.
- Save State: Save state for the currently running game (only mono yet).
- Save NVRAM: Save non volatile ram (EEPROM/SRAM) for the currently running game.
- Manage NVRAM: Delete unwanted NVRAM files.
- Manage States: Delete unwanted state files.
- Save Settings: Save the current settings (and internal EEPROM).
- Reset Console: Reset the console.
- Autofire: Select if you want autofire.
- Swap A-B: Swap which GBA button is mapped to which WS button.
- Gamma: Lets you change the gamma ("brightness").
- Contrast: Lets you change the contrast.
- B&W Palette: Here you can select the palette for B & W games.
- Border: Lets you change between black & WS frame.
- Machine: Select the emulated machine.
- Change Battery: Change to a new main battery (AA/LR6).
- Clear internal EEPROM: Reset internal EEPROM.
- Headphones: Select whether heaphones are connected or not.
- Cpu speed hacks: Allow speed hacks.
- Half Cpu Speed: Just half the emulated cpu speed.
- Sound: Turn sound emulation on/off.
- Speed: Switch between speed modes.
- Normal: Game runs at it's normal speed.
- 200%: Game can run up to double speed.
- Max: Games can run up to 4 times normal speed.
- 50%: Game runs at half speed.
- Autoload State: Toggle Savestate autoloading. Automatically load the savestate associated with the selected game.
- Autoload NVRAM: Toggle EEPROM/SRAM autoloading. Automatically load the NVRAM associated with the selected game.
- Autosave NVRAM: Toggle NVRAM autosaving. Automatically save the NVRAM when entering the menu.
- Autosave Settings: This will save settings when leaving menu if any changes are made.
- Autopause Game: Toggle if the game should pause when opening the menu.
- EWRAM Overclock: Changes the waitstates on EWRAM between 2 and 1, uses more power, around 10% speedgain. Doesn't work on Gameboy Micro, might damage your GBA. Use at your own risk!
- Autosleep: Change the autosleep time, also see Sleep.
- Debug Output: Show FPS and logged text.
- Disable Foreground: Turn on/off foreground rendering.
- Disable Background: Turn on/off background rendering.
- Disable Sprites: Turn on/off sprite rendering.
- Step Frame: Emulate one frame.
Some info about the emulator and game...
Put the GBA into sleepmode. START+SELECT wakes up from sleep mode (activated from this menu or from 5/10/30 minutes of inactivity).
Tries to reset the Flashcart and reboots the GBA.
Start is mapped to WS Start. Select is mapped to WS Sound.
In horizontal games:
- D-pad is mapped to WS X1-X4.
- A & B buttons are mapped to WS A & B.
- Holding L maps the D-pad to WS Y1-Y4.
In vertical games:
- D-pad is mapped to WS Y1-Y4.
- A, B are mapped to WS X3,X4.
There are 2 games that I know of that has serious problems.
- Chou Denki Card Game: You need to initialize NVRAM, this is the last item on the first page (初期化).
- Mahjong Touryuumon, emulated speed too fast.
There are a couple of games that have visual glitches.
- Dicing Knight. shadows are in front of player.
- Digimon - Anode Tamer & Cathode Tamer, missing background gradient in battles.
- Final Fantasy, Sprites show in dialog windows.
- Final Lap 2000, incorrect road colors.
- Final Lap Special - GT & Formula Machine, incorrect road colors.
- From TV Animation One Piece - Grand Battle Swan Colosseum, incorrect sky color.
- Makaimura, first boss sprites are glitchy, gargoyles in intro should not show up on the right.
- Neon Genesis Evangelion - Shito Ikusei, sprites overlap avatar images.
- Rockman & Forte - Mirai Kara no Chousensha, no background fade in intro.
- Romancing Sa-Ga, sprites overlap text boxes.
- Sorobang, needs all 1024 tiles in 4color mode.
- WonderSwanColor BIOS, needs all 1024 tiles in 4color mode.
I've made a few test programs for the WonderSwan to be able to really make sure it is as accurate as possible.
- WSCPUTest - Tests functions of the NEC V30MZ CPU instructions.
- WSTimingTest - Tests timing of the NEC V30MZ CPU instruction.
- WSHWTest - Tests other HW of the WS SOC.
- KarnakTest - Tests the Karnak mapper in certain cartridges.
Other test programs I have used to get better accuracy.
- WS-Test-Suite - Lots of small tests.
- RTC Test Tests the RTC in certain cartridges.
Huge thanks to Loopy for the incredible PocketNES, without it this emu would probably never have been made.
Thanks to:
asie for info and inspiration. https://ws.nesdev.org/wiki/WSdev_Wiki
Ed Mandy (Flavor) for WonderSwan info & flashcart. https://www.flashmasta.com
Koyote for WonderSwan info.
Alex Marshall (trap15) for WonderSwan info. http://daifukkat.su/docs/wsman/
Guy Perfect for WonderSwan info http://perfectkiosk.net/stsws.html
Godzil for the boot rom stubs. https://github.com/Godzil/NewOswan
lidnariq for RTC info.
plasturion for some BnW palettes.
Dwedit for help and inspiration with a lot of things.
Fredrik Ahlström
https://bsky.app/profile/therealflubba.bsky.social
https://www.github.com/FluBBaOfWard
X/Twitter @TheRealFluBBa