SwanGBA V0.6.7

This is a Bandai WonderSwan (Color/Crystal) & Benesse PocketChallenge V2 emulator for the Nintendo GBA.

How to use

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.

Menu

File

• Load Game: Select a game to load.
• Load NVRAM: Load non volatile ram (EEPROM/SRAM) for the currently running game.
• Save NVRAM: Save non volatile ram (EEPROM/SRAM) for the currently running game.
• Save Settings: Save the current settings (and internal EEPROM).
• Reset Game: Reset the currently running game.

Controller

• Autofire: Select if you want autofire.
• Swap A-B: Swap which GBA button is mapped to which WS button.

Display

• 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.

Settings

• Speed: Switch between speed modes.
  • Normal: Game runs at it's normal speed.
  • 200%: Game runs at double speed.
  • Max: Games can run up to 4 times normal speed (might change).
  • 50%: Game runs at half speed.
• Autoload State: Toggle Savestate autoloading. Automagically load the savestate associated with the selected game.
• Autoload NVRAM: Toggle EEPROM/SRAM autoloading. Automagically load the EEPROM/SRAM associated with the selected game.
• 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.
• Overclock EWRAM: Changes the waitstates on EWRAM between 2 and 1, might damage your GBA and uses more power, around 10% speedgain. Use at your own risk!
• Autosleep: Change the autosleep time, also see Sleep.

Machine

• 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.

Debug

• 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.

About

Some info about the emulator and game...

Sleep

Put the GBA into sleepmode. START+SELECT wakes up from sleep mode (activated from this menu or from 5/10/30 minutes of inactivity).

Controls

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.

Games

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, speed too fast.

There are a couple of games that have visual glitches.

• 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.
• Romancing Sa-Ga, sprites overlap text boxes.
• Sorobang, needs all 1024 tiles in 4color mode.
• WonderSwanColor BIOS, needs all 1024 tiles in 4color mode.

Credits

Huge thanks to Loopy for the incredible PocketNES, without it this emu would probably never have been made.
Thanks to:
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
asie for info and inspiration.
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

Twitter @TheRealFluBBa

http://www.github.com/FluBBaOfWard