flubbaofward / greenberetds

A Green Beret arcade emulator for Nintendo DS.

GreenBeretDS V0.6.2

This has now been superseded by https://github.com/FluBBaOfWard/K80DS.

This is a Green Beret, Rush'n Attack & Mr. Goemon - Arcade emulator for the NDS. It has bugs in the sprite rendering and no tile priority support. You should still be able to enjoy the game though. =)

How to use

1. Create a "acds" directory either in the root of your card or in the data directory (eg h:\data\acds). This is where settings and save files end up.
2. Now put gberet.zip, rushatck.zip and/or mrgoemon.zip into a folder where you have (arcade) roms.
3. Depending on your flashcart you might have to DLDI patch the emulator.

When the emulator starts, you can either press L+R or tap on the screen to open up the menu (the emulator tries to load Green Beret automagically on startup). Now you can use the cross or touchscreen to navigate the menus, A or double tap to select an option, B or the top of the screen to go back a step.

To select between the tabs use R & L or the touchscreen.

Menu

File

• Load Game: Select a game to load (Green Beret bootleg doesn't work).
• Load State: Load a previously saved state for the currently running game.
• Save State: Save a state for the current game.
• Save Settings: Save the current settings.
• Reset Game: Reset the currently running game.

Options

• Controller:
  • Autofire: Select if you want autofire.
  • Controller: 2P start a 2 player game.
  • Swap A/B: Swap which NDS button is mapped to which arcade button.
• Display:
  • Display: Here you can select if you want scaled or unscaled screenmode. Unscaled mode: L & R buttons scroll the screen up and down.
  • Scaling: Here you can select if you want flicker or barebones lineskip.
  • Gamma: Lets you change the gamma ("brightness").
• Settings:
  • Speed: Switch between speed modes.
    • Normal: Game runs at it's normal speed.
    • 200%: Game runs at double speed.
    • Max: Game runs at 4 times normal speed (might change in the future).
    • 50%: Game runs at half speed.
  • Autoload State: Toggle Savestate autoloading. Automagically load the savestate 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.
  • Powersave 2nd Screen: If graphics/light should be turned off for the GUI screen when menu is not active.
  • Emulator on Bottom: Select if top or bottom screen should be used for emulator, when menu is active emulator screen is allways on top.
  • Autosleep: Doesn't work.
• Debug:
  • Debug Output: Show an FPS meter for now.
  • Disable Background: Turn on/off background rendering.
  • Disable Sprites: Turn on/off sprite rendering.
  • Step Frame: Emulate one frame.
• Dipswitches:
  • Lot of settings for the actual arcade game, difficulty/lives etc.

About

Some dumb info about the game and emulator...

Credits

Huge thanks to Loopy for the incredible PocketNES, without it this emu would
probably never have been made.
Thanks to:
Dwedit for help and inspiration with a lot of things.
Reesy for help with the Z80 emu core.
Nicola Salmoria, for the MAME driver.
More MAME people + Maxim for the SN76496 info.

Fredrik Ahlström

X/Twitter @TheRealFluBBa

http://www.github.com/FluBBaOfWard

greenberetds's Issues

After rename fixes compile fails

EmuMenu.c
/home/demetris/Desktop/Development/GreenBeretDS/arm9/source/Shared/EmuMenu.c: In function 'flickSet':
/home/demetris/Desktop/Development/GreenBeretDS/arm9/source/Shared/EmuMenu.c:793:9: error: 'gFlicker' undeclared (first use in this function); did you mean 'g_flicker'?
793 | gFlicker++;
| ^~~~~~~~
| g_flicker
/home/demetris/Desktop/Development/GreenBeretDS/arm9/source/Shared/EmuMenu.c:793:9: note: each undeclared identifier is reported only once for each function it appears in
/home/demetris/Desktop/Development/GreenBeretDS/arm9/source/Shared/EmuMenu.c:796:17: error: 'gTwitch' undeclared (first use in this function); did you mean 'g_twitch'?
796 | gTwitch = 0;
| ^~~~~~~
| g_twitch
make[2]: *** [/opt/devkitpro/devkitARM/base_rules:85: EmuMenu.o] Error 1
make[1]: *** [Makefile:107: build] Error 2
make[1]: Leaving directory '/home/demetris/Desktop/Development/GreenBeretDS/arm9'
make: *** [Makefile:41: arm9/GreenBeretDS.elf] Error 2