NGPDS

NGPDS
General
Author	Fredrik Ahlström (FluBBa)
Type	Handheld
Version	0.5.7
License	Mixed
Last Updated	2024/01/24
Links
Download
Website
Source

This is a SNK Neogeo Pocket (Color) emulator for the Nintendo DS.

Features

• Should play most games.
• Can save flash ram.

Installation

Note: You will need a bios to be able to save in game.

DLDI patch the emulator for your flashcard.

Create a folder named ngpds in either the root of your flash card or in the data folder.

Then put game/bios files into a folder where you have (NGP) roms.

Max 768 games per folder, filenames must not be longer than 127 chars. You can use zip-files (as long as they use the deflate compression). Caution: Games that require SLOT-2 RAM can not be used with zip-files!

User guide

Currently does not have save states yet.

Note that for NDS/NDS Lite, it can only load games up to 2MB. Also it doesn't run full speed.

Menu

File:

• Load Game - Choose a game to load.
• Load State - Load a previously saved state for the currently running game.
• Save State - Save a state for the current game.
• Load Flash RAM - Load flash ram for the currently running game.
• Save Flash RAM - Save flash ram for the currently running game.
• Save Settings - Save the current settings.
• Reset Game - Reset the currently running game.

Options

Controller:

• Autofire - Select to enable autofire.
• Controller - 2P start a 2 player game.
• Swap A/B - Swap which NDS button is mapped to which arcade button.

Display:

• Mono Palette - You can select the palette for B & W games.
• Gamma - Adjust the gamma/brightness.
• Disable Foreground - Turn on/off foreground rendering.
• Disable Background - Turn on/off background rendering.
• Disable Sprites - Turn on/off sprite rendering.

Machine Settings:

• Language - Select between Japanese and English.
• Machine - Select the emulated machine.
• Half cpu speed - This halves the emulated cpu speed. Can make games faster.
• Change Batteries - Change to new main batteries (AA/LR6).
• Change Sub Battery - Change to a new sub battery (CR2032).
• Cpu speed hacks - Allow speed hacks.
• Half cpu speed - This is not really recommended.
• Bios Settings - Load a real NGP Bios.

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.
• Autosave Settings - 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 always on top.
• Debug Output - Show an FPS meter for now.
• Autosleep - Does not work.

Controls

Menu:

L+R or Touchscreen - Open up menu

D-Pad or Touchscreen - Navigate menus

A or Double tap - Select an option

B or Top of the screen - Go back

R/L or Touchscreen - Switch between tabs

In game:

B - NGP A button

A - NGP B button

Y/Select - Power button

X/Start - Start button

Screenshots

Compatibility

Tested on iDeaS emulator.

Changelog

V0.5.7 2023/01/24

• Added warning for low battery in the NGP.
• Added support for sample playing.
• Fixed IRQ & Micro DMA handling.
• Fixed BG priority updates mid screen (Rockman).
• Fixed start of game from TWiLight.
• Fixed HLE BIOS some more.
• Fixed save states a bit.
• More optimizations.

V0.5.6 2023/12/20

• Added SLOT-2 RAM support.
• Fixed Color/Mono selection.
• Linked NDS battery to NGP battery.
• Optimized cpu core.

V0.5.5 2022/11/05

• Fixed writing to scroll registers.
• Optimized K2GE access.
• Added speedhack for Big Bang Pro Wrestling.
• More games should work without a BIOS.

V0.5.4 2022/10/19

• Optimized Z80 communication.
• Fixed save states.

V0.5.3 2022/10/19

• Fixed save states.

V0.5.2 2022/10/15

• Added new debug menu.
• Added Z80 CPU slow down menu item.
• Added Quit Emulator menu item if supported.
• Better menu traversing.

V0.5.1 2021/10/11

• Fixed timers, interrupts and scrolling.
• Fixed DAA opcode.

V0.5.0 2021/09/29

• Fixed sound mute handling.

V0.4.9 2021/09/28

• Better flash emulation/saving/loading.
• Fixed save/load state.

V0.4.8 2021/09/11

• Added stereo sound.
• Added speed hacks.
• Optimized VRAM transfers a bit.
• Optimized memory accesses a bit.

V0.4.7 2021/08/29

• Various cpu fixes.
• Fixed auto power on/off.

V0.4.6 2021/08/22

• Added a new border on game screen.
• Added new setting to lower emulated cpu speed.
• Tweaked cpu register usage.
• Fixed MULA opcode.

V0.4.5 2021/06/28

• CPU working.
• Memory working.
• Graphics working.
• Sound working.

V0.4.0 2021/05/18

• Started port to Nintendo DS.

V0.3.0 2008/10/01

• Fixed copy protection in "Metal Slug 2" (SNK logo in VRAM).
• Fixed control problem in "Rockman Battle & Fighters" (MIRR opcode).
• Fixed background glitch in "Memories of Pure" (HCount register).
• Fixed problems with DMA probably affecting many games.

V0.2.0 2008/09/04

• Added speedhacks for a lot of games.
• Added emulation of batteries & sub battery.
• Added RTC alarm.
• Added power button (SELECT).
• Added D button (R) (check "Doko Demo Mahjong").
• Fixed a couple of cpu bugs affecting "Metal Slug 1" and a couple of other games.

V0.1.0 2008/07/04

• Initial GBA release (NGPAdvance).

V0.0.0 2008/04/02

• Started Coding.

Credits

Huge thanks to Loopy for the incredible PocketNES, without it this emu would probably never have been made.

Thanks to:

• Flavor & Koyote for NGP info.
• Dwedit for help and inspiration with a lot of things.

External links

• GitHub - http://www.github.com/FluBBaOfWard
• GBAtemp - https://gbatemp.net/download/ngpds.37181