ndsemu

Status

This emulator is still in DEVELOPMENT PHASE.

Some games work and are playable, others have broken graphics, others crash almost immediately.

What is emulated

• ARM
  • Most opcodes implemented in both ARM and Thumb mode
  • Disassemly for debugging support
  • Correct cycle counting
  • Correct handling of miasligned memory addresses
  • Preliminar JIT (not fully working yet)
• 2D: BG layers
  • Text mode (16/256 colors, scrolling)
  • Affine modes (16bit bgmap, 8bit bitmap, direct bitmap)
  • Different map sizes
  • Priorities
  • Extended palettes
• 2D: OBJ (sprites)
  • Normal sprites
  • Different sizes
  • Extended palettes
  • Bitmaps
  • Affine (rotozoom)
• 2D: advanced modes
  • VRAM display mode
• 2D: misc features
  • Capturing: only basic support (normal BG+OBJ capture)
  • Master brightness
  • Window (OBJ and BG)
  • Color special effects
• 3D: geometry processor
  • Most commands implemented
  • Accurate timing
• 3D: rasterizer
  • Quadrangle splitting
  • Backface culling
  • Triangle rasterization
  • All different texture formats
  • Texture perspective correction
  • Clipping
  • Lighting and materials (with bugs...)
  • Toon shading
• Sound
  • PCM channels
  • Noise

What is NOT emulated

• 2D
  • Mosaic
• 3D
  • Tons of small fixes
  • Light perspective corrections
  • Edge marking
  • Fog
• Sound
  • Capture (also for reverbs)
  • Mic input
• Emulator features
  • Savestates
  • Replays

How to compile

To compile, you must clone into a ndsemu subdirectory:

git clone https://github.com/rasky/ndsemu $GOPATH/src/ndsemu
cd $GOPATH/src/ndsemu
go get
go build

BIOS

You need access to an official NDS BIOS and firmware. Put them within a "bios" subdirectory, like this:

ndsemu
  |---bios
       |---- firmware.bin
       |---- biosnds7.rom
       |---- biodnds9.rom

Run it

At this point, you can just run it with:

./ndsemu <path-to-your-rom-file>