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NES-GO

Another NES Emulator implemented in Golang

Dependencies

MacOS

brew install glfw
brew install portaudio

Linux/Unix Based Systems or Windows

Refer to https://www.glfw.org/ And http://www.portaudio.com/

Usage

go run cmd/nesgo/main.go <path-to-rom>

Key bindings

Currently the keys are statically mapped, dynamic mapping through a configuration file will be supported in the future. Only the first controller is supported.

Controller 1 (keyboard)

  • A - N
  • B - M
  • Up/Down/Left/Right - WSAD
  • Start - Enter
  • Select - Backspace

Special keys

  • E - enable/disable emulation
  • L - enable/disable disassembler in stdout
  • Space - Step one frame
  • O - Cycle through: PPU rendered output - Pattern table 1 - Pattern table 2
  • P - Cycle through palette index 0-7 (when showing pattern tables)

Progress:

  • - CPU implementation
  • - Basic cartridge / mapper implementation
  • - GUI framework: glfw/gl
  • - Basic controller support
  • - PPU background rendering
  • - PPU foreground rendering (sprites)
  • - Framework for audio
  • - APU (audio processing unit)
  • - Multiple controller mappings
  • - Dynamic controller mapping
  • - Save state
  • - Battery support
  • - More mappers... (contributions are appreciated)

Notes:

  • The code is set up as simple as possible, depicting all steps in emulation, specially when rendering the image in the PPU, optimisations are omitted intentionally

References:

Special thanks to https://github.com/OneLoneCoder and his YouTube channel, this implementation it is based on his hard work creating such an amazing step-by-step guide to implement this emulator

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A Nes Emulator implemented in Golang

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