nesemu

A simple, (hopefully) cycle-accurate NES emulator.

Building

Builds with CMake. Requires SDL.

sudo apt install libsdl2-dev
git clone https://github.com/matthew-reynolds/nesemu.git
mkdir nesemu/build
cd nesemu/build
cmake ..
make

Usage

Usage: nesemu [options]... file.nes
  -h --help               print this usage and exit
  -s --save=file.sav      specify the savefile to use. Default {ROMCRC32}.sav
  -o --official           allow unofficial opcodes
  -q --quiet              disable all logging
  -v --verbose[=abceimpw] specify the log levels. If no argument is specified,
                          all messages are displayed. Every level implies all
                          log levels (eg. INFO implies WARNING and ERROR)
                            a = APU DEBUG messages
                            b = bus DEBUG messages
                            c = CPU DEBUG messages
                            e = ERROR messages
                            i = INFO messages
                            m = mapper DEBUG messages
                            p = PPU DEBUG messages
                            w = WARNING messages

  If neither -q nor -v are specified, the default log level of
   INFO|WARNING|ERROR is used.

Controls

NES	Keyboard
D-Pad	Arrow keys
A	Z
B	X
Start	Enter
Select	Space
Reset	R
Volume down	Left bracket [
Volume up	Right bracket ]
Unlimit speed	Tab
Debug: PPU nametable viewer	1
Debug: PPU sprite viewer	2
Debug: PPU pattern table viewer and palette cycle	3