Nintendo - NES / Famicom (QuickNES)Link

BackgroundLink

Nes_Emu, the core NES emulator library used by QuickNES, began as a very simple NES emulator sometime in 2004. It was based on the 6502 CPU core and APU sound core used in the Game_Music_Emu sound engine.

The QuickNES core has been authored by

  • blargg
  • kode54

The QuickNES core is licensed under

A summary of the licenses behind RetroArch and its cores have found here.

CompatibilityLink

Game Issue
Burai Fighter Softlocks when entering a level. Confirmed issue. MMC3 incompatible.
Family Circuit '91 Crashes on start. Unsupported Mapper 210.
Huge Insect No enemies spawn. Mapper 3 confirmed issue. Unemulated bus conflict handling.
Skull & Crossbones Crashes on start. Unsupported Mapper.

ExtensionsLink

Content that can be loaded by the QuickNES core have the following file extensions:

  • .nes

RetroArch database(s) that are associated with the QuickNES core:

FeaturesLink

Frontend-level settings or features that the QuickNES core respects.

Feature Supported
Restart
Screenshots
Saves
States
Rewind
Netplay
Core Options
RetroAchievements
RetroArch Cheats
Native Cheats
Controls
Remapping
Multi-Mouse
Rumble
Sensors
Camera
Location
Subsystem
Softpatching
Disk Control
Username
Language
Crop Overscan
LEDs

DirectoriesLink

The QuickNES core's library name is 'QuickNES'

The QuickNES core saves/loads to/from these directories.

Frontend's Save directory

File Description
*.srm Cartridge battery save

Frontend's State directory

File Description
*.state# State

Geometry and timingLink

  • The QuickNES core's core provided FPS is 60
  • The QuickNES core's core provided sample rate is 44100 Hz
  • The QuickNES core's base width is 256
  • The QuickNES core's base height is 240
  • The QuickNES core's max width is 256
  • The QuickNES core's max height is 240
  • The QuickNES core's core provided aspect ratio is 4/3 when the 'Aspect Ratio' core option is set to 4/3
  • The QuickNES core's core provided aspect ratio is 8/7 when the 'Aspect Ratio' core option is set to 8/7

Core optionsLink

The QuickNES core has the following option(s) that can be tweaked from the core options menu. The default setting is bolded.

Settings with (Restart) means that core has to be closed for the new setting to be applied on next launch.

  • Allow Opposing Directions [quicknes_up_down_allowed] (disabled|enabled)

    Enabling this will allow pressing / quickly alternating / holding both left and right (or up and down in some games) directions at the same time.

    This may cause movement based glitches to occur in certain games.

    It's best to keep this core option disabled.

  • Aspect ratio [quicknes_aspect_ratio_par] (PAR|4:3)

    Configure QuickNES's core provided aspect ratio.

  • Show horizontal overscan [quicknes_use_overscan_h] (enabled|disabled)

    Set this to disabled to crop out (horizontally) the potentially random glitchy video output that would have been hidden by the bezel around the edge of a standard-definition television screen.

  • Show vertical overscan [quicknes_use_overscan_v] (disabled|enabled)

    Set this to disabled to crop out (vertically) the potentially random glitchy video output that would have been hidden by the bezel around the edge of a standard-definition television screen.

  • No sprite limit [quicknes_no_sprite_limit] (enabled|disabled)

    Reduce sprite flickering when enabled.

JoypadLink

User 1 - 2 input descriptors RetroPad Inputs
B
Select
Start
D-Pad Up
D-Pad Down
D-Pad Left
D-Pad Right
A

Nintendo - Nintendo Entertainment SystemLink