PC Engine SuperGrafx

The PC Engine SuperGrafx (a.k.a. PCエンジンスーパーグラフィックス, Pī Shī Enjin SūpāGurafikkusu, PC Engine 2 or simply “SuperGrafx”) is a fourth-generation videogame console developed by NEC. It was released in Japan on December 1989 and France on May 1990.

Technically the successor to the PC Engine, and the first console by NEC to be “true” 16-bit instead of partially using 16-bit components. It was primarily marketed as an upgrade to the existing PC Engine instead of a replacement, compatible with all the already existing PC Engine HuCards in addition to its own. It was also compatible with the CD-ROM² add-on, although no CD-based games were produced that took advantage of the SuperGrafx's superior hardware.

The hardware itself was rushed to the market, releasing several months before its intended release date of 1990.

This system scrapes metadata for the “supergrafx” group and loads the supergrafx set from the currently selected theme, if available.

Shares BIOS requirements with the PC Engine CD-ROM²/TurboGrafx-CD.

This BIOS file is required.

MD5 checksum Share file path Description
38179df8f4ac870017db21ebcbf53114 bios/syscard3.pce Super CD-ROM2 System V3.xx

These BIOS files can also work, however they are known to have compatibility issues with certain games:

MD5 checksum Share file path Description
bios/syscard2.pce CD-ROM System V2.xx
bios/syscard1.pce CD-ROM System V1.xx
bios/gexpress.pce Game Express CD Card

Place your Supergrafx ROMs in /userdata/roms/supergrafx.

To load CD-ROM content, a CUE sheet is required. CUE sheets can be recovered if lost.

The preferred format for disc compression is CHD. CHDs, by their nature, include the CUE sheet information.

RetroArch (formerly SSNES), is a ubiquitous frontend that can run multiple “cores”, which are essentially the emulators themselves. The most common cores use the libretro API, so that's why cores run in RetroArch in Batocera are referred to as “libretro: (core name)”. RetroArch aims to unify the feature set of all libretro cores and offer a universal, familiar interface independent of platform.

RetroArch configuration

RetroArch offers a Quick Menu accessed by pressing [HOTKEY] + South button (B SNES) which can be used to alter various things like RetroArch and core options, and controller mapping. Most RetroArch related settings can be altered from Batocera's EmulationStation.

Standardized features available to all libretro cores: supergrafx.videomode, supergrafx.ratio, supergrafx.smooth, supergrafx.shaders, supergrafx.pixel_perfect, supergrafx.decoration, supergrafx.game_translation

ES setting name batocera.conf_key Description ⇒ ES option key_value
Settings that apply to all cores of this emulator
GRAPHICS API supergrafx.gfxbackend Choose which graphics API library to use. Vulkan is better, when supported.
⇒ OpenGL opengl, Vulkan vulkan.
AUDIO LATENCY supergrafx.audio_latency In milliseconds. Can reduce crackling/cutting out.
⇒ 256 256, 192 192, 128 128, 64 64, 32 32, 16 16, 8 8.
THREADED VIDEO supergrafx.video_threaded Improves performance at the cost of latency and more video stuttering.
⇒ On true, Off false.

libretro: Mednafen_SuperGrafx

A libretro port of Mednafen's PCE-Fast core.

libretro: Mednafen_SuperGrafx configuration
ES setting name batocera.conf_key Description ⇒ ES option key_value
Settings that apply to all systems this core supports
REDUCE SPRITE FLICKERING global.sgx_nospritelimit Enhancement. Remove the sixteen sprites per line limit.
⇒ Off disabled, On enabled.

The remaining settings can be adjusted from RetroArch's Quick Menu ([HOTKEY] + South button (B SNES) in-game) → Options.

Here are the default SuperGrafx's controls shown on a Batocera Retropad:

RetroPad User 1 - 5 input descriptors PCE Joypad 2-button PCE Joypad 6-button
East button (A SNES) I I I
South button (B SNES) II II II
West button (Y SNES) III II Turbo On/Off III
North button (X SNES) IV I Turbo On/Off IV
[SELECT] Select Select Select
[START] Run Run Run
D-Pad Up D-Pad Up D-Pad Up D-Pad Up
D-Pad Down D-Pad Down D-Pad Down D-Pad Down
D-Pad Left D-Pad Left D-Pad Left D-Pad Left
D-Pad Right D-Pad Right D-Pad Right D-Pad Right
[L1] V V
[R1] VI VI
[R2] Mode Switch Mode Switch Mode Switch
[L3] Alternate II Turbo On/Off
[R3] Alternate I Turbo On/Off

For further troubleshooting, refer to the generic support pages.

  • systems/supergrafx.txt
  • Last modified: 20 months ago
  • by atari