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WonderSwan Color

WonderSwan Color icon WonderSwan Color logo

Overview

Bandai’s WonderSwan Color (2000) is a Japan-only handheld with a color LCD and 64 KB of RAM. REG-Linux exposes the wswanc system group and runs the games via libretro: mednafen_wswan.

Technical specifications

  • CPU: NEC V30MZ (16-bit) at 3.072 MHz with onboard jumpers for color mode.
  • Memory: 64 KB RAM and 8 KB video RAM shared with the display circuitry.
  • Display: 224×144 color panel showing up to 241 colors from a 4096 palette.
  • Sound: Mono DAC with two square-wave channels and noise, plus simple stereo headphone output.

Quick reference

  • ROM folder: /userdata/roms/wswanc
  • Accepted formats: .wsc, .zip, .7z
  • Emulator: libretro: mednafen_wswan
  • System group: wswanc

ROMs

Place .wsc dumps (or zipped archives containing them) into /userdata/roms/wswanc. Keep archives flat so the core can detect the ROM immediately.

Emulator options

Use [HOTKEY] + south face button to open the RetroArch Quick Menu and adjust wswanc.videomode, wswanc.ratio, wswanc.shaders, wswanc.audio_latency, and wswanc.video_threaded.

mednafen_wswan also exposes Game Boy-style options, enabling you to rotate the screen or toggle special palettes (SGB overlays) if needed.

Controls

The default overlay depicts the WonderSwan pad (D-pad and four buttons). Adjust any mapping through /remapping_controls_per_emulator when you prefer a different layout.

Troubleshooting

  • Toggle the rotation option when the display orientation looks stretched.
  • Increase wswanc.video_threaded if frames drop when using shaders, then disable when smoother output is required.
  • Consult the generic support pages if a ROM refuses to load after verifying the archive structure.