Bandai - Wswan (MesenCE)¶

Background¶

A port of MesenCE to the libretro API. This emulator is a combined effort of the original author, Sour, and the NESdev community. It is extremely accurate and covers a ton of great home gaming consoles. It even handles Super Game Boy through the libretro 'subsystem' mechanic.

The Mesen2 core has been authored by

M. Bibaud (aka Sour) and NESdev community

The Mesen2 core is licensed under

GPLv3

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

Extensions¶

Content that can be loaded by the Mesen2 core have the following file extensions:

.nes
.fds
.unf
.unif
.sfc
.smc
.gb
.gbc
.gba
.pce
.sgx
.cue
.sms
.gg
.ws
.wsc

RetroArch database(s) that are associated with the Mesen2 core:

Features¶

Frontend-level settings or features that the Mesen2 core respects.

Feature	Supported
Saves	✔
States	✔
Rewind	✔
Netplay	✔
Core Options	✔
Memory Monitoring (achievements)	✔
RetroArch Cheats	✔
Controls	✔
Subsystem	✔
Disk Control	✕

Directories¶

The Mesen2 core's library name is 'Mesen2'

Core options¶

The Mesen2 core has the following option(s) that can be tweaked from the core options menu. The default setting is bolded.

System¶

System settings (region, RAM, overclock)

Region [mesen_region] (Auto|NTSC|PAL|Dendy)

Select NES region
RAM Power-On State [mesen_ramstate] (All 0s|All 1s|Random)

Default power-on state for RAM
Overclock [mesen_overclock] (None|Low|Medium|High|Very High)

Overclock the NES CPU
Overclock Type [mesen_overclock_type] (Before NMI|After NMI)

When to apply overclock
FDS Auto Insert [mesen_fdsautoinsertdisk] (Off|On)

Automatically insert disks on FDS games
FDS Fast Forward [mesen_fdsfastforwardload] (Off|On)

Fast forward while FDS is loading
Allow Invalid Input [mesen_allow_invalid_input] (Off|On)

Allow invalid input combinations
Randomize Mapper Power-On [mesen_randomize_mapper_power_on_state] (Off|On)

Randomize mapper power-on state (for testing)
Randomize CPU/PPU Alignment [mesen_randomize_cpu_ppu_alignment] (Off|On)

Randomize CPU/PPU alignment (for testing)
Disable Frame Skipping [mesen_snes_disable_frame_skipping] (Off|On)

Disable SNES frame skipping
Strict Board Mappings [mesen_snes_enable_strict_board_mappings] (Off|On)

Use strict SNES board mappings
Randomize Power-On [mesen_snes_randomize_power_on_state] (Off|On)

Randomize the SNES power-on state
Game Boy Model [mesen_gameboy_model] (Auto (Best)|Auto (GBC)|Auto (SGB)|Auto (GB)|Game Boy|Game Boy Color|Super Game Boy)

Select the Game Boy model to emulate
Skip Boot Screen [mesen_gba_skip_boot_screen] (Off|On)

Skip the GBA boot screen
Disable Frame Skipping [mesen_gba_disable_frame_skipping] (Off|On)

Disable GBA frame skipping
Save Type [mesen_gba_save_type] (Auto Detect|None|SRAM|EEPROM 512|EEPROM 8192|Flash 64|Flash 128)

Select the GBA save type
RTC Type [mesen_gba_rtc_type] (Auto Detect|Enabled|Disabled)

Select the GBA RTC emulation mode
Console Type [mesen_pce_console_type] (Auto|PC Engine|SuperGrafx|TurboGrafx)

Select the PC Engine console model
CD-ROM Type [mesen_pce_cdrom_type] (CD-ROM|Super CD-ROM|Arcade)

Select the PCE CD-ROM emulation type
Disable Frame Skipping [mesen_pce_disable_frame_skipping] (Off|On)

Disable PCE frame skipping
Model [mesen_ws_model] (Auto|Monochrome|Color|SwanCrystal|PocketChallenge)

Select the WonderSwan model

Video¶

Video settings (palette, filters, overscan)

Palette [mesen_palette] (Default|Composite Direct (by FirebrandX)|NES Classic|Nestopia RGB|Original Hardware|PVM Style|Sony CXA2025AS|Unsaturated v6|YUV v3|Wavebeam|Custom)

Select color palette
NTSC Filter [mesen_ntsc_filter] (Disabled|Composite (Blargg))

NTSC video filter
PAL Borders [mesen_enable_pal_borders] (Off|On)

Show borders in PAL mode
Color Correction [mesen_snes_color_correction] (None|NTSC Black Level|Deep Black Boost)

Select SNES color correction mode
High-Res Blend Mode [mesen_snes_high_res_blend_mode] (None|Blend All|Blend Even/Odd)

Select the SNES high-resolution blend mode
Deinterlace Mode [mesen_snes_deinterlace_mode] (Weave|Bob Blend|Bob|Current Field)

Select the SNES deinterlace mode
Force Fixed Resolution [mesen_snes_force_fixed_resolution] (Off|On)

Force a fixed SNES resolution
Blend Frames [mesen_gameboy_blend_frames] (On|Off)

Blend Game Boy frames for a smoother image
Adjust Colors [mesen_gameboy_adjust_colors] (On|Off)

Enable Game Boy color correction
Hide SGB Borders [mesen_gameboy_hide_sgb_borders] (Off|On)

Hide Super Game Boy borders
Blend Frames [mesen_gba_blend_frames] (On|Off)

Blend GBA frames
Adjust Colors [mesen_gba_adjust_colors] (On|Off)

Enable GBA color correction
Force Fixed Resolution [mesen_pce_force_fixed_resolution] (Off|On)

Force a fixed pixel resolution
Use SG Palette [mesen_sms_use_sg_palette] (Off|On)

Use the Sega Game Gear palette
GG Blend Frames [mesen_sms_gg_blend_frames] (On|Off)

Blend frames on the Game Gear display
Auto Rotate [mesen_ws_auto_rotate] (Off|On)

Rotate the WonderSwan display automatically
Blend Frames [mesen_ws_blend_frames] (Off|On)

Blend WonderSwan frames
Adjust Colors [mesen_ws_lcd_adjust_colors] (Off|On)

Adjust colors for the WonderSwan LCD
Show Icons [mesen_ws_lcd_show_icons] (Off|On)

Show the WonderSwan status icons

Audio¶

Audio settings (filters, channels, sample rate)

Fake Stereo [mesen_fake_stereo] (Off|On)

Enable fake stereo effect
Reduce Triangle Popping [mesen_mute_triangle_ultrasonic] (On|Off)

Mute Triangle channel ultrasonic frequencies
Reduce DMC Popping [mesen_reduce_dmc_popping] (On|Off)

Reduce popping on DMC channel
Swap Duty Cycles [mesen_swap_duty_cycle] (Off|On)

Swap Square channel duty cycles
Disable Noise Mode [mesen_disable_noise_mode_flag] (Off|On)

Disable Noise channel mode flag
Sample Rate [mesen_audio_sample_rate] (48000 Hz|96000 Hz|11025 Hz|22050 Hz|44100 Hz)

Audio output sample rate
Use HuC6280 Audio [mesen_pce_use_huc6280_audio] (On|Off)

Use the HuC6280 audio engine
FM Audio [mesen_sms_fm_audio] (On|Off)

Enable FM audio on SMS systems
Audio Mode [mesen_ws_audio_mode] (Headphones|Speakers)

Select the WonderSwan audio output mode

Enhancements¶

Enhancement options (HD packs, sprite limit)

Hide BG Layer 1 [mesen_snes_hide_bg_layer_1] (Off|On)

Hide SNES background layer 1
Hide BG Layer 2 [mesen_snes_hide_bg_layer_2] (Off|On)

Hide SNES background layer 2
Hide BG Layer 3 [mesen_snes_hide_bg_layer_3] (Off|On)

Hide SNES background layer 3
Hide BG Layer 4 [mesen_snes_hide_bg_layer_4] (Off|On)

Hide SNES background layer 4
Hide Sprites [mesen_snes_hide_sprites] (Off|On)

Hide SNES sprite rendering
Remove Sprite Limit [mesen_snes_remove_sprite_limit] (Off|On)

Remove the SNES sprite limit
Disable Background [mesen_gameboy_disable_background] (Off|On)

Disable Game Boy background rendering
Disable Sprites [mesen_gameboy_disable_sprites] (Off|On)

Disable Game Boy sprite rendering
Remove Sprite Limit [mesen_gameboy_remove_sprite_limit] (Off|On)

Remove the Game Boy sprite limit
Disable Sprites [mesen_gba_disable_sprites] (Off|On)

Disable GBA sprite rendering
Disable Background [mesen_gba_disable_background] (Off|On)

Disable GBA background rendering
Hide BG Layer 1 [mesen_gba_hide_bg_layer_1] (Off|On)

Hide GBA background layer 1
Hide BG Layer 2 [mesen_gba_hide_bg_layer_2] (Off|On)

Hide GBA background layer 2
Hide BG Layer 3 [mesen_gba_hide_bg_layer_3] (Off|On)

Hide GBA background layer 3
Hide BG Layer 4 [mesen_gba_hide_bg_layer_4] (Off|On)

Hide GBA background layer 4
Disable Sprites [mesen_pce_disable_sprites] (Off|On)

Disable sprite rendering on PCE
Disable VDC2 Sprites [mesen_pce_disable_sprites_vdc2] (Off|On)

Disable VDC2 sprite rendering
Disable Background [mesen_pce_disable_background] (Off|On)

Disable background rendering on PCE
Disable VDC2 Background [mesen_pce_disable_background_vdc2] (Off|On)

Disable VDC2 background rendering
Remove Sprite Limit [mesen_pce_remove_sprite_limit] (Off|On)

Remove the PCE sprite limit
Disable Sprites [mesen_sms_disable_sprites] (Off|On)

Disable sprite rendering on SMS
Disable Background [mesen_sms_disable_background] (Off|On)

Disable background rendering on SMS
Remove Sprite Limit [mesen_sms_remove_sprite_limit] (Off|On)

Remove the SMS sprite limit
Disable Sprites [mesen_ws_disable_sprites] (Off|On)

Disable WonderSwan sprite rendering
Sprites Enabled [mesen_sprites_enabled] (On|Off)

Enable sprite rendering
Background Enabled [mesen_background_enabled] (On|Off)

Enable background rendering
Game Genie Bus Conflicts [mesen_disable_game_genie_bus_conflicts] (Off|On)

Disable Game Genie bus conflicts
Sprite Limit [mesen_sprite_limit] (Normal|Adaptive|Off)

8-sprite scanline limit

Input¶

Input controller settings

Turbo Speed [mesen_controllerturbospeed] (Fast|Very Fast|Disabled|Slow|Normal)

Turbo button speed

Controllers¶

Port 1¶

Auto
Standard Controller
Zapper
Power Pad
Arkanoid
SNES Controller
SNES Mouse

Port 2¶

Auto
Standard Controller
Zapper
Power Pad
Arkanoid
SNES Controller
SNES Mouse

Port 3¶

Auto
Standard Controller

Port 4¶

Auto
Standard Controller

Port 5¶

Auto
Arkanoid
Ascii Turbo File
Bandai Hypershot
Battle Box
Exciting Boxing
Family Trainer
Four Player Adapter
Hori Track
Konami Hypershot
Pachinko
Partytap
Oeka Kids Tablet