Mednafen

WonderSwan Documentation

Last updated March 24, 2014
Valid as of 0.9.33.2

Table of Contents:

Introduction

Mednafen's WonderSwan (Color) emulation is based off of Cygne, modified with bug fixes and to add sound emulation(though the noise channel emulation is currently flawed).

WSR(WonderSwan sound rip format) playback is supported.


Default Key Assignments

The "X Cursor" buttons are usually used for directional control with horizontal-layout games, while the "Y Cursor" buttons are usually used for directional control with vertical-layout games. Additionally, the opposite buttons are often treated as action buttons...because of this, you must *NOT* configure the X cursor buttons and Y cursor buttons to the same real buttons or keys. Games will not behave well at all if you do.

Key(s):Action:Configuration String:
ALT + SHIFT + 1Activate in-game input configuration process for WonderSwan pad.input_config1

Key:Action/Button:
Keypad 2B
Keypad 3A
Enter/ReturnStart
WUp, X Cursors
SDown, X Cursors
ALeft, X Cursors
DRight, X Cursors
UPUp, Y Cursors
DOWNDown, Y Cursors
LEFTLeft, Y Cursors
RIGHTRight, Y Cursors

Game-specific Emulation Hacks

Title:Description:Source code files affected:
Detective ConanPatch to work around lack of pipeline/prefetch emulation.src/wswan/main.cpp

Settings Reference

Caution: Any settings that change emulation behavior as seen from the emulated game are shown with the setting name bolded in the table. One should be conscious of these settings if one has changed them from the default values when using network play or movies, as they can cause desychronizations if not set the same among hosts(or between the recording emulator and the playing emulator).

Setting:Value Type:Possible Values:Default Value:Description:
wswan.bdayinteger1 through 3123Birth Day
 
wswan.bloodenuma
b
o
ab
OBlood Type
  • a - A

  • b - B

  • o - O

  • ab - AB
 
wswan.bmonthinteger1 through 126Birth Month
 
wswan.byearinteger0 through 99991989Birth Year
 
wswan.languageenumjapanese
english
englishLanguage games should display text in.

The only game this setting is known to affect is "Digimon Tamers - Battle Spirit".

  • japanese - Japanese

  • english - English
 
wswan.namestring MednafenName
 
wswan.rotateinputboolean0
1
0Virtually rotate D-pads along with screen.
 
wswan.sexenummale
female
FSex
  • male - Male

  • female - Female
 

Setting:Value Type:Possible Values:Default Value:Description:
wswan.debugger.disfontsizeenumxsmall
small
medium
large
smallDisassembly font size.

Note: Setting the font size to larger than the default may cause text overlap in the debugger.

  • xsmall - 4x5

  • small - 5x7

  • medium - 6x13

  • large - 9x18
 
wswan.debugger.memcharencstring shift_jisCharacter encoding for the debugger's memory editor.
 
wswan.enableboolean0
1
1Enable (automatic) usage of this module.
 
wswan.forcemonoboolean0
1
0Force monophonic sound output.
 
wswan.pixshaderenumnone
autoip
autoipsharper
scale2x
sabr
ipsharper
ipxnoty
ipynotx
ipxnotysharper
ipynotxsharper
noneEnable specified OpenGL pixel shader.

Obviously, this will only work with the OpenGL "video.driver" setting, and only on cards and OpenGL implementations that support pixel shaders, otherwise you will get a black screen, or Mednafen may display an error message when starting up. Bilinear interpolation is disabled with pixel shaders, and any interpolation, if present, will be noted in the description of each pixel shader.

  • none - None/Disabled

  • autoip - Auto Interpolation
    Will automatically interpolate on each axis if the corresponding effective scaling factor is not an integer.

  • autoipsharper - Sharper Auto Interpolation
    Same as "autoip", but when interpolation is done, it is done in a manner that will reduce blurriness if possible.

  • scale2x - Scale2x

  • sabr - SABR v3.0
    GPU-intensive.

  • ipsharper - Sharper bilinear interpolation.

  • ipxnoty - Linear interpolation on X axis only.

  • ipynotx - Linear interpolation on Y axis only.

  • ipxnotysharper - Sharper version of "ipxnoty".

  • ipynotxsharper - Sharper version of "ipynotx".
 
wswan.scanlinesinteger0 through 1000Enable scanlines with specified opacity.

Opacity is specified in %; IE a value of "100" will give entirely black scanlines.

 
wswan.specialenumnone
hq2x
hq3x
hq4x
scale2x
scale3x
scale4x
2xsai
super2xsai
supereagle
nn2x
nn3x
nn4x
nny2x
nny3x
nny4x
noneEnable specified special video scaler.

The destination rectangle is NOT altered by this setting, so if you have xscale and yscale set to "2", and try to use a 3x scaling filter like hq3x, the image is not going to look that great. The nearest-neighbor scalers are intended for use with bilinear interpolation enabled, at high resolutions(such as 1280x1024; nn2x(or nny2x) + bilinear interpolation + fullscreen stretching at this resolution looks quite nice).

  • none - None/Disabled

  • hq2x - hq2x

  • hq3x - hq3x

  • hq4x - hq4x

  • scale2x - scale2x

  • scale3x - scale3x

  • scale4x - scale4x

  • 2xsai - 2xSaI

  • super2xsai - Super 2xSaI

  • supereagle - Super Eagle

  • nn2x - Nearest-neighbor 2x

  • nn3x - Nearest-neighbor 3x

  • nn4x - Nearest-neighbor 4x

  • nny2x - Nearest-neighbor 2x, y axis only

  • nny3x - Nearest-neighbor 3x, y axis only

  • nny4x - Nearest-neighbor 4x, y axis only
 
wswan.stretchenum0
full
aspect
aspect_int
aspect_mult2
aspect_mult2Stretch to fill screen.
  • 0 - Disabled

  • full - Full
    Full-screen stretch, disregarding aspect ratio.

  • aspect - Aspect Preserve
    Full-screen stretch as far as the aspect ratio(in this sense, the equivalent xscalefs == yscalefs) can be maintained.

  • aspect_int - Aspect Preserve + Integer Scale
    Full-screen stretch, same as "aspect" except that the equivalent xscalefs and yscalefs are rounded down to the nearest integer.

  • aspect_mult2 - Aspect Preserve + Integer Multiple-of-2 Scale
    Full-screen stretch, same as "aspect_int", but rounds down to the nearest multiple of 2.
 
wswan.tblurboolean0
1
0Enable video temporal blur(50/50 previous/current frame by default).
 
wswan.tblur.accumboolean0
1
0Accumulate color data rather than discarding it.
 
wswan.tblur.accum.amountreal0 through 10050Blur amount in accumulation mode, specified in percentage of accumulation buffer to mix with the current frame.
 
wswan.videoipenum0
1
x
y
0Enable (bi)linear interpolation.
  • 0 - Disabled

  • 1 - Bilinear

  • x - Linear (X)
    Interpolation only on the X axis.

  • y - Linear (Y)
    Interpolation only on the Y axis.
 
wswan.xresinteger0 through 655360Full-screen horizontal resolution.

A value of "0" will cause the desktop horizontal resolution to be used.

 
wswan.xscalereal0.01 through 2563.000000Scaling factor for the X axis in windowed mode.
 
wswan.xscalefsreal0.01 through 2561.000000Scaling factor for the X axis in fullscreen mode.

For this settings to have any effect, the ".stretch" setting must be set to "0".

 
wswan.yresinteger0 through 655360Full-screen vertical resolution.

A value of "0" will cause the desktop vertical resolution to be used.

 
wswan.yscalereal0.01 through 2563.000000Scaling factor for the Y axis in windowed mode.
 
wswan.yscalefsreal0.01 through 2561.000000Scaling factor for the Y axis in fullscreen mode.

For this settings to have any effect, the ".stretch" setting must be set to "0".