You can then change the values of various options using the Value -/+ buttons. For details of all the
options, see the wiki page here:- http://junkerhq.net/xrgb/index.php/OSSC
Scanlines
Vintage games consoles such as the Sega Megadrive and Nintendo NES used a special screen mode
which resulted in alternating lines on a CRT display being left blank. Typically when people in the
retro-gaming communities refer to scanlines, they mean the blank lines between parts of an image
on a CRT that were a result of this screen mode. OSSC allows you to simulate these scanlines,
making the image look more authentic. You can enable or disable scanlines on the OSSC by using
the menu and navigating to “Post-Proc” and then “Scanlines”. Setting scanlines to “Auto” means
that scanlines appear only on 240p/288p sources, while “Manual” scanlines will appear over all
sources regardless of original resolution. Alternatively you can toggle scanlines by pressing BTN1
on the device, or by pressing the Scanline Mode button on the remote control.
You can also configure scanline strength from the OSSC menu, or by using the Scanline Int button
on the remote. How pronounced the scanlines would look on a real CRT varies greatly between
displays, so set the scanline strength to your taste.
Line triple, quadruple and quintuple
By default the OSSC takes in one scanline and outputs two, resulting in a lag free conversion of
240p to 480p. Line triple mode (Line3x) attempts to triple each scanline instead. OSSC now offers a
line quadruple and quintuple mode too (hereafter referred to as Line4x and Line5x respectively).
These modes can result in a very sharp image on compatible displays. Unfortunately, not every
display is compatible.
To change the line multiplication mode, press the Menu on/off button so that the OSSC menu is
displayed on the LCD and then navigate to “Output opt”, select this and then navigate to
“240p/288p Proc”. Use the prev/next buttons on the remote to choose the desired multiplication
mode. For most sources you should also check that your chosen line multiplication mode is set to
“Generic 4:3”. While still on the Output opt menu, use the remote to select “Line3x mode” (or the
appropriate setting for your chosen line multiplication setting) and ensure that it is set to “Generic
4:3”.
For Line5x mode, you can also choose the picture format under “Line5x format”. The available
options are 1920x1080, 1600x1200 or 1920x1200. If your display supports 1600x1200 or
1920x1200 then using these modes will display the full image on your display. In 1920x1080 mode,
parts of the image will be cropped.
You cannot damage your display by trying the line multiplication modes. If your display refuses to
show a picture, simply use the LCD to turn line triple mode off again. There are a small number of
displays that are more compatible in line triple mode.
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