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→How to connect to a CRT TV: repetition
*Driver modifications like [http://wiki.arcadecontrols.com/wiki/Soft-15khz Soft15khz] and [[GroovyMAME|CRT_Emudriver]] can allow your video card to output real 15kHz RGB through the VGA/DVI port. May need to buy or create your own specialized cables depending on the CRT you use. For CRT's that don't have RGB inputs, you can use a VGA/RGB to YPbPr transcoder (such as the [http://www.curtpalme.com/TC1500.shtm Crescendo TC1500]) to change the signal type to YPbPr component video without any scaling or latency, but they are very hard to find, especially on the cheap.
*An alternative to the above is to get a SCART to Component transcoder such as a CSY-2100 clone such as like [http://www.ebay.com/itm/NEW-SCART-RGB-to-YUV-Component-Video-Converter-Scaler-/221156873851?hash=item337dfa167b this one] and make a VGA to SCART adapter using [http://www.nexusuk.org/projects/vga2scart/circuit this schematic,] making sure to bridge pins 5 and 11 on the VGA side. The clones usually need color adjustment, so pull up two NTSC test images (one on a color-calibrated display, and one on the TV), open up the transcoder, and twist the knobs with a screwdriver until you get the picture you desire. You will be able to output a 240p image with this method. Use [http://geocities.ws/podernixie/htpc/modes-en.html these modelines] for the console that you are going to emulate, or use lrmc to generate new ones. These modelines are RandR modelines, so if you are using Windows, use WinModelines to apply them. If using GNU/Linux or *BSD, use xrandr. If you are using GNU/Linux, make sure you use the open source graphics drivers, and not the proprietary ones. There is no need for any driver modifications like there is on Windows.
*If using a PAL TV with RGB SCART (make sure it supports RGB and not just composite through SCART), use [http://www.nexusuk.org/projects/vga2scart/circuit this schematic] to build a VGA to SCART converter, and that is all you need to do. Keep in mind that this schematic does not apply to Japanese RGB JP-21. Use the appropriate pinout for JP-21 instead in that case, available [http://www.gamesx.com/wiki/doku.php?id=av:scart2rgb here]. It will work just the same.
