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wiki:vga2scart [17.05.2013 09:03] 94.23.238.222 EFZJwRtwZhZ |
wiki:vga2scart [02.12.2013 22:35] (current) rgareus old revision restored |
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| - | Thanks for that! It's just the asnwer I needed. | + | ====== VGA to SCART ====== |
| + | This pages describes a vga to scart adapter and a working setup with xFree/Xorg and old 80's style TV. | ||
| + | The ususal disclaimer and policy applys. | ||
| + | |||
| + | ===== Hardware ===== | ||
| + | |||
| + | ==== Schematic ==== | ||
| + | |||
| + | |||
| + | VGA SCART | ||
| + | |||
| + | 1 -O------------------------------------------O- 15 R | ||
| + | 2 -O------------------------------------------O- 11 G | ||
| + | 3 -O------------------------------------------O- 7 B | ||
| + | |||
| + | 6 -O------------------------------------------O- 13 R Gnd | ||
| + | 7 -O------------------------------------------O- 9 G Gnd | ||
| + | 8 -O------------------------------------------O- 5 B Gnd | ||
| + | |||
| + | 5 -O-+ | ||
| + | | | ||
| + | 11 -O-+ | ||
| + | |||
| + | Connector --------------------------------------O- 21 Connector | ||
| + | shell shell | ||
| + | |||
| + | 14 -O------------------------+ | ||
| + | -VS | | ||
| + | | | ||
| + | | / | ||
| + | +-----+ |/ | ||
| + | 13 -O--+ 3k3 +-----*-----| BC 548 B | ||
| + | -HS +-----+ | |\ | ||
| + | | | \| | ||
| + | | -| +-----+ | ||
| + | | *-----+ 68 +-----O- 20 | ||
| + | | | +-----+ -CS | ||
| + | +++ +++ | ||
| + | | | | | | ||
| + | | | | | | ||
| + | +++ +++ | ||
| + | | | | ||
| + | 10 -O--------------*---------*-----------------O- 17 | ||
| + | Gnd 1k2 820 Gnd | ||
| + | |||
| + | |||
| + | *optional*: combine grounds | ||
| + | |||
| + | 5,6,7,8,Shell ------------------------------------ 5,9,13,17,21 (grounds) | ||
| + | |||
| + | *optional*: hardcode TV mode - some //modern// TVs allow those modes | ||
| + | to be switched via OSD, or autodetection. I needed to hardwire those for my | ||
| + | old 80's arcade - TV. | ||
| + | |||
| + | +12V <------------------------*-----------------O- 8 | ||
| + | | | ||
| + | | +-----+ | ||
| + | *-----+ 560 +-----O- 16 | ||
| + | +-----+ | ||
| + | |||
| + | GND <------------------------------------------O- 17,18 | ||
| + | |||
| + | |||
| + | You can use any general purpose low frequent low power Si NPN transistor instead of the BC 548 B | ||
| + | The resistors are all standard 250 mW carbon film resistors; | ||
| + | 68 = 68 Ohm | ||
| + | 560 = 560 Ohm | ||
| + | 820 = 820 Ohm | ||
| + | 1k2 = 1200 Ohm | ||
| + | 3k3 = 3300 Ohm | ||
| + | |||
| + | Notes: | ||
| + | |||
| + | * The link between 5 (Gnd) and 11 (Mid0) tells your VGA card that your `monitor' is colour. | ||
| + | * The R-, G- and B grounds are in fact shields (The R-, G- and B wires are in fact little coaxes). The same goes for the `-CS' wire. | ||
| + | * The connector shells are connected to a common shield screening all wires and coaxes inside the cable. | ||
| + | * If you use a female SCART connector, use pin 19 for -CS. | ||
| + | |||
| + | * 12 Volt on scart pin 8 selects AV mode. | ||
| + | * 3 Volt on pin 16 select RGB (instead of composite) | ||
| + | |||
| + | ==== Testing and Debugging ==== | ||
| + | |||
| + | ===== Software ===== | ||
| + | |||
| + | |||
| + | X11 //XF86Config-4// or //xorg.conf// | ||
| + | |||
| + | Section "Device" | ||
| + | Identifier "GFX" | ||
| + | # Driver "mga" | ||
| + | Driver "nv" | ||
| + | BusID "PCI:1:5:0" | ||
| + | EndSection | ||
| + | |||
| + | Section "Monitor" | ||
| + | Identifier "TV" | ||
| + | HorizSync 10-20 | ||
| + | VertRefresh 40-60 | ||
| + | |||
| + | ModeLine "TV" 18.00 936 968 1056 1152 576 580 583 625 interlace -hsync -vsync | ||
| + | |||
| + | EndSection | ||
| + | |||
| + | |||
| + | ==== nVidia RIVA 128(TM) ==== | ||
| + | |||
| + | minimum pixel clock of 18MHz. | ||
| + | |||
| + | ==== Matrox MGA productiva G100 ==== | ||
| + | |||
| + | Clock range: 17.75 to 250.00 MHz | ||
| + | |||
| + | {{tag>video development installation}} | ||