Fwd: VGA output

[John Watlington]

I guess Ian never put this info on the Wiki.
Ian Daniher (it.daniher at gmail.com) was doing this
as recently as this fall using connectors scavenged from
A-phase boards.

The problem is going to be obtaining the VGA connector.
As far as I know, they are not available in small quantities.
The pinout is attached.

wad

Begin forwarded message:

> From: John Watlington <wad at laptop.org>
> Date: January 9, 2008 1:28:54 PM EST
> To: it.daniher at gmail.com, seth at isforinsects.com
> Cc: John Watlington <wad at laptop.org>
> Subject: VGA output
>
>
> OK.   Absolutely no guarantees here --- the last time I tried to  
> get a VGA output
> from Linux, it was broken.   But as was pointed out on IRC, if your  
> monitor has
> a wide enough lock range this might work on production machines (we  
> fixed
> a problem between B2 and B3 that was also causing problems.)
>
> Components that were depopulated on C2 (MP machines) needed to support
> VGA output are:
>
> U2, U3: 74AHCT1G125GW    (sync drivers)
> C152:    0.1 uF
> R1, R2, R3:  75 ohm
>
> To support the VGA I2C link (UART 2 on the CS5536 southbridge):
> R122, R123:  10K
> Q7, Q8:  2N7002
> R115, R116:  10K
> D6:  CH501H-40PT  (just about any schottky diode should do, this is  
> inline
>       in the +5V supplied to the monitor)
>
> Good luck finding that VGA connector, I don't have a part number  
> for it.
> The pinout is attached.
> The signal/pin mapping is:
> Red - 1
> Green - 2
> Blue - 3
> NC - 4,11
> GND - 5,6,7,8,10
> VSYNC - 14
> HSYNC - 13
> EDID_DATA - 12
> EDID_CLK - 15
>
> Cheers,
> wad
>
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