15Khz con DDC ¿Es posible? - Página 2

17-ene-2008, 14:41

Quote:

Originalmente publicado por Manofwar

Para los que estén interesados en el DDC/EDID os dejo un enlace de microsoft relacionado con el tema.

http://www.marcianitos.org../../../showthread.php?t=12350

Saludos

Manofwar has puesto el enlace a este foro no al link de microsoft.

Y que decir de esto!! Uff seria la caña, tener una interfaz con un IPP, con un amplificador (yo al amplificador le añadia un potenciometro para el volumen) y sobre todo conseguir sacar los 15hz mediante hardware.

Animo y lo que quieras, yo tambien siento mucho no controlar de esto para echarte una mano, pero en lo que sea posible te ayudare.

Ya sabes, a tu disposicion.

Un saludo

17-ene-2008, 14:49

Gracias Cetus, ya está cambiado el enlace

Saludos

22-feb-2009, 13:39

(sry english only)
Wow... Just stumbled upon this topic.
Actually 15kHz via DDC does work, however there are several limits.

1. Most cards I've testet with it, aren't using the EDID definitions until windows (or linux) load their driver but that may be due to my EDID data.
Was using a ATI HD2400 and an GeForce 8400GS.

2. Older cards just "limit" their mode tables, but don't use the new values.

*EDIT*
Prototype Hardware:

First Batch Hardware:

23-feb-2009, 00:13

Sailor, so you built this hardware? does it actually work?

I would like to know a little more about it.

23-feb-2009, 00:51

Yes.
The dongles basicaly just an 24LC22A and a few wires.

I built them in the first place to "unlock" GeForce 8-9-GTX cards for Soft-15kHz as the fall into a "safe mode" if your monitor doesn't have a valid EDID.

It does work perfectly for that purpose.

EDID Revision 1.3 requires you to provide at least 1 "default" timing, and I've supplied a 640x480i modeline for that.

Basically Windows will output 640x480 in 15kHz with the dongle applied without any changed to the drivers (i.e. winmodeslines / soft-15khz / powerstrip). However the BIOS and bootup stuff still is shown in 31kHz.

As for the "howto"...
Well VGA Pins 1, 2, 3, 5, 6, 7, 8, 9, 10, 13 and 14 are wired from the male to the female connector.
And VGA Pins 5, 9, 11, 12 and 14 are wired to the 24LC22A.

17-ene-2008, 14:49	#12
Manofwar Marciano	Gracias Cetus, ya está cambiado el enlace Saludos

22-feb-2009, 13:39	#13
SailorSat Usuario registrado	(sry english only) Wow... Just stumbled upon this topic. Actually 15kHz via DDC does work, however there are several limits. 1. Most cards I've testet with it, aren't using the EDID definitions until windows (or linux) load their driver but that may be due to my EDID data. Was using a ATI HD2400 and an GeForce 8400GS. 2. Older cards just "limit" their mode tables, but don't use the new values. EDIT Prototype Hardware: First Batch Hardware:

23-feb-2009, 00:13	#14
Paul Sernine Moderador	Sailor, so you built this hardware? does it actually work? I would like to know a little more about it.

23-feb-2009, 00:51	#15
SailorSat Usuario registrado	Yes. The dongles basicaly just an 24LC22A and a few wires. I built them in the first place to "unlock" GeForce 8-9-GTX cards for Soft-15kHz as the fall into a "safe mode" if your monitor doesn't have a valid EDID. It does work perfectly for that purpose. EDID Revision 1.3 requires you to provide at least 1 "default" timing, and I've supplied a 640x480i modeline for that. Basically Windows will output 640x480 in 15kHz with the dongle applied without any changed to the drivers (i.e. winmodeslines / soft-15khz / powerstrip). However the BIOS and bootup stuff still is shown in 31kHz. As for the "howto"... Well VGA Pins 1, 2, 3, 5, 6, 7, 8, 9, 10, 13 and 14 are wired from the male to the female connector. And VGA Pins 5, 9, 11, 12 and 14 are wired to the 24LC22A.