RGB-VGA Converter -- buy or build?

From: Richard Erlacher <edick_at_idcomm.com>
Date: Wed Feb 7 15:16:22 2001

I've never seen an RGB-VGA adapter that cost more than $7. I suppose they
could cost more, but I generally buy them at computer surplus stores where
they cost about $2.

All these do is route the signals from one sort of connector to another,
however, and IF you have some strange sort of video card, it's not
guaranateed to work, since there are may different timing parameters that
have to be satisfied.


----- Original Message -----
From: "Louis Schulman" <louiss_at_gate.net>
To: <classiccmp_at_classiccmp.org>; "Rich Beaudry" <r_beaudry_at_hotmail.com>
Sent: Wednesday, February 07, 2001 1:35 PM
Subject: Re: RGB-VGA Converter -- buy or build?

> Well, first you should find some faqs and info on video
> standards and read them. Here are a few basics.
> RGB is not a single type of video. It just means separate
> color outputs. It is generally divided into analog and
> digital. VGA is an example of analog, CGA is an example of
> digital.
> There are other kinds of analog and digital as well. Some
> analog RGB use scan rates much lower than VGA, but are
> otherwise similar. This is the case with Amiga RGB, for
> example. In that case, scan doublers are available to
> convert the video to VGA.
> To know the answer to your question, you have to identify
> exactly what type of video output you have. Then, whether
> and how it could be converted can be addressed.
> Generally, the best solution is to get the right kind of
> monitor for the video you have. There are some monitors
> that can handle many types of video, and these are very
> useful for old computer enthusiasts.
> Louis
> On Wed, 7 Feb 2001 14:04:24 -0500, Rich Beaudry wrote:
> >Hello....
> >
> >I have a video card that outputs RGB, but I have no RGB monitor... Not
> >knowing anything about video standards, I ask the following :-)
> >
> >- How hard would it be to build an RGB-to-VGA converter to use my
> >VGA monitor (well, actually capable of 1024x768 non-interlaced)? Does
> >anyone have schematics, or documentation to guide me along?
> >
> >- Would it be easier to convert RGB to composite video? I have several
> >devices that can take composite input....
> >
> >- Has anyone bought a reasonably cheap (sub-$100 US) RGB-to-VGA converter
> >unit, and been happy with it? If so, where did you get it from?
> >
> >Thanks!
> >
> >Rich B.
> >
> >P.S. I subscribe to the digest, so I cannot reply directly....
> >
> >
Received on Wed Feb 07 2001 - 15:16:22 GMT

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