Best LCDs for retrocomputing - Was: Re: New *square* 1:1 26.5" LCD monitor 1920x1920

[Alexandre Souza]

"moroless"

Firstly, CGA is RGBI (digital RGB, with R, G, B and I for Intensity. But
there is a small difference in color 6
https://en.wikipedia.org/wiki/Color_Graphics_Adapter (see "Color Pallete")

- Arcade graphics are analog RGB in TV resolution (480i, 15.750KHz
horizontal, 60Hz vertical)
- CGA is **never** analog.
- Lots of old computers use RGBI (digital RGB). From my head: BBC mod. B,
Sinclair Spectrum +2/+3, Commodore 128, Amiga (yes, it outputs digital AND
analog RGB)
- There is no such thing as a CGA board with analog outputs.

2016-05-17 17:05 GMT-03:00 Eric Christopherson <echristopherson at gmail.com>:

> On Tue, May 17, 2016 at 2:58 PM, Ian Finder <ian.finder at gmail.com> wrote:
>
> > I was under the impression it was the same as analog RGB, but for shitty
> > cards that don't USE the analog-ness of the RGB standard, and just have
> two
> > state- 0 directly to _MAX in "analog value"
> >
>
> Yes. It's TTL level. Since posing my question, I've gotten a tiny bit more
> educated:
> 1. Some sites talk about e.g. arcade graphics as being "analog CGA" -- I
> was acquainted with these being called "analog RGB" but never saw "analog"
> and "CGA" together before.
> 2. There are computers knocking about with actual digital RGB signals, like
> the BBC Micro B (IIRC). What I forgot to make explicit in my question was
> that I was asking about RGBI (+intensity), which AIUI is the same as CGA.
>
> Now, I'm confused about point 1: did actual PCs with CGA have both digital
> (TTL) and analog signaling?
>
>
> >
> > On Tue, May 17, 2016 at 12:55 PM, Paul Koning <paulkoning at comcast.net>
> > wrote:
> >
> > >
> > > > On May 17, 2016, at 3:30 PM, Eric Christopherson <
> > > echristopherson at gmail.com> wrote:
> > > >
> > > > ...
> > > > Do either the 2001 or 2007 support *digital* RGB/CGA out of the box?
> > >
> > > What is "digital RGB"?  I know RGB as a trio of analog signals.  HDMI
> is
> > > digital, as is DVI; did you mean those?
> > >
> > >         paul
> > >
> > >
> > >
> >
> >
> > --
> >    Ian Finder
> >    (206) 395-MIPS
> >    ian.finder at gmail.com
> >
>
>
>
> --
>         Eric Christopherson
>