What is a 640x400 LCD TV supposed to do with higher resolutions ?

[gwyche]

@Hodgkinson

As a point of info for others : The Samsung.ZIP is 25 Megabytes in size.

I very much appreciate all of the information in this thread. My conclusion is that LCD is a bleeding edge technology for Classic Amigas. No LCD solution compares favorably with CRTs as of 2008-03-23.

Would you all state why you subject your Amiga experience to other than CRTs?

ggw

[gwyche]

@Phantom

You Signature mentions CyberVision64 CD, so I turn my attention to you.

I am looking for the specifications of the CyberVision3D. If this is easily supplied I would be grateful.

Are CyberVision3D and CyberVision64 3D the same?

Does this discussion of LCD's poor performance with Classic Amigas also apply to LCD's connected to the CyberVision?

ggw

[gwyche]

@Hodgkinson

1. Uni (Lack of space, LCD needed anyway)
Uni?
LCD required?

2. Don't have any 15Khz monitors
How does LCD solve this? I thought they don't do 15KHz.

3. Can't fit/don't have spare scandoubler
So LCD has built in scandoubler? or in some way LCD avoids interleave flicker but nature of LCD?

4. Don't have Gfx card (A1200D)
Good reason.

5. Current VGA monitor is only 15"
Very good reason.

6. Nuisance of having to have a spare TV hooked up for 15Khz screenmodes.
Same as #2 above?

7. And probably one or two other reasons...
Please add them as they come to you. I value your input.

ggw

[gwyche]

@Hodgkinson

So #1, it would be fair to say, is truly a foot-print issue, both weight and size? I still don't know to what "Uni" refers, what did that mean?

With one device (which happens to be this model of LCD) you :
o  reduce the depth required, giving you more room in front of the monitor, and
o  worries about the effects of weight on your desk +
o  effort (and dangers) of moving heavy things by reaching are significantly reduced

2 Fewer monitors are required for the specialized need of 15KHz for the boot screen (the only truly required need) since this model supports 15KHz

You included #3 in your reply, but didn't address the  "interleave" flicker. How does LCD avoid this?

#6 can be dropped as it is covered by #2.

I know nothing of SCART, so I go now to read about it where ever Google leads me.

Thanks

[gwyche]

@arkpandora

Good luck with your Uni goals.

Thanks for the clarification.

By flicker I meant the action that occurs for which "flicker-fixer" hardware for the Classic Amiga was made.
Many people find that the time that the CRT electron gun takes to write the screen is seen as a flicker, specially when you dart your the focus of your eyes from one place to another. It is "doubly" bad when the interlace mode is not present many lines have to be drawn.

The more lines, the more time it takes to traverse them all.

- - - - - - - - - - - - - - - - - - - - - - - -
I have another question.

No one on these threads talks about a "driver" program for these LCD monitors.

A member of our Amiga Club went to a sales place to buy an LCD to work with his CyberVision3D. His 1st purchase stayed black no matter what, so he took it back and was referred to the manager. The manager claimed to have owned an Amiga2000 a long time ago. He said that all of the LCD monitors (that they had?) required "drivers" and that he knew that no drivers were made by the manufacturers that would run on an Amiga. He suggested that our club member might look on the internet for a 3rd party driver.

What is that about?

ggw

[gwyche]

@ arkpandora

Sorry to be dense, but if the screen stays black how can you do ANYTHING?

I was not with this guy when he tried to hook it up to his A3000 with Cybervision3D. I take him at his word. Stayed black. Hmmm. I assume that even if you don't connect it to anything at all, that some box, at least, shows up saying "No Signal Detected" or the like.

I suppose I could take my CRT over to his house (he lives about 20Km away) so we could set some trial resolution, then switch over to the LCD and see if it works. Keep trying different ones.

Oh yes, he emailed today to say that the one he got (and returned already!) was
--------------------------------------------------
 a Samsung Model 2253BW 22" LCD with 8000 to 1 contrast ratio, 2ms response time, 1680 x 1050 resolution, and VGA + DVI.
--------------------------------------------------

ggw

[gwyche]

@ Hodgkinson

This behemoth is what I have lugged more than I have ever wanted to. I'm
glad it finally got soooooo dim I begged for a replacement (only to get another gigantic CRT, not quite as heavy).

You shame me with your willingness to make internal changes to resistors to keep the contrast useful on your CRTs at home.

My mentor counciled me to NEVER work on CRT (TVs), because I would be inundated with TV problems from people (friends!). He said it was like owning a pickup truck.

I think I have enough information to begin weeding through the LCD monitor/TV offerings here in Austin, TX.

ggw

[gwyche]

@ arkpandora

A reasonable summation of the situation.

Thanks.
For closure I'll report back if he ever gets a LCD to work.

ggw

[gwyche]

@ Hodgkinson

Bravo! Good piece of work.

I can imagine what an attempt on my part to make such a beautifully constructed cable would look like!

ggw

[gwyche]

@ arkpandora

Showing my provincialism here, I nearly sputtered my beer out my nose in laughter when I read your opening statement.

In these parts (Austin, TX) phlegm is the crud you cough up when you have had a bad cold!

My better educated wife alerted me to your meaning... before I reached the clarifying 3rd paragraph.

I definitely will not allow our club member to get a 2032.

ggw