@Everblue

Nice blue :D

@Everblue

Does this problem surface when using the DVi out to DVI in on the monitor?

How is the quality DVI to DVI?

And how is the quality when using a 9250 PCI?

Last edited by TheDaddy on 30-Dec-2008 at 04:15 PM.

_________________
www.loriano.pwp.blueyonder.co.uk

@TheDaddy

Hi,

I do not have a Sam440 yet, but I was getting ready for the worst. A lot of people are complaining that when using a DVI to VGA adapter, the image is crap. This has been confirmed by Acube as evidenced by the email I posted in my prior post in this thread.

It seems that DVI to DVI has no problems.

_________________

I tried three different DVI2VGA adapters and everytime the same: shadows, especially visible on text chars. So I can say it's not a prob of the adapter!
Fortunately my TFT has two inputs (VGA & DVI) so I'm using the DVI one and everything looks good. The native resolution of my 17" monitor is 1280x1024 which I'm using in OS4.1 too.

By the way, has someone tried the S-VIDEO connector?

Last edited by DaFreak on 23-Jan-2009 at 02:36 PM.
Last edited by DaFreak on 23-Jan-2009 at 02:35 PM.

_________________
Sam440ep & AmigaOS4.1 @ Morex 3677 case
---
(DaFreak of Liquid Skies & Moods Plateau)

@DaFreak

I am using Laurent's SAM with a DVI2VGA adapter and everything is fine

I haven't tried the S-Video connector yet

_________________
www.loriano.pwp.blueyonder.co.uk

@TheDaddy

Hmm.. did you had the bad quality before? And which screen resolution?

Btw who's Laurent?

_________________
Sam440ep & AmigaOS4.1 @ Morex 3677 case
---
(DaFreak of Liquid Skies & Moods Plateau)

@DaFreak

Laurent is the guy who posted this thread.

I have no bad quality.

My monitor is an old 19" CRT

connected to the SAM via the DV to VGA adapter.

I am running 1024x768 at the moment.

_________________
www.loriano.pwp.blueyonder.co.uk

@TheDaddy

Maybe quality is better on CRT, I use a LCD. with 1024 x 1280. I bought the SAM from Alinea in Germany. They said, they DONNOT have the Issue with bad quality via DVI2VGA Adaptors.
At the moment we are searching for the reason.... I`ll keep you uptodate.
I am using the Nexus Psile Case, maybe there is a problem ?

greetings

Gerograph

_________________
Geomarketing at
www.geobiz.de
www.gebietsplanung.net
www.geomarketing-consultant.de

Quote:

TheDaddy wrote: My monitor is an old 19" CRT

Which is why you dont notice it :)

_________________
SAM440EP MINI-ITX 667MHz - 512MB
SAM440EP FLEXATX 800MHz - 512MB - R9250 256MB

@gerograph
m3x/ACube have said they believe the problem is caused by an impedance mis-match due to the VGA cable being used. Although that sounds like a design flaw of the Sam440 to me.

However, they also said using the *internal* VGA connector (not so easy at the moment) should solve it...

Last edited by ChrisH on 23-Jan-2009 at 04:32 PM.

_________________
Author of the PortablE programming language.
It is pitch black. You are likely to be eaten by a grue...

@Yaroze

>>TheDaddy wrote:
My monitor is an old 19" CRT
Which is why you dont notice it :)

Sometimes old stuff is better LOL!

_________________
www.loriano.pwp.blueyonder.co.uk

Mystery solved.

I think it's got to do with diferent batches of SAMs.

I have got two SAMs on my desk, one looks like a first batch (it has everything on it, the FPGA connector etc...) and the picture quality on my 19" VGA monitor with DVI-VGA adapter is crystal clear.
This is Laurent's board, I borrowed it from him for the case I am designing.

My real board arrived this morning and it looks like a newer batch as it hasn't got the following:

J28
J6
J26
J8
J4
J3

AND

the picture quality is poor with the same monitor and DVI-VGA adapter (I have also tried another adapter but still the same).

Vertical lines on the screen, especially visible with a white/grey background. They are not proper lines but they seem to be like when there is interference.

Any help?

I am not planning to buy a TFT with DVI input just for the SAM.

Last edited by TheDaddy on 30-Jan-2009 at 07:06 PM.

_________________
www.loriano.pwp.blueyonder.co.uk

/semi OT
Does VGA still exist? LOL
If you can use DVI
/semi OT

_________________
ikir

@TheDaddy

Quote:

TheDaddy wrote: the picture quality is poor with the same monitor and DVI-VGA adapter (I have also tried another adapter but still the same). Vertical lines on the screen, especially visible with a white/grey background. They are not proper lines but they seem to be like when there is interference.

As I told here -> http://amigaworld.net/modules/newbb/viewtopic.php?topic_id=28041&forum=14&5

My monitor is a Samsung LCD/TV 941MP and I am using the dvi>vga provided by Acube. At the lest side of the screen (where the devices icons are) I have vertical grey lines (!). But not only that, I can see the image of the boing ball (of the default system icon of OS4) at least 10 times fading from left to right! Also the same vertical lines appear at most of the drawers I open at the right or left side of it. The image is so terrible that I headache after I use it for at least an hour. I am using radeon M9: 1280x1024 ARGB32 Screenmode. But the same effect occurs at all the screenmodes (from 1280x1024 to 800x600).

=================================================================
Now pay attention to this: Go at the album of aw.net where it has screenshots of OS4.x (no matter how old or new). Open one with you browser (never mind if it's IB or OWB), resize the window so it wont be fullscreen when you open the screenshot. See? The same lines at the same way at the same spot! Open up a screenshot from a different OS (let's say Vista), the lines are not there or they are not so obvious!
==================================================================

Quote:

Any help?

None at the moment. The only hope is to get the I/O backplate that ACube is working on!

Quote:

I am not planning to buy a TFT with DVI input just for the SAM.

Yeap, me too...

_________________

@ikir

>>Does VGA still exist? LOL
If you can use DVI


I could see the funny side but I don't want to.

Does the board come with a DVI to VGA adapter? YES

This implies it can be used with a VGA CRT monitor.
Now, it's not my fault that some SAMs work fine with a 19" CRT VGA monitor and some don't, using the same adapter, everything is the same apart from the SAM boards.

There is obviously a flaw somewhere.

I am certainly NOT going to spend more money on a TFT screen with DVI just to use the SAM when I have available monitors.


Also one SAM board displays fine on the VGA monitor and the other one, the most recent, doesn't. It's pretty obvious isn't it? There is a difference in the SAM boards somewhere.

I am a major supporter of the SAM/OS4.1 and ACube but...

Last edited by TheDaddy on 30-Jan-2009 at 07:48 PM.

_________________
www.loriano.pwp.blueyonder.co.uk

@Cool_amigaN


>>None at the moment. The only hope is to get the I/O backplate that ACube is working on!

And what is this backplate supposed to do?

_________________
www.loriano.pwp.blueyonder.co.uk

@TheDaddy

Quote:

TheDaddy wrote: @Cool_amigaN >>None at the moment. The only hope is to get the I/O backplate that ACube is working on! And what is this backplate supposed to do?

It will give us the advantage to use a) The internal VGA , b) The 5.1 Audio (with mic, line in etc), c) It will have two usb outputs (the cables will be installed of course on the existing usb ports of sam)

_________________

@TheDaddy

The backplate maybe able to utilize the internal VGA Port, so therefore we can connect to the internal VGA Port rather then converting DVI Signal.
As forwarded in this thread, people think/know that this internal port provides better picture quality.
Concluding what people said here and on other forums, we need a proper "backplate" with VGA out, Line IN, Mic IN and the 2 internal USB Ports. Furthermore some people would be happy to see Audio 5.1 thingy and 3rd USB Port. So ACube... give us the backplate, please..

greetings gerograph

_________________
Geomarketing at
www.geobiz.de
www.gebietsplanung.net
www.geomarketing-consultant.de

@TheDaddy

Quote:

My real board arrived this morning and it looks like a newer batch as it hasn't got the following: J28 J6 J26 J8 J4 J3 AND the picture quality is poor with the same monitor and DVI-VGA adapter (I have also tried another adapter but still the same).

The business with the DVI-VGA adapter and LCD monitors doesn't bother me too much because I don't have an LCD monitor, and when I get one I'll get one with DVI, but... all those missing connectors!

I don't know what they are with the jumper numbers... but I'm guessing that they include the I2C, SPI, and I/O connectors from the FPGA, correct? I want all of those things!

... still waiting for my SAM ...

@gerograph

>>The backplate maybe able to utilize the internal VGA Port, so therefore we can connect to the internal VGA Port rather then converting DVI Signal.

What if I don't want to do that?
There is a DVI connector onboard and the board comes with an adapter (DVI-VGA).
I want to be able to connect my SAM with DV-VGA adapter to my 19" CRT VGA monitor like I CAN do with the other SAM.

>>As forwarded in this thread, people think/know that this internal port provides better picture quality.

Fact remains that I have here on my desk 2 SAM boards one works fine, the other, with the exact same set up doesn't, this points to the more recent SAM.

_________________
www.loriano.pwp.blueyonder.co.uk