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Old 12-10-2006, 11:43 PM   #1
Everblue
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Default Voodoo video card and video output settings for LCD

I managed to setup an towerised Amiga A1200 with mediator card and a Voodoo 5 videocard, which I have connected to an LCD monitor (LG L1511SE, native resolution of 1024 x 768). After a lot of playing around with P96's settings I managed to get a good picture, but it is not perfect.

There seems to be some 'bleeding' going on in areas of high contrast such as window edges (there is nothing wrong with the monitor as I have tried it with a PC and it works pefect).

These are the settings I have entered in P96:

Resolution: 1024 x 768
Clock: 77.10 MHZ
Framesize: 1310 x 796
Bordersize: 0, 0
Position: 72, 0
Syncsize: 60,8
Syncpolarity: Yes, yes
Freq: 59kHz, 73Hz

Anyone can help me out to find out the exact settings for my monitor?

I would also appreciate if someone goes through those settings and explains to me what each one is for

Thanks a lot guys, you rock :-D

Update: According to a specs, this monitors supported frequencies are:

Horizontal: 31 - 61kHz
Vertical: 56 - 75Hz
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Old 12-11-2006, 12:38 AM   #2
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Default Re: Voodoo video card and video output settings for LCD

Quote:
Freq: 59kHz, 73Hz
I'd suggest to move the repeating frequency down to 60 Hz. LCD monitors don't need such high repeating frequencies as they cannot flicker. And obviously this is your problem, probably because of bad-quality or too long cables used between the gfx card and the monitor. Or a switch box of minor quality.

IIRC the P96mode program lets you choose from a variaty of default modes. Just use them instead of doing your own experiments.

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Old 12-11-2006, 12:44 AM   #3
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Default Re: Voodoo video card and video output settings for LCD

Hi,

Thanks for your reply - a few questions

1. I assume repeating frequency = Vertical Frequency.

P96 doesnt let you manually edit the horizonal and vertical frequencies but you have to change framesize and the clock to get different horizontal and verticaly frequency rates - is it supposed to be like this? Shouldn't the framesize be the exact number of pixels of the monitor on an LCD display?

2. "probably because of bad-quality or too long cables used between the gfx card and the monitor"

I didnt have this problem when I connected the same monitor to a PC - I do not use a switchbox either

3. "IIRC the P96mode program lets you choose from a variaty of default modes"

Hmmm, strange that one as I didn't see any preset resolutions listed - I had to do them myself. Maybe I can download a file with these settings from somewhere?

Thanks again!

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Old 12-11-2006, 02:15 AM   #4
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Default Re: Voodoo video card and video output settings for LCD

Quote:

Hmmm, strange that one as I didn't see any preset resolutions listed - I had to do them myself. Maybe I can download a file with these settings from somewhere?

Thanks again!
try to install P96 second time and select only "ADD monitor modes" or somthin that, there are definitely presets included
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Old 12-11-2006, 02:18 AM   #5
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Default Re: Voodoo video card and video output settings for LCD

Ah, cool - I will - thanks!
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Old 12-11-2006, 02:32 AM   #6
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Default Re: Voodoo video card and video output settings for LCD

Just run the P96 install again and vhoose "update" and then just update the monitor settings
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Old 12-11-2006, 05:49 AM   #7
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Default Re: Voodoo video card and video output settings for LCD

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by AMIGAZ on 2006/12/11 11:32:28 Just run the P96 install again and vhoose "update" and then just update the monitor settings

yes, vhoose update....
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Old 12-11-2006, 08:20 AM   #8
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Default Re: Voodoo video card and video output settings for LCD

Quote:
keropi wrote:
Quote:
by AMIGAZ on 2006/12/11 11:32:28 Just run the P96 install again and vhoose "update" and then just update the monitor settings

yes, vhoose update....
sticky fingers

"hose update", "whose update"...you guys know what I mean :-P
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Old 12-12-2006, 12:44 AM   #9
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Default Re: Voodoo video card and video output settings for LCD

Quote:
I didnt have this problem when I connected the same monitor to a PC - I do not use a switchbox either
Windows automatically chooses the optimum frequencies for the monitor. Right-click on the desktop and choose Properties, then Settings (tab), Adcanced (button) and Monitor (tab). I guess it says "60 Hertz".

Bye
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