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Offline starf81Topic starter

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Picasso II and LCD monitors
« on: June 24, 2005, 02:54:02 PM »
Hello!

I'm going mad!!!
Yersteday I've got some 1200's parts such as a Micronik Zorro 2 busboard and a Picasso II card.

I'm trying to get working the Picasso with my Sony X73 LCD monitor but I can't find any comatible screenmode.
My monitor shows only black screen ("flickering" sometimes a single frame...) or reports an error about the frequency or the resolution higher than its native (1280x1024). But... I was testing resolutions like 640x480 or 800x600.
Using a CRT monitor all work well but I must use the LCD monitor only.

Any ideas?

THANKS IN ADVANCE!!!
Alex
A1000 - A2000 (020/16) - A3000 (060/50) - A500 - A500+ - A600 - A1200 (030/50) - CDTV - CD32

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Offline AmireX

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Re: Picasso II and LCD monitors
« Reply #1 on: June 24, 2005, 03:01:27 PM »
I had also tested 2 LCD's one from HP and the other one from Viewsonic. The HP also doesn't work because of the small range of vertical frequence. The Viewsonics and the Syncmasters from Samsung (I think) had a wide vertical range (30 kHz - 82 kHz) and are working well with the amiga resolutions.

I decided for the Viewsonic VP191s. Good design and works perfect :-)
 

Offline nadoom

Re: Picasso II and LCD monitors
« Reply #2 on: June 24, 2005, 03:06:05 PM »
there is a tool with picasso 96 that allows you to tweek the scan rates and stuff like that, maybe you could use that to find a screen mode that works.

from what i remember if you try and make the refresh rate 60 hz that might help.
?وإلل وإلل وإلل, وأت د وي هف هر ثهن
 

Offline starf81Topic starter

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Re: Picasso II and LCD monitors
« Reply #3 on: June 24, 2005, 03:10:06 PM »
My Sony accepts these ranges:

Horizontal Frequency     28 k - 80 KHz
Vertical Frequency    48 - 75 Hz

Alex
A1000 - A2000 (020/16) - A3000 (060/50) - A500 - A500+ - A600 - A1200 (030/50) - CDTV - CD32

AN AMIGA WEB RESOURCE
 

Offline AmireX

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Re: Picasso II and LCD monitors
« Reply #4 on: June 24, 2005, 03:14:48 PM »
Sorry, of course I mean horizontal frequency :-)

Do you have an information menu entry in the OSD, where you can check the frequencies ???
 

Offline dnelsonfl

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Re: Picasso II and LCD monitors
« Reply #5 on: June 24, 2005, 03:20:10 PM »
If your resolution is okay (640x480 for example) then double-check your frequency. Look in the Sony's manual to see the acceptable range. I have the same monitor as you (Sony X73 LCD) and I have no problems using it with an A3000 native and with Cybervision 64 card. Frequency is set to 60 hz because it is a LCD. The Windows and Linux PCs that also use this monitor (KVM switch) are also set to 60 hz.
 

Offline starf81Topic starter

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Re: Picasso II and LCD monitors
« Reply #6 on: June 24, 2005, 03:28:26 PM »
I've tried all frequencies in the range accepted by my monitor using the Picasso96 Prefs but nothing changed  :-(

Alex
A1000 - A2000 (020/16) - A3000 (060/50) - A500 - A500+ - A600 - A1200 (030/50) - CDTV - CD32

AN AMIGA WEB RESOURCE
 

Offline dnelsonfl

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Re: Picasso II and LCD monitors
« Reply #7 on: June 24, 2005, 03:39:34 PM »
Unfortunately my Amiga is in pieces at the moment for upgrading, so I can't fire it up and check the monitor settings. I don't recall doing anything special other than selecting a resolution and making sure it was at 60hz. Have you tried the monitor with another computer, and if so did it work?
 

Offline starf81Topic starter

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Re: Picasso II and LCD monitors
« Reply #8 on: June 24, 2005, 03:46:44 PM »
@dnelsonfl

Yes, I use it everyday with my Mac.

Alex
A1000 - A2000 (020/16) - A3000 (060/50) - A500 - A500+ - A600 - A1200 (030/50) - CDTV - CD32

AN AMIGA WEB RESOURCE
 

Offline dnelsonfl

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Re: Picasso II and LCD monitors
« Reply #9 on: June 24, 2005, 04:00:37 PM »
@starl81,

I'll see if I can get the Amiga booted up over the weekend and see if I can find anything useful in the monitor setup for you that might explain why it's not working.
 

Offline starf81Topic starter

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Re: Picasso II and LCD monitors
« Reply #10 on: June 24, 2005, 04:15:39 PM »
@dnelsonfl

Ok... thank you!

Alex
A1000 - A2000 (020/16) - A3000 (060/50) - A500 - A500+ - A600 - A1200 (030/50) - CDTV - CD32

AN AMIGA WEB RESOURCE
 

Offline starf81Topic starter

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Re: Picasso II and LCD monitors
« Reply #11 on: June 24, 2005, 04:21:52 PM »
... to let you understand, at the moment this is the status of my room  :-D

A1000 - A2000 (020/16) - A3000 (060/50) - A500 - A500+ - A600 - A1200 (030/50) - CDTV - CD32

AN AMIGA WEB RESOURCE
 

Offline dnelsonfl

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Re: Picasso II and LCD monitors
« Reply #12 on: June 27, 2005, 04:30:29 AM »
@start81,

The company we were expecting from Nicaragua arrived two days early, so I only had about an hour to check on the Amiga for you. Turns out the HD is flaky, so I couldn't really look at the settings for you.

But! Very good news -- I found some of the things that had helped me get it working in the first place. Other people had similar problems getting LCDs to work with graphics cards. It wasn't just a Picasso II and Sony monitor problem. The solution was to get the horizontal frequency close to 60Khz and make sure the vertical frequency was within your monitor's range.

Using Picasso96Mode, duplicate one of the screen modes you would like to use (say 1024x768 at 256 colors). Edit this duplicated settings file. The important parts are CLOCK and FRAMESIZE. The horizontal frequency is the pixel clock divided by the horizontal framesize. The vertical frequency is the horizontal frequency divided by the vertical framesize. If you are already seeing about 60Khz for the horizontal frequency, then it's the vertical frequency we need to try to lower. Lowering the CLOCK should do the trick. Adjust it and try the TEST button and see if it works. If it does, save it and use it. For example, if that 1024x768 mode has a clock of 80MHZ, a horizontal frame of 1304, and a vertical frame of 815, then the horizontal frequency is 61kHZ and the vertical frequency is 75Hz. Changing the clock to 68Mhz will reduce the horizontal frequency to about 52Khz and the vertical frequency to about 63Hz.

I remember having to play around with it like this to get it to work. I don't think had I gotten my Amiga working today it would have helped much since I'm using a Cybervision64 (4MB) on an A3000. Different hardware might mean different values.

I hope this helps, or at least points you in the right direction. Come to think about it, I had to set similar parameters when I was installing Linux on one of the Pentium boxes to use that monitor, too.

Here's a link to working with Picasso96Mode: Link

-David
 

Offline starf81Topic starter

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Re: Picasso II and LCD monitors
« Reply #13 on: June 27, 2005, 07:55:40 AM »
@dnelsonfl:

Many thanks for your help!!!

I've discovered the problem... I needed to close a jumper near the "Sync" chip on the board.

What can I say...? Amiga with a graphic card is simply fantastic!  :-D
 
With my monitor, I can use all screenmodes up to 1024x768 8bit. Unfortunately at 1024x768 16bit doesn't work so I've chosen 800x600 24bit... very very nice!!!

Thanks again!!!
Alex
A1000 - A2000 (020/16) - A3000 (060/50) - A500 - A500+ - A600 - A1200 (030/50) - CDTV - CD32

AN AMIGA WEB RESOURCE