Amiga.org
Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: guest1255 on August 02, 2004, 01:34:02 PM
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Might be a very stupid question but anyway..
Is scandoubler same as flickerfixer or what is the difference?
br.Apache2k
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A scandoubler converts the Amiga's PAL/NTSC signal (~15 Khz), into a VGA compatible format (~31 Khz).
In essence, it doubles the original horizontal scanrate, since PC monitors can't display anything below 31Khz.
A flickerfixer is an extended version of a scandoubler, it both doubles the scanrate (so a PC monitor can display the Amiga native PAL/NTSC modes) and adds a memory buffer.
This memory buffer is used to 'deinterlace' the interlaced screenmodes, so the don't 'flicker' on the screen anymore.
Ofcourse, the scandboubler won't work on a ECS/AGA non-PAL/NTSC mode (such as DoublePal or Super72).
FlickerFixers might deinterlace those 'extended' modes, but that varies according to model and make.
Hope this helps!
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wow,,
Thanks alot. And yes it did help.
Apache2k
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Now i have a Flicker fixer and a graphic card to my a2000
Where do i stick the vga display? ( 3 ports on my amiga for display ) ?
TIA
Apache2k
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What model gfx card and flickerfixer do you have installed?
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I have the CyberVision 64/3D (Electronic Design)FilickerFixer v1.
Apache2k
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OK AFAIR the display should come out of the scandoubler, but I also seem to recall that the scandoubler only works correctly with the A4000, hang on a tick I'll have a look....and fix some typos :-)
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....from the big book of amiga hardware:
CV64/3D
A companion scan-doubler card was also made for this graphics card which is designed to fit AGA-style video slots. A monitor switcher and MPEG Card were also planned, although the MPEG card was made, it was never released to the public. The scandoubler does not work fully in non-AGA systems, the native display is not scandoubled but is simply passed through.
The site also has a manual for the scandoubler for download.
http://www.amiga-hardware.com/
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But i have the Flicker fixer on the video slot of the A2000B.. not a scandoubler. Is it anyways the same result?
Or Is the gfx card already doing the work of the flickerfixer?
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Sorry missread, thought was the module for the CV64/3D!
Try the FFixer display, the CV64/3d doesn't have a passthrough like the CV64 that I have, on my system the cable comes out of the 31KHz port of the FFixer then into the CV64 then out to the monitor. You might need a passthru box like the BMon that Eyetech sold. Try it and see it the CV64/3d modes can be displayed with the FFixer output. Use the USE button on the screenmode so if you can't see the CV64/3d display you can just reboot to get back to a useable screen mode. Your FFixer sould display PAL/NTSC Hires laced ok on a svga.
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Ok, thank you very much , ill try that and let know.. if i still have a working amiga after this operation or will it turn all black with flames on it :))
Apache2k
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:-)
Good luck! Should be ok though!
You might end up having to use 2 monitors or one of those monitor switchboxes, since the displays are both svga a pc switcher should work?? Emial Eyetech in the UK they might have some BMons left or might be able to advise your best course of action to get your system running.
TTFN!
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Guess what, the CyberVision didnt work, yellow screen, then i took some memory off, black screen and the hd dint run..the Amiga vas frozen... i think thats it for me, ill sell it away and use the original good Amiga 500.
Br. Apache2k
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Has anyone A CyberVision 64/3D on an Amiga 2000?
Now i have almost all the stuff i need and also getting a New A2000 ( old one is ill :) )
Can i connect my CV direct to my A2000 (68020@17 or 20MHz )
Does this combination work? I have also the flickerfixer on the videoslot of A2000..
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@Apache2k:
You need to make sure that you have no more than 4MB fastmem mapped in the Zorro2 address-space. This is because the Zorro2 address-space is only 8MB big and the CV64/3D needs 4MB of it to map its Video-RAM. Fastmem on Zorro2-cards is always mapped in the Zorro2 address-space and so is often the 32-bit fastmem on many turbocards. My advice would be that you make sure you have a maximum of 4MB fastmem in your system and then try the CV64/3D. What turbocard do you have btw?
/Patrik
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Another important thing that he needs to find out is if CV64/3D works with 68020 cpus. Perhaps the minimum required is 68030?
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Turbo: Hurricane A500/A2000 is this ok?
And is this max memory olso including the system chip 1 mb memory?
My only problem/thing that i dont know is:
I have also the flickerfixer, is this also needed or is it useless with the CV. Can i just plub the CV and a vga and use the high resulutions?
Thank you.
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@Apache2k:
This maximum amount of Zorro2-mapped fastmem does not include the chipmem.
The flickerfixer will be useful for displaying the native Amiga chipset output on a VGA-monitor as the CV64/3D will not take over the role of the Amiga chipset. To display something via the CV64/3D you will have to use either CyberGraphX or Picasso96 which is are two "gfx-card systems" to allow you to display system-friendly software on addon gfx-cards like amongst others - the CV64/3D. To have easy access to both the Amiga chipset output and the CV64/3D output, you will either have to use a monitor-switcher to switch between the two outputs (CV64/3D and the flickerfixer) or two use two monitors - one connected to the CV64/3D and one connected to the flickerfixer.
I also take for granted that the CV64/3D will need 4MB of continuous Zorro2 address-space. To verify that there is atleast 4MB continuous Zorro2 address-space, you can type 'showconfig' in a shell to see where the systems memory is mapped and then use those addresses to calculate if there is a continious gap of atleast 4MB where nothing is mapped in the 8MB Zorro2 address-space which ranges from address 0x200000 to 0xA00000. If that aint the case even if you have a max of 4MB fastmem, I am quite sure you can change where the Hurricane 500 maps its memory as that is controlled by the Hurricane 500 software.
/Patrik
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Hmm, i see... and are CyberGraphX / Picasso96 software or hardware? If hardware then are they for free?
Thanks again..
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@Apache2k:
The hardware is in your case the CV64/3D. CyberGraphX and Picasso96 are software-packages which in essense adds the resolutions available on your CV64/3D as normal screenmodes in your system.
Picasso96 is shareware and can be found information about here (http://www.picasso96.cogito.de/) and can be downloaded here (http://www.picasso96.cogito.de/download/Picasso96/Picasso96.lha).
CyberGraphX is a commercial product and you can find information about it here (http://vgr.com/v4/). The previous version of CyberGraphX - version 3 is free and can be found info about here (http://vgr.com/v3/) and here (http://www.vgr.com/v3/v3faq.html) and can be downloaded here (http://www.vgr.com/meanmachine/cgxv41_r71.lha).
If that 4MB continious Zorro2 address-space calculation sounded quirky, post the output of showconfig here and I can help you with it.
/Patrik
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Thank you a billion time to being patient with my question.
I think i did get good information now and will try these things :) and let you know what happen.
Apache2k