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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Sun Jul 01, 2018 3:15 am 


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Joined: 09 Aug 2017
Posts: 905
Location: Australia
Could use a 3.5mm video jack. It's only 4 wires for flashing tight? Nice easy neat hole..

Or even just leaving some ribbon floating inside the console so you just have to take the top off instead of a million screws to get to the bottom.


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Sun Jul 01, 2018 4:07 am 



Joined: 19 Jul 2017
Posts: 582
citrus3000psi wrote:
Extrems wrote:
I wouldn't be so sure.


Clearly it’s possible more updates could happen. But they will be probably be few and far between (that’s assuming there will be some) and I don’t think it warrants a update cable hanging out the console .

Assuming this isn't already the case, would it warrant a Mini/Micro USB port on the board, so you'd only have to take off the console's shell and connect a cable to perform an update?


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Sun Jul 01, 2018 5:14 am 


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Lol. Suggesting a pcb rework and adding a usb header for the 2-3 potential updates is not gonna happen.

It's a good bet it'll be flashed with a usb blaster which is a 10 pin plug anyway.


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Sun Jul 01, 2018 4:23 pm 


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Syntax wrote:
Lol. Suggesting a pcb rework and adding a usb header for the 2-3 potential updates is not gonna happen.

It's a good bet it'll be flashed with a usb blaster which is a 10 pin plug anyway.


SPI which is 6 pin I believe
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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Wed Jul 18, 2018 7:50 am 



Joined: 07 Feb 2018
Posts: 116
Location: Austria
I also got a NTSC gamecube with the gcdual mod now directly from citrus300psi and I am really happy with it. the HDMI mod is really great. perfect Image Quality. Like the Image more than the rgb scart Image with my pal gamecube over the Framemeister.

This a more academic question because I do not see a real reason to go back to RGB scart, but in case I want to that, which RGB Scart cable would be needed for that matter? My old RGB Scart cable made for a Pal System is not working on the NTSC cube. Are there some RGB Scart cable out there that are working on a NTSC cube or this impossible and if I want a analog option I Need to go S-Video?

If I am not mistaking ntsc cubes only ouput S-Video and and only the pal models have RGB but maybe some smart People found ways to Bypass that problem or is that impossible?


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Wed Jul 18, 2018 9:33 am 


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Joined: 20 Jul 2017
Posts: 258
If you have a GCDual installed then you can use an NTSC SNES CSYNC cable for RGB, assuming JP2 is shorted on the mod board.

I'm not sure what citrus3000psi's standard install is so he may need to chime in on this, but I would guess it's configured to work with the standard SNES cable (like the ones he recommends here).


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Wed Jul 18, 2018 10:43 am 



Joined: 21 Aug 2016
Posts: 311
That's what I'm using. Works great and supports 480p :)


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Wed Jul 18, 2018 1:08 pm 



Joined: 07 Feb 2018
Posts: 116
Location: Austria
Ok good to know. Thanks a lot for the information :)


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Thu Sep 13, 2018 6:47 am 



Joined: 19 Mar 2017
Posts: 26
FBX wrote:
Current HDMI solutions for the Gamecube are incapable of this level of clarity on GBI playback of GBA games (or so I'm told anyway). Indeed when I tried the new driver on EON GCHD, it ended up looking completely smeared. Very interesting how it ends up improving the PQ on the OSSC, yet makes it worse on HDMI output.


Have there been any updates or new HDMI solutions that address this issue, anyone know?

Maybe https://insurrectionindustries.com/prod ... -preorder/ ???

Edit: ah it looks like it’s a gcvideo dvi issue.


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Thu Sep 13, 2018 2:41 pm 


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Location: Indiana
strayan wrote:
FBX wrote:
Current HDMI solutions for the Gamecube are incapable of this level of clarity on GBI playback of GBA games (or so I'm told anyway). Indeed when I tried the new driver on EON GCHD, it ended up looking completely smeared. Very interesting how it ends up improving the PQ on the OSSC, yet makes it worse on HDMI output.


Have there been any updates or new HDMI solutions that address this issue, anyone know?

Maybe https://insurrectionindustries.com/prod ... -preorder/ ???

Edit: ah it looks like it’s a gcvideo dvi issue.



So, there are a few problems going on so I will try to explain them the best I can. The GBA has a strange resolution that doesn't play nice with 240p/480p. So to get the best image quality available GBI was written using some "off spec" resolutions ie 320p etc. GC-Video DVI was incompatible as it was only setup to use 240p/480p etc signals. Unseen said at one point he had no intentions of making these off spec resoltions. As Gamecube games worked and that was his goal.

Now with GCVideo 2.5 I'm not sure if this problem (If you want to call it that) will be addressed. The chroma issue will be fixed though.

I have not checked out the most recent GBI, but the smearness I'm guessing is from the upscaling the GBI software is using to be able to get GC-Video to play nice.


Now there is fork of gc-video that chriz2600 and I have worked on. This allows for a Direct YPbPr mode, that dumps the signal off before the DVI reblanking happens. So the custom GBI resolutions work (Assuming your TV will accept them) and the chroma bug isn't an issue in the direct mode, as the YPbPr to RGB conversion never happens.

But clearly, this will not work over HDMI, just any dual output supported GC-Video device.

https://github.com/citrus3000psi/gcvideo


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Thu Sep 13, 2018 3:16 pm 



Joined: 21 Aug 2016
Posts: 311
citrus3000psi wrote:
strayan wrote:
FBX wrote:
Current HDMI solutions for the Gamecube are incapable of this level of clarity on GBI playback of GBA games (or so I'm told anyway). Indeed when I tried the new driver on EON GCHD, it ended up looking completely smeared. Very interesting how it ends up improving the PQ on the OSSC, yet makes it worse on HDMI output.


Have there been any updates or new HDMI solutions that address this issue, anyone know?

Maybe https://insurrectionindustries.com/prod ... -preorder/ ???

Edit: ah it looks like it’s a gcvideo dvi issue.



So, there are a few problems going on so I will try to explain them the best I can. The GBA has a strange resolution that doesn't play nice with 240p/480p. So to get the best image quality available GBI was written using some "off spec" resolutions ie 320p etc. GC-Video DVI was incompatible as it was only setup to use 240p/480p etc signals. Unseen said at one point he had no intentions of making these off spec resoltions. As Gamecube games worked and that was his goal.

Now with GCVideo 2.5 I'm not sure if this problem (If you want to call it that) will be addressed. The chroma issue will be fixed though.

I have not checked out the most recent GBI, but the smearness I'm guessing is from the upscaling the GBI software is using to be able to get GC-Video to play nice.


Now there is fork of gc-video that chriz2600 and I have worked on. This allows for a Direct YPbPr mode, that dumps the signal off before the DVI reblanking happens. So the custom GBI resolutions work (Assuming your TV will accept them) and the chroma bug isn't an issue in the direct mode, as the YPbPr to RGB conversion never happens.

But clearly, this will not work over HDMI, just any dual output supported GC-Video device.

https://github.com/citrus3000psi/gcvideo


What's the status on that, by the way? Looking forward to updating my GCVideo when it's done :)


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Thu Sep 13, 2018 3:55 pm 


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Joined: 30 Jan 2016
Posts: 193
You think I made those resolutions just for GBI?

https://files.extremscorner.org/gamecube/screenshots/grab001917.png

That's captured with the pickiest capture device ever, the Blackmagic Intensity Shuttle.


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Thu Sep 13, 2018 6:58 pm 


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Joined: 25 Dec 2013
Posts: 555
Location: Indiana
thebigcheese wrote:

What's the status on that, by the way? Looking forward to updating my GCVideo when it's done :)


I'm somewhat waiting for unseen to release 2.5. I'm not sure what is in store for us. That's why I'm not pushing the fork on my git. As my fixes are bandaids. Not proper.


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Fri Sep 14, 2018 1:19 am 



Joined: 19 Mar 2017
Posts: 26
citrus3000psi wrote:
strayan wrote:
FBX wrote:
Current HDMI solutions for the Gamecube are incapable of this level of clarity on GBI playback of GBA games (or so I'm told anyway). Indeed when I tried the new driver on EON GCHD, it ended up looking completely smeared. Very interesting how it ends up improving the PQ on the OSSC, yet makes it worse on HDMI output.


Have there been any updates or new HDMI solutions that address this issue, anyone know?

Maybe https://insurrectionindustries.com/prod ... -preorder/ ???

Edit: ah it looks like it’s a gcvideo dvi issue.



So, there are a few problems going on so I will try to explain them the best I can. The GBA has a strange resolution that doesn't play nice with 240p/480p. So to get the best image quality available GBI was written using some "off spec" resolutions ie 320p etc. GC-Video DVI was incompatible as it was only setup to use 240p/480p etc signals. Unseen said at one point he had no intentions of making these off spec resoltions. As Gamecube games worked and that was his goal.

Now with GCVideo 2.5 I'm not sure if this problem (If you want to call it that) will be addressed. The chroma issue will be fixed though.

I have not checked out the most recent GBI, but the smearness I'm guessing is from the upscaling the GBI software is using to be able to get GC-Video to play nice.


Now there is fork of gc-video that chriz2600 and I have worked on. This allows for a Direct YPbPr mode, that dumps the signal off before the DVI reblanking happens. So the custom GBI resolutions work (Assuming your TV will accept them) and the chroma bug isn't an issue in the direct mode, as the YPbPr to RGB conversion never happens.

But clearly, this will not work over HDMI, just any dual output supported GC-Video device.

https://github.com/citrus3000psi/gcvideo


Cool thanks for such a comprehensive answer. Does the chroma issue affect any regular gamecube games or just gba?


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Fri Sep 14, 2018 1:24 am 


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Posts: 193
It affects everything.


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Fri Sep 14, 2018 1:41 am 



Joined: 19 Mar 2017
Posts: 26
Extrems wrote:
It affects everything.


Unacceptable! :P


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Fri Sep 14, 2018 4:18 am 


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Location: Kentucky
As I understand it the chroma "issue" is just that GCVideo converts YCbCr to RGB, rather than your display doing it? I get that it can mess with some custom resolution stuff, but is it really that big of a deal for Gamecube games?


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Fri Sep 14, 2018 4:56 am 


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The real issue is the timing bug in said conversion.


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Fri Sep 14, 2018 5:17 am 


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Location: Kentucky
Ah, did not know there was a bug in the conversion. That's definitely an issue, sorry.


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Fri Sep 14, 2018 5:27 am 


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Er, it was pinpointed in the last page and confirmed by Unseen.

See https://www.gc-forever.com/wiki/index.php?title=Game_Boy_Interface/High-Fidelity_Edition#Video_quality for a clearer comparison (these are thumbnails).


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Fri Sep 14, 2018 12:48 pm 


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Location: Indiana
Just to be clear, on the GCDual when using YPbPr works fine (no chroma bug). The YCbCr to RGB conversion happens at the very end the datapipe and YCbCr is dumped out before the conversion.


I just adapted GC-Video lite (doesn't have the chroma bug) YUV->RGB conversion to GC-Video DVI. And it compiled I will test later on real hardware. One negative to this is that limited RGB range is no longer an option. So I'm trying to add that back in. I'm very much an amateur at VHDL.


Last edited by citrus3000psi on Fri Sep 14, 2018 3:57 pm, edited 1 time in total.

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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Fri Sep 14, 2018 3:50 pm 


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Location: Kentucky
Extrems wrote:
Er, it was pinpointed in the last page and confirmed by Unseen.

See https://www.gc-forever.com/wiki/index.php?title=Game_Boy_Interface/High-Fidelity_Edition#Video_quality for a clearer comparison (these are thumbnails).


I had forgotten about that- last page, which I should have checked, but also back in June to be fair.


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Fri Sep 14, 2018 6:53 pm 


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Since I can't seem to find enough time to finish 2.5 any time soon, I've uploaded 2.4b with a single change: The 1-pixel-shift of the green color channel is fixed.


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Fri Sep 14, 2018 7:11 pm 


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Thank you.


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Fri Sep 14, 2018 7:21 pm 


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Unseen wrote:
The 1-pixel-shift of the green color channel is fixed.


Never heard of this issue, what was it?


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Fri Sep 14, 2018 7:31 pm 


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Lawfer wrote:
Unseen wrote:
The 1-pixel-shift of the green color channel is fixed.


Never heard of this issue, what was it?


https://shmups.system11.org/viewtopic.php?p=1323030#p1323030
Or
https://www.gc-forever.com/wiki/index.php?title=Game_Boy_Interface/High-Fidelity_Edition#Video_quality

As Extrems already pointed out to me.


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Fri Sep 14, 2018 9:07 pm 


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Unseen wrote:
Since I can't seem to find enough time to finish 2.5 any time soon, I've uploaded 2.4b with a single change: The 1-pixel-shift of the green color channel is fixed.

Outstanding


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 Post subject: Re: Cloning the Gamecube component cable
PostPosted: Sat Sep 15, 2018 3:48 pm 


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Updated comparisons with new firmware simulation.

If you have a RGB 4:4:4 capture device, you can now bypass the interpolation in GBIHF by dropping every other column.


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