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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Mon Sep 07, 2020 2:17 pm 


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Joined: 27 Jan 2005
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superg wrote:
MJR wrote:
C128D goes into gscartw with SCART cable, which I assume has to be S-video.
From the gscartw I use the 2nd output with SCART<>RCA connector in output mode, and I use the yellow connector (in tv front). This gives grey image. Black connector/audio works ok as expected.

So that's pretty much explains it. You're sending S-Video signal on input but trying to get composite signal on output. The switch doesn't transcode the signal, I mentioned this before - no conversions between composite<->component<->s-video<->RGBS. In order to get composite signal working on your TV, you have to supply composite signal on input.


Ahh, ok, I'm sorry, I must have been confused by all this. I don't have a connector for C64/c128D that would output composite signal. I don't even know if such things exist. But that's fine, I can play c64/c128 on aerial cable anyway.


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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Mon Sep 07, 2020 2:26 pm 


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MJR wrote:
Ahh, ok, I'm sorry, I must have been confused by all this. I don't have a connector for C64/c128D that would output composite signal. I don't even know if such things exist. But that's fine, I can play c64/c128 on aerial cable anyway.

I guess something like this:
https://www.8bitclassics.com/product/c64-svideo/
and this:
https://www.amazon.com/Female-Adapter-C ... ics&sr=1-1
will work for you.
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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Mon Sep 07, 2020 4:42 pm 


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mcole24 wrote:
One possibility that I have thought about was getting a second gcompsw. I can connect composite systems to the second gcompsw, run that composite output through the Koryuu transcoder, and then connect that to the first gcompsw. However, I am wondering if that might not cause the same issue I'm experiencing with the OSSC. In other words, if the Koryuu is always on, would that cause the first gcompsw to think it's always getting an input and cause issues switching?

You're right, if you go with the second gcompsw and connect Koryuu transcoder to one of it's inputs, it will instantly lock on it's sync so that won't solve the problem.
Unfortunately I don't see a solution to this as is. I googled a bit about Koryuu, seems like a nice open source project, maybe you can contact the author so he can try to change the firmware so it doesn't output sync if nothing is connected. Of course if that is even possible, I'm not familiar with their hardware design.
The potential other solution would be to mod your composite consoles so they output component or RGBS but that would be a big task.
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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Mon Sep 07, 2020 5:53 pm 


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Joined: 27 Jan 2005
Posts: 1080
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superg wrote:
MJR wrote:
Ahh, ok, I'm sorry, I must have been confused by all this. I don't have a connector for C64/c128D that would output composite signal. I don't even know if such things exist. But that's fine, I can play c64/c128 on aerial cable anyway.

I guess something like this:
https://www.8bitclassics.com/product/c64-svideo/
and this:
https://www.amazon.com/Female-Adapter-C ... ics&sr=1-1
will work for you.


Thank you, ordered :)


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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Mon Sep 07, 2020 6:46 pm 



Joined: 01 Mar 2018
Posts: 525
superg wrote:
mcole24 wrote:
One possibility that I have thought about was getting a second gcompsw. I can connect composite systems to the second gcompsw, run that composite output through the Koryuu transcoder, and then connect that to the first gcompsw. However, I am wondering if that might not cause the same issue I'm experiencing with the OSSC. In other words, if the Koryuu is always on, would that cause the first gcompsw to think it's always getting an input and cause issues switching?

You're right, if you go with the second gcompsw and connect Koryuu transcoder to one of it's inputs, it will instantly lock on it's sync so that won't solve the problem.
Unfortunately I don't see a solution to this as is. I googled a bit about Koryuu, seems like a nice open source project, maybe you can contact the author so he can try to change the firmware so it doesn't output sync if nothing is connected. Of course if that is even possible, I'm not familiar with their hardware design.
The potential other solution would be to mod your composite consoles so they output component or RGBS but that would be a big task.


It's pretty much the same with any always outputting device, no? Don't the Retrotink devices suffer from this as well? But we had a discussion in the Koryuu thread about this fix. The designer released a new firmware, but upgrading isn't as easy as with the OSSC! Check it out here:
viewtopic.php?f=6&t=65602&start=90


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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Mon Sep 07, 2020 7:05 pm 


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ldeveraux wrote:
It's pretty much the same with any always outputting device, no? Don't the Retrotink devices suffer from this as well? But we had a discussion in the Koryuu thread about this fix. The designer released a new firmware, but upgrading isn't as easy as with the OSSC! Check it out here:
viewtopic.php?f=6&t=65602&start=90

RetroTink is fine, it's just keeps sync line high when it's off and that shows artifacts when nothing is turned on, but this is minor.
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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Wed Sep 09, 2020 6:51 pm 



Joined: 01 Sep 2020
Posts: 2
superg wrote:
First time I hear this, what exactly is misaligned? All panels are precisely laser cut. Sometimes you have to fiddle with the SCART connectors a bit to get all of them inside the plexi openings. I have some spare panels but they are all the same. If you bent something installing the bumper case maybe you didn't do it right.


The openings are the correct size, but getting one set of openings inside leaves the other set slightly off. Should I try loosening the bolts holding in the SCART connectors, then?

https://photos.app.goo.gl/cZWvaeXzvFxxPbCR7

https://photos.app.goo.gl/gHHxT23UiUUTvzRx9


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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Wed Sep 09, 2020 10:10 pm 


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Bonus Lizard wrote:
superg wrote:
First time I hear this, what exactly is misaligned? All panels are precisely laser cut. Sometimes you have to fiddle with the SCART connectors a bit to get all of them inside the plexi openings. I have some spare panels but they are all the same. If you bent something installing the bumper case maybe you didn't do it right.


The openings are the correct size, but getting one set of openings inside leaves the other set slightly off. Should I try loosening the bolts holding in the SCART connectors, then?

https://photos.app.goo.gl/cZWvaeXzvFxxPbCR7

https://photos.app.goo.gl/gHHxT23UiUUTvzRx9

That is generally easy to overcome by lining them one by one starting from the connector which doesn't fit.
You can either use your fingers to force the connector in place or insert any SCART cable into the connector and use it as leverage - that will make it easier.
Loosening the screws is not required but might help a bit, when I assemble cases here I first tighten the screws and put the top panel last.
Try whichever works for you.
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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Fri Sep 11, 2020 9:22 am 



Joined: 29 Jul 2020
Posts: 1
So I've been thinking about adding my Genesis and Ps1 to my Gcomp via composite despite using them already with RGB through my Gscart, for those few games where I prefer dithering to be blurred. Will I need a separate composite male2male cable on the 2nd output of my Gcomp, or can I output composite through the Component Male2Male cable I already have in output1?


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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Sat Sep 12, 2020 6:01 pm 



Joined: 05 Mar 2017
Posts: 415
Location: Woodinville, WA
Is there a recommended short SCART cable to connect switches? I'd ask Retro Access to make one, but the earliest that will be is likely ~December.

The KabelDirekt ones from Amazon have worked well for me, but the shortest one they have is 6ft - I'd prefer something closer to 1ft.


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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Sat Sep 12, 2020 6:33 pm 


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strygo wrote:
Is there a recommended short SCART cable to connect switches? I'd ask Retro Access to make one, but the earliest that will be is likely ~December.

The KabelDirekt ones from Amazon have worked well for me, but the shortest one they have is 6ft - I'd prefer something closer to 1ft.

Mine is 1ft from retro access. KabelDirekt is not bad but yeah, 6ft.
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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Sat Sep 12, 2020 9:10 pm 



Joined: 01 Mar 2018
Posts: 525
superg wrote:
strygo wrote:
Is there a recommended short SCART cable to connect switches? I'd ask Retro Access to make one, but the earliest that will be is likely ~December.

The KabelDirekt ones from Amazon have worked well for me, but the shortest one they have is 6ft - I'd prefer something closer to 1ft.

Mine is 1ft from retro access. KabelDirekt is not bad but yeah, 6ft.


Haven't you (maybe it was someone else? ) tested those kabeldirect 6 footers and they were fine? Once you get over 6ft it's lossy, but this was fine I thought


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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Sat Sep 12, 2020 9:38 pm 


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ldeveraux wrote:
Haven't you (maybe it was someone else? ) tested those kabeldirect 6 footers and they were fine? Once you get over 6ft it's lossy, but this was fine I thought

I have one here and I am using it for switch testing, but I didn't really compare the quality. Somebody told me that longer run of KabelDirect is problematic but that was a long time ago.
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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Sun Sep 13, 2020 1:52 am 



Joined: 01 Mar 2018
Posts: 525
superg wrote:
ldeveraux wrote:
Haven't you (maybe it was someone else? ) tested those kabeldirect 6 footers and they were fine? Once you get over 6ft it's lossy, but this was fine I thought

I have one here and I am using it for switch testing, but I didn't really compare the quality. Somebody told me that longer run of KabelDirect is problematic but that was a long time ago.
I remember the same, I feel like it was Fudoh or someone else reputable.


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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Sun Sep 13, 2020 4:29 pm 


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Demonboyjr wrote:
So I've been thinking about adding my Genesis and Ps1 to my Gcomp via composite despite using them already with RGB through my Gscart, for those few games where I prefer dithering to be blurred. Will I need a separate composite male2male cable on the 2nd output of my Gcomp, or can I output composite through the Component Male2Male cable I already have in output1?

That will physically go through yellow output RCA, if your component cable have an additional yellow plug, you can use that. But that also depends on how your audio is routed.
In any case, the cleaner setup would be to get another composite + stereo audio RCA male to male cable.
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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Sun Sep 13, 2020 4:30 pm 



Joined: 19 Jul 2017
Posts: 1823
ldeveraux wrote:
superg wrote:
ldeveraux wrote:
Haven't you (maybe it was someone else? ) tested those kabeldirect 6 footers and they were fine? Once you get over 6ft it's lossy, but this was fine I thought

I have one here and I am using it for switch testing, but I didn't really compare the quality. Somebody told me that longer run of KabelDirect is problematic but that was a long time ago.
I remember the same, I feel like it was Fudoh or someone else reputable.

Prior to installing a DCHDMI in my Dreamcast, I used a 10ft Kabeldirekt SCART cable (They were about half the price of the 6ft ones at the time) to connecto my Toro to my OSSC, and I didn't notice any signal loss; though I suppose your mileage may vary.


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