S-Video and Composite Over Component Output! (Custom Cores)

[antoniovillena]

Does this adapter/circuit have the same problems/incompatibility with the Commodore 1701/1702 montiors that your other composite adapter has ?

I don't know because I have not that monitor to test. But someone with that monitor can try.

[shertz]

Does this adapter/circuit have the same problems/incompatibility with the Commodore 1701/1702 montiors that your other composite adapter has ?

I don't know because I have not that monitor to test. But someone with that monitor can try.

If you want to send me one, I can test it on my 1702 and let you know. If it works I'll buy it LOL.

Right now I'm using the method of component cable and the custom cores and it seems to work fine on the 1702.

[antoniovillena]

Does this adapter/circuit have the same problems/incompatibility with the Commodore 1701/1702 montiors that your other composite adapter has ?

I don't know because I have not that monitor to test. But someone with that monitor can try.

If you want to send me one, I can test it on my 1702 and let you know. If it works I'll buy it LOL.

Right now I'm using the method of component cable and the custom cores and it seems to work fine on the 1702.

I will send one unit to a Spanish guy to test. If confirm working I will inform in this thread

[matijaerceg]

No, as I know. But he can confirm.

How are you testing your units then, if not with Mike's cores?

[antoniovillena]

No, as I know. But he can confirm.

How are you testing your units then, if not with Mike's cores?

Yes. I've tested my units with Mike's cores. But I don't know if he implements luma trap for NTSC and PAL or only for one of them. We must wait his confirmation or when he publish his schematics

[matijaerceg]

Yes. I've tested my units with Mike's cores. But I don't know if he implements luma trap for NTSC and PAL or only for one of them. We must wait his confirmation or when he publish his schematics

Ah, apologies, I must have misunderstood - I thought you were saying his cores don't send the 0 or 1 for pal/ntsc selection on pin 14. But now I understand that you're saying his cores work fine with your adapter.

[MikeS1]

Oh awesome another design

I have this almost ready to go as well, was just finishing up testing:

PXL-20220506-033708749.jpg (4.28 MiB) Viewed 6173 times

PXL-20220506-033217733.jpg (7.46 MiB) Viewed 6173 times

PXL-20220506-033141213.jpg (3.54 MiB) Viewed 6173 times

Except its for NTSC only, it uses a 6.8uH Inductor and a 300pF capacitor for the NTSC luma trap.

[MikeS1]

Does this adapter/circuit have the same problems/incompatibility with the Commodore 1701/1702 montiors that your other composite adapter has ?

You don't need any adapters if you have a 1702, I designed the cores to work perfectly with my 1702, it was probably the main reason I worked on the Y/C framework.

You just need a VGA to component cable

[LamerDeluxe]

I just managed to order one of antoniovillena's adapters. Really looking forward to trying this.

I hope there will be a VIC-20 core version with support for it as well, as that was my first computer, so composite will look closer to how I normally use it.

But more than that, I hope that this will become standard core functionality on MiSTer.

[AmintaMister]

Just to understand: I have the VGA->Composite/S-Video adapter of Antonio (https://www.antoniovillena.es/store/pro ... o-adapter/) and I connect it via component to my Trinitron and I use the "normal" cores. What is the difference with the MikeS1 cores?

Thanks!

[LamerDeluxe]

Just to understand: I have the VGA->Composite/S-Video adapter of Antonio (https://www.antoniovillena.es/store/pro ... o-adapter/) and I connect it via component to my Trinitron and I use the "normal" cores. What is the difference with the MikeS1 cores?

Thanks!

This new technique, applied to the modified cores, outputs an Y/C signal directly from the VGA output, without any conversion (with a VGA to component cable you can use Y/C directly). For composite, it needs a luma trap added, so you don't get artifacts. This is what the much more simple adapter that Antonio also sells does (combines Y and C with a luma trap for composite, as well as providing an S-VHS connector and PAL/NTSC support).

[AmintaMister]

Just to understand: I have the VGA->Composite/S-Video adapter of Antonio (https://www.antoniovillena.es/store/pro ... o-adapter/) and I connect it via component to my Trinitron and I use the "normal" cores. What is the difference with the MikeS1 cores?

Thanks!

This new technique, applied to the modified cores, outputs an Y/C signal directly from the VGA output, without any conversion (with a VGA to component cable you can use Y/C directly). For composite, it needs a luma trap added, so you don't get artifacts. This is what the much more simple adapter that Antonio also sells does (combines Y and C with a luma trap for composite, as well as providing an S-VHS connector and PAL/NTSC support).

Thanks!

[shertz]

Lu now has a video about this...

https://youtu.be/DBy_XPmieKc

[riblad_om]

Lu's video says you need to go to s-video before composite, but I'm just going component straight to composite with no s-video in between. Am I going to break something doing it this way?

edit: apparently there's a possibility of damage, gonna grab those s-video cables

[green_onion]

Lu's video says you need to go to s-video before composite, but I'm just going component straight to composite with no s-video in between. Am I going to break something doing it this way?

edit: apparently there's a possibility of damage, gonna grab those s-video cables

Out of curiosity, what would the risk of damage be?

I'm also using a VGA->Component to Composite with no S-Video between them. The result looks fine for NES/SNES/PCE, but MD/SCD/NG/PS1 cores have much more distracting rainbow banding and artifacts.

[dmckean]

Lu's video says you need to go to s-video before composite, but I'm just going component straight to composite with no s-video in between. Am I going to break something doing it this way?

edit: apparently there's a possibility of damage, gonna grab those s-video cables

Out of curiosity, what would the risk of damage be?

I'm also using a VGA->Component to Composite with no S-Video between them. The result looks fine for NES/SNES/PCE, but MD/SCD/NG/PS1 cores have much more distracting rainbow banding and artifacts.

You'll be outputting about .65 volts over spec. You'll basically slowly kill your TV circuitry over time running that way.

[green_onion]

Lu's video says you need to go to s-video before composite, but I'm just going component straight to composite with no s-video in between. Am I going to break something doing it this way?

edit: apparently there's a possibility of damage, gonna grab those s-video cables

Out of curiosity, what would the risk of damage be?

I'm also using a VGA->Component to Composite with no S-Video between them. The result looks fine for NES/SNES/PCE, but MD/SCD/NG/PS1 cores have much more distracting rainbow banding and artifacts.

You'll be outputting about .65 volts over spec. You'll basically slowly kill your TV circuitry over time running that way.

Good to keep in mind. I'll look into adding an S-Video step to the chain. Thanks!

[shertz]

ZEZ has another video about this subject. This one is a little more in depth....

https://youtu.be/Swu4-LK8Fns

[LamerDeluxe]

I received the adapter from Antonio today. I'm having a lot of color artifacts with it. I've been communicating with MikeS1, to correct dynamic color artifacts in PAL mode. But right now it looks like the luma trap might not be working correctly.

Also if you order it with a housing, the housing says PAL/NTSC vertically. But the switch works horizontally and switches between s-video and composite.

My advice would be to hold off on ordering right now, until it becomes clear what is causing the color artifacts.

[antoniovillena]

I received the adapter from Antonio today. I'm having a lot of color artifacts with it. I've been communicating with MikeS1, to correct dynamic color artifacts in PAL mode. But right now it looks like the luma trap might not be working correctly.

Also if you order it with a housing, the housing says PAL/NTSC vertically. But the switch works horizontally and switches between s-video and composite.

My advice would be to hold off on ordering right now, until it becomes clear what is causing the color artifacts.

Hi. Thank you for the advice. I will halt the item without stock until MikeS1 receive his one and we can fix the problem. About housing I am using the same housing of the other adapter. In future designs I can flip the top to hide the PAL/NTSC texts by swapping the SVIDEO and Composite connectors.

[matijaerceg]

I received the adapter from Antonio today. I'm having a lot of color artifacts with it. I've been communicating with MikeS1, to correct dynamic color artifacts in PAL mode. But right now it looks like the luma trap might not be working correctly.

Also if you order it with a housing, the housing says PAL/NTSC vertically. But the switch works horizontally and switches between s-video and composite.

My advice would be to hold off on ordering right now, until it becomes clear what is causing the color artifacts.

Hi. Thank you for the advice. I will halt the item without stock until MikeS1 receive his one and we can fix the problem. About housing I am using the same housing of the other adapter. In future designs I can flip the top to hide the PAL/NTSC texts by swapping the SVIDEO and Composite connectors.

Antonio, how did you test your units exactly?

[antoniovillena]

I received the adapter from Antonio today. I'm having a lot of color artifacts with it. I've been communicating with MikeS1, to correct dynamic color artifacts in PAL mode. But right now it looks like the luma trap might not be working correctly.

Also if you order it with a housing, the housing says PAL/NTSC vertically. But the switch works horizontally and switches between s-video and composite.

My advice would be to hold off on ordering right now, until it becomes clear what is causing the color artifacts.

Hi. Thank you for the advice. I will halt the item without stock until MikeS1 receive his one and we can fix the problem. About housing I am using the same housing of the other adapter. In future designs I can flip the top to hide the PAL/NTSC texts by swapping the SVIDEO and Composite connectors.

Antonio, how did you test your units exactly?

I've tried NES core with some games and I did not see nothing strange

[matijaerceg]

Antonio, how did you test your units exactly?

I've tried NES core with some games and I did not see nothing strange

NES doesn't have much rainbow artifacts to begin with.

Are you able to test Genesis core via composite (since it has a lot of rainbow artifacts via composite usually) and maybe post results?

[antoniovillena]

Are you able to test Genesis core via composite (since it has a lot of rainbow artifacts via composite usually) and maybe post results?

Ok. I will try during this weekend. I consider discard this version of the cheapo board and when the new version it's available I'll replace (send new boards) to buyers of current one.

[passballtotucker]

Yeah I got just got Antonio's adapter today and it doesn't look any different than just using component to s-video to composite. It is more convenient though, but It doesn't look like it has a luma trap.

[matijaerceg]

Yeah I got just got Antonio's adapter today and it doesn't look any different than just using component to s-video to composite. It is more convenient though, but It doesn't look like it has a luma trap.

Better wait for the revised board I guess.. Or for Mike's boards, which are actually being meticulously tested.

[shertz]

Thank you Mike for making these custom cores to use S-video. I have 2 Mitsubishi 33" Megaview PVM's, 2 Sony 19" PVM's, and about a half dozen monitors with component inputs. I gotta say that I am really enjoying playing my MiSTer on my Commodore 1702 monitor. This is to me true nostalgia. I grew in the 80's playing on home computers and consoles on a 13" screen. Its an added bonus that i now get to play them on nice crisp S-video. Thanks again for all your effort. Looking forward to getting your S-video/ composite dongle.

P.S. please add the odyssey2 to your list of cores.

[MikeS1]

The 1702 is why I started this journey

I'lll add the Odyssey2 and a couple more this weekend . I've been spending too much time trying to prototype different breakout board designs. But happy I have one out open source right now.

[riblad_om]

Has anyone come up with an elegant solution to the Arcade cores? Right now it seems like you have to put them in the arcade folder, eyeball version numbers to make sure you delete the right thing, then make sure you don't update your arcade cores so they don't get replaced, but I don't really know how the mister file structure works.

[matijaerceg]

Has anyone come up with an elegant solution to the Arcade cores? Right now it seems like you have to put them in the arcade folder, eyeball version numbers to make sure you delete the right thing, then make sure you don't update your arcade cores so they don't get replaced, but I don't really know how the mister file structure works.

Maybe put it into an _ArcadeYC folder? See https://www.atari-forum.com/viewtopic.php?t=34832