Modless RGB and A/V Upgrade for TurboGrafx-16 and PC-Engine

[Jibbajaba]

Looks good!  Shame it doesn't do s-video, though.

[db-electronics]

Looks good!  Shame it doesn't do s-video, though.

Yes it does do S-Video.

[Necromancer]

Hooked on phonics did not work for Jibba. 

[NightWolve]

Here it is, revision B with CXA1645 now supporting Modless S-Video and RGB on TurboGrafx...

http://www.db-elec.com/home/lab-posts/dbgrafxbooster-redgreenbluechromaluma-ohmy

I've yet to do a comparison with a CXA2075 - that's on my list of things to do.

Furthermore, after a friend of mine asked: "Where's the S-Video?" I just knew the current dbGrafx Booster design was obsolete.

But where's the YPbPr/Component video

https://www.pcenginefx.com/forums/index.php?topic=19144.0

Sadly, it's mostly S-Video that's now gone obsolete in new TVs, so really, you'd rather have YPbPr but even then a % of them reject a 240p signal, so you gotta test the set - no guarantees.

[db-electronics]

Here it is, revision B with CXA1645 now supporting Modless S-Video and RGB on TurboGrafx...

http://www.db-elec.com/home/lab-posts/dbgrafxbooster-redgreenbluechromaluma-ohmy

I've yet to do a comparison with a CXA2075 - that's on my list of things to do.

Furthermore, after a friend of mine asked: "Where's the S-Video?" I just knew the current dbGrafx Booster design was obsolete.

But where's the YPbPr/Component video

https://www.pcenginefx.com/forums/index.php?topic=19144.0

The RGB is output on a mini DIN9 connector (a.k.a Genesis 2 A/V connector). You can therefore use any Genesis 2 SCART cable to get the RGB signals.

[NightWolve]

YPbPr/Component, not RGB.

https://www.pcenginefx.com/forums/index.php?topic=13231.0

[db-electronics]

Oh sorry, I misread that. Maybe a future rev?

[wilykat]

Since some TV do not like 240-anything over component, maybe a way to add a simple 480i upscaler on the component converter to make it more compatible with most modern TV?

Or would one need to buy a $300 upscaler to get good component?

[Jibbajaba]

Hooked on phonics did not work for Jibba. 

Lol.  I clicked on the link in the OP, which didn't have s-vid support.  Now I see the newer link with it added in.

I am definitely down for one of these whenever it gets released.  I was going to RGB-mod my little PC Engine, but I would rather just wait for this and save the RGB amp for something else...

[NightWolve]

Since some TV do not like 240-anything over component, maybe a way to add a simple 480i upscaler on the component converter to make it more compatible with most modern TV?

Or would one need to buy a $300 upscaler to get good component?

Correct, all you need is a resolution doubler/scaler to up it from 240p to 480p (or 480i) and that would guarantee more 9X% compatability with new LCD HDTVs, but that's a more complicated circuit. You don't have to go $300 bucks for that though, there are cheaper scalers.

http://www.ebay.com/itm/Premium-Composite-RCA-Component-YPbPr-VGA-HDMI-To-HDMI-Switcher-Scaler-/251903127544

That seems like one, but the quality, the lag and all that is gonna vary from what I hear. At $300, you're thinking of the best known ones like the Framemeister.

But yeah, I think it would be cool if someone like Steve did the simplest possible resolution doubler to go from 240p to 480p.

[db-electronics]

But yeah, I think it would be cool if someone like Steve did the simplest possible resolution doubler to go from 240p to 480p.

Someone already made a line doubler and used it on a Neo Geo. It would be the same concept for any 15KHz video signal really. It's not a project for the faint of heart...

http://mikejmoffitt.com/wp/?p=270