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Sophia 2 - improved GTIA replacement


Simius

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I want to RGB scart the cable as well, although I can do the soldering I'm not mr electronics, I looked at the tech info and think I might be close, could anyone confirm if it looks right or I'm going to blow my monitor / atari up?

 

I'm guessing here

DVI    Scart
C3     7 Blue
C2    11 Green
C1    15 Red
C5     5, 9, 13 linked? Grounds for above
C4    20 Sync
? 21 for shield, not sure in needed

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DVI    Scart
C3    7 Blue
C2    11 Green
C1    15 Red
C5     5, 9, 13 linked, Grounds for above
C4    20 Sync
8      16 Blanking

        21 -  Cable shield (do not connect to ground)

Edited by Simius
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1 hour ago, chevymad said:

VGA must still need a scan doubler? My VGA monitor won't recognize it. 

According to the PDF attached to the first post VGA mode should work, 480P @ 60Hz. for NTSC or 576P @ 50Hz. for PAL.

Have you configured the Sophia2 to VGA mode? The config software is attached to post #150.

 

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@Simius Thank you for doing this new revision. I'm looking forward to this.

 

I have a question. And my knowledge about video adapters/standards (DVI, HDMI) is extremely limited, to say the least.

 

Some monitors have started to drop DVI. I think there is no loss of quality going from DVI to HDMI (the same for display port?)... but I wonder why is the selection for DVI for Sophia 2? I figured it may be that you have already being working on this and it is best to continue this route?

 

Any comments about it, so I can learn more, would be greatly appreciated.

 

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1 hour ago, Blues76 said:
1 hour ago, mytek said:

The Sophia2 is the only version that would fit into a 576NUC+.

Great to hear.

Please keep in mind, that the current case designs do not have any provisions for the DVI connector.  This is certainly not a reason to not install one (sorry - double negative), just something to consider.

 

That being said, I would not be sad to have a Sophia2 in every machine I own!

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10 hours ago, Blues76 said:

@Simius Thank you for doing this new revision. I'm looking forward to this.

 

I have a question. And my knowledge about video adapters/standards (DVI, HDMI) is extremely limited, to say the least.

 

Some monitors have started to drop DVI. I think there is no loss of quality going from DVI to HDMI (the same for display port?)... but I wonder why is the selection for DVI for Sophia 2? I figured it may be that you have already being working on this and it is best to continue this route?

 

Any comments about it, so I can learn more, would be greatly appreciated.

 

The DVI standard is most suitable because includes both analog and digital signals. Connecting DVI to HDMI is simple and only requires a cable. Dropping the DVI standard by manufacturers isn’t a problem as well as dropping Atari computers. 

Edited by Simius
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12 hours ago, Simius said:

The DVI standard is most suitable because includes both analog and digital signals. Connecting DVI to HDMI is simple and only requires a cable. Dropping the DVI standard by manufacturers isn’t a problem as well as dropping Atari computers. 

Thank you. I have learned something new. I didn’t know that DVI had both signals. 

 

Does DVI to Display Port also suffers no conversation problems with a cable, right ? 

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23 hours ago, Blues76 said:

@Simius Thank you for doing this new revision. I'm looking forward to this.

 

I have a question. And my knowledge about video adapters/standards (DVI, HDMI) is extremely limited, to say the least.

 

Some monitors have started to drop DVI. I think there is no loss of quality going from DVI to HDMI (the same for display port?)... but I wonder why is the selection for DVI for Sophia 2? I figured it may be that you have already being working on this and it is best to continue this route?

 

Any comments about it, so I can learn more, would be greatly appreciated.

 

I had an old projection TV for a while about 15 years ago (until it went belly-up) that the most modern input on it was DVI. At that time I had a direct TV reciever/DVR with HDMI output. I knew nothing of DVI at the time. Anyway I did my research and found out that DVI and HDMI used compatible video signals, so I bought a DVI-to-HDMI adapter plug that I plugged into the TV's DVI port, which worked great, with a perfect picture. I still have the plug and it's what I will use to plug my Sophia 2 out into the HDMI of my current monitors. (once the 800 version is available for me to purchase)

20201227_124518.jpg

20201227_124503.jpg

Edited by Gunstar
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On 12/24/2020 at 12:54 PM, aleomark said:

Hi guys, Im waiting the Sophia 2 to install in my atari 5200, I want to use it in a sony pvm and Also a framemeister, what cable could I Get /buy and were?

 

thanks

hi, for scart input into pvm, could these work?

1. https://www.amazon.com/gp/product/B007NLJJYM?pf_rd_r=BZ00HJ7E925NDTWYWT6J&pf_rd_p=5ae2c7f8-e0c6-4f35-9071-dc3240e894a8

plus

2. https://retro-access.com/products/db9-to-scart-for-atari-5200-sophia-board?_pos=1&_sid=a84a88efa&_ss=r

 

Thanks

Edited by aleomark
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