Sophia 2 - improved GTIA replacement

[wildstar87]

13 hours ago, scorpio_ny said:

From the documentation, it seems that it doesn't support 15Khz RGB, only standard VGA.

Strange, I thought that was why there was a specific RGB mode with interlace, since there is a specific VGA mode.  @Simius can you chime in here?

[Beeblebrox]

22 minutes ago, wildstar87 said:

Strange, I thought that was why there was a specific RGB mode with interlace, since there is a specific VGA mode.  @Simius can you chime in here?

Simius posted an update Sophia 2 manual a few weeks back: 

 

The original feature spec is here:

Features:

- 100% compatible GTIA replacement

- PAL/NTSC encoding

- Independent RGB/YPbPr/VGA and DVI outputs

- eight selectable DVI modes

- 15 loadable 18-bit color palettes

 

[wildstar87]

19 minutes ago, Beeblebrox said:

Simius posted an update Sophia 2 manual a few weeks back: 

 

The original feature spec is here:

Features:

- 100% compatible GTIA replacement

- PAL/NTSC encoding

- Independent RGB/YPbPr/VGA and DVI outputs

- eight selectable DVI modes

- 15 loadable 18-bit color palettes

 

Unless I'm missing something, I thought RGB specifically referred to RGB 15Khz, otherwise I'm not sure what RGB standard we are talking about, because technically VGA is RGB, just at a specific frequency.  YPBPr is component RGB, which again is also RGB (sorta) just based on a different standard from my understanding.  https://thecablesland.com/ypbpr-vs-rgb/

 

If it doesn't support 15Khz RGB, to output to ST color monitors, or Commodore/Amiga monitors RGB, then that's a simple answer, but I just want to make sure that's the case.

Edited September 12, 2023 by wildstar87

[Simius]

Analog outputs of the Sophia 2 can be configured as 31kHz VGA mode, 15kHz RGB mode or 15kHz YPbPr mode. If you can get an image on your VGA monitor, the analog outputs are working. 

[Dinadan67]

RGB 15khz works fine, i use a cheap DVI->VGA adapter + Lotharek's VGA->SCART cable to connect a Commodore 1084 monitor: https://forums.atariage.com/topic/98341-whats-the-latest-atari-related-things-youve-bought-on-ebay/page/201/#comment-4897729

Edited September 13, 2023 by Dinadan67

[wildstar87]

17 hours ago, Simius said:

Analog outputs of the Sophia 2 can be configured as 31kHz VGA mode, 15kHz RGB mode or 15kHz YPbPr mode. If you can get an image on your VGA monitor, the analog outputs are working. 

Thanks Simius, what would be the proper settings for 15Khz RGB in the Special features?  RGB, Sync mode norm or interlace? and I assume Sync out to Csync?

[wildstar87]

On 9/13/2023 at 12:27 AM, Dinadan67 said:

RGB 15khz works fine, i use a cheap DVI->VGA adapter + Lotharek's VGA->SCART cable to connect a Commodore 1084 monitor: https://forums.atariage.com/topic/98341-whats-the-latest-atari-related-things-youve-bought-on-ebay/page/201/#comment-4897729

Can you tell me what settings you used in the special features?

[Dinadan67]

I just connected my Commodore 1084 monitor to check the settings:

 

[wildstar87]

Thanks much!

[TheUnseenSquid]

I'm also eagerly awaiting the next batch of boards! Got a lonely 5200 here I want to wire up into my setup. I'll bookmark the thread and check back every few weeks.

[Beeblebrox]

3 hours ago, TheUnseenSquid said:

I'm also eagerly awaiting the next batch of boards! Got a lonely 5200 here I want to wire up into my setup. I'll bookmark the thread and check back every few weeks.

Register your interest here:

 

 

[TheUnseenSquid]

On 10/8/2023 at 10:32 PM, Beeblebrox said:

Register your interest here:

 

 

Done, thanks!

[madgitty]

Not been here for some time but , is this still available and if so how can I get one

thanks

[Dantaipan]

I have been trying to get my Sophia 2 analog RGB to work on my Amiga 1080 monitor. I think the sync voltage is a little low for it. I am using one of those Console5 power supplies and wonder if it is not providing enough amperage for U1MB and Sophia. I am able to run the RGB into RT5X or into the 1080 via the RGB-2YC which still looks pretty solid. 

[Beeblebrox]

19 hours ago, Dantaipan said:

I have been trying to get my Sophia 2 analog RGB to work on my Amiga 1080 monitor. I think the sync voltage is a little low for it. I am using one of those Console5 power supplies and wonder if it is not providing enough amperage for U1MB and Sophia. I am able to run the RGB into RT5X or into the 1080 via the RGB-2YC which still looks pretty solid. 

5v 2amps would be fine, so as long as you're console5 psu gives a clean power supply.