steddyman

Glad you like it. Thanks for buying.

Thanks man. Really appreciate that.

Hi Guys I hope you don't mind me posting this here. As you know I have an Atari 800XL which has a Simius RGB mod and an Electrotrains Ultimate cart. However some of my fondest memories were from the ST, so I created an Atari ST case for the Raspberry Pi. I've recently got a new filament colour that I think is pretty close to the original case. https://retropicases.com/collections/raspberry-pi-cases/products/atari-st-retro-raspberry-pi-case I make these to order and usually ship in 7-10 days. I hope you like them. You can run an Atari emulator using Retropie and the Hatari emulator as per this link: https://github.com/retropie/retropie-setup/wiki/Atari-ST-STE-TT-Falcon Steddy

What are the changes in 1.3 please Simius? Also, why do the different revisions require different hardware rather than just different cables and bitstreams?

Hi Simius I've received the GBS-8220 board now and notice it does actually have an RGBS input which should be easily wired to Sophia. Can you tell me what the voltage levels are of the RGB and CSYNC signals from the Sophia please? I presume they are TTL level (0-5V) or given you are using a modern CPLD device is the high level more like 3.3V? The reason I ask is the GBS-8220 uses a 3.3V supply voltage so if you are outputting more than this I will need to use an appropriate resistor.

That would be perfect thanks if that's possible. Or if you want to share th source I promise to keep it safe and I should have enough Verilog and VHDL knowledge to make the changes myself. Happy either way.

Hi Simius I know I could buy one of these to connect the Sophia to VGA (15khz) but is one actually needed or is there another way? http://arcadeforge.net/Scaler-and-Strike-Devices/Sync-Strike::15.html My IIyama isn't handling the modes cleanly, so I have bought one of these devices which is designed to scale 15khz to VGA signal levels and youtube reviews of it are mostly excellent: http://www.ebay.co.uk/itm/111462912684?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT I notice from looking at the earlier posts that there was a version of the code that also output separate HSYNC and VSYNC signals. I'm not sure if voltage levels are compatible with VGA though. Is that still an option? Have you considered releasing your source to stop annoying pests like me asking these questions?

Oh Wow Works even better in NTSC resolutions. So how easy would it be to make a cable for the Atari for this using Sophia?

The monitor is well known to handle 15khz. In fact I have an Iiyama here that says 31khz+ that I have a 15khz signal on for my Amiga. Specs Lie

Yes, because I am going to buy it just for the purpose Either an older Dell 2001FP or a Benq.

Wow So that is different hardware to the version I have? Or can I update the CPLD code on the one I have to support it? Also, can't the current just drive VGA? Signals look very similar to VGA and you can buy cheap SCART to VGA cables for a few pounds on eBay.

I have my Atari 800XL connected via SCART to my old TV, along with the Amiga 1200 I recently purchased. I would very much like to connect them to my VGA monitor which supports 15khz video signals. Is it possible to make a cable for the Sophia board that gives me VGA at 15khz? It sounds like it should be easily possible.

Any updates on this MacRorie?

I haven't had a notification yet and I am an international buyer (UK)? Will I get a shipping notification from USPS or are you using a different courier service for international orders? Thanks for the hard work getting them all together.

Ok thanks. Must just be the monitor doesn't support 15khz which is a surprise given the age. The Amiga issue confirms it anyway.

Just going back to my Component cable above. Is it correct that I did not connect the yellow S-video connection to the onboard Composite Sync? I thought sync was on green so didn't connect it. But I've just connected an Amiga via VGA to the same monitor and it reports it cannot display the screen mode. It was just blank with no error on the Component cable.

Thanks for confirming

Simius. Can you comment on what code I have loaded on my Rev.A? A few games look really pink to me, especially Donkey Kong. My son even commented on it. If it isn't the latest can you please provide it to me. I do have a USB Blaster lying around somewhere I can flash it with. Thanks

Ah right. I started again with another cable because the old one was a mess and noticed my issue. I had accidentally connected the CVBS signal to the wrong pin. Working perfectly now. Simius, did you say my Rev A board had the latest CPLD code with the auto palette selection?

Not quite sure what you mean there Simius. I understand disconnect pin20 on the SCART end, but pin1 on the D-SUB socket is the audio connection isn't it?

Yes they are, though I have tried it with the Interlaced jumper also closed and it does the same.

Right, i've made up an RGB SCART cable with better results, but still not working right (though it is not a cable I am proud of). I now have it connected to my old Trinitron TV. When I switch the input on the TV to the SCART, the picture appears for about 1 second then disappears. While it is visible it looks great (though I am not sure it is RGB since the TV is supposed to display a different symbol for RGB SCART). Every time I switch back to the input it appears again stable then vanishes after 1 second each time. Does anybody know what could be causing this? Also, does anyone know where I could get a better quality cable in the UK (mine in Rev.A so not the same as Rev.B boards).

Thanks. Would definitely prefer to connect it to the 24" Dell Monitor if possible though.

Ok thanks What is the frequency it uses over Component? Is it 240p, 480p or 480i (or something else)? I wanted to use it with my monitor but I do have a 14" Trinitron TV with SCART I can use and fortunately a spare d-sub connector I could wire up to it.

Hi Simius I have made a Component cable and have both jumpers installed on my Rev.A board but I cannot get a picture on my monitor. The only thing that works for me is sound. My cable is as follows: Pin 1 - Red and White audio connections signal terminal (connected to pin 2 of RF modulator internally) Pin 2 - Component Pb signal (blue) Pin 3 - Component Y signal (green) Pin 4 - Component Pr signal (red) Pin 6 - Signal ground for all signals I have tried both jumpers on or off but assume they should normally both be installed for it to work. I have tested from the numbers pins on the 9 pin connector through to the component signals using a continuity test and they are all connected as they should be. GTIA is installed on Sophia board (with index notch to the left) and it is installed in the GTIA socket of 800XLF (UK PAL model with integrated FREDDIE chip). Sound and video output is working over composite using the standard inbuilt connector. Have you any ideas why this may not be working for me?