BuckoA51
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April 16, 2026 at 11:10 AM in reply to: OSSC Pro Expansion out to Hydra Scart – No stable image #69191
Expansion opt->Extra AV out mode
April 15, 2026 at 8:41 AM in reply to: OSSC Pro Expansion out to Hydra Scart – No stable image #69179Try toggling the composite sync output on the OSSC Pro. Is the RetroTINK cable including some kind of sync combiner?
This is definitely something we’d stock if it happens, fingers crossed!
Can you check which version of the OSSC Pro you have (sticker on the underside).
What signal are you processing through the OSSC Pro, or is it happening just with the test pattern?
Did you do the hardware modification required for the 1.x branch firmware? You must do this modification if you have an older OSSC (hardware revision 1.7 or earlier). Follow the specific firmware upgrade/downgrade instructions for 1.20 to downgrade (firmware file goes in fw sub-folder on fat32 formatted card).
Thats input timings. Scaler Opt->Scaler opt->DFP/CRT output mode lists available modes.
Really none of the available output modes work?
If you’re trying to downscale you probably want nearest neighbour modes, this mode is more for upscaling using optimal profiles.
No, it entirely depends on what the game designers chose. What you’re trying to do is find a resolution your PC can display that best fits the base resolution of the game, and then throw away the bits you don’t want when you downscale. so for a 320×240 base resolution game in a 640×480 output mode, you’d simply throw out every other line.
Some base resolutions are listed here https://junkerhq.net/xrgb/index.php/Scaling_pixel_art_tiles_on_modern_consoles/computers_with_Morph_4K and https://forum.arcadecontrols.com/index.php/topic,161951.0.html
Right so you can see 568×320 doesn’t fit into 320×240 equally so you are probably going to run into issues. 640×480 is probably the lowest resolution you’re going to get from a modern GPU so let’s stick with that. Additionally, this game is known to have bad scaling of its own. Have you tried the scaling fix available here. https://github.com/Aidiakapi/CrossCode-ScalingFix ? I did get this game looking half decent with Shaderglass though I’ve not tried through Morph or OSSC Pro.
Which game is it? Do you know what the base resolution of that game is?
That would be very unusual to have a CRT monitor that could only do 800×600, most computer BIOS etc screens were not in that resolution. Anyway, you can use scaler mode to fix the output resolution to whatever you want.
So you’re taking the output of OSSC and using a DAC to get it back into your TV?
March 9, 2026 at 9:45 AM in reply to: Legacy AV – RF expansion board: need an hand to make it work #68876https://junkerhq.net/xrgb/index.php/OSSC_Pro#Legacy_AV_opt.
Documentation is incomplete on the Wiki but you can see it is under Expansion opt->Legacy AV opt.->RF chscan (2min)
He says to get the 5v from pin 8 which is status and aspect ratio up coming in from the device/console side.
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