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marqs85 / ossc

Open Source Scan Converter
http://junkerhq.net/xrgb/index.php/OSSC
GNU General Public License v3.0
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sync problem with 1CHIP PAL SNES #82

Closed mistepien closed 2 years ago

mistepien commented 3 years ago

I have similar problem. OSSC + 1chip PAL SNES not modded + Top Gear == losing sync when starting race etc. When the screen is black for a moment I’ve got sync loss and music stops playing. The OSSC in this very moment has a red light. The cable is RGC C-SYNC (LM1881 based) for SNES PAL. I tried to increase VTH but is changes nothing. I see that I’m not the only one with such problem. I use line2x Generic 4:3. I have and old TV and only line2x and line5x modes work fine -- but I use line2x because with line5x screen is trimmed by the very definition (only 1920x1080 can work with my TV).

BUT I’ve Retrotink 2x-Scart, too. And Retrotink, in my configuration with Top Gear, works FLAWLESSLY and PERFECT. Thus the problem is not SNES, not a cable. The problem is OSSC. There is some serious bug in ossc firmware or in ossc hardware.

mistepien commented 2 years ago

I got LUMA SYNC cable and that it ok. Now I use 3x on 4k TV. SNES is modded with FFVIMAN mod and everything is just fine -- SNES has no dejitter