This is likely caused by a miss-match between the frame rate of the game (PAL PS1 doesn’t run bang on 50hz) and what your TV natively supports. By turning frame lock off you’re outputting a slightly different frame rate, usually this results in a stutter rather than a tear though. By turning game mode off you prevent the TV double or triple buffering the image.
Does the MU8000 support VRR or similar? You could try turning VRR flag on, on the OSSC Pro, this has been known to solve the issue on some TVs.
It just says no sync. but surely they is or I wouldn’t get a picture when using a cheap SMD2 2 HDMI adaptor?
Not if the cheap SMD2 to HDMI adapter is wired to use composite video for sync rather than csync like your SCART cable.
Perhaps whoever wired it up didn’t connect csync and only composite video for sync? What does the LCD on the OSSC say, no sync?
If the product listing says it’s a SCART cable then it is a SCART cable, JP21 cables look the same as SCART cables but are wired differently. The region of the console is irrelevant to this, it’s entirely possible to create a SCART cable for a Japanese console or a JP21 cable for a PAL console, it simply comes down to how the cable is wired up.
OSSC can’t affect what cartridges work this has to be a problem with your SFC or perhaps the Everdrive itself. What happens when you try to use it with OSSC? What does the LCD display?
So if I’m reading this correctly you bought your JP21 cable from Ali Express? Where did you get the JP21 adapter from? VGP?
Sounds like its just a SCART cable not a JP21 cable.
Definitely not a known issue, not one I’ve run into at all. We may have to RMA this unit and swap it for another one for you.
Not a problem! I’ll get things sorted for you now.
Thanks,
Matt
Hi,
I did contact you on your live.com e-mail address yesterday, did you not get it?
We’ll have stock of Extra AV out within the next few days.
since 85 isn’t a multiple of 50 or 60 I don’t think this would be all that much use as you’d get a stuttering image.
Can’t understand why it’s not working with your Pro when it did for Rees, very strange.
Should composite video be peaking that high? I guess Atari weren’t as careful as they should have been.
Rees did some beta testing on the OSSC Pro and his STe works with it – https://www.youtube.com/watch?v=4RJsdvM4fI4&t=877s
If you are willing can you remove the resistor from the composite video and see if that works?
and is your system a ST with a RF modulator (composite video for sync) or without (composite sync) ?
Ah yes seems you’re right, pin 2 can be sync or composite video.. how lovely. Do you recall Markus if your machine had RF or not? I’m just trying to narrow down the problem here.
@retro-computer-shack any joy with adjusting Analog sync Vth?
ST actually only outputs hsync and vsync (or at least most models do), if you see TheCorfiot post above it seems some cables use a hacky way to get sync from hsync while others use composite video.
You’d have thought composite video was the better way to do it, but perhaps not. I was told composite video out has long a delay time on the sync causing the image to be shifted, but this could easily be corrected on either OSSC by adjusting backporch. I agree using a resistor on composite video seems strange but I’m no expert.
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