[LordWinston]

Ok – good news swapping out my VIC-II chip to 6569R3 appears to have resolved the issue, no shimmer or wobble, although the image quality is not as good as when connected directly via the RetroTink2X however I think this will be down to dialling in correct settings on OSSC and tweaking the LumaFix64 pots.

If you’re having a similar issue check to see if your VIC-II is the 8565R2 model and consider swapping it out if you can.

[LordWinston]

While researching this issue further, I stumbled across a post on Lemon64 which is suggesting the shimmering/wiggling issue is related to a certain MOS VIC-II chip variant 8565R2

I tested a RetroTINK 2X today. It loses horizontal sync on the 8565R2 after 40 seconds. I tested two chips from different factories and two monitors. Always goes wiggly after 40 seconds.

It worked on a 6567R8, 6569R3, and a newer 8565 (forgot which one and not going to open case). The 6560 works too. So it’s just one chip version that’s a problem, which happens to be a very popular chip.

Link to thread: https://www.lemon64.com/forum/viewtopic.php?t=69472

I opened up my C64 Reloaded Mk2 and it does indeed have the 8565R2 installed (with LumaFix64), I just checked my spares and I fortunately have a 6569R3 so I’m going to swap this out and I will report back (might be next week somepoint with Xmas and my shift pattern).

[LordWinston]

Hmmm ok starting to get a bit confused now, did some further testing with display directly connected to RetroTink2X and the shimmering appears but after a much greater length of time.

[LordWinston]

I’ve been experiencing exactly the same issues as @demloition did with the C64 Reloaded Mk2 with RetroTinkX2 + OSSC. The image is stable for around 30 seconds and then shimmers, I’ve tried changing the h.samplerate as suggested in the other thread but this does not make a difference.

I’ve connected up my LCD to ther Retrotink2X directly and I have a far more stable image but without the abilities of the OSSC which is somewhat highly desired. Also a really weird bug where if connected directly to RetroTink2X the sound only plays while I’m holding one of the RetroTink2X’s buttons down, however if connected to OSSC the sound plays perfectly.

Very annoying but if anyone has any further pointers I’d be glad to hear about them.

PS – Just noticed before posting this reply that according to the OSSC wiki this is known issue, see here -> http://junkerhq.net/xrgb/index.php?title=RetroTINK2X#RetroTINK_2X_and_OSSC

[LordWinston]

That’s superb @paulb_nl I’ll give those settings a go annd report back

@NoAffinity Thanks for confirming that

[LordWinston]

Thanks a million for those tips.

Regarding the aspect ratio I’ve got 2 options ‘Full’ or ‘Aspect’, full just seems to strech the image for 16:9, where aspect seems far more natural. I’ve noticed that the linemult works in more modes with the Benq set to ‘Aspect’, although I’m now not sure which one is best, I’ll have a play around and see which one works (linemult 2-4 seem to not fill the screen where x5 will require scaling down).

I’m now confident the flickering is due to WHDLoad and my Amiga 1200 only have 2Mb of RAM, so def not OSSC 🙂

[LordWinston]

I’m using the following displays;

Benq GW2470HL
Samsung UE55MU7000

However I think I might be able to eliminate the OSSC as the cause, I have a CF Card acting as HDD in the 1200 and each time the screen blanks out is when the acitivity LED lights up on the CF Card (Alien Breed when loading the mission text is an example and the Team17 logo), so I’ll look at that issue seperately

Quick question though, with the Benq am I right in thinking using linemuult x5 would be best and then just play with the OSSC settings to get the image to fit the screen correctly?

[LordWinston]

Thanks for the quick reply.

Just testing it now again with Alien Breed. The OSSC display never changes from:

AV1: RGBS 313p
15.62Khz 49.92Hz

Is that correct? If it was changing screen modes would I see a change on the OSSC screen?

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