DownLow2Slow145 Posted May 12, 2023 Share Posted May 12, 2023 (edited) I am having a issue with tapper for the 2600 using the stella emulator where the screen is jittering up and down rapidly. I have tried re downloading the rom and went through the settings and messed with it. I was wondering if any one else is having this issue or is it just me? If you know a possible fix please help thanks. Edited May 12, 2023 by DownLow2Slow145 Quote Link to comment Share on other sites More sharing options...
+Stephen Posted May 12, 2023 Share Posted May 12, 2023 Sounds like what would happen if the game was coded incorrectly and the scanlines per frame is not steady. That being said, I just ran Stella 6.3 and it loads Tapper without any jumping. Quote Link to comment Share on other sites More sharing options...
DownLow2Slow145 Posted May 12, 2023 Author Share Posted May 12, 2023 6 hours ago, Stephen said: Sounds like what would happen if the game was coded incorrectly and the scanlines per frame is not steady. That being said, I just ran Stella 6.3 and it loads Tapper without any jumping. I am using Stella 6.7 but i dont think thats why its doing this. I think you are right about it being something to do with scanlines their is another topic i believe where someone was having a similar issue with Tapper though i think it was a physical cart and issue with the display. I am not a very knowledgeable person to the more technical aspects of this. Quote Link to comment Share on other sites More sharing options...
DownLow2Slow145 Posted May 13, 2023 Author Share Posted May 13, 2023 I have also found it does this with congo bongo (NTSC) and not the PAL version I tried Up n Down (NTSC) and Star Trek (NTSC) two other 8k SEGA game and it works fine i will try another emulator just to see if anything different happens. Quote Link to comment Share on other sites More sharing options...
.mad. Posted May 13, 2023 Share Posted May 13, 2023 (edited) just tried stella 6.7 and it has jittering graphics in Tapper here. other games seem ok. my guess is, settings got broken during an update. older versions 242-653 work perfectly with Tapper. 👍 Edited May 13, 2023 by .mad. Quote Link to comment Share on other sites More sharing options...
DownLow2Slow145 Posted May 16, 2023 Author Share Posted May 16, 2023 On 5/13/2023 at 4:53 AM, .mad. said: just tried stella 6.7 and it has jittering graphics in Tapper here. other games seem ok. my guess is, settings got broken during an update. older versions 242-653 work perfectly with Tapper. 👍 Ok cool i was not sure if somehow it was just mine. Ill just use a older version for now thanks! Quote Link to comment Share on other sites More sharing options...
polyex Posted June 6, 2023 Share Posted June 6, 2023 I opened an issue on github. Quote Link to comment Share on other sites More sharing options...
polyex Posted June 8, 2023 Share Posted June 8, 2023 (edited) From the developers: That's Stella's jitter emulation. The game will not run stable on all CRTs. You can reduced the sensitivity or disable it in Developer settings/Video/Jitter & Roll. They marked the bug as closed. Edited June 8, 2023 by polyex Quote Link to comment Share on other sites More sharing options...
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