briwayjones Posted January 26, 2017 Share Posted January 26, 2017 I never really played Asteroids as a kid. I recently got three copies of Asteroids. On all of them while playing the screen jumps up and down some, which is distracting. No other game does this that I've seen. Is that normal for Asteroids? I guess since all three copies do it than the answer is that it is? I'm just a bit surprised they released the game like that. Quote Link to comment Share on other sites More sharing options...
Thomas Jentzsch Posted January 26, 2017 Share Posted January 26, 2017 How much does it jump? Quote Link to comment Share on other sites More sharing options...
Keatah Posted January 26, 2017 Share Posted January 26, 2017 I don't think it is normal. It doesn't jump in emulation. And I don't recall it happening when I had real hardware.. So.. Quote Link to comment Share on other sites More sharing options...
+SpiceWare Posted January 27, 2017 Share Posted January 27, 2017 By chance are you using a modern TV? They don't always play well with the older consoles. Quote Link to comment Share on other sites More sharing options...
CannibalCat Posted January 27, 2017 Share Posted January 27, 2017 Yeah, must be your TV, I've never seen that happen on real H/W, I use CRTs though, not flat screen LED, LCD or Plasma. Quote Link to comment Share on other sites More sharing options...
briwayjones Posted January 27, 2017 Author Share Posted January 27, 2017 By chance are you using a modern TV? They don't always play well with the older consoles. I'm playing on a regular definition 4:3 CRT. Quote Link to comment Share on other sites More sharing options...
briwayjones Posted January 27, 2017 Author Share Posted January 27, 2017 It jumps up and down by maybe 1/8" on this setup. Quote Link to comment Share on other sites More sharing options...
+xucaen Posted January 27, 2017 Share Posted January 27, 2017 I notice Asteroids jumps for about half a second when I first turn it on. Other than that it should be a steady image. Quote Link to comment Share on other sites More sharing options...
briwayjones Posted January 27, 2017 Author Share Posted January 27, 2017 What size screens does everyone play on? My TV is a 32". I wonder if it's not really noticeable on smaller screens and is noticeable because it's a larger TV? Quote Link to comment Share on other sites More sharing options...
Thomas Jentzsch Posted January 27, 2017 Share Posted January 27, 2017 (edited) I used to have a 28" CRT, but I never noticed such jumps. But Asteroid doesn't create a perfect vertical sync signal of at least three scan lines. Instead the first scanline is a bit shorter. Some TVs are very sensitive here. Do you have a Harmony cart or something similar? Attached is a NTSC ROM that should fix your problem. Here is a thread that talks about the problem in more detail. Asteroids (VSYNC fixed).bin Edited January 27, 2017 by Thomas Jentzsch 1 Quote Link to comment Share on other sites More sharing options...
+SpiceWare Posted January 27, 2017 Share Posted January 27, 2017 Here is a thread that talks about the problem in more detail. I forgot about that! Quote Link to comment Share on other sites More sharing options...
Thomas Jentzsch Posted January 27, 2017 Share Posted January 27, 2017 I forgot about that! Happens to me all the time... Quote Link to comment Share on other sites More sharing options...
briwayjones Posted January 27, 2017 Author Share Posted January 27, 2017 Do you have a Harmony cart or something similar? Attached is a NTSC ROM that should fix your problem. No Harmony cart. But I got the answer, it's just the way it is. At least on this TV. Thanks guys! Quote Link to comment Share on other sites More sharing options...
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