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- Joined: 31 Oct 2018
- Posts: 27
- Location: Davenport, FL
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Sonic 2 Master System PAL only?
 Posted: Wed Oct 09, 2019 5:57 pm
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I've seen here on the site that Sonic 2 is listed under "PAL Only", yet I've seen videos of it running on NTSC systems and other people saying it works, while also hearing from some that it only works on PAL. Could anyone give me a definitive answer, since I'm planning on buying a copy and I live in the US. Thanks!
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- Joined: 23 Aug 2009
- Posts: 213
- Location: Seattle, WA
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Posted: Wed Oct 09, 2019 11:49 pm
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It was not released in the US, but it will run fine on a US (NTSC) Sega Master System. It is just the case that they didn't package it for or sell it to a US audience.
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- Site Admin
- Joined: 19 Oct 1999
- Posts: 14745
- Location: London
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Posted: Thu Oct 10, 2019 6:06 am
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To get that tag it must also have glitches on an NTSC system.
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- Joined: 31 Oct 2018
- Posts: 27
- Location: Davenport, FL
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Posted: Thu Oct 10, 2019 1:31 pm
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Maxim wrote To get that tag it must also have glitches on an NTSC system.
Yeah, this is what I was referring to. I have yet to see any examples of it glitching on NTSC systems, but I'm not 100% sure if it wouldn't.
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- Joined: 05 Sep 2013
- Posts: 3828
- Location: Stockholm, Sweden
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Posted: Fri Oct 11, 2019 9:18 am
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a quick test might be to get the ROM, fire that in Emulicious in NTSC (60Hz) mode and 'Emulate VDP constraint' on. Also on the debugger, you could set 'Break on invalid VDP access'.
If in the debugger you'll get a message like 'Accessing the VDP too fast' it means it's going to have glitches on NTSC.
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- Joined: 31 Oct 2018
- Posts: 27
- Location: Davenport, FL
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Posted: Fri Oct 11, 2019 6:07 pm
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sverx wrote a quick test might be to get the ROM, fire that in Emulicious in NTSC (60Hz) mode and 'Emulate VDP constraint' on. Also on the debugger, you could set 'Break on invalid VDP access'.
If in the debugger you'll get a message like 'Accessing the VDP too fast' it means it's going to have glitches on NTSC.
Oh okay! This is perfect thanks :) I can fire one up and post the results on here.
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- Site Admin
- Joined: 19 Oct 1999
- Posts: 14745
- Location: London
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Posted: Wed Mar 20, 2024 7:06 am
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Belatedly, here’s a description of the issue:
armixer24 wrote Ok I see why it's flagged that way. The game is playable but you can see that it occasionally struggles to keep the pace in 60hz, compared to 50hz. When it does lag, the top of the screen often contains CRAM dots and sometimes the rendering is not even turned on until after the sprites who keep track of the rings should be displayed. When this happens, my inputs get eaten as well so... yep. Valid tag.
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