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Topic: Fun with the Genesis' hi-res mode and Sonic 2 (Read 862 times)
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Dryer Lint
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« on: February 13, 2007, 05:27:18 pm » |
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While trying XE, I recently discovered that the Genesis actually had a high-resolution mode with twice the normal vertical resolution. This was used in the Sonic 2 VS mode (not in Sonic 3, though) and explains why everything looks so squashed, since the hi-res 4:6 image gets squeezed on a 4:3 screen. But with XE, you can see the image at its full resolution in pixel-aspect ratio:   It's fun to play versus mode like this! Especially since I have an LCD that can be rotated 90°, so the VS play image fills the whole screen. Now I was wondering if anyone has thought of utilizing the hi-res mode in a hack. One idea would be to enable the hi-res mode in the main game of Sonic 2, so essentially you would see a lot more above you (like in Sonic Rush on the DS). This would probably take lots of hacking work to implement, but the idea of increasing the resolution on a game is intriguing, isn't it? |
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Metal Knuckles
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« Reply #1 on: February 13, 2007, 06:50:43 pm » |
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... That isn't you, lpfighter, is it?
The Genesis, or Megadrive if you wanna be European about it, doesn't have a high-resolution mode. It has a 16-bit resolution. What you are seeing is merely the filter offered by the emulator, probibly eagle-eye or whatever, which is an extra feature of only the emulator that smooths the images out. A game created for a 16-bit system, if playable on a 32-bit system, would still only show up as 16-bit. Playstation games being played on Playstation 2 is a good example of this.
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Numonohi_Boi
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« Reply #2 on: February 13, 2007, 07:18:37 pm » |
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by smoothes, you mean stretches right? because that is what it is doing, stretching out the image to proper ratio
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creaothceann
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« Reply #3 on: February 13, 2007, 07:58:37 pm » |
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The Genesis, or Megadrive if you wanna be European about it, doesn't have a high-resolution mode. It has a 16-bit resolution. What you are seeing is merely the filter offered by the emulator, probibly eagle-eye or whatever, which is an extra feature of only the emulator that smooths the images out. A game created for a 16-bit system, if playable on a 32-bit system, would still only show up as 16-bit. Playstation games being played on Playstation 2 is a good example of this.
WDF? 16-bit resolution? "Mega Drive" was the international name (except US). |
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Sliver X
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« Reply #4 on: February 13, 2007, 09:06:17 pm » |
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... That isn't you, lpfighter, is it?
The Genesis, or Megadrive if you wanna be European about it, doesn't have a high-resolution mode. It has a 16-bit resolution. What you are seeing is merely the filter offered by the emulator, probibly eagle-eye or whatever, which is an extra feature of only the emulator that smooths the images out. A game created for a 16-bit system, if playable on a 32-bit system, would still only show up as 16-bit. Playstation games being played on Playstation 2 is a good example of this.
There is so much that's wrong with this, I don't even know where to begin.  |
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Kitsune Sniper
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« Reply #5 on: February 13, 2007, 09:07:48 pm » |
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Be nice, kids.
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Numonohi_Boi
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« Reply #6 on: February 13, 2007, 09:09:56 pm » |
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yes, to be fair it is the Megadrive, and and some country in the west hemisphere calls it the Sega Genesis. That and it's not 16-bit resolution or 16-bit color but a 16-bit processor, that might have gotten you a little confused.
as for your playstation to PS2 comment, the reason PSOne games appear the same when run on a PS2 is because they are running on PSOne hardware built into a PS2, I wouldn't have minded them taking advantage of the PS2. for the sake of your argument lets take the Dreamcast, a fellow "128-bit system" just like the PS2, (not that the bit number really carries any relevence anymore) you could run your same ole' PSOne games on Dreamcast through Bleemcast and get a significant resolution upgrade. Hope that clears things up
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« Last Edit: February 13, 2007, 09:23:18 pm by Panzer88 »
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Sliver X
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« Reply #7 on: February 13, 2007, 09:13:17 pm » |
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The split screen 2 player mode actually is double vertical resolution (320x448); it's one of the two interlace modes the Genesis/Megadrive can pull off.
So this isn't some kind "filter" being applied; it really *would* look like that, if not for NTSC sucking so much.
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Numonohi_Boi
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« Reply #8 on: February 13, 2007, 09:21:47 pm » |
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The split screen 2 player mode actually is double vertical resolution (320x448); it's one of the two interlace modes the Genesis/Megadrive can pull off.
So this isn't some kind "filter" being applied; it really *would* look like that, if not for NTSC sucking so much.
yes, if only we didn't all have 4:6 television sets   |
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Cyberman
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« Reply #9 on: February 13, 2007, 10:54:27 pm » |
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Although mostly a side note I suppose, imagine how really strange it would look on an HD TV (if the 'Mega Drive' could put out a component video for that). So back to the original subject, you want to know if it's possible to use this mode in a hack on an existing game? Hmmm depends on how they managed there tile sets. Most tiled scenes are 'scrolled' as a virtual background (IE put new tiles along the edges and scroll them in). For existing games to support this you definately have to adjust the section that handled the background scroll. Good or bad idea I know not, but it is intriguing yes.  Cyb |
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Dryer Lint
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« Reply #10 on: February 14, 2007, 07:55:22 am » |
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The split screen 2 player mode actually is double vertical resolution (320x448); it's one of the two interlace modes the Genesis/Megadrive can pull off.
So this isn't some kind "filter" being applied; it really *would* look like that, if not for NTSC sucking so much.
Thanks for correcting Mr. Knuckles... I didn't even know what to say after his post. Sorry Knuckles! Anyway, it is pretty darn impressive that the Genesis could basically run Sonic 2 twice, or at least the rendering part. |
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DaMarsMan
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« Reply #11 on: February 14, 2007, 08:37:19 am » |
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Yeah I'm just wondering how that would look on a television. I can't really picture it.
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creaothceann
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« Reply #12 on: February 14, 2007, 09:28:52 am » |
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Anyway, it is pretty darn impressive that the Genesis could basically run Sonic 2 twice, or at least the rendering part.
Well, you just have to change some video registers. The consoles already render the scenes twice by default, from what I gathered. |
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