what is rainbow banding ?

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Originally Posted by Ace

So then, why hasn't anyone found a way to output S-Video off the 32X? If that's the case, then there should have been an S-Video mod out by now.

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Supposedly in order to get S-video on a 32X would be to replace it's video transcoder with one from a genesis 3, although no one has done this yet as they don't want to render a M3 genny useless

32X uses a custom RGB over/underlay + video encoder chip, no way you can toss it out.... the hardware manual given to developers suggest there's S-video, but I've yet to look into it.... good news is that I've been messing with my 32X lately...

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Originally Posted by kool kitty89

You can see it in some youtube videos, I can't remember any specifically (but I know soem of mn12birds and CGR HD have it, I think MN12bird's Comix zone review shows it -especially at the boot/title sequence). There was a shinobi 3 video which showed it really well too.

Anyway, it's basicly thick vertical bands of iridecent colors, each around a 1/12 the width of the screen I think, and most visible on black screens and waterfalls (and similar) in the BG, the tubes in chemical plant zone show it quite clearly.

Edit: here at ~0:36 I think http://www.youtube.com/watch?v=oCDoP-zwoVI


I think s-video modding may eliminate it, and it's absent form RGB alltogether. I think the composite vs s-video vs RGB comparison TmEE posted recently shows the ranbow banding in composite, but it's not very clear.


The CXA1145 and 1645 encoders (the latter only on late model 2s and all model 3s) do have their own vertical banding tendancy, but shouldn't be visible in composite, and more like pin stripes (as on the NES -on a TV with really good comb filter- and famiclones), though I think those might be more broadly spaced than on the NES if that's what I can see on my TV. (which shows the NES's lines as well) They're very visible in s-video if a sufficient resistor (I think ~480 ohms) is not connected to the chrma line.

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If it only happens on certain effects used by certain games, then that to me spells "artifact of the specific game". It doesn't sound like it has ANYTHING to do with the Hardware.

You guys had me all freaked out about this for nothing! When I'm standing in front of the waterfalls in the first Act of Sonic the Hedgehog I see some 'rainbow artifacts'... but NO WHERE else in the game.. and I don't see those artifacts in any of the other 27 games I have.

Guys, it's called an Engine Artifact.


Just because a certain game on the PC has graphical issues doesn't mean there's something wrong with the hardware.

It's an issue with certain games, and so far I've only seen it on the bloody waterfalls of STH.

when playing sonic i don't stop and look at the waterfalls , i just fly through lol , hopefully i don't have to change any caps on mine or my sega cd for that matter

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Originally Posted by streetsofrage

when playing sonic i don't stop and look at the waterfalls , i just fly through lol , hopefully i don't have to change any caps on mine or my sega cd for that matter

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It's just an artifact of Sonic 1s' Waterfall and nothing more. Worry not about it.

Came for the Dio.

Disappointment.

I wasn't aware that the Model 2 Genesis (rev 1.8) also had issues with rainbow banding. That all changed when I played Sonic 1 yesterday and noticed the banding on the waterfalls. I'll either box it or purchase another 32X depending on how anal I am.

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Originally Posted by Knuckle Duster

Came for the Dio.

Disappointment.

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Like a Rainbow in the dark!

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Originally Posted by protivakid

Like a Rainbow in the dark!

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Why the hell you bumped this...
What's wrong with you?
You are here from year 2012, only have 4 posts and bump threads from last decade.
Just, wow. This is some sort of special ability.

Emphasis on special, with something wrong in the head
Straight outta' school, from the room marked special ed

I definitely get it on my "HD" Genesis through composite. It's not really visible on my preview video (below), but I'm going to go into banding specifically on full analysis of the new HD Retrovision cable run. Expect something in the next month or so.

EDIT: Don't hate. This was my first video lol

https://youtu.be/zohr6XOk1ZE

Okay, so here's a much better look at it:

https://www.youtube.com/watch?v=bH_rGyTY57g

Rainbow banding portion starts at 3:06.