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The crevice between right and left of Original NES #26480 02/08/07 12:55 AM
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Pongbashi Offline OP
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A crevice is in right and left at the screen of Original NES System (& Famiclones System).

However, even if it carries out various screen setup of Nestopia, the crevice between the right and left cannot be displayed.



I want the screen of Original NES System, and the screen of Nestopia to become the same.

(However, why or Famiclones System has a black crevice between on either side. PPU is different? )

Last edited by Pongbashi; 02/08/07 12:56 AM.
Re: The crevice between right and left of Original NES [Re: Pongbashi] #26528 02/08/07 11:21 PM
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hap Offline
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Quote:
(However, why or Famiclones System has a black crevice between on either side. PPU is different? )
Famiclones are a Famicom imitation, you shouldn't expect it to be accurate.

Re: The crevice between right and left of Original NES [Re: hap] #26534 02/09/07 12:02 AM
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blargg Offline
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Those bands are usually only visible with a video capture or studio monitor that supports overscan. I'd have figured Nestopia would support them, just to be complete. The Famiclone's designers obviously didn't consider them important enough to display properly.

Re: The crevice between right and left of Original NES [Re: blargg] #26551 02/09/07 06:58 PM
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Pongbashi Offline OP
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Thanks.

Re: The crevice between right and left of Original NES [Re: Pongbashi] #26566 02/10/07 03:33 AM
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The borders are black on the PAL NES, too.

There are 15 border pixels left, 11 right, none above, two below, making for a total "underscanned" resolution of 282x242. TV cards usually capture 480 lines instead of 484/486 (486 for interlaced pictures only), so they crop (486-480)/486 = 1.2% of the picture on all sides.

Emulating the border is interesting for games that change the border color mid-frame, like Micro Machines.

Quote:
Those bands are usually only visible with a video capture or studio monitor that supports overscan.
Actually, my very non-studio TV shows about 6 pixels or so of the left border at least, and I assume many other TVs do as well. Just one more reason to emulate it, too.

Re: The crevice between right and left of Original NES [Re: NewRisingSun] #26576 02/10/07 05:41 AM
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hap Offline
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I don't think any games actually (ab)use it for effects, here's Micro Machines:
http://home.planet.nl/~haps/crap/mmborders1.jpg
http://home.planet.nl/~haps/crap/mmborders2.jpg

Another example in this old thread on nesdev (Batman emulator videocapture): http://nesdev.parodius.com/bbs/viewtopic.php?t=1704


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