Do some emulators intentionally implement overscan?

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ericandrewlewis
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Do some emulators intentionally implement overscan?

Post by ericandrewlewis » Sat Feb 02, 2019 7:49 am

If I open a ROM of mine in Nintaco, I can see the first and last 8 scanlines/row of nametable tiles are not displayed.

However, if I open up the same rom in Nestopia they're rendered.

Do some emulators like Nintaco intentionally implement overscan?
Last edited by ericandrewlewis on Sat Feb 02, 2019 7:58 am, edited 1 time in total.
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tokumaru
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Re: Do some emulators intentionally implement overscan?

Post by tokumaru » Sat Feb 02, 2019 7:54 am

Yes, several emulators hide scanlines at the top and bottom of the screen by default. Some games have glitches in those areas, so this is supposed to make them look better. This is usually configurable though, do you can choose to see the whole picture if you want to.
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koitsu
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Re: Do some emulators intentionally implement overscan?

Post by koitsu » Sat Feb 02, 2019 7:56 am

Nestopia -> Options -> Video -> now you know what some of the "NTSC Screen" and "PAL Screen" values are for.
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