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Horizontal Pseudo 512 Mode: Difference between revisions
From SnesLab
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'''Pseudo Hi-Res Mode''' is a transparency technique that displays the [[Main Screen]] and [[Sub Screen]] at the same time without digital [[color math]] blending any pixels. It is enabled by setting bit 3 of SETINI (2133h). Columns of dots with an odd horizontal position are drawn by sampling a subscreen pixel, and columns of dots with an even horizontal position are drawn by sampling a main screen pixel. <sup>[3]</sup> A [[CRT]] televsion blends the adjacent dots together, creating the transparency effect. | '''Pseudo Hi-Res Mode''' is a transparency technique that displays the [[Main Screen]] and [[Sub Screen]] at the same time without digital [[color math]] blending any pixels. It is enabled by setting bit 3 of SETINI (2133h). Columns of dots with an odd horizontal position are drawn by sampling a subscreen pixel, and columns of dots with an even horizontal position are drawn by sampling a main screen pixel. <sup>[3]</sup> A [[CRT]] televsion blends the adjacent dots together, creating the transparency effect. | ||
Psuedo hi-res mode is not effective in [[Mode 5]] or [[Mode 6]]. | |||
As of 2022, there are no tools for working with psuedo hi-res mode. <sup>[2]</sup> | As of 2022, there are no tools for working with psuedo hi-res mode. <sup>[2]</sup> | ||
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# https://forums.nesdev.org/viewtopic.php?p=279353#p279353 | # https://forums.nesdev.org/viewtopic.php?p=279353#p279353 | ||
# https://board.zsnes.com/phpBB3/viewtopic.php?p=47257 | # https://board.zsnes.com/phpBB3/viewtopic.php?p=47257 | ||
# [https://archive.org/details/SNESDevManual/book1/page/n74 page 2-9-1 of Book I] of the official Super Nintendo development manual | # Chapter 9. [https://archive.org/details/SNESDevManual/book1/page/n74 page 2-9-1 of Book I] of the official Super Nintendo development manual | ||
[[Category:Video]] | [[Category:Video]] | ||
[[Category:Official Jargon]] | |||
Latest revision as of 12:26, 25 January 2024
Pseudo Hi-Res Mode is a transparency technique that displays the Main Screen and Sub Screen at the same time without digital color math blending any pixels. It is enabled by setting bit 3 of SETINI (2133h). Columns of dots with an odd horizontal position are drawn by sampling a subscreen pixel, and columns of dots with an even horizontal position are drawn by sampling a main screen pixel. [3] A CRT televsion blends the adjacent dots together, creating the transparency effect.
Psuedo hi-res mode is not effective in Mode 5 or Mode 6.
As of 2022, there are no tools for working with psuedo hi-res mode. [2]
Examples
- the HUD in Jurassic Park
- the trees in Kirby's Dreamland 3
See Also
References
- https://nesdoug.com/2022/05/30/other-modes
- https://forums.nesdev.org/viewtopic.php?p=279353#p279353
- https://board.zsnes.com/phpBB3/viewtopic.php?p=47257
- Chapter 9. page 2-9-1 of Book I of the official Super Nintendo development manual