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Horizontal Pseudo 512 Mode: Difference between revisions

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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 the use of [[color math]].  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.


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>

Revision as of 01:00, 9 September 2023

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.

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

  1. https://nesdoug.com/2022/05/30/other-modes
  2. https://forums.nesdev.org/viewtopic.php?p=279353#p279353
  3. https://board.zsnes.com/phpBB3/viewtopic.php?p=47257
  4. page 2-9-1 of Book I of the official Super Nintendo development manual
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