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Interlacing

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The SNES supports interlacing. It is available only in Mode 5 and Mode 6. [3] It is enabled by writing a 1 to bit 0 of SETINI.

In interlacing, the electron beam begins scanning at the top-middle of the screen instead of the top-left and finishes scanning at the middle-bottom instead of the bottom-right. [2]

References

  1. Official Super Nintendo development manual on interlacing: page 2-18-1 of Book I
  2. https://archive.org/details/SNESDevManual/book1/page/n59
  3. https://nesdoug.com/2022/05/30/other-modes