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A scanline is a single row of pixels, produced by a single horizontal sweep of the raster beam. A scanline takes 1364 master cycles.[1]

It takes the raster beam approximately 63.5 microseconds to draw a scanline and hblank.[3]

Scanlines can be long or short.

See Also


  1. https://problemkaputt.de/fullsnes.htm#snestimingppumemoryaccesses
  2. https://problemkaputt.de/fullsnes.htm#snestiminghvevents
  3. Appendix 20 of Book I of the official Super Nintendo development manual