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Scanline: Difference between revisions
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A | A '''scanline''' is a single row of dots, produced by a single horizontal sweep of the raster beam across the TV screen from left to right. A scanline takes 1364 [[master cycle]]s.<sup>[1]</sup> | ||
It takes the raster beam approximately 63.5 microseconds to draw a scanline and [[hblank]].<sup>[3]</sup> | It takes the raster beam approximately 63.5 microseconds to draw a scanline and then [[hblank]].<sup>[3]</sup> | ||
Scanlines can be | Scanlines can be 4 cycles longer or shorter than normal. | ||
=== See Also === | |||
* [[239-Line Mode]] | |||
* [[224-Line Mode]] | |||
=== References === | === References === | ||
# https://problemkaputt.de/fullsnes.htm#snestimingppumemoryaccesses | # https://problemkaputt.de/fullsnes.htm#snestimingppumemoryaccesses | ||
# https://problemkaputt.de/fullsnes.htm#snestiminghvevents | # https://problemkaputt.de/fullsnes.htm#snestiminghvevents | ||
# [https://archive.org/details/SNESDevManual/book1/page/n214 Appendix 20 of Book I] of the official Super Nintendo development manual | # [https://archive.org/details/SNESDevManual/book1/page/n214 Appendix A-20 of Book I] of the official Super Nintendo development manual | ||
[[Category:Video]] | [[Category:Video]] | ||
Latest revision as of 17:20, 18 August 2024
A scanline is a single row of dots, produced by a single horizontal sweep of the raster beam across the TV screen from left to right. A scanline takes 1364 master cycles.[1]
It takes the raster beam approximately 63.5 microseconds to draw a scanline and then hblank.[3]
Scanlines can be 4 cycles longer or shorter than normal.
See Also
References
- https://problemkaputt.de/fullsnes.htm#snestimingppumemoryaccesses
- https://problemkaputt.de/fullsnes.htm#snestiminghvevents
- Appendix A-20 of Book I of the official Super Nintendo development manual