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H/V Counter Latch: Difference between revisions

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(added page of official dev manual which describes this in more detail)
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=== References ===
=== References ===
* [https://archive.org/details/SNESDevManual/book1/page/n76 page 2-11-1 of Book I] of the official Super Nintendo development manual
* [https://archive.org/details/SNESDevManual/book1/page/n76 page 2-11-1 of Book I] of the official Super Nintendo development manual
* [https://archive.org/details/SNESDevManual/book2/page/n334 page 4-2-4 of Book II], lbid
* 2.3 The Super NES Horizontal/Vertical Counter on [https://archive.org/details/SNESDevManual/book2/page/n334 page 4-2-4 of Book II], lbid
* https://problemkaputt.de/fullsnes.htm#snespputimersandstatus
* https://problemkaputt.de/fullsnes.htm#snespputimersandstatus


[[Category:Video]]
[[Category:Video]]
[[Category:Timing]]
[[Category:Registers]]

Latest revision as of 04:50, 18 August 2024

The H/V Counter Latch (SLHV, or Software Latch Horizontal/Vertical) is a dummy read-only S-PPU1 register located at 2137h. Its sole purpose is to cause the PPU to latch the current raster beam position into OPHCT and OPVCT when it is read. The value read is open bus.

See Also

References