Talk:The skinny on NES scrolling: Difference between revisions
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Rainwarrior (talk | contribs) (explaining changes 1/08/2013) |
Rainwarrior (talk | contribs) |
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* Revised the $2006, $2005, $2005, $2006 example to be a more practical example, explaining how to set the scroll for a specific X/Y/nametable. | * Revised the $2006, $2005, $2005, $2006 example to be a more practical example, explaining how to set the scroll for a specific X/Y/nametable. | ||
Please check for errors, and make corrections as necessary. | |||
- [[User:Rainwarrior|Rainwarrior]] 03:31, 8 January 2013 (MST) | - [[User:Rainwarrior|Rainwarrior]] 03:31, 8 January 2013 (MST) | ||
Revision as of 10:32, 8 January 2013
Changes 1/08/2013
I made the following changes:
- I removed the first example, since it appeared to be broken w.r.t. fine Y scroll.
- I added a note about $2007 having side effects on v, please elaborate or correct it if anything is wrong. I note that nintendulator does a weird Y-1 thing if rendering is enabled when it is used? I'm not sure what is going on there.
- Bit 14 of t was inconsistently sometimes referred to as bit 15.
- Added a note about Y increment of v, which appears to occur on pixel 250 in nintendulator? I find this confusing, so I would appreciate if someone with authoritative knowledge could correctly explain the timing for the Y increment of v. Complete wrapping logic would also be helpful.
- The imaginary bit 15 was removed from the examples at the top of the page, for clarity and consistency.
- Added examples for simple scrolling, where only X, or no split is needed.
- Revised the $2006, $2005, $2005, $2006 example to be a more practical example, explaining how to set the scroll for a specific X/Y/nametable.
Please check for errors, and make corrections as necessary.
- Rainwarrior 03:31, 8 January 2013 (MST)
