PPU registers: Revision history

10 June 2022

• curprev 09:4809:48, 10 June 2022‎ Fiskbit talk contribs‎ 25,884 bytes −46‎ →‎Status ($2002): Improves open bus bits description.

16 May 2022

• curprev 09:5409:54, 16 May 2022‎ Lidnariq talk contribs‎ m 25,930 bytes +27‎ →‎Controller ($2000) > write: Link to explanation of how 8x16 sprites are enumerated

11 December 2021

• curprev 21:0621:06, 11 December 2021‎ Lidnariq talk contribs‎ 25,903 bytes +414‎ →‎Status ($2002): big ol' warning label about don't poll $2002

29 December 2020

• curprev 06:3206:32, 29 December 2020‎ Rainwarrior talk contribs‎ 25,489 bytes +40‎ →‎Mask ($2001) > write: PAL colour functions

12 December 2020

• curprev 05:1505:15, 12 December 2020‎ Rainwarrior talk contribs‎ 25,449 bytes +419‎ →‎Data ($2007) read/write: should really have a note about the DPCM conflict here

9 November 2020

• curprev 12:5412:54, 9 November 2020‎ Quietust talk contribs‎ m 25,030 bytes −12‎ Bulleted lists shouldn't have blank lines between entries, otherwise each entry is rendered as its own distinct list

6 November 2020

• curprev 06:0506:05, 6 November 2020‎ Tepples talk contribs‎ 25,042 bytes +24‎ The article is not about ventriloquism. Might "priming read" work better?

23 June 2020

• curprev 16:3316:33, 23 June 2020‎ Krzysiobal talk contribs‎ 25,018 bytes +37‎ →‎Data ($2007) read/write: - nobody mentioned that playing with PPUADDR also clobberts the internal bits that PPUCTRL[1..0] controls.

10 May 2020

• curprev 00:4300:43, 10 May 2020‎ Lidnariq talk contribs‎ 24,981 bytes +102‎ protocol-relative URLs are no longer automatically converted into links?? also a few "2003" should have been "2004"

24 April 2020

• curprev 06:3006:30, 24 April 2020‎ Lidnariq talk contribs‎ 24,879 bytes +377‎ →‎Address ($2006) >> write x2: mention PPUADDR bus conflict here.

10 October 2019

• curprev 23:3023:30, 10 October 2019‎ Lidnariq talk contribs‎ 24,502 bytes −68‎ Undo good-faith edit that removed protocol-relative URLs by PostNES (talk)
• curprev 22:0222:02, 10 October 2019‎ PostNES talk contribs‎ m 24,570 bytes +68‎ wikify

17 March 2019

• curprev 03:0103:01, 17 March 2019‎ Tepples talk contribs‎ 24,502 bytes +20‎ →‎Controller ($2000) > write: twicetime in #nesdev on EFnet was confused about whether writing to $2000 with bit 7 set always caused an NMI. I replied that it's about changing from 0 to 1.

6 February 2019

• curprev 07:1407:14, 6 February 2019‎ Lidnariq talk contribs‎ m 24,482 bytes −35‎ protocol-relative links to forum

16 January 2019

• curprev 18:1018:10, 16 January 2019‎ Tepples talk contribs‎ 24,517 bytes +117‎ →‎OAM data ($2004) read/write: Do not write directly

15 December 2018

• curprev 21:1821:18, 15 December 2018‎ Lidnariq talk contribs‎ 24,400 bytes +182‎ →‎Bit 0 bus conflict: it's not a bus conflict, and we appear to have an accurate explanation of what's causing it now.

14 November 2018

• curprev 19:0519:05, 14 November 2018‎ Pubby talk contribs‎ 24,218 bytes +53‎ clarify race condition behavior

4 November 2018

• curprev 00:2000:20, 4 November 2018‎ Koitsu talk contribs‎ 24,165 bytes −1,008‎ →‎Mask ($2001) > write

19 October 2018

• curprev 07:2807:28, 19 October 2018‎ Trozze talk contribs‎ 25,173 bytes +1‎ Fixed incorrectly expanded MSB and LSB acronyms

18 October 2018

• curprev 23:3323:33, 18 October 2018‎ Qalle talk contribs‎ 25,172 bytes +163‎ clarifications

11 August 2018

• curprev 17:3417:34, 11 August 2018‎ Rainwarrior talk contribs‎ 25,009 bytes −24‎ →‎Bit 0 bus conflict: I think predicting a sprite 0 fail crash is going a bit extreme, all we need to warn is that the mischosen background can interfere with sprite 0 on that particular scanline.

21 July 2017

• curprev 15:0215:02, 21 July 2017‎ Rainwarrior talk contribs‎ 25,033 bytes +59‎ →‎Controller ($2000) > write: linking Sprite Size which is almost an orphan

13 February 2017

• curprev 23:3723:37, 13 February 2017‎ Tepples talk contribs‎ 24,974 bytes −435‎ →‎Color Control: $xE and $xF are unaffected. Also removed misleading color emphasis value table, as the verdict in https://forums.nesdev.com/viewtopic.php?f=16&t=15416 was that they're not even a good approximation.

4 February 2017

• curprev 03:3103:31, 4 February 2017‎ Lidnariq talk contribs‎ 25,409 bytes +206‎ →‎OAMADDR precautions: should explicitly mention here that the OAMADDR doesn't affect the 2C03, 2C04, or 2C05.

2 February 2017

• curprev 12:4012:40, 2 February 2017‎ Zepper talk contribs‎ 25,203 bytes +32‎ →‎Color Control: Updated table.

22 January 2017

• curprev 03:1803:18, 22 January 2017‎ Zepper talk contribs‎ m 25,171 bytes −1‎ →‎Color Control: typo
• curprev 03:1803:18, 22 January 2017‎ Zepper talk contribs‎ 25,172 bytes +439‎ →‎Color Control: Added % for each RGB component for color emphasis in the RGB color space.

20 June 2016

• curprev 00:5200:52, 20 June 2016‎ Pubby talk contribs‎ 24,733 bytes 0‎ be consistent with spelling of grey (gray)

21 December 2015

• curprev 20:2720:27, 21 December 2015‎ Tepples talk contribs‎ 24,733 bytes +37‎ →‎OAM DMA ($4014) > write: Consensus was not to use RFC 2119 key words
• curprev 07:5707:57, 21 December 2015‎ Lidnariq talk contribs‎ 24,696 bytes +6‎ →‎OAM DMA ($4014) > write: it's not really "idle"

22 November 2015

• curprev 13:5713:57, 22 November 2015‎ Ulfalizer talk contribs‎ 24,690 bytes −23‎ Rewrite confusing sentence re. when the sprite 0 hit flag is cleared

17 September 2015

• curprev 21:0521:05, 17 September 2015‎ Rainwarrior talk contribs‎ 24,713 bytes +121‎ →‎Mask ($2001) > write: reference for Dendy emphasis

22 July 2015

• curprev 17:0417:04, 22 July 2015‎ Rainwarrior talk contribs‎ m 24,592 bytes +45‎ →‎Ports: converting link to reference

19 July 2015

• curprev 00:1600:16, 19 July 2015‎ Great Hierophant talk contribs‎ 24,547 bytes +20‎ →‎OAM data ($2004) read/write

29 May 2015

• curprev 21:3021:30, 29 May 2015‎ Lidnariq talk contribs‎ m 24,527 bytes +7‎ →‎OAMADDR precautions: It's worse than that. Only sometimes it's that obvious, but for other CPU-PPU phases it caused less describable corruption.
• curprev 21:1521:15, 29 May 2015‎ Myask talk contribs‎ m 24,520 bytes −1‎ →‎OAMADDR precautions: :oops:
• curprev 21:1421:14, 29 May 2015‎ Myask talk contribs‎ 24,521 bytes +110‎ →‎OAMADDR precautions: "corrupt" is vague, specify from reference
• curprev 21:0421:04, 29 May 2015‎ Myask talk contribs‎ m 24,411 bytes −46‎ Use reference-name to combine citations.
• curprev 21:0121:01, 29 May 2015‎ Myask talk contribs‎ 24,457 bytes +206‎ →‎OAM DMA ($4014) > write: OAMADDR Sprite-cycling technique...will hit one copy bug or the other.

27 March 2015

• curprev 10:0810:08, 27 March 2015‎ Rainwarrior talk contribs‎ m 24,251 bytes +20‎ →‎Controller ($2000) > write: clarify flag
• curprev 10:0710:07, 27 March 2015‎ Rainwarrior talk contribs‎ 24,231 bytes +421‎ →‎Controller ($2000) > write: caveat that enabling NMI flag can trigger immediate NMI if in mid-vblank, and how to avoid

26 March 2015

• curprev 21:5621:56, 26 March 2015‎ Tepples talk contribs‎ 23,810 bytes +1,008‎ →‎Ports: Renamed from "Notes"; added PPUGenLatch

25 March 2015

• curprev 02:5402:54, 25 March 2015‎ Rainwarrior talk contribs‎ m 22,802 bytes −42‎ →‎note: resolve redirect to PPU scrolling

24 March 2015

• curprev 23:5523:55, 24 March 2015‎ Rainwarrior talk contribs‎ m 22,844 bytes −3‎ →‎Notes: sorry, information was at PPU rendering (PPU frame timing might need a merge?)
• curprev 23:5223:52, 24 March 2015‎ Rainwarrior talk contribs‎ m 22,847 bytes −55‎ →‎Notes: image diagram is part of a larger article on frame timing (we shouldn't substitute image for article)

20 March 2015

• curprev 20:2520:25, 20 March 2015‎ Rainwarrior talk contribs‎ 22,902 bytes 0‎ →‎Summary: since the common names are used as table of contents links here, moving them to the left column
• curprev 20:0820:08, 20 March 2015‎ Rainwarrior talk contribs‎ 22,902 bytes 0‎ revert of vblank capitalization (see talk)

16 March 2015

• curprev 19:3119:31, 16 March 2015‎ Tepples talk contribs‎ 22,902 bytes +88‎ 2C07 starts refresh at "scanline 20" in what convention?
• curprev 18:5518:55, 16 March 2015‎ Lidnariq talk contribs‎ 22,814 bytes +37‎ →‎Color Control: reformat a little
• curprev 18:4118:41, 16 March 2015‎ Lidnariq talk contribs‎ 22,777 bytes +95‎ →‎Obscure details of OAMADDR: more usefully-named subheadings