PPU registers: Revision history

7 February 2015

• curprev 06:1106:11, 7 February 2015‎ Rainwarrior talk contribs‎ m 20,039 bytes 0‎ →‎Mask ($2001) > write: rm extra newline

3 February 2015

• curprev 03:0903:09, 3 February 2015‎ Rainwarrior talk contribs‎ 20,039 bytes +144‎ →‎OAM DMA ($4014) > write: potential OAM corruption issue (more Errata)
• curprev 03:0103:01, 3 February 2015‎ Rainwarrior talk contribs‎ 19,895 bytes +1,233‎ OAM DMA should be described here as well
• curprev 01:4201:42, 3 February 2015‎ Rainwarrior talk contribs‎ 18,662 bytes −24‎ $2001 moving PAL reference to references section, rm vertical mirroring suggesting (applies to any horizontal scrolling situation)
• curprev 01:3301:33, 3 February 2015‎ Rainwarrior talk contribs‎ 18,686 bytes +1,299‎ →‎Mask ($2001) > write: rewriting to include "errata" and more information about rendering on/off

2 August 2014

• curprev 13:4013:40, 2 August 2014‎ Tepples talk contribs‎ 17,387 bytes +96‎ →‎Mask ($2001) > write

22 May 2014

• curprev 00:4400:44, 22 May 2014‎ Lidnariq talk contribs‎ 17,291 bytes −86‎ the "other oddities" are what are explained in the following paragraph, so remove it. Include 2C07 differences.

18 May 2014

• curprev 02:2602:26, 18 May 2014‎ Lidnariq talk contribs‎ 17,377 bytes +300‎ →‎OAM data ($2004) read/write: oamdata isn't readable on older ppus

13 August 2013

• curprev 16:2616:26, 13 August 2013‎ Tepples talk contribs‎ 17,077 bytes +236‎ →‎Data ($2007) read/write: shared state caveat

31 July 2013

• curprev 23:2223:22, 31 July 2013‎ Lidnariq talk contribs‎ m 16,841 bytes +101‎ →‎Data ($2007) read/write: link to the "read 2007 during rendering" discussion.
• curprev 22:5722:57, 31 July 2013‎ Lidnariq talk contribs‎ 16,740 bytes +233‎ stop blaming OAMDATA; start blaming OAMADDR.

22 July 2013

• curprev 04:5204:52, 22 July 2013‎ Tepples talk contribs‎ m 16,507 bytes +24‎ →‎Notes: typo
• curprev 04:0104:01, 22 July 2013‎ Tepples talk contribs‎ 16,483 bytes +1,490‎ expand the "Note" (Bit 0 bus conflict) in PPUCTRL; other copyedits

17 July 2013

• curprev 20:3920:39, 17 July 2013‎ Ulfalizer talk contribs‎ 14,993 bytes +90‎ Probably best to just ignore writes to $2004 during rendering for emulation
• curprev 20:3620:36, 17 July 2013‎ Ulfalizer talk contribs‎ m 14,903 bytes +1‎ No edit summary
• curprev 20:3520:35, 17 July 2013‎ Ulfalizer talk contribs‎ 14,902 bytes +109‎ Sprite evaluation status might affect the glitchy OAMADDR increment when accessing OAMDATA during rendering
• curprev 20:3120:31, 17 July 2013‎ Ulfalizer talk contribs‎ 14,793 bytes +392‎ Writes to OAMDATA during rendering do not modify memory but do bump OAMADDR in a glitchy way

2 July 2013

• curprev 11:2211:22, 2 July 2013‎ Ulfalizer talk contribs‎ 14,401 bytes +399‎ Flesh out master/slave mode description

23 June 2013

• curprev 18:5918:59, 23 June 2013‎ Grapeshot talk contribs‎ 14,002 bytes +26‎ added link to list of games using color emphasis

18 June 2013

• curprev 18:0518:05, 18 June 2013‎ Lidnariq talk contribs‎ 13,976 bytes +258‎ →‎OAM data ($2004) read/write: big fat warning label

28 May 2013

• curprev 22:2722:27, 28 May 2013‎ Lidnariq talk contribs‎ 13,718 bytes +421‎ →‎Note: mention and link to glitchy scanline discussion

4 May 2013

• curprev 13:1713:17, 4 May 2013‎ Tepples talk contribs‎ 13,297 bytes −504‎ Undo revision 6204 by Ulfalizer (talk): "fancy-schmancy line drawing characters" aren't in all fonts, and automatic substitution by the browser breaks monospace
• curprev 09:0909:09, 4 May 2013‎ Ulfalizer talk contribs‎ 13,801 bytes +504‎ Use fancy-schmancy line drawing characters

23 April 2013

• curprev 14:2514:25, 23 April 2013‎ Tepples talk contribs‎ 13,297 bytes +25‎ →‎Mask ($2001) > write: "done horizontally" doesn't look clear

22 April 2013

• curprev 21:2821:28, 22 April 2013‎ Ulfalizer talk contribs‎ 13,272 bytes +56‎ Monochrome bit has no effect on writes to the palette (maybe obvious - confirmed in Visual 2C02)
• curprev 01:5001:50, 22 April 2013‎ Ulfalizer talk contribs‎ 13,216 bytes −17‎ Clarify that sprite overflow is broken and not merily complex

27 March 2013

• curprev 15:3115:31, 27 March 2013‎ Ulfalizer talk contribs‎ 13,233 bytes +28‎ Clarify PPUDATA read buffer address range.

25 March 2013

• curprev 02:0402:04, 25 March 2013‎ Ulfalizer talk contribs‎ 13,205 bytes +3‎ Linkify PPU memory map and move a paragraph out of 'The PPUDATA read buffer' section

23 March 2013

• curprev 10:4910:49, 23 March 2013‎ Ulfalizer talk contribs‎ 13,202 bytes +78‎ No more sprites will be found after the OAM pointer has reached the end of OAM.

22 March 2013

• curprev 04:5304:53, 22 March 2013‎ Ulfalizer talk contribs‎ 13,124 bytes +4‎ Use PPUDATA instead of $2007 to be more consistent with other sections.
• curprev 04:0504:05, 22 March 2013‎ Ulfalizer talk contribs‎ 13,120 bytes +80‎ Clarify how DMA works.
• curprev 03:3603:36, 22 March 2013‎ Quietust talk contribs‎ 13,040 bytes +463‎ →‎Obscure details of OAMADDR
• curprev 03:3403:34, 22 March 2013‎ Ulfalizer talk contribs‎ 12,577 bytes +57‎ OAMADDR obscure behavior clarification.
• curprev 03:2703:27, 22 March 2013‎ Ulfalizer talk contribs‎ 12,520 bytes +8‎ Small clarification of OAMADDR obscure behavior.
• curprev 03:2503:25, 22 March 2013‎ Ulfalizer talk contribs‎ 12,512 bytes +432‎ Add some OAMADDR details that I have verified in Visual 2C02.

21 March 2013

• curprev 06:0506:05, 21 March 2013‎ Ulfalizer talk contribs‎ 12,080 bytes −249‎ Undo revision 5784 by Ulfalizer (talk) (Should wait until the copying behavior has been verified. I can't reproduce it.)
• curprev 04:2604:26, 21 March 2013‎ Ulfalizer talk contribs‎ 12,329 bytes +249‎ Clarify how DMA transfer works and add some obscure details about $2003

19 March 2013

• curprev 19:0919:09, 19 March 2013‎ Ulfalizer talk contribs‎ 12,080 bytes +340‎ Clarify EXT input/output.
• curprev 06:1006:10, 19 March 2013‎ Ulfalizer talk contribs‎ 11,740 bytes +93‎ Small PPUDATA clarification.
• curprev 05:5605:56, 19 March 2013‎ Ulfalizer talk contribs‎ 11,647 bytes +384‎ Reads from the palette do affect the internal buffer. Also clarify when the internal buffer is updated.

16 March 2013

• curprev 17:2817:28, 16 March 2013‎ Ulfalizer talk contribs‎ 11,263 bytes +153‎ No edit summary
• curprev 15:2915:29, 16 March 2013‎ Ulfalizer talk contribs‎ m 11,110 bytes 0‎ Small grammar fix.
• curprev 15:2515:25, 16 March 2013‎ Ulfalizer talk contribs‎ 11,110 bytes +206‎ Clarify when the vblank/sprite 0/overflow flags are set and cleared.
• curprev 02:1902:19, 16 March 2013‎ Tepples talk contribs‎ 10,904 bytes +84‎ →‎Status ($2002) < read: Set and clear times for overflow bit per talk

21 December 2012

• curprev 17:5817:58, 21 December 2012‎ Tepples talk contribs‎ 10,820 bytes +58‎ →‎Scroll ($2005) >> write x2: start to make PPU scrolling easier to find

1 November 2012

• curprev 16:0416:04, 1 November 2012‎ Quietust talk contribs‎ m 10,762 bytes +453‎ →‎Controller ($2000) > write

4 October 2012

• curprev 01:1501:15, 4 October 2012‎ Rainwarrior talk contribs‎ 10,309 bytes +49‎ →‎Note: linking orphaned page about $2007 reads during rendering

31 August 2012

• curprev 19:4619:46, 31 August 2012‎ Tepples talk contribs‎ m 10,260 bytes −5‎ Parodius Da? more like Parodius DEL

2 June 2012

• curprev 18:5418:54, 2 June 2012‎ Tepples talk contribs‎ 10,265 bytes −68‎ →‎note: "Skinny" is on the wiki now

26 May 2012

• curprev 20:2120:21, 26 May 2012‎ Rainwarrior talk contribs‎ m 10,333 bytes +77‎ →‎Notes: link to clarify sprite overflow