Init code: Revision history

15 January 2025

• curprev 14:0014:00, 15 January 2025‎ Quietust talk contribs‎ m 4,396 bytes +136‎ explain why X is still 0, and initialize zero page with $00,X just in case you're using an assembler that emits absolute addresses when it's more than 2 digits (don't know if there are any, but there might be)
• curprev 02:5302:53, 15 January 2025‎ Quietust talk contribs‎ 4,260 bytes +230‎ add notes - you need to zero $2000/$2001 for compatibility with toploaders, and you need to wait 2 frames for compatibility with frontloaders

30 September 2024

• curprev 03:4303:43, 30 September 2024‎ TakuikaNinja talk contribs‎ 4,030 bytes −11‎ Improve advice regarding APU IRQs, and adjust priorities for certain init tasks.

24 August 2019

• curprev 21:3821:38, 24 August 2019‎ Rainwarrior talk contribs‎ 4,041 bytes −106‎ trying to pare down this description of vblank flag, the statistics are kind of minutiae that don't belong in this example IMO
• curprev 21:2221:22, 24 August 2019‎ Rainwarrior talk contribs‎ 4,147 bytes +211‎ moving the "special case" and OAM assumptions out of the sample and into some following notes (where to put OAM isn't really in scope for this example, and using $700 for reset-persist is ANYTHING but universal)

10 January 2016

• curprev 05:5105:51, 10 January 2016‎ Tepples talk contribs‎ 3,936 bytes +94‎ clarified explanation of first BIT $2002 based on suggestions from alphamule in #nesdev

11 September 2014

• curprev 04:0104:01, 11 September 2014‎ Koitsu talk contribs‎ 3,842 bytes −17‎ Removal of syntax highlighter

25 August 2013

• curprev 07:2507:25, 25 August 2013‎ Koitsu talk contribs‎ 3,859 bytes −4‎ No edit summary

24 August 2013

• curprev 09:0509:05, 24 August 2013‎ Koitsu talk contribs‎ 3,863 bytes +22‎ No edit summary

1 September 2012

• curprev 18:3218:32, 1 September 2012‎ Tepples talk contribs‎ m 3,841 bytes −5‎ Parodius Da? more like Parodius DEL

16 March 2011

• curprev 01:1301:13, 16 March 2011‎ Tepples talk contribs‎ 3,846 bytes +65‎ APU init code too

13 July 2010

• curprev 19:0019:00, 13 July 2010‎ Tepples talk contribs‎ m 3,781 bytes +105‎ clarified my last edit
• curprev 18:5918:59, 13 July 2010‎ Tepples talk contribs‎ 3,676 bytes +138‎ caveat about clearing all RAM first

24 June 2010

• curprev 13:3113:31, 24 June 2010‎ Tepples talk contribs‎ 3,538 bytes +315‎ skip $200,x and explain why

28 March 2010

• curprev 20:5320:53, 28 March 2010‎ Tepples talk contribs‎ 3,223 bytes +212‎ what happens next
• curprev 20:4220:42, 28 March 2010‎ Tepples talk contribs‎ 3,011 bytes +74‎ Why zero-fill

21 December 2009

• curprev 18:5218:52, 21 December 2009‎ Tepples talk contribs‎ 2,937 bytes −17‎ A couple other pages got moved in the transition too

20 December 2009

• curprev 17:5817:58, 20 December 2009‎ Tepples talk contribs‎ 2,954 bytes +155‎ the ppu init page moved when we moved to nesdev.com
• curprev 17:5517:55, 20 December 2009‎ Tepples talk contribs‎ 2,799 bytes +102‎ Because 'sei' is the first instruction, disabling IRQs need not sit in the fixed bank or the replicated portion

13 June 2009

• curprev 04:2204:22, 13 June 2009‎ Ndwiki talk contribs‎ m 2,697 bytes 0‎ 1 revision: Rest of pages not related to reference

26 March 2008

• curprev 00:1500:15, 26 March 2008‎ Tepples talk contribs‎ m 2,697 bytes +2,697‎ internal link