NSF: Revision history

22 June 2023

• curprev 06:1806:18, 22 June 2023‎ Rainwarrior talk contribs‎ 22,513 bytes +61‎ →‎Header Overview: more information about frequency of extended character encodings, Shift-JIS is the more common, used by many Famicompo participants. 1252 Latin I don't have any ready examples for.

9 March 2023

• curprev 22:3022:30, 9 March 2023‎ Rainwarrior talk contribs‎ 22,452 bytes +199‎ →‎References: reference the original specification and Kevtris' HardNES implementation

25 May 2021

• curprev 08:3408:34, 25 May 2021‎ NewRisingSun talk contribs‎ 22,253 bytes +75‎ Several NSF-format files with VT02+ audio have already been released, so we might as well make this official.

9 November 2020

• curprev 15:5815:58, 9 November 2020‎ Quietust talk contribs‎ m 22,178 bytes −3‎ No edit summary

26 June 2020

• curprev 13:5913:59, 26 June 2020‎ SW talk contribs‎ 22,181 bytes +12‎ →‎See also

1 July 2019

• curprev 17:5917:59, 1 July 2019‎ Rainwarrior talk contribs‎ 22,169 bytes +106‎ →‎Multi-chip tunes: describe the 5B + N163/VRC7 conflict, describe a potential solution, also unify FDS description with the list format instead of separating it
• curprev 16:4116:41, 1 July 2019‎ Tepples talk contribs‎ 22,063 bytes +124‎ →‎Multi-chip tunes: VRC7/N163 silence register

5 March 2019

• curprev 00:4100:41, 5 March 2019‎ Rainwarrior talk contribs‎ 21,939 bytes +295‎ →‎Initializing a tune: NSF2 forward compatibility suggestion for Y

3 March 2019

• curprev 05:5505:55, 3 March 2019‎ Rainwarrior talk contribs‎ 21,644 bytes +92‎ →‎Header Overview: string encoding
• curprev 05:5005:50, 3 March 2019‎ Rainwarrior talk contribs‎ m 21,552 bytes −15‎ →‎APU: NSF2 no longer proposal
• curprev 05:4905:49, 3 March 2019‎ Rainwarrior talk contribs‎ 21,567 bytes +239‎ updating for NSF2

17 February 2019

• curprev 05:3705:37, 17 February 2019‎ Rainwarrior talk contribs‎ 21,328 bytes −24‎ The reason given for no IRQ is probably false (I don't know if there was ever a hardware player that used IRQ to drive PLAY?), reviewing old forum posts and players it seems IRQ was just never consistently available and rippers collectively eschewed it.

20 November 2018

• curprev 05:5005:50, 20 November 2018‎ Koitsu talk contribs‎ 21,352 bytes +23‎ No edit summary

31 August 2018

• curprev 01:0801:08, 31 August 2018‎ Rainwarrior talk contribs‎ 21,329 bytes +13‎ →‎Initializing a tune: need to clear all the length counters by writing 0 to $4015 as well before enabling all the channels.

25 August 2018

• curprev 18:5218:52, 25 August 2018‎ Rainwarrior talk contribs‎ 21,316 bytes +211‎ →‎Caveats: note about PowerPak and how its banking implementation fails to switch tracks for this case

21 August 2018

• curprev 05:2505:25, 21 August 2018‎ Rainwarrior talk contribs‎ 21,105 bytes +126‎ →‎Header Overview: note that Japanese mostly doesn't appear in game rips, ASCII is good enough in majority of cases
• curprev 05:0805:08, 21 August 2018‎ Rainwarrior talk contribs‎ 20,979 bytes +228‎ →‎Header Overview: note the string types

9 August 2018

• curprev 07:5407:54, 9 August 2018‎ Rainwarrior talk contribs‎ 20,751 bytes −202‎ →‎Header Overview: removing premature designation

12 September 2017

• curprev 20:0820:08, 12 September 2017‎ Tepples talk contribs‎ m 20,953 bytes +84‎ →‎Header Overview: word it better
• curprev 20:0420:04, 12 September 2017‎ Tepples talk contribs‎ 20,869 bytes +63‎ →‎Header Overview: Little endian. B00daW on FamiTracker.org Discord server asked for this clarification.

18 June 2017

• curprev 01:3901:39, 18 June 2017‎ B00daW talk contribs‎ 20,806 bytes +201‎ expanded "extra sound chip support"

16 May 2016

• curprev 20:2520:25, 16 May 2016‎ Rainwarrior talk contribs‎ 20,605 bytes +139‎ forum reference for psuedo-irq technique

1 February 2016

• curprev 09:2909:29, 1 February 2016‎ Rainwarrior talk contribs‎ m 20,466 bytes −38‎ →‎Pseudo-IRQ Technique: trim speculation on why some hardware players fail (the reasons are probably various)
• curprev 09:2609:26, 1 February 2016‎ Rainwarrior talk contribs‎ 20,504 bytes +584‎ Deflemask technique does not seem to be outside of spec if it allows non-returning play, revising.
• curprev 04:5304:53, 1 February 2016‎ Rainwarrior talk contribs‎ m 19,920 bytes −5‎ →‎Pseudo-IRQ Variant: numbered list formatting
• curprev 04:5304:53, 1 February 2016‎ Rainwarrior talk contribs‎ 19,925 bytes +865‎ adding note about deflemask trick

29 July 2015

• curprev 07:3307:33, 29 July 2015‎ Rainwarrior talk contribs‎ m 19,060 bytes +4‎ →‎Caveats: PowerPak

17 March 2015

• curprev 22:3922:39, 17 March 2015‎ Tepples talk contribs‎ 19,056 bytes +66‎ →‎See also: 31

28 October 2014

• curprev 03:2103:21, 28 October 2014‎ Rainwarrior talk contribs‎ 18,990 bytes +122‎ →‎Playing a tune: note about common use for non-returning play

25 January 2014

• curprev 00:1200:12, 25 January 2014‎ Blargg talk contribs‎ m 18,868 bytes +79‎ Clean up lede

8 May 2013

• curprev 22:5022:50, 8 May 2013‎ Rainwarrior talk contribs‎ 18,789 bytes 0‎ →‎Playing a tune: 16639 is closer than 16640

10 March 2013

• curprev 02:3102:31, 10 March 2013‎ Zzo38 talk contribs‎ 18,789 bytes +36‎ No edit summary

8 March 2013

• curprev 20:0020:00, 8 March 2013‎ Rainwarrior talk contribs‎ 18,753 bytes +133‎ clarifying use of stack
• curprev 14:2714:27, 8 March 2013‎ Tepples talk contribs‎ 18,620 bytes +121‎ →‎Playing a tune: Return every few frames if possible

27 January 2013

• curprev 22:3622:36, 27 January 2013‎ Zzo38 talk contribs‎ 18,499 bytes −74‎ No edit summary

29 November 2012

• curprev 21:2721:27, 29 November 2012‎ Rainwarrior talk contribs‎ 18,573 bytes +151‎ →‎Caveats: clarifying use of PAL/NTSC bits
• curprev 01:2601:26, 29 November 2012‎ Rainwarrior talk contribs‎ m 18,422 bytes −207‎ →‎VRCVI: clarification: 9003 is relevant,

17 November 2012

• curprev 06:5706:57, 17 November 2012‎ Rainwarrior talk contribs‎ m 18,629 bytes −44‎ →‎Header Overview: PAL/NTSC bits are unlike NES 2.0

15 November 2012

• curprev 18:1018:10, 15 November 2012‎ Rainwarrior talk contribs‎ 18,673 bytes +204‎ extensions NSFe / NSF2

7 October 2012

• curprev 20:1920:19, 7 October 2012‎ Zzo38 talk contribs‎ 18,469 bytes +430‎ No edit summary

17 September 2012

• curprev 20:3820:38, 17 September 2012‎ Zzo38 talk contribs‎ 18,039 bytes +96‎ No edit summary
• curprev 20:3720:37, 17 September 2012‎ Zzo38 talk contribs‎ 17,943 bytes +1,224‎ No edit summary

15 September 2012

• curprev 23:1223:12, 15 September 2012‎ Rainwarrior talk contribs‎ 16,719 bytes +133‎ →‎Caveats: vector table

2 September 2012

• curprev 05:2205:22, 2 September 2012‎ Rainwarrior talk contribs‎ 16,586 bytes +380‎ →‎Caveats: shouldn't init stack manually

26 August 2012

• curprev 17:4617:46, 26 August 2012‎ Rainwarrior talk contribs‎ 16,206 bytes +70‎ →‎See also: linking NSF player list on emulation libraries page

17 August 2012

• curprev 20:0720:07, 17 August 2012‎ Rainwarrior talk contribs‎ 16,136 bytes +325‎ →‎FDS Bankswitching
• curprev 19:3419:34, 17 August 2012‎ Rainwarrior talk contribs‎ 15,811 bytes +187‎ →‎Loading a tune into RAM: note about LOAD < $8000
• curprev 10:5410:54, 17 August 2012‎ Rainwarrior talk contribs‎ 15,624 bytes +158‎ →‎FDS Bankswitching: clarifying state of players/emulators
• curprev 00:3300:33, 17 August 2012‎ Rainwarrior talk contribs‎ 15,466 bytes +155‎ →‎FDS Bankswitching: note on mirrored writes

16 August 2012

• curprev 18:5718:57, 16 August 2012‎ Rainwarrior talk contribs‎ 15,311 bytes +188‎ →‎FDS Bankswitching: write persistence between songs
• curprev 18:5318:53, 16 August 2012‎ Rainwarrior talk contribs‎ m 15,123 bytes +3‎ →‎FDS Bankswitching: grammar
• curprev 18:5218:52, 16 August 2012‎ Rainwarrior talk contribs‎ 15,120 bytes +577‎ →‎Bank Switching: clarification of FDS RAM vs bankswitching

26 May 2012

• curprev 20:0620:06, 26 May 2012‎ Rainwarrior talk contribs‎ m 14,543 bytes +45‎ Audio category

15 April 2012

• curprev 06:0006:00, 15 April 2012‎ Rainwarrior talk contribs‎ m 14,498 bytes −4‎ →‎Caveats: this "not" shouldn't be here

1 April 2012

• curprev 23:4123:41, 1 April 2012‎ Rainwarrior talk contribs‎ 14,502 bytes −147‎ another revision of $4017 use guidelines
• curprev 22:0922:09, 1 April 2012‎ Rainwarrior talk contribs‎ 14,649 bytes +121‎ rephrasing $4017 caveats to be about player support
• curprev 21:5021:50, 1 April 2012‎ Rainwarrior talk contribs‎ 14,528 bytes +335‎ FDS bankswitching is different, explaining it in bankswitching section.
• curprev 20:3320:33, 1 April 2012‎ Rainwarrior talk contribs‎ m 14,193 bytes +26‎ →‎Sound Chip Support: dollar$ for register$
• curprev 19:4919:49, 1 April 2012‎ Rainwarrior talk contribs‎ m 14,167 bytes +8‎ consistency $ vs 0-h
• curprev 19:4419:44, 1 April 2012‎ Rainwarrior talk contribs‎ 14,159 bytes +766‎ →‎Sound Chip Support: multi chip tunes
• curprev 19:2019:20, 1 April 2012‎ Rainwarrior talk contribs‎ 13,393 bytes +159‎ →‎Initializing a tune: don't think we should write $4017 here, hardware players may need to enable it, and if not using its interrupt it's best not to interfere with the $4017 timing
• curprev 13:2413:24, 1 April 2012‎ Tepples talk contribs‎ 13,234 bytes +199‎ →‎Initializing a tune: $4017 suggestion
• curprev 12:5012:50, 1 April 2012‎ Tepples talk contribs‎ 13,035 bytes +424‎ →‎Multi-chip tunes: FDS write protection; some details not yet clear
• curprev 08:5208:52, 1 April 2012‎ Rainwarrior talk contribs‎ m 12,611 bytes −11‎ bold sticks out too much, using italic
• curprev 08:5008:50, 1 April 2012‎ Rainwarrior talk contribs‎ m 12,622 bytes +55‎ →‎Caveats: edit for style
• curprev 08:4008:40, 1 April 2012‎ Rainwarrior talk contribs‎ 12,567 bytes +577‎ →‎Playing a tune: edit for style consistency, some clarifying notes
• curprev 08:1608:16, 1 April 2012‎ Rainwarrior talk contribs‎ m 11,990 bytes +139‎ edit lead to explain what this is
• curprev 08:1208:12, 1 April 2012‎ Rainwarrior talk contribs‎ m 11,851 bytes −25‎ →‎Header Overview: style consistency
• curprev 08:0708:07, 1 April 2012‎ Rainwarrior talk contribs‎ 11,876 bytes +498‎ →‎Initializing a tune: cleanup
• curprev 07:4507:45, 1 April 2012‎ Rainwarrior talk contribs‎ 11,378 bytes +26‎ →‎Loading a tune into RAM: rewriting bankswitch section for clarity
• curprev 01:5801:58, 1 April 2012‎ Tepples talk contribs‎ 11,352 bytes +393‎ →‎Sound Chip Support: Multi-chip tunes
• curprev 01:4401:44, 1 April 2012‎ Tepples talk contribs‎ 10,959 bytes −80‎ What's the point of the "properly" sections?
• curprev 01:3401:34, 1 April 2012‎ Tepples talk contribs‎ 11,039 bytes +98‎ →‎Properly Initializing a Tune: Simplify description because writing $00 and $10 to that port do the same thing
• curprev 01:0401:04, 1 April 2012‎ Rainwarrior talk contribs‎ m 10,941 bytes +117‎ revising what I meant about it being better not to assume $4015 is initialized

31 March 2012

• curprev 13:1613:16, 31 March 2012‎ Zepper talk contribs‎ m 10,824 bytes +42‎ →‎APU: 4015:0F is required for proper playback of a few tunes. http://nesdev.parodius.com/bbs/viewtopic.php?t=4721

30 March 2012

• curprev 20:2820:28, 30 March 2012‎ Rainwarrior talk contribs‎ m 10,782 bytes 0‎ →‎Playing a tune: Hz for 16666 has an inccorect digit.
• curprev 15:3215:32, 30 March 2012‎ Tepples talk contribs‎ 10,782 bytes +204‎ some markup fixes, and use 6502 hexadecimal notation conventions
• curprev 03:3803:38, 30 March 2012‎ Tepples talk contribs‎ 10,578 bytes +135‎ →‎Playing a tune: 411ah 4kbar

29 March 2012

• curprev 17:5117:51, 29 March 2012‎ Rainwarrior talk contribs‎ m 10,443 bytes +11‎ →‎APU: 4015 also has an unsupported interrupt
• curprev 17:3717:37, 29 March 2012‎ Rainwarrior talk contribs‎ m 10,432 bytes +34‎ →‎APU: linking APU
• curprev 17:3617:36, 29 March 2012‎ Rainwarrior talk contribs‎ m 10,398 bytes +53‎ →‎APU: note about 4015 reset
• curprev 17:0917:09, 29 March 2012‎ Rainwarrior talk contribs‎ m 10,345 bytes 0‎ →‎Properly Initializing a Tune: 4015 volume register -> status register
• curprev 17:0117:01, 29 March 2012‎ Rainwarrior talk contribs‎ 10,345 bytes −111‎ →‎APU: apparently setup of 4015 is part of the spec
• curprev 16:5516:55, 29 March 2012‎ Rainwarrior talk contribs‎ m 10,456 bytes +2‎ →‎APU: formatting error
• curprev 16:5516:55, 29 March 2012‎ Rainwarrior talk contribs‎ 10,454 bytes +276‎ →‎Sound Chip Support: note on enable bits at reset, 4017

17 April 2011

• curprev 17:5517:55, 17 April 2011‎ Tepples talk contribs‎ 10,178 bytes +19‎ →‎Header Overview: linked to descriptions of mapper sound

25 February 2011

• curprev 22:0122:01, 25 February 2011‎ Zepper talk contribs‎ m 10,159 bytes −14‎ No edit summary
• curprev 21:5821:58, 25 February 2011‎ Zepper talk contribs‎ m 10,173 bytes −3‎ meh
• curprev 07:0307:03, 25 February 2011‎ NickMass talk contribs‎ m 10,176 bytes −1‎ Extremely small readability change

16 December 2010

• curprev 01:4101:41, 16 December 2010‎ Tepples talk contribs‎ 10,177 bytes +35‎ →‎Sunsoft FME-07 Sound: It's not really the FME-7 either

24 June 2010

• curprev 23:2223:22, 24 June 2010‎ Lidnariq talk contribs‎ m 10,142 bytes +8‎ spelling correction rampage!

4 January 2010

• curprev 17:2317:23, 4 January 2010‎ Tepples talk contribs‎ 10,134 bytes +49‎ →‎Caveats: we need to start a list on the wiki because the one on nesdev.com hasn't been updated in years

12 June 2009

• curprev 15:3415:34, 12 June 2009‎ Banshaku talk contribs‎ m 10,085 bytes +10,085‎ Created page with 'The basic idea is one rips the music/sound code from an NES game and prepends a small header to the data. A program of some form (6502/sound emulator) then takes the data and lo...'