NES 2.0: Revision history

23 March 2024

• curprev 08:3108:31, 23 March 2024‎ NewRisingSun talk contribs‎ 24,712 bytes +35‎ Another Plug-and-Play thing

8 March 2024

• curprev 16:2316:23, 8 March 2024‎ Fiskbit talk contribs‎ m 24,677 bytes +3‎ →‎Default Expansion Device: Adds Famicom Network Controller link. Updates SNES mouse link to dedicated SNES mouse page.
• curprev 14:0414:04, 8 March 2024‎ NewRisingSun talk contribs‎ m 24,674 bytes 0‎ Excalibor->Excalibur
• curprev 13:4813:48, 8 March 2024‎ NewRisingSun talk contribs‎ 24,674 bytes +69‎ Two new expansion devices.

2 February 2024

• curprev 18:1918:19, 2 February 2024‎ NewRisingSun talk contribs‎ 24,605 bytes −621‎ Make the article normative again by removing pre-NES-2.0 historical bit use description that is already denoted on the INES as well as the individual mapper pages.

1 February 2024

• curprev 09:5909:59, 1 February 2024‎ Lidnariq talk contribs‎ 25,226 bytes +48‎ bit does not indicate 4-screens

10 December 2023

• curprev 23:5223:52, 10 December 2023‎ Fiskbit talk contribs‎ m 25,178 bytes 0‎ Reverses the order of Dn..Dm bits in the documentation to be high to low, matching the endianness we use within the bytes themselves. This addresses confusion about whether the data was stored in reverse.

26 June 2023

• curprev 10:0910:09, 26 June 2023‎ NewRisingSun talk contribs‎ 25,178 bytes +108‎ Add three new expansion devices

10 April 2023

• curprev 21:2321:23, 10 April 2023‎ Rainwarrior talk contribs‎ m 25,070 bytes −40‎ →‎Hard-Wired Mirroring: retracting mapper UxROM (no 4-screen release yet)

7 April 2023

• curprev 18:2118:21, 7 April 2023‎ Rainwarrior talk contribs‎ 25,110 bytes +581‎ →‎Hard-Wired Mirroring: revising explanation, try also to give brief summary of the cases rather than just links to mapper numbers
• curprev 17:5217:52, 7 April 2023‎ Rainwarrior talk contribs‎ m 24,529 bytes +48‎ →‎Header: give alternate mirroring term, as with iNES

22 March 2023

• curprev 18:0418:04, 22 March 2023‎ NewRisingSun talk contribs‎ 24,481 bytes +190‎ Add three expansion devices

13 February 2023

• curprev 08:4208:42, 13 February 2023‎ Fiskbit talk contribs‎ 24,291 bytes −11‎ For CPU/PPU timing, the listed chip should be the UA6538 PPU, not the UA6527P CPU. Thanks to Eugene.S for identifying this.

21 December 2022

• curprev 03:3203:32, 21 December 2022‎ Jroweboy talk contribs‎ 24,302 bytes +89‎ Add link to the cc65 port of nes2.0 header generator

27 November 2022

• curprev 16:5016:50, 27 November 2022‎ NewRisingSun talk contribs‎ 24,213 bytes +428‎ Explain the difference between $20 and $23
• curprev 16:4016:40, 27 November 2022‎ NewRisingSun talk contribs‎ 23,785 bytes +468‎ Add explanation on what value $11 means from a recent Discord discussion.

10 November 2022

• curprev 10:1710:17, 10 November 2022‎ NewRisingSun talk contribs‎ 23,317 bytes +293‎ Note that device 3 refers to the "simple" famicom 4p protocol

5 November 2022

• curprev 00:2800:28, 5 November 2022‎ Rainwarrior talk contribs‎ 23,024 bytes +90‎ →‎See Also: link submappers
• curprev 00:2500:25, 5 November 2022‎ Rainwarrior talk contribs‎ 22,934 bytes +29‎ →‎CPU/PPU Timing: multiple option in table

30 October 2022

• curprev 22:4122:41, 30 October 2022‎ Rainwarrior talk contribs‎ m 22,905 bytes 0‎ →‎Default Expansion Device: fix link
• curprev 18:5518:55, 30 October 2022‎ Rainwarrior talk contribs‎ 22,905 bytes 0‎ →‎Default Expansion Device: fix formatting
• curprev 18:5518:55, 30 October 2022‎ Rainwarrior talk contribs‎ 22,905 bytes +96‎ →‎Default Expansion Device: link to fix for PowerPak
• curprev 18:1318:13, 30 October 2022‎ Rainwarrior talk contribs‎ 22,809 bytes +668‎ adding a version history so we can understand what features were added when
• curprev 16:1116:11, 30 October 2022‎ Rainwarrior talk contribs‎ 22,141 bytes +124‎ →‎Default Expansion Device: document that PowerPak doesn't like this byte :S

6 October 2022

• curprev 04:0104:01, 6 October 2022‎ Rainwarrior talk contribs‎ m 22,017 bytes +71‎ See Also: NES 2.0 header for ca65

28 August 2022

• curprev 13:2313:23, 28 August 2022‎ NewRisingSun talk contribs‎ m 21,946 bytes +4‎ No edit summary
• curprev 13:2213:22, 28 August 2022‎ NewRisingSun talk contribs‎ 21,942 bytes +162‎ Add mappers 561's and 562's Misc. ROM usage
• curprev 10:3110:31, 28 August 2022‎ NewRisingSun talk contribs‎ 21,780 bytes +324‎ Rename input devices $04 and $05, unassign device $06.

7 July 2022

• curprev 22:0722:07, 7 July 2022‎ Fiskbit talk contribs‎ m 21,456 bytes +4‎ →‎Extended Console Type: Changes Famicom Network System to a link.

6 July 2022

• curprev 10:2610:26, 6 July 2022‎ Fiskbit talk contribs‎ 21,452 bytes +32‎ →‎Extended Console Type: Adds Famicom Network System as a console type for FCNS software cartridges. FCNS ROMs should specify no CHR.

28 June 2022

• curprev 20:1220:12, 28 June 2022‎ Quietust talk contribs‎ m 21,420 bytes +158‎ →‎Hard-Wired Mirroring

23 May 2022

• curprev 21:0521:05, 23 May 2022‎ NewRisingSun talk contribs‎ 21,262 bytes +58‎ Better description for EPSM
• curprev 21:0521:05, 23 May 2022‎ NewRisingSun talk contribs‎ 21,204 bytes −36‎ Replace unused extended console type 4 with EPSM

2 March 2022

• curprev 12:3912:39, 2 March 2022‎ NewRisingSun talk contribs‎ 21,240 bytes −30‎ There are several "Bit Corp. Creator" models, not all of which have decimal mode; so remove the example completely.

17 December 2021

• curprev 22:1722:17, 17 December 2021‎ NewRisingSun talk contribs‎ 21,270 bytes +145‎ Link XML database, change links to https

6 January 2021

• curprev 14:5514:55, 6 January 2021‎ NewRisingSun talk contribs‎ 21,125 bytes +95‎ $32-$34

15 December 2020

• curprev 21:1021:10, 15 December 2020‎ NewRisingSun talk contribs‎ m 21,030 bytes −1‎ →‎Miscellaneous ROM Area
• curprev 10:5810:58, 15 December 2020‎ NewRisingSun talk contribs‎ 21,031 bytes +90‎ VT369 embedded sound ROM

23 October 2020

• curprev 19:5019:50, 23 October 2020‎ LightStruk talk contribs‎ m 20,941 bytes +20‎ Link to SNES controller page in Expansion device section
• curprev 19:4019:40, 23 October 2020‎ LightStruk talk contribs‎ m 20,921 bytes +18‎ Link to Miracle Piano page from Expansion Device section

20 October 2020

• curprev 16:5316:53, 20 October 2020‎ NewRisingSun talk contribs‎ 20,903 bytes +65‎ Majesco (MSI)'s licensed plug-and-play release of Mega Man II uses a protection in the form of swapped controller input.

26 September 2020

• curprev 17:4117:41, 26 September 2020‎ NewRisingSun talk contribs‎ 20,838 bytes +37‎ The Sharp C1's Cassette Interface, used by its built-in software, uses different register bits than the Famicom Data Recorder.

23 September 2020

• curprev 18:5918:59, 23 September 2020‎ Rainwarrior talk contribs‎ 20,801 bytes −23‎ clarify that backward compatibility isn't broken by "use" but rather if the ROM does "require" iNES 2 features

20 April 2020

• curprev 06:1806:18, 20 April 2020‎ NewRisingSun talk contribs‎ m 20,824 bytes 0‎ →‎CHR-ROM Area
• curprev 06:1806:18, 20 April 2020‎ NewRisingSun talk contribs‎ m 20,824 bytes +1‎ →‎CHR-ROM Area
• curprev 05:4705:47, 20 April 2020‎ Great Hierophant talk contribs‎ 20,823 bytes +46‎ →‎Default Expansion Device
• curprev 05:4105:41, 20 April 2020‎ Great Hierophant talk contribs‎ 20,777 bytes +26‎ →‎Default Expansion Device
• curprev 05:3905:39, 20 April 2020‎ Great Hierophant talk contribs‎ 20,751 bytes +226‎ →‎Default Expansion Device

6 February 2020

• curprev 16:5616:56, 6 February 2020‎ NewRisingSun talk contribs‎ 20,525 bytes +53‎ Added "UMC UM6578 enhanced famiclone" console type and "City Patrolman Lightgun" expansion device.

7 November 2019

• curprev 17:5817:58, 7 November 2019‎ NewRisingSun talk contribs‎ 20,472 bytes +68‎ Add note about self-flashable PRG-ROM

17 March 2019

• curprev 16:3916:39, 17 March 2019‎ Rainwarrior talk contribs‎ m 20,404 bytes −1‎ →‎File Structure: replacing "SHL" with <<, think we should avoid a dependency on x86 mnemonics

5 February 2019

• curprev 21:1321:13, 5 February 2019‎ Lidnariq talk contribs‎ m 20,405 bytes 0‎ →‎Header: typo
• curprev 21:1221:12, 5 February 2019‎ Lidnariq talk contribs‎ m 20,405 bytes +7‎ →‎Header: typo

25 January 2019

• curprev 21:1021:10, 25 January 2019‎ NewRisingSun talk contribs‎ 20,398 bytes +21‎ →‎Hard-Wired Mirroring
• curprev 21:0821:08, 25 January 2019‎ NewRisingSun talk contribs‎ 20,377 bytes +312‎ →‎Hard-Wired Mirroring

19 January 2019

• curprev 20:2020:20, 19 January 2019‎ NewRisingSun talk contribs‎ 20,065 bytes +25‎ Add Stack-up per discussion on http://forums.nesdev.com/viewtopic.php?f=3&t=17213&start=180#p232154

16 January 2019

• curprev 09:2809:28, 16 January 2019‎ NewRisingSun talk contribs‎ 20,040 bytes +28‎ I had totally forgotten about Mapper 262.

15 January 2019

• curprev 21:3721:37, 15 January 2019‎ NewRisingSun talk contribs‎ 20,012 bytes −3‎ Not "preferred". "preferred" is subjective, "default" is objective.
• curprev 21:2121:21, 15 January 2019‎ Rainwarrior talk contribs‎ 20,015 bytes −230‎ →‎Default Expansion Device: Why does 2 zappers have a special fallback? Emulators won't be able to provide various peripherals, how they fall back can only be decided by the emulator author by their specific circumstance.
• curprev 21:1721:17, 15 January 2019‎ Rainwarrior talk contribs‎ 20,245 bytes −10‎ →‎Default Expansion Device: don't like the prescription of "should" here, maybe obviate this wording by focusing on what ability this information provides?
• curprev 13:5813:58, 15 January 2019‎ NewRisingSun talk contribs‎ m 20,255 bytes +1‎ →‎CHR-(NV)RAM
• curprev 13:4913:49, 15 January 2019‎ NewRisingSun talk contribs‎ 20,254 bytes +476‎ Clarify MMC5 EXRAM and that hard-wired 4-screen VRAM is not CHR-RAM; slightly paraphrase expansion device 0

14 January 2019

• curprev 23:5123:51, 14 January 2019‎ NewRisingSun talk contribs‎ m 19,778 bytes 0‎ →‎PRG-ROM Area
• curprev 23:3323:33, 14 January 2019‎ Rainwarrior talk contribs‎ 19,778 bytes +19‎ →‎Default Expansion Device: clarify port for Zapper and SNES Mouse
• curprev 22:5222:52, 14 January 2019‎ Rainwarrior talk contribs‎ 19,759 bytes −181‎ →‎Default Expansion Device: NewRisingSun requested that I remove the "tentative" qualification now

13 January 2019

• curprev 05:4805:48, 13 January 2019‎ Rainwarrior talk contribs‎ 19,940 bytes +59‎ slight revision of lead: add mention of avoiding checksums, new mappers. (avoiding CRCs was very prominent in Kevtris' original stated goals, and was very often repeated by others, deserves mention here)

12 January 2019

• curprev 23:4523:45, 12 January 2019‎ Rainwarrior talk contribs‎ 19,881 bytes −17‎ this article and iNES need to refer to each other, header numbering and field names should use the same convention in both
• curprev 21:2921:29, 12 January 2019‎ Rainwarrior talk contribs‎ 19,898 bytes +4,118‎ restoring tentative compromise for byte 15 ($00 now backward compatible, $01 now standard controllers, mic removed)

11 January 2019

• curprev 21:1421:14, 11 January 2019‎ NewRisingSun talk contribs‎ 15,780 bytes −3,803‎ rm expansion device field
• curprev 21:0721:07, 11 January 2019‎ Rainwarrior talk contribs‎ m 19,583 bytes −60‎ →‎Default Expansion Device
• curprev 21:0621:06, 11 January 2019‎ Rainwarrior talk contribs‎ 19,643 bytes −42‎ →‎Default Expansion Device: reverting this to backward compatible "No information", currently in dispute

10 January 2019

• curprev 21:1021:10, 10 January 2019‎ NewRisingSun talk contribs‎ 19,685 bytes −16‎ Okay, but then it's not mirrored once, either.
• curprev 21:0221:02, 10 January 2019‎ Lidnariq talk contribs‎ 19,701 bytes −15‎ →‎Hard-Wired Mirroring: Don't directly contradict what we wrote in the first point with what we write in the second bullet. Mapper 77 doesn't map anything at all to PPU addresses $3000-$3FFF.
• curprev 20:5620:56, 10 January 2019‎ NewRisingSun talk contribs‎ 19,716 bytes +174‎ There are multiple-region games that do not (need to) adjust themselves.
• curprev 20:1820:18, 10 January 2019‎ NewRisingSun talk contribs‎ m 19,542 bytes +3‎ →‎Hard-Wired Mirroring
• curprev 20:0220:02, 10 January 2019‎ NewRisingSun talk contribs‎ 19,539 bytes +540‎ Update mirroring information based on [http://forums.nesdev.com/viewtopic.php?f=3&t=14725 discussion]

4 January 2019

• curprev 03:3503:35, 4 January 2019‎ NewRisingSun talk contribs‎ 18,999 bytes +16‎ Added U-Force

2 January 2019

• curprev 17:5817:58, 2 January 2019‎ NewRisingSun talk contribs‎ m 18,983 bytes +5‎ →‎Default Expansion Device
• curprev 17:5617:56, 2 January 2019‎ NewRisingSun talk contribs‎ 18,978 bytes +2,277‎ rewrite and additions

20 November 2018

• curprev 05:5105:51, 20 November 2018‎ Koitsu talk contribs‎ 16,701 bytes +34‎ No edit summary

8 August 2018

• curprev 06:2406:24, 8 August 2018‎ Rainwarrior talk contribs‎ 16,667 bytes −69‎ →‎Byte 10 (RAM size): I had described the internal RAM cases sort of as if they were optional, not sure if that was appropriate
• curprev 06:0606:06, 8 August 2018‎ Rainwarrior talk contribs‎ 16,736 bytes +63‎ →‎Byte 10 (RAM size): 157 is different, not sure exactly what to say about it here
• curprev 06:0406:04, 8 August 2018‎ Rainwarrior talk contribs‎ 16,673 bytes +204‎ →‎Byte 10 (RAM size): maybe note that this isn't ''quite'' a save file size field.
• curprev 05:4405:44, 8 August 2018‎ Rainwarrior talk contribs‎ 16,469 bytes +1,371‎ →‎Byte 10 (RAM size): trying to separate the majority case to make it clear that this field only unambiguously applies to $6000 and everything else is special. Not sure if I've listed all the relevant mappers, but I think this gets most or all cases?
• curprev 04:2404:24, 8 August 2018‎ Rainwarrior talk contribs‎ 15,098 bytes −74‎ →‎Overview: the lead already credits KH and links to his original proposal, but he is not really the writer of this living document at this point? (special thanks are also relegated to that original document)

7 August 2018

• curprev 20:1020:10, 7 August 2018‎ Rainwarrior talk contribs‎ 15,172 bytes −522‎ removing more stories about Kevin that don't really help the spec
• curprev 20:0720:07, 7 August 2018‎ Rainwarrior talk contribs‎ 15,694 bytes −152‎ →‎Byte 11 (Video RAM Size): this anecdote doesn't really help understand the spec
• curprev 20:0220:02, 7 August 2018‎ Rainwarrior talk contribs‎ 15,846 bytes −149‎ →‎Byte 10 (RAM size): N163: rereading this guideline it is underspecified and confusing, rewriting with tentative guideline from: [http://forums.nesdev.com/viewtopic.php?p=222948#p222948]
• curprev 19:4419:44, 7 August 2018‎ Rainwarrior talk contribs‎ 15,995 bytes +89‎ →‎Byte 10 (RAM size): grouping the weird stuff into a list of special cases
• curprev 19:2919:29, 7 August 2018‎ Rainwarrior talk contribs‎ 15,906 bytes +30‎ →‎Byte 10 (RAM size): making the table horizontal instead so that the clarifying notes can appear together (remove redundant self flashing note)

5 November 2017

• curprev 22:5822:58, 5 November 2017‎ Tepples talk contribs‎ 15,876 bytes +169‎ →‎Byte 10 (RAM size): Kev clarified what to do for self-flash mappers
• curprev 22:4422:44, 5 November 2017‎ Tepples talk contribs‎ 15,707 bytes +257‎ →‎Byte 10 (RAM size): Kev clarified what to do for the 8320 bytes you get when you add 8K of RAM to an N163

6 September 2017

• curprev 22:1122:11, 6 September 2017‎ B00daW talk contribs‎ 15,450 bytes +10‎ →‎Byte 14 (Misc. ROMs)
• curprev 22:1022:10, 6 September 2017‎ B00daW talk contribs‎ 15,440 bytes +7‎ No edit summary
• curprev 22:1022:10, 6 September 2017‎ B00daW talk contribs‎ 15,433 bytes +302‎ Added information regarding Byte 14.

30 August 2017

• curprev 23:4823:48, 30 August 2017‎ Rainwarrior talk contribs‎ m 15,131 bytes −18‎ →‎Byte 10 (RAM size): removing "serial" qualification
• curprev 23:2623:26, 30 August 2017‎ Rainwarrior talk contribs‎ 15,149 bytes −675‎ →‎Byte 10 (RAM size): trying to reorganize the information here, most important stuff first, trying to prune unnecessary "clutter" info.

29 August 2017

• curprev 09:3409:34, 29 August 2017‎ Rainwarrior talk contribs‎ 15,824 bytes 0‎ →‎Byte 10 (RAM size): trying to reword the $6000-7FFF common case paragraph

28 August 2017

• curprev 18:4918:49, 28 August 2017‎ Bregalad talk contribs‎ 15,824 bytes +38‎ →‎Byte 10 (RAM size): Some rewording

4 August 2016

• curprev 04:4604:46, 4 August 2016‎ Lidnariq talk contribs‎ m 15,786 bytes +32‎ →‎Vs. Unisystem: add recommended inter-page link