MMC3: Revision history

10 January 2024

• curprev 08:1008:10, 10 January 2024‎ TakuikaNinja talk contribs‎ m 20,364 bytes +3‎ Minor grammar correction.

26 February 2023

• curprev 00:4500:45, 26 February 2023‎ Tepples talk contribs‎ 20,361 bytes −144‎ consensus on Discord is that old/new behavior appears to be more correlated with NEC/Sharp than revision or date

22 February 2023

• curprev 23:2323:23, 22 February 2023‎ Rainwarrior talk contribs‎ 20,505 bytes +233‎ →‎iNES Mapper 004 and MMC6: list both known examples of oversize romhacks, explain that both of them have alternatives

18 January 2023

• curprev 18:5418:54, 18 January 2023‎ Rainwarrior talk contribs‎ 20,272 bytes +67‎ →‎Pirate variants: explain that mapper 249 has a bank order difference
• curprev 17:5517:55, 18 January 2023‎ Rainwarrior talk contribs‎ m 20,205 bytes 0‎ →‎Pirate variants: lowercase easier to read
• curprev 17:5517:55, 18 January 2023‎ Rainwarrior talk contribs‎ m 20,205 bytes +11‎ →‎Pirate variants: submapper 5, not 4
• curprev 17:5317:53, 18 January 2023‎ Rainwarrior talk contribs‎ 20,194 bytes +377‎ →‎Pirate variants: document the added submapper 4

14 November 2022

• curprev 03:3603:36, 14 November 2022‎ Rainwarrior talk contribs‎ 19,817 bytes +207‎ →‎IRQ Specifics: explain workaround for $C001 unreliability

5 November 2022

• curprev 01:5001:50, 5 November 2022‎ Rainwarrior talk contribs‎ 19,610 bytes +203‎ →‎IRQ Specifics: explain the Wario's Woods statement

2 July 2022

• curprev 07:5507:55, 2 July 2022‎ Egor talk contribs‎ 19,407 bytes +32‎ →‎IRQ reload ($C001-$DFFF, odd): add info on IRQ counter being cleared (this is mentioned in the IRQ Specifics section)

21 February 2022

• curprev 18:1718:17, 21 February 2022‎ Lidnariq talk contribs‎ 19,375 bytes +283‎ →‎IRQ Specifics: insert caveats about reverse pattern tables

27 June 2021

• curprev 14:4614:46, 27 June 2021‎ Tepples talk contribs‎ 19,092 bytes +18‎ →‎See also: add <references />
• curprev 14:4514:45, 27 June 2021‎ Tepples talk contribs‎ 19,074 bytes +214‎ →‎IRQ Specifics: Three falling edges, with schematic citation provided by Trirosmos

5 December 2020

• curprev 13:5613:56, 5 December 2020‎ Tepples talk contribs‎ 18,860 bytes +516‎ →‎IRQ Specifics: Bug with $C001 writes on consecutive lines

9 November 2020

• curprev 12:5912:59, 9 November 2020‎ Quietust talk contribs‎ m 18,344 bytes −5‎ No edit summary

6 November 2020

• curprev 06:0706:07, 6 November 2020‎ Tepples talk contribs‎ 18,349 bytes +8‎ →‎IRQ Specifics: Ventriloquism for Dummies

3 September 2020

• curprev 04:4304:43, 3 September 2020‎ Ben Boldt talk contribs‎ 18,341 bytes +12‎ →‎CHR Banks: Similar to recent modification by Tepples, but this one for the CHR mapping table.

15 August 2020

• curprev 19:2519:25, 15 August 2020‎ Infiniteneslives talk contribs‎ m 18,329 bytes +1‎ →‎IRQ Specifics: I've performed testing of original MMC3 with the INLretro to prove to myself that the MMC3 digital filter is sensitive to falling edges of M2 (end of CPU cycle), not the positive edge (mid CPU cycle).

30 June 2020

• curprev 12:2912:29, 30 June 2020‎ Tepples talk contribs‎ 18,328 bytes +2‎ →‎PRG Banks: Reader was taking ">" too literally as "is greater than" rather than an arrow
• curprev 11:5311:53, 30 June 2020‎ Tepples talk contribs‎ m 18,326 bytes +6‎ →‎PRG Banks: Clearer about bit 6 of $8000, not of R6 or R7
• curprev 11:4511:45, 30 June 2020‎ Tepples talk contribs‎ 18,320 bytes +203‎ →‎PRG Banks: Discord users claim that "$8000 & $40" wording isn't any clearer than bit 6

5 December 2019

• curprev 16:2016:20, 5 December 2019‎ Ben Boldt talk contribs‎ m 18,117 bytes +3‎ →‎Bank select ($8000-$9FFE, even): Minor Clarification

6 November 2019

• curprev 02:5502:55, 6 November 2019‎ Rainwarrior talk contribs‎ 18,114 bytes −153‎ →‎Nintendo MMC3 chip variants: don't speculate about lot checks

25 October 2019

• curprev 16:4616:46, 25 October 2019‎ NewRisingSun talk contribs‎ m 18,267 bytes −9‎ fix link

24 October 2019

• curprev 21:2221:22, 24 October 2019‎ Lidnariq talk contribs‎ 18,276 bytes +125‎ →‎IRQ Specifics: incorporate Krikzz's findings about the MC-ACC. Replace "PPU A12" with "filtered A12" to emphasize that it's not the raw PPU A12 signal. Unicode arrows.

21 January 2019

• curprev 18:2918:29, 21 January 2019‎ Ben Boldt talk contribs‎ 18,151 bytes +20‎ Added infobox pinout link

14 October 2018

• curprev 05:5705:57, 14 October 2018‎ NovaSquirrel talk contribs‎ 18,131 bytes +129‎ →‎Bank data ($8001-$9FFF, odd)

21 September 2018

• curprev 07:0807:08, 21 September 2018‎ Bregalad talk contribs‎ m 18,002 bytes +11‎ PRG-RAM is optional

4 September 2018

• curprev 03:3203:32, 4 September 2018‎ Rainwarrior talk contribs‎ 17,991 bytes −40‎ →‎Bank data ($8001-$9FFF, odd): replacing registers 6 & 7 for consistency with R6/R7 used elsewhere
• curprev 03:2903:29, 4 September 2018‎ Rainwarrior talk contribs‎ 18,031 bytes −47‎ →‎PRG Banks: penultimate -> second last (probably clearer terminology for those with less complete english), removing "properly 63rd" as "last bank" is already crystal clear and 63 doesn't apply to all sizes
• curprev 03:2803:28, 4 September 2018‎ Rainwarrior talk contribs‎ 18,078 bytes −153‎ →‎Registers: removing # (borrowed from assembly immediate concept?), removing redundant statement that conflate "writes" with bank function, replacing "6 and 7" with "top 2 bits" to prevent adjacent confusion with "registers 6 and 7".
• curprev 03:2403:24, 4 September 2018‎ Rainwarrior talk contribs‎ 18,231 bytes +86‎ →‎CHR Banks: using 2-row cells for 2K banks, mentioning that it's even banks only
• curprev 03:2103:21, 4 September 2018‎ Rainwarrior talk contribs‎ 18,145 bytes +54‎ →‎Bank select ($8000-$9FFE, even): clarifying meaning of R0-R7

8 August 2018

• curprev 05:5805:58, 8 August 2018‎ Rainwarrior talk contribs‎ 18,091 bytes +31‎ →‎iNES Mapper 004 and MMC6: should mention submapper assignment

23 July 2018

• curprev 22:4622:46, 23 July 2018‎ Rainwarrior talk contribs‎ 18,060 bytes −541‎ →‎Bank data ($8001-$9FFF, odd): removing stuff about 16k bank copiers (i think this is very confusing and unnecessary), grouping two notes about prog bits together

10 May 2018

• curprev 05:2005:20, 10 May 2018‎ Furrykef talk contribs‎ m 18,601 bytes +1‎ comma

11 March 2018

• curprev 04:1504:15, 11 March 2018‎ NewRisingSun talk contribs‎ m 18,600 bytes +44‎ Category:NES 2.0 mappers with submappers

26 September 2017

• curprev 14:5414:54, 26 September 2017‎ Bregalad talk contribs‎ 18,556 bytes +29‎ Avoid using 2nd person - do not assume the reader is an emulator author for instance ("your emulator").

25 September 2017

• curprev 03:5003:50, 25 September 2017‎ Lidnariq talk contribs‎ 18,527 bytes +285‎ →‎IRQ Specifics: try to make this clearer

24 September 2017

• curprev 23:5123:51, 24 September 2017‎ Tepples talk contribs‎ 18,242 bytes +98‎ →‎IRQ Specifics: My guess as to what Zepper meant by "260,268,276..." in revision 12181

27 August 2017

• curprev 07:5307:53, 27 August 2017‎ Rainwarrior talk contribs‎ 18,144 bytes +4‎ →‎PRG RAM protect ($A001-$BFFF, odd): open bus

13 April 2017

• curprev 06:5906:59, 13 April 2017‎ Bregalad talk contribs‎ m 18,140 bytes +2‎ Pirate variants becomes a subcathegory of "Variants"
• curprev 06:5806:58, 13 April 2017‎ Bregalad talk contribs‎ 18,138 bytes +99‎ →‎Variants: Added subcategories for various "variants".
• curprev 06:5406:54, 13 April 2017‎ Bregalad talk contribs‎ 18,039 bytes −103‎ →‎Mirroring ($A000-$BFFE, even): Not only Rad Racer II / TVROM has MMC3 and 4-screen VRAM (there's also Gauntlet II). It's better to stay generic and don't mention specific games whenever possible IMO.

18 March 2017

• curprev 17:2617:26, 18 March 2017‎ Lidnariq talk contribs‎ 18,142 bytes +21‎ →‎Hardware: Explicitly call out IRQ behavior into its own section to make it obvious. Hardware section now too short, might want to be merged somewhere else in the page

27 April 2016

• curprev 00:1300:13, 27 April 2016‎ Lidnariq talk contribs‎ 18,121 bytes +90‎ →‎Variants: Felix the Cat doesn't imply that the game needs MMC3A IRQs

20 April 2016

• curprev 02:1302:13, 20 April 2016‎ Zepper talk contribs‎ m 18,031 bytes +113‎ More small tweaks.

18 April 2016

• curprev 19:1919:19, 18 April 2016‎ Zepper talk contribs‎ m 17,918 bytes −138‎ →‎Hardware: Time to update the IRQ-hell. Your help now, plz?

18 March 2016

• curprev 00:1300:13, 18 March 2016‎ Tepples talk contribs‎ 18,056 bytes +183‎ →‎Bank select ($8000-$9FFE, even): Caution recommended by Vectrex2809 at http://forums.nesdev.com/viewtopic.php?p=166326#p166326

1 November 2015

• curprev 19:1619:16, 1 November 2015‎ Rainwarrior talk contribs‎ m 17,873 bytes +5‎ →‎PRG RAM protect ($A001-$BFFF, odd): re-inserting the term "chip enable" because I think that term has specific meaning for RAM/ROM chips