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
• curprev 18:4318:43, 1 November 2015‎ Furrykef talk contribs‎ 17,868 bytes +83‎ →‎PRG RAM protect ($A001-$BFFF, odd): explaining what the disable bit actually does

23 September 2015

• curprev 00:5600:56, 23 September 2015‎ Lidnariq talk contribs‎ m 17,785 bytes +13‎ Fine, "deliberate" instead of "explicit". It's very much a conscious choice that has been made.

22 September 2015

• curprev 23:0323:03, 22 September 2015‎ Rainwarrior talk contribs‎ m 17,772 bytes −9‎ →‎Bank data ($8001-$9FFF, odd): I think explicit is the wrong word, here. It implies that it's clearly stated in the emulator documentation, or something to that effect?
• curprev 20:5020:50, 22 September 2015‎ Lidnariq talk contribs‎ 17,781 bytes −93‎ →‎Variants: Not clear what the comment about Gauntlet was doing here, but it definitely didn't belong in the middle of the description of Namco's 108.
• curprev 20:4720:47, 22 September 2015‎ Lidnariq talk contribs‎ 17,874 bytes +107‎ →‎Registers: More explicitly call out MMC6 differences; also refine comment about oversize PRG support

4 August 2015

• curprev 17:2117:21, 4 August 2015‎ Rainwarrior talk contribs‎ 17,767 bytes +139‎ →‎iNES Mapper 004 and MMC6: there is now a patch for Low G Man

17 June 2015

• curprev 00:3400:34, 17 June 2015‎ Lidnariq talk contribs‎ m 17,628 bytes 0‎ typo fix

30 May 2015

• curprev 22:2522:25, 30 May 2015‎ Rainwarrior talk contribs‎ m 17,628 bytes −23‎ →‎iNES Mapper 004 and MMC6: wording
• curprev 21:2121:21, 30 May 2015‎ Rainwarrior talk contribs‎ 17,651 bytes 0‎ revising oversize to explain that this is generally not supported
• curprev 19:2719:27, 30 May 2015‎ Lidnariq talk contribs‎ 17,651 bytes +74‎ make it more clear that 2MiB MMC3 images are non-compliant
• curprev 19:0119:01, 30 May 2015‎ Rainwarrior talk contribs‎ 17,577 bytes +55‎ nesdbbox
• curprev 18:5718:57, 30 May 2015‎ Rainwarrior talk contribs‎ 17,522 bytes −113‎ 206 description should have gone in Variants, not Pirate Variants, moving MMC3-like link to See also
• curprev 18:5318:53, 30 May 2015‎ Rainwarrior talk contribs‎ m 17,635 bytes +1‎ →‎Bank data ($8001-$9FFF, odd): broken internal link
• curprev 18:5218:52, 30 May 2015‎ Rainwarrior talk contribs‎ 17,634 bytes +1,597‎ merging material from iNES Mapper 004
• curprev 18:3018:30, 30 May 2015‎ Rainwarrior talk contribs‎ 16,037 bytes +202‎ adding 118/119 to infobox, note about TR1ROM variant
• curprev 17:5517:55, 30 May 2015‎ Rainwarrior talk contribs‎ 15,835 bytes +656‎ →‎PRG RAM protect ($A001-$BFFF, odd): notes on StarTropics and Low-G Man

18 May 2015

• curprev 17:0417:04, 18 May 2015‎ Lidnariq talk contribs‎ m 15,179 bytes +39‎ add cat:scanlineIRQ

26 April 2015

• curprev 14:1214:12, 26 April 2015‎ Zepper talk contribs‎ m 15,140 bytes +2‎ →‎IRQ reload ($C001-$DFFF, odd)
• curprev 09:0209:02, 26 April 2015‎ Lidnariq talk contribs‎ m 15,138 bytes +2‎ →‎IRQ latch ($C000-$DFFE, even): english puts the ordinal before the word it's modifying, or uses a cardinal numeral
• curprev 01:4601:46, 26 April 2015‎ Zepper talk contribs‎ 15,136 bytes +4‎ →‎IRQ reload ($C001-$DFFF, odd)
• curprev 01:4601:46, 26 April 2015‎ Zepper talk contribs‎ m 15,132 bytes +52‎ →‎IRQ latch ($C000-$DFFE, even)

25 April 2015

• curprev 18:3218:32, 25 April 2015‎ PGCX864 talk contribs‎ 15,080 bytes +9‎ No edit summary
• curprev 09:3909:39, 25 April 2015‎ PGCX864 talk contribs‎ 15,071 bytes +12‎ No edit summary

22 April 2015

• curprev 12:5412:54, 22 April 2015‎ Tepples talk contribs‎ m 15,059 bytes +1‎ Disch != satellite

21 April 2015

• curprev 22:3822:38, 21 April 2015‎ Tepples talk contribs‎ 15,058 bytes +7‎ Overview overhaul
• curprev 21:2521:25, 21 April 2015‎ Rainwarrior talk contribs‎ m 15,051 bytes +38‎ Category:Nintendo licensed mappers
• curprev 10:1010:10, 21 April 2015‎ Bregalad talk contribs‎ 15,013 bytes +134‎ →‎See also: Added linnk to \Firebug\'s doc
• curprev 09:4009:40, 21 April 2015‎ Bregalad talk contribs‎ 14,879 bytes +153‎ Listified the "pirate varients" paragrah, added link to goroh's and to dish's doccuments

10 March 2015

• curprev 17:3617:36, 10 March 2015‎ Tepples talk contribs‎ 14,726 bytes +295‎ →‎Mirroring ($A000-$BFFE, even): iNES clarification per request at http://forums.nesdev.com/viewtopic.php?p=142742#p142742

2 February 2015

• curprev 02:5702:57, 2 February 2015‎ Lidnariq talk contribs‎ 14,431 bytes −12‎ →‎Hardware: low time req now known thanks to Talk:MMC3

8 May 2014

• curprev 00:5600:56, 8 May 2014‎ Lidnariq talk contribs‎ 14,443 bytes +10‎ omit now-redundant link to redirect

21 April 2014

• curprev 16:0716:07, 21 April 2014‎ Thefox talk contribs‎ 14,433 bytes −171‎ →‎Hardware: removed because doesn't say anything about different revisions, nor the source of the information, and CHR-ROM/CHR-RAM makes no difference for MMC3's power-up state

28 January 2014

• curprev 03:2003:20, 28 January 2014‎ Tepples talk contribs‎ m 14,604 bytes +48‎ →‎Variants: check that
• curprev 03:1703:17, 28 January 2014‎ Tepples talk contribs‎ 14,556 bytes +145‎ →‎Variants: Felix needs old?

1 December 2013

• curprev 02:5202:52, 1 December 2013‎ Lidnariq talk contribs‎ 14,411 bytes +775‎ →‎Bank select ($8000-$9FFE, even): add a table explaining the banks, rather than just words

25 August 2013

• curprev 06:3506:35, 25 August 2013‎ Lidnariq talk contribs‎ m 13,636 bytes 0‎ →‎Hardware: typo

24 August 2013

• curprev 21:2921:29, 24 August 2013‎ Lidnariq talk contribs‎ m 13,636 bytes +104‎ →‎Hardware: mention discovered MC-ACC difference

29 March 2013

• curprev 19:3519:35, 29 March 2013‎ Tepples talk contribs‎ 13,532 bytes +268‎ →‎Bank data ($8001-$9FFF, odd): Try to be more specific about what bits are ignored.

6 January 2013

• curprev 18:0318:03, 6 January 2013‎ Tepples talk contribs‎ 13,264 bytes +155‎ →‎Registers: Two independent units

1 September 2012

• curprev 01:3201:32, 1 September 2012‎ Tepples talk contribs‎ m 13,109 bytes −5‎ didn't get 'em all

31 August 2012

• curprev 19:5019:50, 31 August 2012‎ Tepples talk contribs‎ m 13,114 bytes −5‎ Removed links to parodius.com. In case you're wondering, I'm working from search of my own local backup of this wiki.

10 July 2012

• curprev 00:1600:16, 10 July 2012‎ Lidnariq talk contribs‎ m 13,119 bytes +39‎ →‎Variants: 37, too

3 July 2012

• curprev 03:3003:30, 3 July 2012‎ Tepples talk contribs‎ 13,080 bytes −62‎ →‎Pirate variants: moved non-pirate mapper 47 to previous section

13 June 2012

• curprev 20:1120:11, 13 June 2012‎ Lidnariq talk contribs‎ m 13,142 bytes +31‎ →‎Variants: link n108 pinout. also other nits.

4 June 2012

• curprev 21:4221:42, 4 June 2012‎ Tepples talk contribs‎ 13,111 bytes +18‎ →‎Hardware: below in "variants" it calls them old or new

3 June 2012

• curprev 22:5422:54, 3 June 2012‎ Drag talk contribs‎ m 13,093 bytes +103‎ →‎Hardware: dwedit's quote is correct, I'm just explaining it a bit more, using information from PPU rendering#Cycles_256-319
• curprev 14:5714:57, 3 June 2012‎ Zepper talk contribs‎ m 12,990 bytes +118‎ →‎8x16 sprites: quote from Dwedit

31 May 2012

• curprev 01:2101:21, 31 May 2012‎ Lidnariq talk contribs‎ m 12,872 bytes −31‎ Undo revision 3749 by Lidnariq (talk) -- was already linked at the bottom of the article
• curprev 01:1801:18, 31 May 2012‎ Lidnariq talk contribs‎ m 12,903 bytes +31‎ →‎Overview: add link to pinout

2 May 2012

• curprev 22:4322:43, 2 May 2012‎ Tepples talk contribs‎ 12,872 bytes +261‎ →‎Variants: "Old" vs. "new" behavior