MMC5 audio: Revision history

3 April 2023

• curprev 04:5004:50, 3 April 2023‎ Rainwarrior talk contribs‎ 5,367 bytes +122‎ →‎References: volume test ROM

5 June 2021

• curprev 17:1717:17, 5 June 2021‎ Ben Boldt talk contribs‎ 5,245 bytes +642‎ Added expansion audio circuit used on HVC-ETROM-02 PCB.

25 December 2020

• curprev 01:4501:45, 25 December 2020‎ Rainwarrior talk contribs‎ 4,603 bytes +199‎ adding a link to some of the tests used to verify MMC5 audio functions

10 December 2020

• curprev 22:0922:09, 10 December 2020‎ Rainwarrior talk contribs‎ 4,404 bytes +166‎ note about volume of PCM

21 July 2019

• curprev 22:1422:14, 21 July 2019‎ Rainwarrior talk contribs‎ 4,238 bytes +22‎ →‎Pulse 1 ($5000-$5003): link frame counter to clarify

29 October 2018

• curprev 00:5800:58, 29 October 2018‎ Ben Boldt talk contribs‎ 4,216 bytes +630‎ →‎Pin 2 DAC Characteristic: Added info about constant current

19 October 2018

• curprev 18:4718:47, 19 October 2018‎ Ben Boldt talk contribs‎ 3,586 bytes +74‎ →‎Pin 2 DAC Characteristic
• curprev 18:4218:42, 19 October 2018‎ Ben Boldt talk contribs‎ 3,512 bytes +31‎ →‎Pin 2 DAC Voltages: Updated to show observations considering AVcc
• curprev 18:0118:01, 19 October 2018‎ Ben Boldt talk contribs‎ 3,481 bytes +180‎ →‎Pin 2 DAC Voltages: Added additional DAC observation

18 October 2018

• curprev 22:1822:18, 18 October 2018‎ Ben Boldt talk contribs‎ 3,301 bytes +229‎ →‎Raw PCM ($5011): Added specifics about DAC voltage

14 October 2018

• curprev 00:0500:05, 14 October 2018‎ Ben Boldt talk contribs‎ 3,072 bytes +112‎ →‎Read: Bit 0 is set with default value... Adding note, this is most likely just reading back the mode bit.
• curprev 00:0000:00, 14 October 2018‎ Ben Boldt talk contribs‎ 2,960 bytes +102‎ Added default power-on values.

9 May 2015

• curprev 15:4915:49, 9 May 2015‎ PGCX864 talk contribs‎ 2,858 bytes +85‎ No edit summary

20 March 2015

• curprev 20:1820:18, 20 March 2015‎ Rainwarrior talk contribs‎ 2,773 bytes +28‎ this note about output is only about the squares

4 March 2013

• curprev 21:3121:31, 4 March 2013‎ Rainwarrior talk contribs‎ m 2,745 bytes −326‎ →‎PCM description: suggestion to have DMC and MMC5 playing the same data is confusing (and useless)

26 May 2012

• curprev 19:4619:46, 26 May 2012‎ Rainwarrior talk contribs‎ m 3,071 bytes +13‎ expansion audio category

17 May 2012

• curprev 16:5316:53, 17 May 2012‎ Tepples talk contribs‎ m 3,058 bytes 0‎ supersonic means faster than sound propagation in air; ultrasonic means higher frequency than humans can hear
• curprev 01:2201:22, 17 May 2012‎ Rainwarrior talk contribs‎ 3,058 bytes +139‎ →‎Pulse 1 ($5000-$5003): note on sweep unit and silencing

4 May 2012

• curprev 02:5502:55, 4 May 2012‎ Rainwarrior talk contribs‎ 2,919 bytes +144‎ →‎Overview: note about polarity and magnitude of signal
• curprev 02:5202:52, 4 May 2012‎ Rainwarrior talk contribs‎ 2,775 bytes +108‎ →‎Write: clarify that 0 is indeed ignored for writing as well
• curprev 02:5002:50, 4 May 2012‎ Rainwarrior talk contribs‎ 2,667 bytes +392‎ →‎Pulse 1 ($5000-$5003): clarification of length counter and other functions that are different from APU

3 January 2010

• curprev 23:0523:05, 3 January 2010‎ Loopy talk contribs‎ 2,275 bytes +37‎ →‎Write
• curprev 22:5722:57, 3 January 2010‎ Loopy talk contribs‎ m 2,238 bytes −86‎ the bit about PCM never being used isn't true
• curprev 22:5122:51, 3 January 2010‎ Loopy talk contribs‎ 2,324 bytes +93‎ PCM details updated. Verified on MMC5 hardware.

12 June 2009

• curprev 12:4812:48, 12 June 2009‎ Banshaku talk contribs‎ m 2,231 bytes +2,231‎ Created page with '== Overview == Nintendo's MMC5 mapper provides extra sound output, consisting of two pulse wave channels and a PCM channel. The pulse wave channels behave almost ident...'