Commit graph

76 commits

Author SHA1 Message Date
NovaSquirrel
6ea0f4f40d Revert "Merge pull request #42 from Gumball2415/feature-add-2a03-interference"
This reverts commit f1696a90be, reversing
changes made to c130c1df82.
2021-11-10 18:36:55 -05:00
NovaSquirrel
aebae692c1 Revert "Merge pull request #43 from Gumball2415/feature-add-2a03-interference"
This reverts commit ba186e1956, reversing
changes made to f1696a90be.
2021-11-10 18:36:51 -05:00
NovaSquirrel
bb9d052955 Revert "Merge pull request #44 from Gumball2415/feature-add-2a03-interference"
This reverts commit c5ac9ecb74, reversing
changes made to df1e9c9c27.
2021-11-10 18:36:47 -05:00
Persune
5b58c011be Refactor code 2021-08-15 00:22:20 +08:00
Persune
212f17215c Reduce /A13 aliasing
PPU /A13 changes at the PPU's clock rate, which is 3x that of the CPU
clock rate.
2021-08-14 20:36:24 +08:00
Persune
5077180c55 Adjust audio interference mix to match better
TODO: add highpass filter to /OE1
2021-08-14 17:24:06 +08:00
Persune
a22b17b2c1 Add /A13 and /OE1 audio interference
In hardware, the audio from the 2A03 APU pins go through an inverted
preamp using one of the 74HCU04 inverter chips in the motherboard.
Though this may be cost-effective on Nintendo's part, the signals on the
hex inverter chip can interfere with one another, especially on the
audio. This can be heard as a buzz or a high pitched whine.

The only known signals to interfere with the audio so far is:
- /A13, the inverted signal of PPU A13 going into the cartridge
   connector.
- /OE1, Output enable for controller reads, though this is only found
   present on the RF Famicom.
2021-08-11 17:55:56 +08:00
Perkka2
000bfb1a71 Renamed EPSG to EPSM, changed NSF header bit for EPSM from 6 to 7 2021-07-30 14:21:56 +02:00
Perkka2
9bea4c87ee Adjusted volume levels for EPSG FM/SSG 2021-03-18 14:39:29 +01:00
Perkka2
5203ff1217 Define to chose between Old and New VRC7 emu 2021-01-28 22:49:49 +01:00
Perkka2
6c5454638f Fixed noise and volume for VRC7 2021-01-28 22:19:47 +01:00
Perkka2
d82a8fffb5 Replaced the old OPLL Emu with Nuked-OPLL 2021-01-28 18:18:34 +01:00
lapinozz
d7213a76d5 Fixed SSG overflow and fixed relative clock for SSG/EPSG 2021-01-28 18:18:34 +01:00
lapinozz
5d00c055e6 Added EPSG audio to both suncore and MMC3 2021-01-28 18:18:34 +01:00
Sour
61aaf6193e Equalizer: Fixed sample wrapping when outside of int16_t range 2020-02-11 23:03:30 -05:00
Sour
8047fe44bb Added Study Box tape support (.studybox files)
-Added audio support
-Improved emulation logic
-Games are loaded via .studybox files
2019-12-31 20:24:06 -05:00
Sour
c7675bcd49 Core: Added runahead support (1 to 10 frames) 2019-12-24 13:55:40 -05:00
Sour
7b20300f6d DirectSound: Fixed latency issue that caused sound to cut off within the first second after loading a rom after starting the emulator 2019-11-24 10:53:53 -05:00
Sour
a72acc9f1a Core: Rewrite DMC/OAM DMA, tweak PPU timings, add option to simulate PPU/CPU alignments 2019-11-11 21:10:47 -05:00
Sour
886ae6425f Fixed some cases of variables being used before initialization 2019-06-23 20:11:10 -04:00
Sour
7247b0cb4b History Viewer: Prevent history viewer from being opened before some history exists (prevents crash when trying to use resume gameplay) 2018-08-06 18:32:22 -04:00
Sour
27ee26c6cb Fixed build issues for Libretro and Linux 2018-08-03 22:49:10 -04:00
Sour
781650e8bf Audio: Added comb filter stereo effect 2018-08-03 10:49:23 -04:00
Sour
115f46e05f Audio: Improved dynamic sample rate logic and added an option to disable it completely 2018-08-02 22:09:55 -04:00
Sour
7e905b89c5 Audio: Disable dynamic sample rate adjustment when recording wav/avi 2018-07-31 18:58:50 -04:00
Sour
15373016d0 Refactoring - removed statics from EmulationSettings 2018-07-14 18:32:32 -04:00
Sour
2f9581ff2f VS DualSystem: Added options to select which video/audio streams to show/play 2018-07-08 10:28:48 -04:00
Sour
47fbe93b62 Added support for VS DualSystem (WIP - dual video/audio, input, save states, movies & netplay working) 2018-07-08 10:28:48 -04:00
Sour
04310eddb4 Core refactoring (remove static variables) - WIP 2018-07-08 10:28:47 -04:00
Sour
d10b11f0b3 Audio: Added option to reduce volume during fast forward/rewind 2018-06-27 19:49:47 -04:00
Sour
1e90a71394 Linux: Removed -Wno-switch option and fixed warnings 2018-06-25 15:56:05 -04:00
Sour
40606f924a Fixed compilation warnings 2018-06-19 20:48:57 -04:00
Sour
e18fab0557 Libretro: Do not adjust sample rate for audio (fixes sound regression) 2018-06-17 23:09:02 -04:00
Sour
44ca91adb1 Savestates: Fixed audio issues when loading savestate saved in one region while the UI is configured to use another region (e.g ntsc vs pal) 2018-06-12 16:37:36 -04:00
Sour
335a133e0a Audio: Improved audio/video sync and reduced static/glitches in output (on both Windows & Linux) 2018-06-09 14:03:53 -04:00
Sour
f044e2b57f Fixed uninitialized variable accesses 2018-01-07 09:44:43 -05:00
Souryo
13103551cf Netplay: Fixed some potential multithreading issues 2017-11-14 00:02:55 -05:00
Souryo
ef63dfa816 Video: Added 60.0/50.0 fps mode 2017-09-30 11:24:35 -04:00
Souryo
a562c71094 HD Packs: Allow replacing game audio 2017-08-19 16:46:57 -04:00
Souryo
cf8c98f384 Overclocking: Changed APU behavior when adding extra lines before/after NMI (helps reduce overclocking-related issues) 2017-04-29 21:39:57 -04:00
Souryo
3a6c8ca416 Added rewind functionality 2017-04-28 19:54:58 -04:00
Souryo
51be9b825d MMC5: Reduced square channel volume (to match APU's square channels) 2017-04-26 22:24:38 -04:00
Souryo
db9a453444 Audio: Equalizer 2017-04-15 13:54:47 -04:00
Souryo
1ef3c62d33 Fixed compilation warnings 2017-04-04 07:49:06 -04:00
Souryo
619bc956bd Optimizations: Improved emulation performance (5-15% speed boost depending on game) 2017-04-02 17:41:24 -04:00
Souryo
0f5c7fe78b Video: Added "Video Recorder" to record AVI files 2016-12-29 21:19:13 -05:00
Souryo
5c9de5b887 Audio: Fixed apu_mixer test (broken by 0.6.0 panning options) 2016-12-19 21:13:40 -05:00
Souryo
cbc61a1bac Fixed all GCC errors and most warnings 2016-12-11 10:56:23 -05:00
Souryo
e24514781f Audio: Added channel panning options 2016-12-09 21:23:20 -05:00
Souryo
2fac266303 Audio: Added crossfeed option for stereo filters 2016-12-09 14:47:34 -05:00