Max/SameBoy
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164 Commits

Author SHA1 Message Date
Lior Halphon
5c854dbdca Interference emulation 2020-12-31 00:07:04 +02:00
Lior Halphon
555835549a More accurate pausing behavior, including revision differences 2020-12-12 20:35:18 +02:00
Lior Halphon
dffc12331b Emulate the delayed NR44 write on the DMG 2020-12-12 18:11:35 +02:00
Lior Halphon
7de6194e28 Redo channel 4's timing accurately, emulate NR43 write quirks 2020-12-12 16:02:25 +02:00
Lior Halphon
1baa0446a9 More sweep improvements 2020-12-01 22:37:13 +02:00
Lior Halphon
13bc8679f9 Correct preservation of NRx1's state on pre-CGB models 2020-12-01 14:18:19 +02:00
Lior Halphon
74cf452a48 Further accuracy improvements to sweep; passes Blargg's APU tests again, this time for real 2020-12-01 14:17:35 +02:00
Lior Halphon
0485124076 Redo channel 1 sweep based on DMG schematics; emulates two newly discovered behaviors and also fixes #309 2020-11-28 19:31:25 +02:00
Lior Halphon
cd2310f0a7 Wave RAM reads 0xFF while active on AGBs 2020-11-20 19:39:54 +02:00
Lior Halphon
3cba3e8e27 Emulate CGB-C PCM read glitch, fix a potential noise volume envelope bug 2020-05-10 00:37:52 +03:00
Lior Halphon
6448a692e2 Add smart rumble to games without a rumblepak 2020-04-29 16:06:11 +03:00
Lior Halphon
0cf168f32b Fixing inconsistent style 2020-04-24 20:37:57 +03:00
Lior Halphon
a6567d9ee1 Update old coding style 2020-04-09 14:32:52 +03:00
Jakub Kądziołka
67d5a53503
Spell "length" properly 2020-02-27 18:11:10 +01:00
Lior Halphon
b806ae4e82 Fix #228 2020-02-01 23:36:16 +02:00
Lior Halphon
143e1f88a8 There’s not reason it must be an integer 2019-11-03 22:02:33 +02:00
Lior Halphon
dee29c118c Added GB_set_sample_rate_by_clocks API, split SGB_NO_SFC into PAL and NTSC; now they report the correct clock rate. 2019-10-08 15:10:24 +03:00
Lior Halphon
ca370eee7e A bit more accurate AGB audio rendering 2019-10-01 18:50:59 +03:00
Lior Halphon
ac418b9de1 Pass channel_1_freq_change_timing 2019-09-30 00:09:25 +03:00
Lior Halphon
4541efe86a Fixed a bug that prevented writing to the wave RAM, as well as a bug where the wave RAM was treated as zeros despite not being zero’d out 2019-06-29 14:03:42 +03:00
Lior Halphon
e268efefef Redesign and reimplement the audio API, let the frontends handle more stuff. Probably affects #161 2019-06-15 23:22:27 +03:00
Lior Halphon
9d8adbb581 This is not correct, this bug only affects the PCM registers and not actual output. Currently not emulated at all. 2019-06-07 18:37:19 +03:00
Lior Halphon
64879f5b02 Accurate emulation of (most aspects of) stop mode 2019-06-07 13:53:50 +03:00
Lior Halphon
4c34e0a6e0 Turns out the AGB inverts Channel 3’s output 2019-06-01 18:22:58 +03:00
Lior Halphon
85c43fa81f Fixed Channel 3’s first sample behavior, update analog characteristic to more realistic values. Fixes #177 2019-05-25 19:12:09 +03:00
Lior Halphon
280467ad38
Merge branch 'master' into master 2019-05-17 20:31:52 +03:00
Lior Halphon
91eeb4d9d5 Emulate AGB audio mixing 2019-05-17 00:08:34 +03:00
ISSOtm
40f83c8f25 Add APU-related debugger commands 
This change includes making one of the APU functions public
 2019-05-15 12:45:51 +02:00
Lior Halphon
ddc4e7484b Fix and restore optimization 2019-05-10 22:29:30 +03:00
Lior Halphon
06670fc970 Fix #172. Allow unroll optimizations when compiling with GCC. 2019-05-10 21:51:11 +03:00
orbea
2bded45397 Disable pragmas for gcc. 2019-05-09 10:55:31 -07:00
Lior Halphon
dde06e7cae Work around a crashing race condition, proper fix needed 2019-01-28 20:56:37 +02:00
Lior Halphon
7b36ee10a4 Merge branch 'master' into sgb 2019-01-05 19:00:22 +02:00
Lior Halphon
4051f190a5 Cache cycles_per_sample to avoid FP arithmetic 2019-01-01 00:42:40 +02:00
Lior Halphon
9d947c7ce6 Unroll some APU loops 2018-12-31 23:09:56 +02:00
Lior Halphon
2d6d1e6325 SGB boot animation 2018-11-24 13:21:00 +02:00
Lior Halphon
a39b314378 Fixed silly APU regression (Noise volume envelope ran too fast) Fixes #121 2018-11-03 14:37:19 +02:00
Lior Halphon
64922fff4b Fixed a bug where channels 1 and 2 would start playing earlier than they should have if NRx4 was written to twice. Fixes #86. 2018-10-29 00:44:43 +02:00
Lior Halphon
3035f43428 Emulation of DAC charging, Fixes #46, #85, #88 and #89 2018-10-19 23:53:01 +03:00
Lior Halphon
4276549acd Research notes TODOs 2018-10-19 01:02:27 +03:00
Lior Halphon
324201f336 Correct emulation of switching the DACs on and off. Fixes #100 and #87 2018-10-17 20:35:29 +03:00
Lior Halphon
ec0a879a93 Correct emulation of enabling and disabling the volume envelope. Correct emulation of a glitch where the volume envelope ticks when it usually wouldn’t. 2018-09-10 16:59:59 +03:00
Lior Halphon
3151821e6d Fixed minor APU regression (Channels 1 and 2 were given no delay under certain circumstances) 2018-09-09 12:50:55 +03:00
Lior Halphon
b1cc55b786 Turns out Left/Right audio channels were flipped 2018-07-19 20:38:11 +03:00
Lior Halphon
c66b6fbafc Fixed an edge case with DAC discharge emulation 2018-07-16 23:08:25 +03:00
Lior Halphon
2e9e3424ec Document some revision differences 2018-07-14 21:52:54 +03:00
Lior Halphon
0145b790a3 Merge branch 'v0.11.x' 2018-07-11 20:08:33 +03:00
Lior Halphon
5f58323c01 Attempt to improve audio quality on frontend with big audio buffers 2018-07-10 21:33:03 +03:00
Lior Halphon
dc5cb71c22 Emulate CGB-C’s quirky LFSR function 2018-07-04 21:55:12 +03:00
Lior Halphon
45c73e0175 Replaced the is_cgb bool with a more future compatible model enum. Removed the GB_init_cgb API and replaced it with an extended GB_init and GB_switch_model_and_reset APIs that now receive a model parameter. Increased the struct version. 2018-06-16 13:59:33 +03:00
Lior Halphon
38c0cb3323 Typo 2018-06-09 15:12:42 +03:00
Lior Halphon
f64da1864f APU glitch: When turning the APU on while DIV's bit 4 (or 5 in double speed mode), the first DIV/APU event is skipped. 2018-06-09 15:11:20 +03:00
Lior Halphon
562b43a7c5 Notes about the DMG wave-ram glitch 2018-05-15 23:02:07 +03:00
Kyle Swanson
7bfe5de9c7 chmod -x 2018-03-28 21:37:34 -07:00
Lior Halphon
0912a30bb9 Fixed a regression in dmg_sound-2 2018-03-27 21:04:55 +03:00
Lior Halphon
c48097a484 Convert div counter to the SM mechanism 2018-02-23 13:16:05 +02:00
Lior Halphon
9802ca41dd Components not affected by CGB’s double speed mode now operate in 8MHz mode to theoretically make advance_cycles(gb, 1) safe. 2018-02-20 21:17:12 +02:00
Lior Halphon
f79af39ea2 More accurate emulation of the APU’s analog characteristics 2018-02-16 18:01:50 +02:00
Lior Halphon
fc35111ae7 Corrected the emulated DAC’s range 2018-02-16 01:26:37 +02:00
Lior Halphon
0c231db9e7 This is probably not correct (and makes no sense from an hardware design perspective), but this correctly emulates my analog test cases and fixes the pops introduced by the last commit. 2018-02-13 23:13:15 +02:00
Lior Halphon
bfb37884e1 Inactive channels are not equivalent to channels with 0 volume. 2018-02-11 22:50:15 +02:00
Lior Halphon
afcc66fb3c Added CPU under/over-clocking support in Core, add under-clocking hotkey in the Cocoa port, allow modifier keys to be configured as input keys in Cocoa. 2018-02-10 23:30:30 +02:00
Lior Halphon
09dd47c6de Fixed unintentional delay in NR50 and NR51’s effects 2018-01-19 19:56:39 +02:00
Lior Halphon
37906bcd1f Fixed sound pops in Super Mario Land 2. 2018-01-19 00:47:46 +02:00
Lior Halphon
0a76881eb6 Correctly emulating NRx4 effects on the sound envelop of the previously playing sound. Closes #19 2018-01-06 12:37:45 +02:00
Lior Halphon
a20e8a8220 Fixed bug in NR42 write that also caused memory corruption 2018-01-06 12:17:06 +02:00
Lior Halphon
a1af4c59ca Fixed NR51 volume levels (They’re 1-8, not 0-7) 2018-01-06 11:58:49 +02:00
Lior Halphon
61f9dbd95d Use SDL’s key mapping when available 2017-12-28 20:22:54 +02:00
Lior Halphon
c1f27d7b27 Spacing 2017-10-02 22:59:03 +03:00
Lior Halphon
d9b0576351 Emulation of NRX2-write glitches. Fixes Prehistorik Man audio. 2017-10-02 22:56:24 +03:00
Lior Halphon
67f1566b5e Minor refinement to sweep 2017-09-23 00:23:02 +03:00
Lior Halphon
e0a6edac35 Setting sweep period to 0 cancels pending calculate event 2017-09-22 14:53:24 +03:00
Lior Halphon
2ffce49e16 Minor bugfixes related to sweeping 2017-09-22 14:39:39 +03:00
Lior Halphon
75db33559a Current sample index (Channel 1 and 2) is only reset after turning the APU off 2017-09-22 02:25:06 +03:00
Lior Halphon
8f4cd5c412 Corrected behavior for channel 1 and 2 restart 2017-09-22 02:04:29 +03:00
Lior Halphon
882b141478 Fixed dmg_sound-1 2017-09-21 18:32:21 +03:00
Lior Halphon
2ca550273a Fixed dmg_sound-5 2017-09-21 18:18:10 +03:00
Lior Halphon
d3c15ef6ca Fixing APU bugs, one at a time: Blargg’s dmg_sound 8.2 2017-09-21 14:52:09 +03:00
Lior Halphon
62878fdc7a More accurate div-event handling 2017-08-15 22:27:15 +03:00
Lior Halphon
8d011ca4b9 Accuracy improvements (Sweep) 2017-08-15 22:05:20 +03:00
Lior Halphon
d04aaddcbd Added highpass filter 2017-08-15 21:59:11 +03:00
Lior Halphon
ca59aca4a6 Fixed a bug where writing to NR52 affected channels 1 and 2’s duty pattern in DMG mode. Fixed NR43 being written to NR44 as well. 2017-08-13 20:26:35 +03:00
Lior Halphon
36943866e2 Better click prevention 2017-08-12 23:35:18 +03:00
Lior Halphon
dba7370d6d Turns out APU signal is inverted. This fixes Perfect Dark’s audio. 2017-08-12 20:47:55 +03:00
Lior Halphon
688991f57f The volume envelopes and length controls are handled in different phases of the div-divider 2017-08-12 20:17:20 +03:00
Lior Halphon
4b8be255ce Fixed some channel 4 delays, documented a not currently emulated timing quirk. 2017-08-12 19:50:39 +03:00
Lior Halphon
066efab985 In DMG mode, the length registers are not affected by turning the APU on and off. Why? Why not! 2017-08-11 22:23:03 +03:00
Lior Halphon
0e22ad8eb1 Noise channel support 2017-08-11 17:57:08 +03:00
Lior Halphon
1a8bcd314d Accuracy improvements to sweeping (Still not complete though, more research needed) 2017-08-10 19:42:23 +03:00
Lior Halphon
ab5611119a Accuracy improvements, especially to the length control 2017-08-02 21:14:23 +03:00
Lior Halphon
d65c2247e5 Added channel 1 and 2, fixed accuracy issues with channel 3 2017-07-27 23:11:33 +03:00
Lior Halphon
2936f7fa57 Fixed channel 3 counter behavior, verified with new tests. The DIV register ticks the APU at 512Hz. 2017-07-22 19:51:11 +03:00
Lior Halphon
a19ee1e5e0 2MHz audio downscaling support. Implemented NR50 and NR51. 2017-07-21 23:17:48 +03:00
Lior Halphon
baccf336d7 Complete rewrite of the APU. Channel 3 is complete and passes all the relevant tests from blargg’s suite, as well as PCM34-based tests. Actual sound output is basic and limited, though. 2017-07-21 19:06:55 +03:00
Lior Halphon
c59272d46d Misc minor fixes, fixes several Mooneye-GB tests 2017-06-21 20:39:23 +03:00
Lior Halphon
6dd24e0733 Fixed hung note issue. Closes #7 2017-05-13 17:04:05 +03:00
Lior Halphon
00623d4eea - Added audio supersampling support to greatly improve audio quality. 
- Fixed a bug where low sampling rate or disabled sound resulted in wrong APU behavior.
- Added API to get the current number of pending samples.
- This change broke save state compatibility with v0.8 and older
Closes #8.
 2017-05-12 17:11:55 +03:00
Lior Halphon
a925ef130d Stabilizing API: New joypad, debugger and reset APIs; internal APIs and direct struct access are no longer available without defining GB_INTERNAL. The SDL port uses the new “public” APIs, as well as most of the non-debug Cocoa code. 2017-04-17 20:16:17 +03:00
Lior Halphon
252439c1af Fixed a deadlocking race condition that might happen when reading APU memory in the hex viewer 2016-09-21 01:59:43 +03:00
Lior Halphon
37e895352f Volumes no longer doubles 2016-09-20 19:58:30 +03:00