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2013-01-12ds2sound.h: Set the interrupt interval to 15.36 milliseconds and explain why.Nebuleon Fumika
2013-01-12Peel loops, aka only unroll loops if their number of iterations is a ↵Nebuleon Fumika
compile-time constant.
2013-01-12Loop unrolling sucks. It was adding loads of instructions per audio sample.Nebuleon Fumika
2013-01-12Revert "Remove shifted envelope heights from the code, because one is always ↵Nebuleon Fumika
set from the other and the shifted height is not used in saved states." This reverts commit e3bb4a5f62ab6b38eb1a58e700b7d713b4e397b0.
2013-01-12Remove redundant writes to support reverse stereo. Define ↵Nebuleon Fumika
FOREVER_FORWARD_STEREO.
2013-01-12Remove shifted envelope heights from the code, because one is always set ↵Nebuleon Fumika
from the other and the shifted height is not used in saved states.
2013-01-12More efficient noise generation taken from blargg's code in Snes9x 1.53.Nebuleon Fumika
2013-01-11Reduce memory access in noise generation.Nebuleon Fumika
2013-01-11Prepare for audio optimisations. Fix the indentation in MixStereo().Nebuleon Fumika
2013-01-11Stop constantly testing for 16-bit and stereo in sound handlers. Define ↵Nebuleon Fumika
FOREVER_16_BIT_SOUND and FOREVER_STEREO and use them throughout the code. This is essentially commit 6b36e79013d4c9273a96a9783a2bccdb516f174a, but for sound instead of graphics.
2013-01-11Fix the interrupts glitching sound. Put the sound back at 22050 Hz.Nebuleon Fumika
2013-01-11Reinstate some delays needed by the code to avoid crashing, and actually ↵Nebuleon Fumika
explain in code comments why they're needed. I know ds2_setBacklight(unsigned int) needs a delay before it, otherwise if done too close to another call, it crashes. This partially reverts commit 8951fdff1aada126257e07699ea6f132cb8d2e65.
2013-01-10Attempt to optimise the ADD background drawing mode so it's playable on ↵Nebuleon Fumika
automatic frameskip in games like Super Metroid. It doesn't work well. See the video for this bug at <http://www.youtube.com/watch?v=sUWjVxAD9Q8>.
2013-01-09Release 1.17.Nebuleon Fumika
2013-01-09Attempt to fix the crashing with sound interrupts, part 2: Stop the timer ↵Nebuleon Fumika
before the menu, and restart it after it ends.
2013-01-09Increase the audio frequency to 48 kHz. Timer interrupt intervals and buffer ↵Nebuleon Fumika
sizes are also tested at 32 kHz and 44.1 kHz.
2013-01-08Try fixing a crash in the sound interrupt.Nebuleon Fumika
2013-01-08Permanently remove NO_OPEN_BUS hacks. It was a premature optimisation.Nebuleon Fumika
2013-01-08Revert "Reinstate FAST_ALIGNED_LSB_WORD_ACCESS for 24-bit jumps." That's in ↵Nebuleon Fumika
port.h now. This reverts commit 3dd99ccae465c370613ded10794749d6253bfe8c.
2013-01-08Reinstate FAST_ALIGNED_LSB_WORD_ACCESS for 24-bit jumps.Nebuleon Fumika
2013-01-08Reinstate SNES Open Bus. It was making Secret of Mana's introduction screen ↵Nebuleon Fumika
sound like a NES with a rusty audio controller.
2013-01-08Release 1.16.Nebuleon Fumika
2013-01-08Merge branch 'master' of https://github.com/ShadauxCat/CATSFCNebuleon Fumika
2013-01-08Remove Open Bus again. Stop synchronising controls so often, now that the ↵Nebuleon Fumika
audio variable latency problem is fixed.
2013-01-08Configurable interrupt interval for the sound timer. Right now, only 22050 ↵Nebuleon Fumika
Hz audio at 2000-microsecond intervals works.
2013-01-08Configurable interrupt interval for the sound timer. Right now, only 22050 ↵Nebuleon Fumika
Hz audio at 2000-microsecond intervals works.
2013-01-08GLORIOUS interrupt-based sound playback. Now, the note-length-hopping ↵Nebuleon Fumika
problem isn't as apparent anymore, and automatic frame skipping doesn't go to 8 FPS all the time in Super Mario World. Thank the deities! Reverses the auto frameskip synchronisation from commit dac11c74ac112728016e51625ac9f2a727152ddd, because that doesn't play well with interrupts.
2013-01-07Release 1.15.Nebuleon Fumika
2013-01-07Require auto_equivalent_skip to be greater than 0 before decrementing it if ↵Nebuleon Fumika
the code is drawing a frame early in automatic frame skip mode. Otherwise, overflow occurs, and we skip 4 billion images.
2013-01-07Revert "Add a bit that tolerates 1/16 latency per frame in automatic ↵Nebuleon Fumika
frameskip mode." This reverts commit d9b6322caafcbd355848a32acd8b8c0fa1746264.
2013-01-07Add a bit that tolerates 1/16 latency per frame in automatic frameskip mode.Nebuleon Fumika
Remove old automatic frameskip code.
2013-01-07Smooth out the automatic frame skipping such that it doesn't go from 1 FPS ↵Nebuleon Fumika
to 8 FPS right away and constantly. The equivalent frame skip will be 2, 3, 5 or 8 most of the time, depending on the game, and will vary a bit depending on rendering demands. For example, the frame skipping in Super Mario World is 3 on the map and in graphically simple levels, and 5 in complex levels.
2013-01-07Fix an off-by-one in the manual frameskip code. It would raise the sound ↵Nebuleon Fumika
speed by 25% if frame skip 3 (Show 1 in 4) rendered a frame early. Optimise the controller code. I don't expect to allow remapping any time soon, because the DS has buttons for every single SNES controller button and nothing more.
2013-01-07Add a section about frame skipping in the readme.Nebuleon Fumika
2013-01-07Add support for user-selected and automatic frame skipping. Add support for ↵Nebuleon Fumika
PAL timings (20 ms per frame). User-selected frameskip causes slowdowns if the game runs slower than the resulting frame rate, but synchronises correctly if the game runs faster. Automatic frame skipping is still the default. It now only skips up to 8 frames, but in some games still skips that entire 8 frames. What's needed is an algorithm that averages frame latencies over a few seconds and skips while the latency is LOWER than the average.
2013-01-06Language file overhaul, part 2. Remove unused messages in all languages.Nebuleon Fumika
It's actually reloading icons that takes so much time.
2013-01-06Language message overhaul, part 1.Nebuleon Fumika
Clean up the names of messages. Mark those that are unused as such in code comments. Raise the CPU level while loading a message file, because it really does take half a second to load a 16 KB file on the lowest frequency (what the eff?).
2013-01-05Release 1.14.Nebuleon Fumika
2013-01-05Sync ALL bits of the joypad again. This may make controls a bit slower to ↵Nebuleon Fumika
parse, but is required by Super Mario All-Stars at least.
2013-01-05Mess with Mode 5 some more. Secret of Mana's menu sprite is fixed; however, ↵Nebuleon Fumika
as of commit 3cd20e203f3b0af8c32921f86547a126d74b34eb (still not fixed in this commit!), Donkey Kong Country's Rareware icon is split by black columns.
2013-01-04Move all CPU cycle calculations into cpuops.cpp.Nebuleon Fumika
2013-01-04Move some CPU cycle calculation from address resolution to the opcodes. This ↵Nebuleon Fumika
is to eventually move it from the resolved-address ops as well, reducing the number of memory stores.
2013-01-02Sleep when the lid is closed AND emulation is running. I don't know to what ↵Nebuleon Fumika
extent this will save on battery usage, though I do set the DSTWO's CPU to the lowest frequency while it sleeps.
2013-01-02Release 1.13.Nebuleon Fumika
2013-01-02Make Display Mode 4 an antialiased whole-screen mode.Nebuleon Fumika
* source/nds/displaymodes.cpp: Rewritten, assigned copyright to myself (GPLv2). * CATSFC/system/language.msg: Changed the English and French text for display modes.
2013-01-01Remove unused files. This reduces the plugin's size by 214 KB.Nebuleon Fumika
unicode.c, unicode.h, charsets.c, charsets.h: UTF-8 is universally used in CATSFC. Drop unused support for GBK/SJIS encodings.
2013-01-01Render double-width-res tiles from Background Mode 5 as half-width tiles. ↵Nebuleon Fumika
This makes the menu text in Secret of Mana readable. Sprites in Background Mode 5 are still messed up. At least they're at the right X coordinate, roughly...
2012-12-31Release 1.12.Nebuleon Fumika
2012-12-31ppu.cpp: Store multiplicands and quotients using aligned 16-bit writes ↵Nebuleon Fumika
(little-endian). Fold more identical case statements in the huge switch.
2012-12-31Fix PPU resets. This fixes Legend of Zelda: A Link to the Past.Nebuleon Fumika
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