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https://github.com/libretro/bsnes-libretro.git
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bsnes is a Super Nintendo (SNES) emulator focused on performance, features, and ease of use.
3c2ca5a383
byuu says: Removed snes_spc, and the fast/smp + fast/dsp wrappers around it. Cloned dsp to fast/dsp, and re-added the state machine, affects Compatibility and Performance cores. Added debugger support to fast/cpu, with full properties list and Qt debugger functionality. Rewrote all debugger property functions to return data directly: - this avoids some annoying conflicts where ChipDebugger::foo() overshadows Chip::foo() - this removes the need for an extra 20-200 functions per debugger core - this makes the overall code size a good bit smaller - this currently makes PPU::oam_basesize() inaccessible, so the OAM viewer will show wrong sprite sizes Used an evil trick to simplify MMIO read/write address decoding: - MMIO *mmio[0x8000], where only 0x2000-5fff are used, allows direct indexing without -0x2000 adjust So end result: both save states and debugger support work on all three cores now. Dual Orb II sound is fixed. The speed hit was worse than I thought, -7% for compatibility, and -10% for performance. At this point, the compatibility core is the exact same code and speed as v067 official, and the performance core is now only ~36-40% faster than the compatibility core. Sigh, so much for my dream of using this on my netbook. At 53fps average now, compared to 39fps before. Profiling will only get that to ~58fps, and that's way too low for the more intensive scenes (Zelda 3 rain, CT black omen, etc.) It would probably be a good idea to find out why my DSP is so much slower than blargg's, given that it's based upon the same code. The simple ring buffer stuff can't possibly slow things down that much. More precisely, it would probably be best to leave blargg's DSP in the performance core since it's a pretty minor issue, but then I'd have to have three DSPs: accuracy=threaded, compatibility=state-machine, performance=blargg. Too much hassle. Only code in the core emulator now that wasn't at the very least rewritten for bsnes would be the DSP-3 and DSP-4 modules, which are really, really lazily done #define hacks around the original C code. |
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| launcher | ||
| libco | ||
| nall | ||
| obj | ||
| out | ||
| qt | ||
| ruby | ||
| snes | ||
| cc.bat | ||
| clean.bat | ||
| Makefile | ||
| sync.sh | ||