BSNES 0.020 released

[Robert]

SNES emulator

 

2007-06-03 - bsnes v0.020 released

 

Five months and 43 WIP releases in the making, today I am releasing bsnes v0.020. I'd really like to express my thanks to blargg, for he has written a new S-DSP emulator that is an impressive 32 times more precise than all existing S-DSP emulators. It is now bus-accurate, and should produce bit-perfect sound output to that of a real SNES, excepting very minor, very extreme edge cases. Not only did he do this, he went out of his way to develop a special version exclusively for bsnes to ease licensing concerns and take advantage of bsnes' unique features, notably cothreads. I can't thank him enough. Unfortunately, bsnes has taken a ~10% speed hit over v0.019 by using this new S-DSP emulator, but I must stress the speed hit is entirely due to the way bsnes is implemented. blargg's standalone S-DSP emulator is very, very fast. Anyone is free to take a look at his S-DSP emulator, as he has released it as open source under the LGPL, by visiting his homepage.

 

Unfortunately, the new cross-platform UI is not entirely finished. Some sacrifices had to be made to support libui. Specifically, the following features are missing from v0.019, but will hopefully be added back in future releases:

 

* Fullscreen support

* Input Configuration panel cannot capture joypad input. Joypad support is still present, but it must be mapped manually through the Advanced panel or through editing bsnes.cfg by hand

* The Cheat Code Editor is missing, but cht files can still be used from bsnes v0.019, and created by hand

Sufami Turbo support is not accessible from the UI

* The UI on Windows is slightly less polished due to compromises to allow the UI to be readable on Linux.

 

I am sorry for the rough edges listed above, but I wanted to get a new release out, as it has been over five months since the last release, and I really want the world to be able to experience blargg's new S-DSP emulator.

 

 

Changelog:

 

* Added blargg's new S-DSP emulator, runs at 1.024mhz. Many thanks to blargg for this, as this puts all portions of SNES emulation except for the S-PPU at bus-accuracy

* blargg's S-DSP core fixes bugs in both Koushien 2 (J) and Toy Story (U)

* Corrected all S-SMP cycle timings to be hardware accurate. Thanks to blargg for creating an amazing test ROM that tested every possible opcode

* Corrected S-CPU wai instruction timing, fixes Mortal Kombat II

* Reverted HDMA sync emulation once more to fix Breath of Fire II (G) and Secret of Mana (U)

* Completely rewrote user interface to use libui, which is a wrapper that allows the same code to produce the same UI on both Windows (through the Win32 API) and Linux (through the GTK+ API)

* Corrected $2100.d7 OAM reset behavior, thanks to research from anomie

* Massively revamped the Linux port, should compile with no warnings or errors now

* Added 64-bit support to libco, tested on FreeBSD/amd64, should work on Linux as well

* Revamped makefile with suggestions from Nach

* Improved Linux Xv renderer to use the far more common YUY2 format, which should work on most Xorg drivers, allowing hardware accelerated video scaling

* Completely rewrote config file system. bsnes.cfg is now saved to user's profile folder on both Windows and Linux, allowing multi-user support

* A lot more work has been done behind the scenes, including massive code cleanups and portability improvements

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Edited June 11, 2007 by Robert