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NSFPlay 2.2 has been released! Get it here:

http://nsfplay.googlecode.com/files/nsfplay22.zip

The most significant update is NSFe support, but there's a bunch of other minor changes.

NSFPlay 2.2 - 8/31/2012
Audio Emulation:
- Unmute on reset now sets $4015 to $0F instead of $1F.
- PAL noise frequency $1 now 8 instead of incorrectly 7.
- New VRC7 patch set, option to select alternative patch sets via VRC7_PATCH.
- 5B polarity inverted, envelope adjusted, volume tweak.
- MMC5 polarity inverted, length counter runs at double speed, highest 8 frequencies are not muted.
- VRC6 $9003 register implemented (controls halt and frequency multiplier)
- VRC6 polarity inverted, phase reset now functions properly.
- FDS now uses NSF header $76/$77 to set up $6000-7FFF memory range.
- FDS $4087 bit 7 now mutes modulator.
- Enable periodic noise option fixed. (Forced perodic noise by accident.)
Other:
- Fixed improper $4015 read implementation (should return length counter status), also DPCM IRQ was not initialized.
- Default focus in keyboard window now the track list (to prevent accidental mouse scroll time expansion).
- Fixed Winamp visualizer timing inaccuracy, changed default keyboard delay/freq.
- Inverted VRC7 volume display in keyboard view.
- NSFe support.
- Added NSFe extension block 'text', contains null terminated string of any length (NSF text).
- Removed broken ENABLE_DCF config option. HPF=256 now correctly disables HPF.
- Rewrote LPF and HPF, should have a more usable range of options now.
- Removed XXX_FR/XXX_FC options, now XXX_FILTER works like LPF for each device.
- Memory R/W access is now exclusive to the first device that accepts it; prevents FDS multi-expansion write conflicts.
- Title string will automatically remove whitespace at its beginning or end.
- Fixed single instance bug, was failing to open new NSF file when chosen from explorer.
- Fixed conflicts between keyboard commands and other dialogs.
- Removed tag menu from info page. Does not appear to apply to NSFs.
- Fixed incorrect PAL pitch when QUALITY=0.

NSFPlay 2.1 - 3/27/2012
Audio Output:
- Fixed race condition in audio buffering; stand alone NSFPlay would occasionally get stuck stuttering.
- Produces stereo output, channel mixer dialog for panning and per-channel volume control.
- Fixed PCM playback speed; CPU execution was counting requested clocks, not clocks executed.
- Fixed accuracy of seek times.
- Loop detection now accounts for all audio registers, not just a subset of 2A03 and N163.
- N163 wavelength is actually 6-bit, not 3. Now allows sample length up to 256.
- Fixed FDS volume/sweep envelope caps. (Direct register writes can make them louder.)
- Fixed FDS modulation bias calculation and wrapping.
- Set default volume for VRC7 and FDS a little lower (to match expected levels).
- MMC5 PCM support (for both read and write mode).
- Added phase reset option to MMC5.
- MMC5 was missing length counter and audio register reads; rewrote to conform with APU.
- Adjusted phases for APU/MMC5 square channels to match NesDev's description.
- APU/DMC/MMC5 rewrite of envelope/length/sweep behaviour to use a frame sequencer instead of independent timers.
Options:
- Option to randomize noise on reset (on by default).
- Options cleanup, removed unused/deprecated options from .ini file.
- Using global LPF by default instead of on each device (saves CPU, same result).
- Keyboard view channel colour is now customizable in .ini file (CHANNEL_XX_COL).
Keyboard view:
- Fixed crash due to keyboard OnTimer being allowed before Reset() is executed by the PlayThread.
- Double buffering keyboard view to remove flicker.
- Different colours for different expansions in keyboard view.
- Fixed sound lag after seek.
- FME-7 now named 5B, N106 now named N163.
- DPCM now named DMC in keyboard view.
- Fixed 5B volume display (E now correctly indicates envelope, volume is now correct value).
- 5B now displays envelope and noise.
- VRC6 saw volume now displays accumulator register.
- Corrected VRC6 saw pitch in keyboard view.
- Fixed trailing lines on N163 waveform display.
- DMC volume display no longer flipped (is now $4011 register value).
- DMC now shows sample frequency rather than byte frequency.
- Triangle and noise were not showing muting due to length counter of 0.
- Noise now has frequency display (either rate of random samples, or tonal frequency for periodic noise).
- Removed feature that extends the life of key dots beyond the frame the channel is active (frequency can change when key is silent, esp. VRC6 squares, which visibly jump to the wrong pitch)
Other:
- Save WAV button on NSFPlay.
- Command line WAV output for batch processing.
- Added extra NSF header information to "misc" text box, initial banks, load/init/play addresses, etc.
- Fixed thread-safety issue for configuration (was accessed liberally from many threads).
- Removed legacy code for windows versions older than XP.

NSFPlay 2.0 - 2/22/2012
- Restructured sln/vcproj files, and rebuilt for VS9.
- All intermediate files go into common Debug/Release directories.
- Renamed wa2nsf project to in_yansf to match name of the plugin.
- Fixed improperly set WAVEFORMATEX header in libemuwa2 (allows execution on windows Vista/7).
- Corrected pitch of noise channel.
- Updated VRC7 default patch set.
- Added PAL support and pal flags indicator (PREFER_PAL=1 to prefer PAL for dual mode).
- Added about box for determining build version.
- Fixed some menu items in English dialogs.
- Fixed some initial config settings.
- Fixed crash when using playlist menu options with no loaded NSF.

NSFPlay - 12/09/2006
- Written by Brezza > http://www.pokipoki.org/dsa/index.php?NSFplay

Project homepage: http://rainwarrior.ca/projects/nsfplay/