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FCEUX 2.5.0 Release
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31 October 2021
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+The 2.5.0 release features significant enhancements and improvements to the Qt/SDL port. Specifically the debug tools and AVI recording capabilities.
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Common
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Emulation Core
+Fixed SYA and SXA opcodes in CPU. Blargg's NES CPU TEST #5 now passes.
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Qt/SDL
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New Tools
+Added built-in AVI RIFF Tree Viewer.
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Debugger
+Redesigned debugger layout to optimize space usage.
+Window layout uses relocatable tabbed viewports to allow for layout customization.
+Added a tool bar for commonly used debugger buttons.
+Moved many configuration options to debugger window menu to save space.
+Added syntax coloring options to assembly code viewer.
+Added opcode description popups to assembly code viewer.
+Added assembly code custom font selection option.
+Added symbol tool tips and address look ahead popups for assembly code viewer.
+Added navigate backwards/forwards line history to assembly code viewer.
+Added breakpoint on unlogged code/data feature.
+Added breakpoint on execution of a specified PRG-ROM address.
+Added step back one instruction feature (experimental)
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Hex Editor
+Fixed draw logic to ensure that highlighted text coloring takes precidence over activity coloring.
+Fixed crash in hex editor when searching with Ctrl+A
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Input Control
+User can now save up to 3 alternate sets of gamepad button bindings in addition to the primary set.
+Advanced gamepad bindings (to hot key functions) are now stored for each individual gamepad by GUID.
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Lua
+Build fix for static linking of lua. Ensure proper compiler flags are set for linux and mac OS to enable lua plugin functionality.
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Movies
+Added optional linking of ffmpeg (libav) libraries for AVI recording. Provides full use of available encoders and options.
+Implemented AVI 2.0 Indexing Specification. This new indexing scheme eliminates 2GB AVI file recording limitation.
+Fixed video messages and HUD presentation AVI display options.
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GUI Improvements and Bug Fixes
+Went through all debug tool windows and made sure that all configuration options are saved (persist on application restart).
+The position and size of all debug/tool windows is now saved at window close and restored at window open.
+For debug windows, if attempting to open a window that is already open, that window is raised to top and focused.
+Bug fixes for scroll bar presentation on custom viewport widgets in debug tools windows (debugger, hex editor, trace logger).
+Added main window context menu to Qt GUI.
+Various color customization options for debugger and hex editor.
+Changed hot key config window tree layout to sort keys into logical groups.
+Added offline help documentation viewer feature. (chm viewer for windows and Qt help engine for unix)
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Video Improvements and Bug Fixes
+Fixed video message positioning so that it is not clipped when 8 pixel side clipping is active.
+Added integer frame rate option to better sync video with monitor refresh.
+Changed update rate of video frames per second display so that it is more readable.
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Sound Improvements and Bug Fixes
+Added option to mute sound when main window is not in focus.
+Improved sound sample underflow/overflow algorithm to allow for better scaling with running the emulation at faster/slower speeds.
+Sound sample processing efficiency updates.
+Added an audio buffer percent usage indication and
+an audio sink starve counter to sound config window for debug purposes.
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Build Improvements
+OpenBSD OS build fixes.
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