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<span class="largerfont">FCEUX<br/></span>The all in one NES/Famicom/Dendy Emulator
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<h1>FCEUX 2.6.6 Maintenance Release</h1>
<p>26 August 2023</p>
<p>
The 2.6.6 release is mainly a maintenance update for the mappers and emulation core with a few new features added in.<br>
Some of these new features apply only to the Qt/SDL version of the GUI.
</p>
<h2>Common</h2>
<h3>Mappers</h3>
Minor refactor of save game RAM code. Fixes UNROM-512 flash clearing bug during movie play.<br>
Mapper 354: Add CHR-RAM protect.<br>
Mapper 78: Add submapper support.<br>
Add mapper 174.<br>
Move mapper 205 to mapper 361/366, add proper mapper 205.<br>
Mapper 205: Fix for split-rom variant (UNIF).<br>
Mapper 227: Fix CHR-RAM protext check.<br>
Changed UNROM-512 to use 8kB of CHR RAM memory by default.<br>
Mapper 342 memory optimization.<br>
<h3>Lua</h3>
Implemented LUA function memory.registerread<br>
<h3>Core</h3>
Memory initialization settings are now also applied to nametable, palettes, and sprites.<br>
Fixed bug were write instructions didn't always update the databus.<br>
<h2>Qt/SDL</h2>
<h3>Debugger</h3>
Added ld65 debug file symbol loader feature.<br>
Added checkbox to Qt debugger menu to control trace logger auto start function on debugger open.<br>
Added code to stop the trace logger on debugger close if it was the debugger who started it in the first place.<br>
Added address validity checking to breakpoint editor dialog entry fields.<br>
<h3>Video</h3>
Added a third video driver option that uses a QPainter object to render QImages to the viewport (uses pure Qt API)<br>
Fixed video transparency issue that has been seen on some platforms (Wayland) by forcing alpha bits to be set to full opaque<br>
<h3>GUI</h3>
Added state recorder feature, periodically saves time history of game play states that can be recalled and played out from.<br>
Fixed bug regarding force grayscale or use custom palette settings change not updating PAL 3x filter appropriately.<br>
Added feature that allows loading of save state files via drag n drop file dialog operations.<br>
Fixed redundant window focus bug that would occur when attempting to open a pre-existing window.<br>
Added optional cross-platform libarchive interface to allow Qt GUI to open ROMs from 7zip archives.<br>
Minor improvements to the ROM selection from archive dialog.<br>
Improved frame scheduling timing precision.<br>
<h3>Build</h3>
Build fixes for GCC 13.<br>
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