FCEUX
The all in one NES/Famicom/Dendy Emulator

# FCEUX 2.6.3 Maintenance Release

07 March 2022

The 2.6.3 release is a maintenance update that fixes a few bugs for both the Win32 and Qt/SDL ports. This release features significant family keyboard emulation improvements for the Qt GUI.

## Common

### Core

FDS IRQ emulation improvement.

### Mappers

Bug fix for mapper 16 submapper 4, allow writes to address range $6000 - $600D.
Bug fix for mapper 3 bus conflict logic. Bus conflicts are now only enabled for submapper 2.
Implemented extra RAM for mapper 225.

## Win32

### Debugger

Fixed loading of saved debugger breakpoint data from previous sessions. This bug started occurring when the saved binary file format changed due to the address fields changing from 16 to 32 bit values.
Fixed bug in address validation logic.

### Input

Fixed Meta keys combination issues.

## Qt/SDL

### Input

Added a virtual family keyboard dialog window. This allows functionality such as emulating key presses via mouse and remapping keys to physical keyboard.
Added code differentiate between left/right modifier key presses (shift, alt, ctrl, meta).
Fixed keyboard bindings for Famicom family keyboard emulation.
Fixed a couple bugs for some uncommonly used Qt to SDL key code conversions.

### GUI

Fixed keyboard menu accelerator functionality for Mac OSX (non-native menu bars only)