The stable version of the 86Box emulator has been updated to 5.3.

Changelog
Emulator
 - Improved overall performance on Windows hosts by upgrading to the Universal C Runtime
 - Added asset pack for floppy drive sounds and other future features
 - Added customizable Ctrl+Alt+Page Down keyboard shortcut to show or hide the user interface in full screen mode
 - Added toolbar button, Action menu option and customizable Ctrl+Alt+I keyboard shortcut to temporarily disable the dynamic recompiler for troublesome applications
 - Added relative path conversion to disk images located next to the 86Box application or one level above the machine folder (for portable setups)
 - Fixed OpenGL renderer crashing the emulator when taking screenshots
 - Fixed emulated display resolution changes occasionally crashing the emulator
 
User interface
 - Added a toolbar with quick commands to the manager
 - Added icons to some menu entries
 - Fixed refresh rate indicator displaying inaccurate numbers when a Voodoo add-in card is active
 - Changed emulation speed indicator to be consistent across CPU frame size options
 - Updated and cleaned up many translations

Machines
 808x
  - Added real time clock I/O port and IRQ configuration to the Multitech PC-500 and PC-500 plus
  - Fixed Tandy 1000 family display shake effect used by some games
  
 286
  - Fixed extended memory support on C&T PC/AT machines
  - Fixed Amstrad PC5286 keyboard issues when a PS/2 mouse is emulated
  
 386
  - Added Socket 1 486 CPU support to the IBM PS/55 model 5550-V
  - Renamed IBM PS/55 model 5550-T to 5550-S/T Stage II
  - Renamed IBM PS/55 model 5550-V to 5550-V0/V1 and changed category to 386DX/486

 486
  - Fixed incorrect on-board video BIOS on the IBM PS/ValuePoint 433DX/Si
  
 586
  - Added Socket 5 machine: HP Pavilion 50x0/70xx
  - Added Socket 7 machines: ASUS TX97-XV, HP Pavilion 51xx/7070/7090/71xx, 52xx/53xx/71xx/72xx, 73xx/74xx
  - Added on-board Crystal CS4232 sound to the Intel Advanced/AS, Advanced/ATX and Advanced/MA
  - Added RM Accelerator 350P2XB/450P3XB BIOS variant option to the AOpen AX6BC
  - Added Award BIOS option to the MSI MS-5124 and MS-5146
  - Fixed BIOS settings for serial and parallel ports the Intel Advanced/ATX

 686
  - Added Slot 1 machine: MSI MS-6199VA (plus Compaq and Packard Bell BIOS variants)
  - Added Socket 370 machines: MSI MS-6318 (plus Elonex, Fujitsu-Siemens, HP and Medion BIOS variants), Samsung CAIRO-5
  - Added more BIOS version options to the ABIT AB-BX6
  - Added Leadtek WinFast 8000BX BIOS variant option to the Supermicro P6SBA
  - Changed maximum RAM on the AOpen AP61
  
Hardware
 Core
  - Improved CPU performance on ARM hosts, especially on MMX applications
  - Fixed specific FPU inaccuracy on ARM hosts leading to loss of sound on some Windows games
  - Fixed INC/DEC instruction legality inaccuracy

 Display
  - Improved emulation performance of Voodoo, ATI Mach64 and S3 video cards
  - Fixed VideoMagic ETW32PVS (Tseng ET4000/W32p) VLB video card not being selectable on Linux and other case-sensitive systems
  - Fixed IBM 8514/A ATI MCA variant crashing the emulator on startup on some hosts
  - Fixed incorrect refresh rates on many cards (again)
  - Fixed S3 ViRGE rendering glitches on full motion video applications (again)
  - Fixed IBM XGA rendering glitches on specific color depths
  - Fixed Matrox and Voodoo texture glitches on 3D applications
  - Fixed Voodoo Banshee/3 text rendering glitches on Linux
  - Fixed rendering issues with specific drivers on S3 9xx and Tseng ET4000/W32 cards
  - Fixed transparency glitches with more games on Voodoo cards
  - Fixed VGA scrolling behavior not matching real hardware on ATI Mach64 and Tseng ET4000/W32 cards
  - Fixed incorrect dark gray color on the IBM 5153 CGA monitor

 Input
  - Fixed XT keyboard key count option not taking effect

 Sound
  - Added Crystal CS4232 ISA sound card
  - Added OPTi 82C930 and 82C931 ISA sound cards
  - Fixed Sound Blaster 16 and AWE sound issues on some DOS games
  - Fixed incorrect default I/O port on the Covox Voice Master Key
  - Removed Raise CODEC interrupt option from Aztech Sound Galaxy cards as it is no longer required

 Ports
  - Fixed emulation hangs with serial passthrough to Windows named pipes in server mode (known issue: VMware serial ports fail to connect if 86Box is the pipe server; use VMware as the server and 86Box as the client instead)
 
 Storage
  - Improved accuracy of floppy drive sounds
  - Added a new set of floppy drive sounds
  - Added IDE CD-ROM drive models: HITACHI CDR-8435 (for the RM Accelerator 350P2XB/450P3XB (AOpen AX6BC)), TOSHIBA CD-ROM XM-6102B
  - Added SCSI CD-ROM drive models: NEC CD-ROM DRIVE:900, PLEXTOR CD-ROM PX-12CS, PX-12TS, PX-83CS, TOSHIBA CD-ROM XM-3701B
  - Fixed missing DVD support on the HITACHI GD-7500 and HL-DT-ST DVDRAM GSA-4160 CD-ROM drive models
  - Fixed Panasonic/MKE CD-ROM drives not being detected by OS/2
  - Fixed floppy drive controller inaccuracy crashing 1B/V3
  - Removed Mitsumi and Teac floppy drive sounds which could not be updated to the improved system
  
 Other
  - Added base memory backfill support to the Everex EV-159 ISA memory expansion card