The PlayStation Portable console emulator has been updated - PPSSPP.

What's new in 1.20.4
- Ad-hoc
 - Support for "data.json" live status from adhoc relay servers
 - RetroAchievements UI improvements around subsets
 - Assorted ad-hoc UI improvements
 - Fixes for The Warriors and Street Riders in relay mode

- Texture upscaling
 - Fix old bug causing some textures to get stuck unscales on some hardware when using GPU texture upscaling
 - Improved performance of MMPX-adv upscaler
 - NNEDI3 and Spline36 GPU texture scaling
 
- Rendering fixes
 - Fix a bug in lens flare occlusion for the Syphon Filter games
 - Fix a bug in the software renderer
 
- Misc UI improvements
 - Instant type-to-search in game browser
 - Fix file picker problems on some Android devices (regression)
 - Fix crash in text edit fields on Mac/iOS
 - PSP DVD prototypes can now load directly
 - Cheat UI has been cleaned up and supports titles and comments natively
 - RetroAchievements subset display improvements
 - Basic deep link support on iOS
 - Soft keyboard has more symbols
 
- Other
 - Fix important (but mostly rare) crash bug affecting games that draw a lot
 - More plugin zip files can now auto-install
 - Pause on lost-focus on Linux
 - Frameskipping no longer breaks analog stick auto-rotation in GoW, however manual rotation still broken
 - Android: Restore "Landscape Auto", the "Auto" screen rotation mode now overrides the user rotation lock
 - Contribution by lrzlin: Loongarch improvements
 - Basic support for extracting ISO from 7zip files
 - Fix a bug that prevented loading certain texture packs
 - Fix music looping in Death JR
 - Hide the save-load indicator in the corner by default
 - Fix crash in the remote debugger, by Nemoumbra
 - Fix screenshot cropping bug
 - mfplat.dll is no longer required on Windows unless you need camera/microphone

The Atari Jaguar console emulator has been updated - BigPEmu.

Version 1.221
- Added some cheap hash-based desync detection to the network protocol. The host will now be alerted when a desync occurs in State Sync mode. (desyncs are only known to occur when settings don't match across players or a script is causing emulation to operate non-deterministically)
- Removed unnecessary zlib dependencies from the network plugin in Linux builds. (thanks to SabreAZ for helping me test this)
- Added a -nomenubg command line option

Version 1.22
- Added a new "cheat_codes" script module. When this script module is active, the user will be prompted to toggle any available cheat codes (provided by cheat_codes.json) any time a software image is loaded. Cheat codes are provided for every cartridge and CD title in the Jaguar's retail library. Many of these cheat codes were adapted from jguff's BigPEmu scripting work, you can find the relevant scripts (and more) here: https://github.com/jguffer/BigPEmu_Scripts
- Implemented the Blitter GPU interrupt. (mainly for developers; this functionality isn't used in any retail software)
- Lots of new scripting API functionality, as well as some minor fixes/additions for existing scripts
- Reworked a bunch of BigMaster stuff under the hood. You may need to re-enter some of your BigMaster credentials when updating from a previous version of the application
- Fixed various potential bugs related to using per-game configs in network mode

The emulator GBA - NanoBoyAdvance will be updated.

- Core: Improved fast-forwarding, adding 2x, 4x and 8x options alongside infinite
- UI: Set default filter to nearest
- Platform: Upgrade to Qt 6
- Platform: Fix controller lag on macOS
- CI: Pivot Windows builds to MSVC, remove macOS Intel builds
- Remove broken links from README, remove COMPILING and move its instructions to README
- Update dependencies

What's new for v0.110b:
- Fixed ESC key to clear input
- S-DD1 emulation - other special chips are coming - we're working on a bunch right now, just that this one is ready right now
- Some Cycle consumption timing fixes
- Various emulation fixes relating to SRAM writes and ROM mirroring. (Fixes MMX copy protections)
- Added the ability to define custom paths to where you want to store your saves, .srm, .cht, and .bps files
- Added the ability to disable the last save state
- Added the ability to disable save history
- Improvements to transparency processing
- Multiple improvements to enhancement data based on feedback. We're still not there yet where we're happy with the quality of it, but we'll get there
- Added Patreon Supporters to the about box
- [Android] Add DPad touch sensitivity (movement and distance sliders)
- [Android] Fixed filename formatting in quick load
- [Android] Added icon that was missing on certain devices

The latest Sega Saturn emulator - Ymir, has been updated.

New features and improvements
- Debugger: Add Priority Stack to VDP2 debug overlay
- VDP2: Various performance optimizations to the software renderer, improving performance in graphics-bound games (especially in high resolution modes). Technical details:
 - RBG1 was being unnecessarily rendered when NBG0 was enabled and RBG1 was disabled
 - Remove redundant transparency bit since priority zero acts as transparency
 - Remove various unused function arguments, reducing CPU register and stack pressure
 - Pass down VDP2 register references as arguments rather than fetching them from scratch everywhere
 - Reuse line data (i.e. skip recomputing lines) when rendering vertical mosaic
 - Bit-pack character pattern data in a single 32-bit value
 - Microoptimize scroll coordinates calculations
 - Rotation parameter table calculations:
  - Specialize calculations for (1) no coefficient table, (2) per-line coefficient table and (3) per-dot coefficient table
  - Hoist coefficient table enable and per-dot coefficients checks out of the loop
  - Make the inner loops SIMD-friendly
  - Avoid unnecessary computation of transparency and line color screen data if they are disabled
 - Microoptimizations to the compositor function:
  - Layer sorting now uses a combined key
  - Gather layer data in one single loop
  - Pixel fetching is now templatized and some bail out checks are done earlier
  - Color offset calculation enable flag is cleared in the fetch loop if no offset is actually applied

Fixes
- Debugger: Various SH2 stack analysis fixes
- Game DB: Add slow VDP1 flag to Funky Fantasy to fix slow FMVs
- Media: Detect postgaps in data tracks when the CUE sheet doesn't explicitly announce them. Fixes audio track shifts in bad Virtua Fighter 2 dumps
- Media: Fix PREGAP/POSTGAP handling in CUE/BIN dumps. Fixes shifted audio tracks in games dumped with ImgBurn
- SH2: Fix illegal slot instruction exception handling
- VDP1: Add game-specific flag for skipping command processing if the top of the table is empty. Enable it exclusively for Sekai no Shasou kara - I Swiss-hen - Alps Tozantetsudou no Tabi. Fixes missing graphics in Gungriffon
- VDP1: Disable early polygon drawing termination when rendering polygons when user clipping mode is inverted. Fixes clipped polygons around the minimap in Machine Head
- VDP1: Implement simple infinite loop detection. Fixes slowdown in the Mojave Desert stage (1-2) in Gale Racer
- VDP2: Apply color calculations to transparent sprite mesh on layer 0. Fixes stripes on ground plane in Gungriffon
- VDP2: Apply color offset to transparent sprite mesh on layer 0 in a separate step. Fixes missing spotlight in the Colonel battle in Mega Man X4
- VDP2: Fix VRAM access calculations when RBG1 is enabled. Fix missing car graphics regression in Gale Racer
- VDP2: Fix and use line color screen calculation ratio when LNCL is inserted. Fixes text background issues in Doukoku Soshite

The latest Sega Saturn emulator - Ymir, has been updated.

New features and improvements
- App: Add command line option -F/--fast-forward to launch the emulator in fast-forward mode
- App: Always use installed mode under Flatpak
- App: Check for profile at the executable location
- App: Warn users about Flatpak filesystem permissions if the app is running in its sandbox and a disc image fails to load
- Backup RAM: Support in-memory and copy-on-write memory-mapped files in addition to regular memory-mapped files
- Build: Add simple feature flags system. All feature flags are enabled by default on development builds (including nightly builds)
- Build: Support Profile-Guided Optimization (PGO) builds
- Debugger: Allow scrolling the SH2 disassembly view
- Debugger: Colorize VRAM access timing slots in the delay viewer
- Debugger: Implement keyboard navigation and interactions in the SH2 disassembly view:
 - Up/down arrow keys: move cursor up/down one instruction
 - Page up/down: move cursor up/down one page
 - Home/end: move cursor to the top/bottom of the viewport
 - The cursor is kept below 15% of the top and above 35% of the bottom of the viewport
- Debugger: Manage SH2 breakpoints and watchpoints on the frontend and allow enabling/disabling them without removing from the list
- Debugger: Optimize SH2 breakpoints and watchpoints when debug tracing is enabled. They no longer become more expensive with the amount of entries added and the baseline cost is lower than before
- Debugger: Trace and display SH2 call stack
- Debugger: Trace and display SH2 data stack contents
- GameDB: Add new game-specific flags to improve compatibility:
 - Double the clock rate of the MC68EC000
 - Stall VDP1 drawing on VRAM writes
 - Slow down VDP1 rendering
 - Relax VDP2 bitmap CP VRAM access checks
- Input: Added support for mouse events
- Input: Capture mouse for light gun and mouse peripherals, supporting these modes:
 - System mouse: binds the system mouse cursor to a single peripheral. Mouse cursor is still available to interact with the GUI
 - Physical mouse: binds one or more mice to different peripherals. Disables the system cursor while any mice is bound.
NOTE: This option is only available on nightly builds due to issues with Virtua Gun. The System mouse capture option only works with Virtua Gun
- Input: Experimental Virtua Gun peripheral implementation
NOTE: This feature is only available on nightly builds at the moment due to issues in nearly all games. Only House of the Dead is known to work with minor reticle inaccuracy errors.
- Input: Implemented Shuttle Mouse peripheral
- MIDI: Force RtMidi to use dummy API if it fails to initialize, allowing Ymir to run without MIDI drivers
- Save states: Added actions to undo a save state and restore an undone save state
- Save states: Store one extra save state per slot for undo
- Settings: Show currently loaded profile path in Settings > General
- System: You can now select a preferred system variant (Saturn, HiSaturn, V-Saturn or Dev Kit) and Ymir will automatically pick a matching IPL ROM
- Video: Add option to enable/disable video synchronization in full screen mode
- Video: Allow selecting full screen resolution and target display
- Video: Allow switching graphics backends for GUI rendering

Fixes
- Build: Introduced separate x64-win-llvm toolchains for SSE2 and AVX2 support. Fixes Windows SSE2 builds requiring SSE4.2 instructions
- Build: Perform ad-hoc signature on macOS binaries to work around the "damaged" app warning
- Build: Remove duplicate binary from macOS packages
- GameDB: Double the MC68EC000 clock rate and force fast bus timings to fix crashes in Vampire Savior - The Lord of Vampire
- GameDB: Force-enable SH2 cache emulation to fix issues with multiple games:
 - Baku Baku Animal - World Zookeeper Contest (Europe only) -- freeze when trying to play FMVs from the Options menu
 - Chisato Moritaka - Watarase Bashi and Lala Sunshine -- crash at startup
 - Dragon Ball Z - Idainaru Dragon Ball Densetsu -- black screen after starting a new game
 - Emit Vol. 3 - Watashi ni Sayonara o -- FMV tearing
 - Metal Fighter Miku -- black screen after start menu
 - Spot Goes to Hollywood -- glitched graphics in European version only
 - Steamgear Mash -- flickering graphics
 - Waku Waku 7 -- flickering sprites
- GameDB: Force fast bus timings to fix crashes in Deep Fear
- GameDB: Slow down VDP1 to fix no-boot regression in Jikkyou Oshaberi Parodius
- GameDB: Slow down VDP1 to fix performance issues in Fishing Koushien II
- Input: Fixed analog to D-Pad axis conversion to not overwrite whenever an input was released in opposite direction
- MIDI: Defend against crashes when the library fails to initialize
- SCU: Timer fixes
- SH2: Block interrupts on instructions following LDC/LDS/STC/STS
- SH2: Cache emulation fixes
- SH2: Fix @(disp.PC) loads being decoded as stores for watchpoints
- SH2: Fix ldc/lds @Rm decoding from the wrong opcode bits for watchpoints
- SH2: Interrupt prioritization and triggering fixes
- VDP1: Fix handling of zero horizontal character size in CMDSIZE
- VDP1: Fix swap framebuffers race condition with threaded VDP1 rendering. Fixes flickering graphics in multiple games:
 - Actua Golf
 - FIFA - Road to World Cup 98
 - Gran Chaser
- VDP1: Increase PTM=1 drawing delay and apply it only during VBlank. Fixes flickering graphics on Earthworm Jim 2
- VDP1: Properly load save state data when threaded VDP1 rendering is enabled
- VDP1: Rework cycle counting method and increase cycle budget per frame. Fixes slowdowns in Road Rash and graphics glitches in multiple games, including Virtua Cop and Burning Rangers
- VDP1: Stall VDP1 drawing on VRAM writes exclusively on Mega Man X3 and Rockman X3 to fix garbled sprites
- VDP1: Stop processing commands if encountering an all-zeros entry. Fixes invalid clipping coordinates in Sekai no Shasou kara - I Swiss-hen - Alps Tozantetsudou no Tabi
- VDP2: Apply VRAM access shift per bank to scroll NBGs with invalid timing patterns. Fixes World Heroes Perfect title screen shift and Cyberbots - Fullmetal Madness HUD shift and broken background in stage 2
- VDP2: Clear normal shadow flag on transparent sprite pixels. Fixes shadows extending vertically across the screen in Tokyo Shadow
- VDP2: Compute vertical cell scroll delays/offsets when enabling/disabling the effect in addition to access cycle changes
- VDP2: Consolidate sprite data handling and fix 16-bit readout of 8-bit sprite data. Fixes garbled graphics in NBA Live 98 in-game
- VDP2: Convert the "allow bitmap data access during SH-2 cycles" hack into a game-specific flag and enable it only for games that display issues with the strict timing checks:
 - Lunar - Silver Star Story
 - Mechanical Violator Hakaider
 - Shin Kaitei Gunkan
- VDP2: Fix and optimize per-dot coefficient access checks. Fixes graphics glitches in Radiant Silvergun when starting a new game after interrupting the AKA-O boss fight in attract mode
- VDP2: Fix NBG per dot special priority calculations. Fixes priority issues in Mr. Bones
- VDP2: Illegal scroll CP accesses cause a shift if there aren't enough valid accesses in other banks and the illegal accesses occurs in the same bank as the PN access. Fixes fog background shift in Sonic 3D Blast
- VDP2: Illegal scroll CP accesses in low-res modes are handled differently between T0-T3 and T4-T7. Fixes gaps in backgrounds in X-Men vs. Street Fighter
- VDP2: Multiple VC accesses in the same timing slot do not cause extra delays. Fixes FMV glitches in Girls in Motion Puzzle Vol. 1 - Hiyake no Omoide + Himekuri
- VDP2: Sprite special pattern detection was short by one bit
- VDP2: Use only the first PN access to check for valid CP accesses. Fixes graphics shift in Daisuki and BattleSport