Ymir v0.1.5 is released. A work-in-progress Sega Saturn emulator.

Features:
Load games from BIN+CUE, IMG+CCD, MDF+MDS or ISO files
Automatic IPL (BIOS) ROM detection
Automatic region switching
Up to two players with standard Control Pads on both ports (more to come)
Fully customizable keybindings
Backup RAM and DRAM cartridges (more to come)
Integrated backup memory manager to import and export saves, and transfer between internal and cartridge RAM
Save states
Rewinding (up to one minute at 60 fps), turbo speed, frame step (forwards and backwards)
A work-in-progress feature-rich debugger

GimliDS Changelog:
New features and improvements
App: Added command-line option -P to force emulator to start paused.
App: Added new Tweaks tab to Settings window consolidating all accuracy, compatibility and enhancement settings.
App: Added option to create internal backup RAM files per game. (#99)
App: Added option to override UI scale. (#251)
App: Added option to toggle fullscreen by double-clicking the display. (#197)
App: Added recent games list to File menu. (#196)
App: Automatically center Settings window when opening it. (#251)
App: Close windows when pressing B or Circle on gamepads while nothing is focused. (#251)
App: Enable gamepad navigation on GUI elements. (#251)
App: Store relative paths in Ymir.toml. (#207)
App: Use window-based DPI to adjust UI scale, allowing the UI to adapt to displays with different DPI settings. (#221; @Wunkolo)
Backup RAM: Support interleaved backup image formats such as the ones produced by Yaba Sanshiro or the MiSTer core. (#87)
Backup RAM: Support standard BUP backup files. (#87)
SCSP: Added option to increase emulation granularity for improved timing accuracy (thanks to @celeriyacon).
SCSP: Double-buffer DSP MIXS memory (thanks to @celeriyacon).
SCSP: Implemented MIDI In and Out. (#258; @GlaireDaggers)
SCSP: Interleave DSP execution and slot processing (thanks to @celeriyacon).
VDP1: Added option to replace meshes with 50% transparency.
VDP1: Clip sprites to visible area to speed up rendering, especially of very large sprites.
VDP: Added option to deinterlace video. (#66)
VDP: Added option to move VDP1 rendering to the emulator thread to improve compatibility with some games (e.g. Grandia). (#233)
Fixes
App: Fix rare crash when loading a backup memory image in the Backup Memory Manager.
App: Fix window scaling on macOS Retina displays when using HiDPI mode. (#221, #266; @Wunkolo)
App: Prevent loading internal backup memory image as backup RAM cartridge image.
CD Block: Start new playbacks from starting FAD when previous playback has ended. Fixes WipEout freeze after SEGA logo.
Media: Fix pregap handling in single BIN images.
SCSP: Apply DAC18B to output (thanks to @celeriyacon). Fixes quiet audio in many games. (#237)
SCSP: Fix loss of accuracy on MIXS send level calculation (thanks to @celeriyacon).
SCSP: Fix send level, panning and master volume calculations.
SCSP: Fix slot output processing order (thanks to @celeriyacon).
SCSP: Fix swapped DAC18B and MEM4MB bits (thanks to @celeriyacon).
SCSP: Run one additional DSP step to fix FRC issues (thanks to @celeriyacon).
SCU, SH-2, SMPC, SCSP, VDP: Numerous fixes to interrupt handling (thanks to @celeriyacon). Fixes intermittent Rayman inputs and some audio glitches.
SCU: Various DSP accuracy fixes (thanks to @celeriyacon).
SH2: More fixes to FRT, WDT and DIVU (thanks to @celeriyacon).
SMPC: Cancel scheduled command processing event when resetting SMPC. Fixes a long hang after hard resetting in some cases.
SMPC: Change fixed bits from 111 to 100 in TH/TR control mode responses for the first data byte of the Control Pad and 3D Control Pad peripherals. Fixes Golden Axe booting back to BIOS. (#231)
SMPC: Eliminate spurious INTBACK interrupts.
SMPC: Prevent COMREG writes when a command is in progress. Fixes some boot issues leading to the "Disc unsuitable for this system" message. (#219)
SMPC: Prevent optimized INTBACK report from occurring unless a continue request was sent. Fixes input issues with Yaul-based homebrew.
SMPC: Prioritize INTBACK continue requests over break requests.
System: Tighten synchronization between the two SH-2 CPUs and remove artificial timeslice limit. Improves performance and fixes Fighters Megamix and Sonic Jam intermittent boot issues. (#236, #242)
VDP1: Lower command limit to work around problematic games that don't set up a terminator in the command table. (#213, #216)
VDP1: Significantly slow down command execution when running the VDP1 renderer on the emulator thread. Fixes Dragon Ball Z - Shinbutouden freeze after SEGA logo. (#233)
VDP2: Apply horizontal mosaic effect to rotation background layer. Fixes missing effect on Race Drivin' Time Warner logo. (#267)
VDP2: Apply window effect to sprite layer. Fixes graphics going out of bounds in many games. (#173)
VDP2: Check for invalid access patterns to determine if NBG characters should be delayed. Fixes background offsets in many games. (#169, #190, #226)
VDP2: Disable NBG1-3 only if both RBG0 and RBG1 are enabled simultaneously.
VDP2: Honor access cycles and VRAM bank allocations to restrict pattern name and character pattern accesses. Fixes garbage graphics in Panzer Dragoon Saga, Sonic 3D Blast and Street Fighter Alpha/Zero 2. (#203, #213)
VDP2: Invert back screen color calculation ratio. Fixes black background on Sakura Taisen FMVs. (#241)
VDP2: Move existing VCounter into VDP2 VCNT register. Fixes Assault Suit Leynos 2 freeze when going in-game and King of Fighters '95 not booting. (#75)
VDP2: Synchronize background enable events with the renderer thread. Fixes FMV slicing issues on slow machines on Sakura Taisen.
ymdasm: Fix SCU DSP unconditional JMP disassembly.

Download: Ymir v0.1.5
Source: Here