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The Ymir Git emulator for Sega Saturn, released on May 31, 2026, is still in development and offers a range of features. Users can load games from multiple file formats (e.g., BIN+CUE, ISO), with automatic BIOS detection and region switching. It supports multiplayer, customizable keybindings, and offers features like save states, rewinding, and turbo speed. The emulator includes a backup memory manager for save transfers and a debugger with various enhancements. Recent updates have fixed issues in SH2 operations and improved debugging tools while also updating the list of Patreon supporters.
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Ymir Git (2026/05/31) has been released. This is an ongoing project for a Sega Saturn emulator.
Features:
Support for loading games from BIN+CUE, IMG+CCD, MDF+MDS, or ISO files
Automatic detection of IPL (BIOS) ROM
Seamless region switching
Multiplayer support for up to two players using standard Control Pads on both ports (more features on the way)
Completely customizable keybindings
Support for Backup RAM and DRAM cartridges (more enhancements to come)
Built-in backup memory manager for importing and exporting saves, as well as transferring between internal and cartridge RAM
Save state capability
Rewind features (up to one minute at 60 fps), turbo speed, and frame stepping (both forwards and backwards)
An ongoing development of a feature-rich debugger
Ymir Changelog:
* fix(debug): Utilize the probe to retrieve instructions for SH2 disassembly view and improve cache usage
* fix(SH2): Correct 8-bit and 16-bit read/write operations in cache address array and associative purge areas
* feat(debug): Introduce colors for SH2 register labels
* fix(SH2): Nullify SSH2 spillover cycles to prevent negative counts when a breakpoint is triggered
* feat(app): Include options to toggle game name and performance indicators on the window title bar
* fix(debug): “Reattach” SH2 tracers when loading states to refresh/reset tracer states
* fix(debug): Enable full expansion of SH2 Data Stack view to utilize available space when Call Stack is hidden
* chore: Refresh Patreon supporters list
* fix(debug): Correct SINIT area base address in memory viewer
