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Ymir Git (2026/05/28) is a work-in-progress Sega Saturn emulator featuring functionalities like loading games from various file formats (BIN+CUE, ISO, etc.), automatic BIOS detection, and region switching. It supports two players with standard control pads, customizable keybindings, and backup RAM management. Additional features include save states, rewinding up to one minute at 60 fps, turbo speed, and frame stepping. Recent updates include improvements to vertical and horizontal phases, bug fixes for DMAC burst reading, and enhancements to the screenshot workflow. The emulator continues to evolve with a feature-rich debugger in development.
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Ymir Git (2026/05/28) has been released. It’s an ongoing project for a Sega Saturn emulator.
Key Features:
Supports loading games from BIN+CUE, IMG+CCD, MDF+MDS, or ISO files
Automatic detection of IPL (BIOS) ROM
Automatic region switching
Multiplayer capability for up to two players using standard Control Pads on both ports (more features to come)
Fully adjustable keybindings
Backup support for RAM and DRAM cartridges (more features to come)
Integrated memory manager for importing and exporting saves, and transferring between internal and cartridge RAM
Save states
Rewinding (up to one minute at 60 fps), turbo speed, frame stepping (both forwards and backwards)
A developing, feature-rich debugger
Ymir Changelog:
* chore(VDP2): Expose vertical and horizontal phases while using blanking/sync as the frame execution stop point
* chore: Rename the callback `Rebind` to `Bind` for better clarity in binding callbacks within the app
* fix(SH2): DMAC 16-byte burst should now read 4 longwords followed by writing 4 longwords
* build: Correct references in screenshotter workflow
* build: Isolate screenshotter task into its own file for reuse in nightly and stable release workflows
* build: Standardize naming for all jobs
* build: Reference secrets and capture response body on errors
