Saving and loading full emulator state:
- Save (Ctrl+S): quick save to current file. Prompts for path if none selected.
- Save As (Ctrl+Shift+S): always prompts for path.
- Open (Ctrl+O): auto-detects format (.kr580 or .sav). Updates schematic and RAM table.
File path shown in status bar.
- Legacy format: Ctrl+Alt+S / Ctrl+Alt+O for .sav files.
Compatible with original emulator files.
- New file (Ctrl+N): clears RAM and registers. Warns if unsaved changes exist.
A confirmation dialog appears when opening/creating with unsaved changes.