Snapshots (Save States)
Snapshots, also often called Save States, are a representation of the entire machine state which can be saved or restored at any time. With snapshots you can virtually eliminate the need to rely on in-game checkpoints to save your progress. Save a snapshot, and load it up again later and it's as if you had just kept on playing.
Please be aware that snapshots are a brand new feature. While this feature works reliably in my testing, there may be some bugs. There are some caveats to be aware of.
Snapshots are saved to the hard disk image that you started xemu with.
Before restoring a snapshot, you should:
If using the monitor, load your game disc image as normal. Loading a snapshot from the monitor will not re-mount the game disc, so if you load a snapshot and the game then tries to read from disc, it will fail. Launch xemu, load your game disc, then restore the snapshot. Loading a snapshot from the UI will prompt to remount the disc, so this step is not needed.
Connect controllers to match the saved configuration. For instance: if there was a controller connected to Port 1 when the snapshot was created, make sure there is a controller connected to Port 1 before loading the snapshot. If this configuration does not match, an error message will be displayed and the machine will be paused. Simply connect the appropriate controllers, load the snapshot again, and enter
contin the monitor to continue).
Using the UI¶
The snapshots interface is available in the settings menu, available under Machine → Snapshots.
From here, snapshots can be filtered either by the current title, or game, being played, or by entering part of the snapshot name. In addition, snapshots can be created or overwritten.
The snapshot list shows each snapshot, along with some information, in descending order of most recent creation date.
By right-clicking on a snapshot, or using the left gamepad button, the snapshot can be loaded, bound to a key, replaced, or deleted.
When bound, pressing the corresponding F# key will load the snapshot at any time. Pressing Shift + F# will save over the snapshot. These keys will have no effect when no snapshot is bound to them, so you must first bind a snapshot before you can use them.
For quick access, snapshots can also be created directly from the Machine → Snapshot submenu. Keyboard-bound snapshots can also be saved or loaded from this menu.
Snapshots can also be created from the pop-up menu, and the pop-up menu has a quick-access button to enter the snapshots settings page.
Using the Monitor¶
After you have launched your game in xemu, open the Monitor window by navigating to Debug → Monitor.
- Save a snapshot: Enter the command
savevm my-snapshot, where
my-snapshotis a name you can give to this snapshot
- List snapshots: Enter the command
- Restore a snapshot: Enter the command
- Delete a snapshot: Enter the command