As per Kale's request, I slot-ified the saturn carts, allowing for cleaner support of Backup RAM carts. Hence, you can now format your saturn 'memory card' and load/save stuff there

[Linked Image from mamedev.emulab.it]

Also, you can copy data between the internal backup memory and the external one, like in a real saturn

1. select the external memory
[Linked Image from mamedev.emulab.it]

2. select the data to copy
[Linked Image from mamedev.emulab.it]

3. it's written to the internal memory! smile
[Linked Image from mamedev.emulab.it]