The X-MASS is an ATA/IDE interface for the CPC made by [[TotO]] of [[ACME]].
The device comes with a 128MB or 512MB Disk-On-Module IDE device. This is connected as master and by default the X-MASS only supports a single device.
It is possible to remove this and use with other compatible ATA devices with an adaptor provided they support 8-bit data transfer. (e.g. CompactFlash).