Changes
The X-MASS is an ATA/IDE interface for the CPC made by ToTO. The device uses the same IDE I/O ports than the Symbiface 2 and is therefore compatible with it[[TotO]] of [[ACME]].
The device also has interface comes with a 128MB or 512MB 44-pin Disk-On-Module IDE device connected. It This is possible to remove this connected as master and use other compatible ATA devices. The by default the X-MASS has only supports a single device which is the master. It doesn't directly support a slave device unless an adaptor is used.
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). == Technical == The device uses the same IDE I/O ports (except for the alternative status register and drive address register) than the [[SYMBiFACE II]] and is therefore compatible with it. The port range it supports is FD08-FD0F. When the X-MASS is powered on the CPC is held in reset while the X-MASS communicates with the Disk-On-Module. If all is good the reset is released and the CPC starts up.
During this reset time the X-MASS sets the device into 8-bit PIO mode using SET FEATURES ATA command. The X-MASS device therefore requires "newer" IDE devices which support the CFA ATA mode because the 8-bit PIO is part of that command set.
The I/O ports operate in a "pass-through" like mode where the registers directly reflect those of the connected ATA device.
Like the Symbiface 2, the device should be selected with port FD0E first, then the other I/O ports can be used to program the selected device.
The I/O port is decoded fully:
1111 1101 0000 1xxx (xxx for registers 8-f)
== Software ==
At 2018 following OS's are available:<br />
- ACMEDOS - [http://www.cpc-power.com/index.php?page=detail&num=12971 Download at]<br />
- CubeIOS - [http://www.cpcwiki.eu/forum/applications/cubeios-fat16fat32-rom-for-the-cpc's-with-xmass/ Download at]<br />
- ImpDOS - [http://www.cpcwiki.eu/forum/applications/impdos-public-edition/ Download at]<br />
[[Category:Peripherals]][[Category:DATA Storage]]
Website: [http://centpourcent.net centpourcent.net]
