The X-MASS is an ATA/IDE interface for the CPC made by [[TotO]] of [[ACME]]. Released on December 25th 2014.
The device interface comes with a 128MB or 512MB 44-pin Disk-On-Module IDE device. This is connected as master and by default the X-MASS only supports a single device. [[File:X-MASS 512M.jpg]]
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).
It is possible to use SET FEATURES to put the X-MASS into 16-bit mode, but then you would only read 8 of the 16-bits of data that ATA devices often use, and you would only be able to use half the capacity of the device and you would not be able to read devices formatted on the PC for example.
In default configuration the X-MASS operates the same as the Symbiface 2 SYMBiFACE II IDE and has the same functionality.
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 2SYMBiFACE II, 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 2021 following OS's are available:<br />- ACMEDOS AcmeDOS - [http://www.cpc-power.com/index.php?page=detail&num=12971 Download at]<br />- CubeIOS BonnyDOS - [http://www.cpcwiki.eu/index.php/BonnyDOS]<br />- CubeMDOS - [http://www.cpcwiki.eu/forum/applications/cubeios-fat16fat32-rom-for-the-cpc's-with-xmass/ Download at]<br />- ImpDOS [[iMPdos]] - [http://www.cpcwiki.eu/forum/applications/impdos-public-edition/ Download at] or [http://impdos.wikidot.com/ iMPdos_HQ]<br />- [[UniDOS]] - [http://www.cpcwiki.eu/index.php/UniDOS]<br />- SymbOS - [http://www.cpcwiki.eu/index.php/SymbOS]<br /> == Website == *[http://centpourcent.net centpourcent.net]*[https://framagit.org/offset/x-mass-acepansion X-Mass ACEpansion] on Framagit*[https://wiki.osdev.org/ATA ATA documentation on OSDev Wiki]*[https://hddguru.com/documentation/ Official ATA1 (1994) to ATA8 (2006) specifications]
[[Category:Peripherals]][[Category:DATA Storage]]