The mainboard of the AX consists of three processors. The SC12, the VS1001k and
the ATtiny15L. The VS1001k is a DSP responsible for playing MPEG1 layer 1,2,3
and RAW (wave) files. The ATtiny15L is used for decoding received infrared
codes and if neccesary turning the mainboards power on. The ATtiny15L and
infrared sensor have their own power circuit. Also the harddrive has it's own
power circuit. In some AX devices with OLED or EL there is an extra 9V or 110V
power circuit. The IDE device is 16-bits and connected using an extra logic
circuit which is then properly addresses using softare. A generic connector is
supplied for connecting most modern graphic displays with least modification.
The mainboard is as big as the red area, but the eight mounting holes make it
possible to mount the mainboard both on 2,5"* and 3,5" disks.
* This does not count for the latest 2,5" IDE disks.