Internal
The HD24 operates on a Nucleus embedded real-time operating system, running on a Motorola MCF5206 EFT54 processor, which combines a Coldfire processor core with several peripheral functions such as a DRAM controller, timers, parallel and serial interfaces.
A 26-pin port on the mainboard labelled 'Motorola BDM Port' permits background debugging using a Background Debug Mode interface adaptor.
There are two IC41LV16256 chips in the HD24: according to the data sheets, they are 256kx16 bit Dynamic RAM with EDO page mode, giving the HD24 a total of 1 megabyte of RAM.
The Ethernet chip is a CrystalLan CS8900A-CQ3, a 10BASE-T LAN chip.
For recording, the original HD24 uses 12 stereo Wavefront AL1101G A/D converters, and for playback it uses 12 stereo AL1201G D/A converters. The HD24XR model uses the higher-quality AKM 5393 A/D and AKM 4393 D/A converters.
The HD24 is equipped with an Analog Devices ADSP 21065L KS-264 digital signal processor. There is an ALTERA ACEX EP1K30QC208-2 FPGA (Field Programmable Gate Array) in there as well.
The HD24 little remote control (LRC) is almost identical to older ADAT LRC's. The buttons are labeled differently, but internally the remote controls are identical: a simple resistor network.
Read more about this topic: Alesis ADAT HD24
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