Each distinct ARM architecture requires its own kernel. Because of this the standard Debian distribution only supports installation on a number of the most common systems. The Debian userland however may be used by any ARM CPU including xscale. Most ARM CPUs may be run in either endian mode (big or little). However, almost every current system implementation uses little-endian mode. Debian currently only supports little-endian ARM systems. The commonly supported systems are Netwinder This is actually the name for the group of machines based upon the StrongARM 110 CPU and Intel 21285 Northbridge. It comprises of machines like: Netwinder (possibly one of the most common ARM boxes), CATS (also known as the EB110ATX), EBSA 285 and Compaq personal server (cps, aka skiff). Bast This is a modern ARM 920 board with a 266MHz Samsung processor. It has integrated IDE, USB, Serial, Parallel, audio, video, flash and two ethernet ports. This system has a good bootloader which is also found on the CATS and Riscstation systems. RiscPC This machine is the oldest supported hardware: it was released in 1994. It has RISC OS in ROM, Linux can be booted from that OS using linloader. The RiscPC has a modular CPU card and typically has a 30MHz 610, 40MHz 710 or 233MHz Strongarm 110 CPU fitted. The mainboard has integrated IDE, SVGA video, parallel port, single serial port, PS/2 keyboard and proprietary mouse port. The proprietary module expansion bus allows for up to eight expansion cards to be fitted depending on configuration, several of these modules have Linux drivers. Riscstation This is an inexpensive 56MHz 7500FE based machine with integrated video, IDE, PS/2 keyboard and mouse and two serial ports. Its lack of processing power was made up for by its price. It may be found in two configurations one with RISC OS and one with a simple bootloader. LART This is a modular open hardware platform intended to be built by enthusiasts. To be useful to install Debian it requires its KSB expansion board.