Debian on &arch-title; currently supports two subarchitectures: SGI IP22: this platform includes the SGI machines Indy, Indigo 2 and Challenge S. Since these machines are very similar, whenever this document refers to the SGI Indy, the Indigo 2 and Challenge S are meant as well. Broadcom BCM91250A (SWARM): this is an ATX form factor evaluation board from Broadcom based on their SiByte processor family. Complete information regarding supported mips/mipsel machines can be found at the Linux-MIPS homepage. In the following, only the systems supported by the Debian installer will be covered. If you are looking for support for other subarchitectures, please contact the debian-&arch-listname; mailing list. On SGI IP22, SGI Indy, Indigo 2 and Challenge S with R4000, R4400, R4600 and R5000 processors are supported by the Debian installation system on big endian MIPS. The Broadcom BCM91250A evaluation board comes with an SB1250 chip with two SB-1 cores which are supported in SMP mode by this installer. Some MIPS machines can be operated in both big and little endian mode. For little endian MIPS, please read the documentation for the mipsel architecture.