MIPS Magnum
The MIPS magnum is largely based on the inhouse Microsoft JAZZ boards that Microsoft used to develop Windows NT.
They used an EISA bus, MIPS R4000 cpu's and had a simple frame buffer, and were equiped with a NCR 53C9X scsi bus.
The MIPS cpu boots up in little endian mode, and then depending on the firmware will either continue booting (ARC), or would reset into big endian mode. Most of the UNIX ports used the big endian mode. The Magnum, and all RISC workstations that were supported by Windows NT all needed a FAT system partition, in which the boot loader was stored.
Operating Systems
The Magnum could run these OS's out of the factory
Additionally there have been ports of NetBSD,OpenBSD & Linux to the Magnum.
Emulation
Qemu can emulate a magnum, it can even run the ARC firmware. There is a custom build out there that can even run Windows NT. See Installing Windows NT 4.0 on Qemu(MIPS) for more details.
