SGI 320/540

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Silicon Graphics 320/540 Visual Workstation are two PC models produced by SGI which are not IBM-compatible PCs. They are known for using ARC firmware, just like in NT for RISC platforms, with a graphical interface available before the actual OS is booted.


ReactOS is not ported to ARC-based SGI Visual Workstation series yet.

Both 320 and 540 use Pentium compatible CPUs so they could run ReactOS once it's ported.


SGI 320/540 use a proprietary video adapter based on Cobalt chipset. Also it has a firmware that is completely different from a Standard PC BIOS, so a new HAL should be created. Otherwise its hardware is similar to IBM PC, such as PCI bus.

In Windows 2000 there is one known HAL for this platform:

File Name HAL Name
halborg.dll SGI HAL


There are no known emulators of this platform.

See Also

ReactOS ports‎
In active development Intel IA-32 (x86) | AMD64 (x64)
In slow development NEC PC-98 (x86) | Xbox (x86)
Unmaintained ARM32 (armv7) | PowerPC (ppc) | OLPC (x86)
Missing ports that Windows has ARM64 (aarch64) | Intel IA-64 (Itanium) | SGI 320/540 (x86) | DEC Alpha (axp) | MIPS