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SGI Indigo2 IMPACT and a promotional SGI espresso machine in an Indigo case Indigo2 IMPACT R10000 Badge for a Power Indigo2 with Extreme Graphics. The SGI Indigo2 (stylized as "Indigo 2") and the SGI Challenge M are Unix workstations which were designed and sold by SGI from 1992 to 1997. The Indigo2, codenamed "Fullhouse", is a desktop workstation.
Much of the hardware design can be traced back to the SGI IRIS 4D/3x series, which shared the same memory controller, Ethernet, SCSI, and optionally DSP as the IP12 Indigo. The 4D/30, 4D/35 and Indigo R3000 are all considered IP12 machines and run the same IRIX kernel. The Indigo R3000 is effectively a reduced cost 4D/35 without a VME bus.
The Silicon Graphics Indigo Elan option Graphics systems consist of four GE7 Geometry Engines capable of a combined 128 MFLOPS and one RE3 Raster Engine. Together, they are capable of rendering 180K Z-buffered, lit, Gouraud-shaded triangles per second. The framebuffer has 56 bits per pixel, causing 12-bits per pixel (dithered RGB 4/4/4) to be ...
SGI Visual Workstation is a series of workstation computers that are designed and manufactured by SGI. Unlike its other product lines, which used the 64-bit MIPS RISC architecture, the line used Intel Pentium II and III processors and shipped with Windows NT 4.0 or Windows 2000 as its operating system instead of IRIX .
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A unifying feature across all IRISes – 68K, Professional, Personal, PowerSeries, Indigo, Crimson, and Onyx – is a proprietary serial-based keyboard/mouse protocol. Earlier machines use either a DE-15 (68K, Professional, PowerSeries) or DE-9 (4D/20, /25) connector, with the later machines (4D/30, /35, Indigo, Crimson, Onyx) using a mini DIN ...
Silicon Graphics, Inc. (SGI)-made workstations, i.e., SGI's high-end computer graphics desktop machines. In much of the 1980s and 1990s, these computers were much used for producing, e.g., 3D graphics in movies.
The fourth stage is the Geometry-Raster FIFO, a first in first out (FIFO) buffer that merges the outputs of the four Geometry Engines into one, reassembling the outputs in the order they were issued. The FIFO is built from SDRAM and has a capacity of 4 MB, [ 3 ] large enough to store 65,536 vertexes .