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sgi indigo wikipedia 127 captures 30 jan 2005 31 aug 2026 sep oct nov 19 2021 2022 2023 success fail about this capture timestamps the wayback machine http web archive org web 20221019141734 https en wikipedia org wiki sgi_indigo sgi indigo from wikipedia the free encyclopedia jump to navigation jump to search workstations family by silicon graphics this article has multiple issues please help improve it or discuss these issues on the talk page learn how and when to remove these template messages this article relies largely or entirely on a single source relevant discussion may be found on the talk page please help improve this article by introducing citations to additional sources find sources sgi indigo news newspapers books scholar jstor january 2012 this article needs additional citations for verification please help improve this article by adding citations to reliable sources unsourced material may be challenged and removed find sources sgi indigo news newspapers books scholar jstor october 2019 learn how and when to remove this template message this article includes a list of general references but it lacks sufficient corresponding inline citations please help to improve this article by introducing more precise citations october 2019 learn how and when to remove this template message learn how and when to remove this template message silicon graphics indigo also known as sgi iris indigo developer sgi type 3d graphics workstation release date 1991 discontinued 1995 predecessor sgi iris 4d successor sgi indigo2 sgi crimson sgi indigo front sgi indigo back the indigo introduced as the iris indigo is a line of workstation computers developed and manufactured by silicon graphics inc sgi sgi first announced the system in july 1991 1 the indigo is considered by whom one of the most capable graphics workstations of its era and was essentially peerless in the realm of hardware accelerated three dimensional graphics rendering for use as a graphics workstation the indigo was equipped with a two dimensional framebuffer or for use as a 3d graphics workstation with the elan graphics subsystem including one to four geometry engines ges sgi sold a server version with no video adapter the indigo s design is based on a simple cube motif in indigo hue graphics and other peripheral expansions are accomplished via the gio 32 expansion bus the indigo was superseded generally by the sgi indigo2 and in the low cost market segment by the sgi indy contents 1 technical specifications 2 graphics options 2 1 entry graphics 2 2 xs graphics 2 3 xz graphics 2 4 elan graphics 3 operating system 4 sgi timeline 5 references 6 external links technical specifications edit the first indigo model code named hollywood was introduced on july 22 1991 it is based on the ip12 processor board which contains a 32 bit mips r3000a microprocessor soldered on the board and proprietary memory slots supporting up to 96 mb of ram the later version code named blackjack is based on the ip20 processor board which has a removable processor module pm1 or pm2 containing a 64 bit mips r4000 100 mhz or r4400 processor 100 mhz or 150 mhz that implements the mips iii instruction set the ip20 uses standard 72 pin simms with parity and has 12 simm slots for a total of 384 mb of ram at maximum a motorola 56000 dsp is used for audio io giving it 4 channel 16 bit audio ethernet is supported on board by the seeq 80c03 chipset coupled with the hpc high performance peripheral controller which provides the dma engine the hpc interfaces primarily between the gio bus and the ethernet scsi wd33c93 chipset and the 56000 dsp the gio bus interface is implemented by the pic processor interface controller on ip12 and mc memory controller on ip20 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 pic supports a vme expansion bus used on the 4d 3x series and gio expansion slots used on the indigo in all ip12 ip20 and ip22 ip24 see sgi indigo2 systems the hpc attached to the gio bus graphics options edit entry graphics edit for entry graphics the 8 bit color frame buffer 2 comes in three versions one version uses the system s gio expansion bus another uses the main backplane like the xs xz and elan graphics options the final is the same but adds a second video output giving the computer the ability to have two heads or monitors xs graphics edit the indigo s xs graphics option has a single ge7 geometry engine ge a re3 raster engine a hq2 command engine vc1 xmap5 it is ideal for low cost wireframe operations compared to more powerful and expensive options for textured graphics 2 part of sgi s express line of graphics four xs graphics options were produced for the indigo the xs 8 offers 8 bit color with one vm2 video ram module the xs z adds the zb 4 z buffer the xs 24 adds two vm2 modules and offers 24 color bits and 32 bits including brightness and the xs 24z adds a z buffer xz graphics edit the xz graphics option is also a member of sgi s express graphics line it is similar to the xs 24z but it includes a second ge7 geometry engine asic doubling its geometry performance elan graphics edit the highest performance graphics option offered for the indigo it is a member of sgi s express graphics line it is like the xs 24z and xz but has 4 ge7 geometry engine asics giving it twice the performance of the xz option operating system edit the indigo was designed to run irix sgi s version of unix the indigos with r3000 processors are supported up to irix version 5 3 and indigo equipped with an r4000 or r4400 processor can run up to irix 6 5 22 additionally the free unix like operating system netbsd has support for both the ip12 and ip20 indigos as part of the sgimips port 3 sgi timeline edit references edit sgistuff net hardware systems indigo www sgistuff net retrieved 2021 07 11 a b archived copy archived from the original on 2019 04 12 retrieved 2014 09 20 cite web cs1 maint archived copy as title link netbsd sgimips wiki netbsd org retrieved 2021 07 11 external links edit ip12 linuxmips technolust the indigo page silicon graphics sgi sgi indigo silicon graphics r4000 architecture indigo power supply basics preceded by sgi iris 4d personal sgi iris 4d personal succeeded by sgi indy sgi iris indigo 1991 1995 preceded by sgi iris 4d professional succeeded by sgi indigo2 v t e silicon graphics company silicon graphics 1981 2009 silicon graphics international 2009 2016 people kurt akeley rick belluzzo david j brown james h clark paul haeberli herb kuta abbey silverstone computer architectures motorola 68000 sgi iris former models mips iris 4d indigo indigo² and challenge m indy crimson o2 octane challenge onyx origin 200 origin 2000 onyx2 origin and onyx 3000 fuel tezro ia 32 itanium x86 64 visual workstation altix prism virtu graphics hardware geometry engine elan extreme impact vpro realityengine infinitereality irisvision reality coprocessor monitors 1600sw other technology irix image format mex workspace 4sight interactive desktop xsgi 4dwm xfs iris gl opengl openldi gio xio numalink nintendo 64 authority control national libraries germany retrieved from https en wikipedia org w index php title sgi_indigo oldid 1104126499 categories sgi workstations 32 bit computers 64 bit computers hidden categories pages using the easytimeline extension cs1 maint archived copy as title articles with short description short description matches wikidata articles needing additional references from january 2012 all articles needing additional references articles needing additional references from october 2019 articles lacking in text citations from october 2019 all articles lacking in text citations articles with multiple maintenance issues articles with specifically marked weasel worded phrases from november 2021 articles with gnd identifiers navigation menu personal tools not logged in talk contributions create account log in namespaces article talk english views read edit view history more search navigation main page contents current events random article about wikipedia contact us donate contribute help learn to edit community portal recent changes upload file tools what links here related changes upload file special pages permanent link page information cite this page wikidata item print export download as pdf printable version languages čeština deutsch español italiano русский suomi edit links this page was last edited on 12 august 2022 at 21 13 utc text is available under the creative commons attribution sharealike license 3 0 additional terms may apply by using this site you agree to the terms of use and privacy policy wikipedia is a registered trademark of the wikimedia foundation inc a non profit organization privacy policy 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