Silicon Graphics offers five computing and graphics options to enhance the performance of your Personal IRIS 3D graphics workstation. You can add these options at any time to new or existing Personal IRIS systems, so you can be confident that an upgrade path is always available. These products can be used individually or in any combination, extending the capability of your Personal IRIS.
CPU Performance Option
The CPU performance option provides increased power for applications requiring substantial computing performance. This option is a new single board CPU based on a MIPS RISC processor running at 20 MHz. The board also includes a floating point coprocessor and a 32KB/64KB data/instruction cache for maximum throughput. With this option the Personal IRIS is rated at 16 MIPS (VAX Dhrystone) and 1.6 Mflops (double precision) - up to 60% faster than a standard Personal IRIS.
Turbo Graphics Option
For exceptionally demanding graphics applications, the Turbo Graphics Option provides increased graphics performance. This product is a daughter board that plugs into the standard graphics board. It uses new VLSI technology to leverage the architecture of the Personal IRIS graphics pipeline, producing up to 240% performance improvement in geometry manipulation rates compared to the standard product.
The Turbo runs on 8-bit, 24-bit or 24-bit Z-buffered systems and is software compatible with the standard Personal IRIS. You can run your existing applications with substantially improved performance on the Turbo.
Entry Plus Graphics Option
Essential features for 3D solids modeling, such us hidden surface removal (Z-buffer), RGB drawing mode and hardware dithering, are provided in this low-cost graphics solution. Dithering enables 8-bit systems to increase their standard display of 256 colors to over 1 million. Applications written for 24-bit systems in RGB (double buffered) mode will run without modification on an 8-bit system with Entry Plus Graphics. This upgrade also supports applications developed using the overlay plane features.
Full Color Option
In environments such as color publishing, image processing and graphic arts, full color is essential. The Full Color Option is a user-installable daughter board that increases the number of color bitplanes in the entry-level Personal IRIS from 8 to 24. With this product the Personal IRIS can display up to 16.7 million colors. This option also increases the number of overlay/underlay and window ID planes to a total of eight.
Super Graphics Option
The flexibility of the Personal IRIS architecture permits users of 8-bit systems to upgrade to full 24-bit colour with Z-buffer capability, for true solids or simulation applications. The Super Graphics Option is a user installable kit consisting of the Full Color board and an additional Z-buffer board. Both plug into the standard graphics board and provides an 8-bit, entry-level Personal IRIS with the same full color, Z-buffered capability that comes with a Super level Personal IRIS.
The Super Graphics Option may be combined with the Turbo and CPU Performance Options for maximum performance from your Personal IRIS 3D workstation.
Entry Entry Full Super Graphics Plus Color Graphics Personal Graphics Graphics Upgrade IRIS Upgrade Upgrade or System ColorBitplanes 8 8 24 24 Z-buffer Planes 0 24 0 24 System Planes 4 8 8 8 Total Planes 12 40 32 56 Colors: RGB Mode 0 1M 16.7M 16.7M Color Index Mode 256 of 256 of 4096 of 4096 of 16.7M 16.7M 16.7M 16.7M
CPU Performance Option
Standard With CPU Personal Performance IRIS Option Processor RISC 12.5MHz RISC 20MHz MIPS 10 16 Mflops 0.9 1.6 Cache 8KB/16KB 32KB/64KB data/instruction data/instruction
Configurations 4MB Module 12MB, 16MB 16MB Module 24MB, 32MB
Turbo Graphics Option
Standard With Turbo Personal Graphics IRIS Option 3D Vectors (*) 90,000 200,000 Polygons (**) 5,000 20,000
(*) 10-pixel connected 3D vectors/second
(**) Z-buffered Gouraud shaded four-sided 10x10 pixels polygons/second
CPU Option 20MHz 32-bit RISC processor 20MHz floating point coprocessor 32KB data cache, 64KB insiruclion cache Performance: 16 MIPS (VAX Dhrystone). 1.6 Mflops (double precision Linpack coded Blas) Field upgradeable Memory Upgrade 4MB Upgrade with 1MB SIMMs (Single In-line Memory Module) 16MB Upgrade with 2MB SIMMs 100ns Parity-checking Dynamic RAM Expansion to 12, 16, 24 or 32MB Turbo Performance: 200,000 3D Vectors/second Graphics (10-pixel connected vectors) Option Performance 20,000 polygons/second (Z-buffered, Gouraud shaded, 10x10 pixel polygons) Field upgradeable Entry Plus Increases window management planes to 8 with two Graphics additional window ID planes and two overlay/underlay Option planes plus 24bit Z-buffer (total of 40 planes). RGB mode: over 1 million colors with dithering Color index mode: 256 colors from a palette of 16.7M User installable Full Color Increases total to 24 color bitplanes plus four Upgrade overlay/underlay bitplanes plus four window ID planes (total of 32 planes) RGB mode: 16.7M colors Color index mode: 4096 colors from a palette of 16.7M User installable Super Increases total to 24 color bitplanes plus four Graphics overlay/underlay bitplanes plus four system ID bitplanes Upgrade plus 24 Z-buffered bitplanes (total of 56 bitplanes) RGB mode: 16.7M colors Color index mode: 4096 colors from a palette of 16.7M User installable
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