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Document ECG026/0498
W
P
HITE
APER
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simultaneously, with peripherals such as monitors and keyboards acting as additional plug-in sites
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or hubs.
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USB peripherals can include telephones, modems, keyboards, mice, CD-ROM drives, joysticks,
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tape and floppy drives, scanners, and printers. USB has a 12 Mbits/sec data rate, compared to
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115.2Kbits/sec for serial ports and 2Mbits/sec for enhanced parallel ports. This speed can
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accommodate a new generation of peripherals, including MPEG-2 (compressed data) video based
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products and digitizers.
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Drawing its intelligence from the host workstation, USB can detect when devices are added and
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removed. USB automatically determines what host resource each peripheral requires, including
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driver software and bus bandwidth, and makes those resources available without user
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intervention.
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Currently, there are different ways to implement USB. The Compaq Professional Workstation
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5100 implements the OpenHCI USB interface. OpenHCI reduces CPU overhead for USB devices
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compared to other implementations and is fully compatible with UniversalHCI.
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Currently, Microsoft NT Workstation 4.0 does not support USB, but future versions are expected
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to include USB drivers that will allow the workstation to recognize USB peripherals.
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The Workstation Software Platform
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The workstation software platform is consistent across all workstation products including the
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Professional Workstation 5100, the Compaq Professional Workstation 6000, and the Compaq
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Professional Workstation 8000. As a result, customers can rely on a single software platform to
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deploy any Compaq workstation product.
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The table below highlights the enhancements to the workstation software platform that were made
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since the introduction of the Professional Workstations 5000. For a complete overview of the
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software platform, please refer to the Compaq Professional Workstation Software Platform White
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Paper.
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Table 11: Compaq Professional Workstations Software Comparison Chart
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Software Features
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Operating System
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Microsoft Windows NT Workstation 4.0
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Microsoft Windows 95
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Microsoft Windows NT Workstation 3.51
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SunSoft Solaris 2.5
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UNIX / NT Interoperability
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NFS Client
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PC-X Server
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PC-X Server OpenGL 3D
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23
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CPW
CPW
5100
6000
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
CPW
8000
ü
ü
ü
ü
ü
ü
ü
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