• New Requirements Process
  • Advances in Industry Specifications vs. Logo Program
  • New Industry Specifications vs. Logo Program
  • Proposals for New Requirements
  • Dates for New Requirements
  • Windows Logo Program




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    Chapter 3 - Recommendations and Future Requirements


    This chapter describes the processes that Microsoft follows for adding new requirements to the Windows Logo Program for hardware. This chapter also presents specific design practices that Microsoft encourages to provide an optimal end-user experience when running Microsoft Windows operating systems.

    Note: Future requirements currently proposed for systems and devices based on industry specification advances and new capabilities planned for future Windows operating systems are defined in the “Future Requirements” sections in Appendixes A and B of this document.

    New Requirements Process


    This section summarizes the general processes by which new requirements are proposed and incorporated into the Windows Logo Program for hardware.

    New Operating System Capabilities vs. Windows Logo Program


    Microsoft presents preview information about new operating system capabilities related to the hardware platform in Design Previews. System and device manufacturers are invited to attend these private sessions, based on the degree of market involvement particular manufacturers have for the specific technologies. Presentations at Design Previews include sufficient detail for manufacturers to understand the technical requirements for implementing new support in hardware and firmware. Microsoft actively solicits manufacturers’ feedback at Design Previews, and Microsoft also provides information about Logo Program requirements proposed in relation to the new system capabilities.

    Action for New Operating System Capabilities and Logo Preview:
    If you want to request to be considered for invitation to Design Previews for specific technologies in which your company has key technical and market investments, please complete the request form at http://www.hwdev.org/EventRequest.htm

    Advances in Industry Specifications vs. Logo Program


    Microsoft works with most standards bodies for PC and server technologies, and makes plans to advance operating system support based on the current industry specifications for these technologies.

    When proposing new Logo Program requirements related to advances in existing specifications, Microsoft will survey Logo Program participants to determine when most manufacturers are intending to implement the advances.



    Action for Advances in Industry Specifications and Logo Preview:
    If you want to participate in defining or reviewing industry standards upon which operating system support is based, please join the related SIG or working groups for that technology. A list of many industry specification sources is provided at:
    http://www.microsoft.com/hwdev/specs/

    New Industry Specifications vs. Logo Program


    When new technologies are being defined and proposed for general industry adoption, Microsoft typically works with the industry consortium that is defining the hardware and firmware implementation. For example, new technologies such as ACPI and Bluetooth wireless technology are defined in industry consortia. Microsoft develops the related operating system capabilities in conjunction with development of the new specification.

    Adoption of such technologies as Logo Program requirements is usually defined in terms such as:



    If you implement Bluetooth wireless technology, comply with the industry specification and implement driver support as defined in the Windows DDKs.
    The availability of Hardware Compatibility Tests (HCTs) to validate new technologies for the Logo Program typically require good availability of new hardware at Microsoft. The Microsoft development teams require a foundation of hardware implementations in order to create and validate compatibility tests.

    Note also that it is rare for the Logo Program to define requirements such as ACPI, where the entire industry was required to change hardware/firmware support to advance PC platform capabilities. In cases where such universal changes are required, Microsoft will work within an industry consortium to define the technical standards and establish appropriate phases for implementing the new requirements in the Logo Program.



    Action for New Industry Specifications and Logo Preview:
    If you want to participate in defining new industry standard, please join the related working group. Note that typically the Logo Program does not allow driver implementations that do not follow DDK guidelines or that replace kernel Windows components.

    Proposals for New Requirements


    Proposals for new requirements are published in the Windows Logo Program newsletter, which is distributed by e-mail.

    To receive weekly notification of any Logo Program proposals, subscribe to the mail list as described at http://www.microsoft.com/winlogo/hardware/.



    Action for Comments on Future Windows Logo Requirements
    Send e-mail to hwlogo@microsoft.com. Please be sure to include your name, title, company name, and company type.

    Dates for New Requirements


    As a rule, future requirements related to operating system features go into effect when the related operating system is available and the OEM begins shipping systems that contain features supported under the new operating system. See "Windows Logo Program Dates" in Chapter 1.

    In general, Microsoft attempts to meet the following general guidelines for proposing new Logo Program requirements.



    Change required

    Advance notice

    Chipset revision

    12 - 18 months

    Driver revision

    6 months

    Firmware revision

    6 months

    For example, future Logo Program requirements related to incorporation of a new driver stack within the operating system will not be required until Microsoft provides full technology support:



    • Operating-system drivers are released.

    • DDK support is released.

    • Test kit is released by WHQL.
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