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  2. Illegal opcode - Wikipedia

    en.wikipedia.org/wiki/Illegal_opcode

    While most accidental illegal instructions have useless or even highly undesirable effects (such as crashing the computer), some can have useful functions in certain situations. Such instructions were sometimes exploited in computer games of the 1970s and 1980s to speed up certain time-critical sections.

  3. Microsoft Product Activation - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Product_Activation

    If activation is not performed within the grace period or fails because of an illegal or invalid product key, the following restrictions will be imposed on the user: In Windows XP , Windows Server 2003 , and Windows Server 2003 R2 , after a grace period of 30 days, the operating system cannot be used at all until the activation process is ...

  4. Device driver - Wikipedia

    en.wikipedia.org/wiki/Device_driver

    Virtual devices may also operate in a non-virtualized environment. For example, a virtual network adapter is used with a virtual private network, while a virtual disk device is used with iSCSI. A good example for virtual device drivers can be Daemon Tools. There are several variants of virtual device drivers, such as VxDs, VLMs, and VDDs.

  5. CPUID - Wikipedia

    en.wikipedia.org/wiki/CPUID

    The user-state items are enabled by setting their associated bits in the XCR0 control register, while the supervisor-state items are enabled by setting their associated bits in the IA32_XSS (0DA0h) MSR - the indicated state items then become the state-components that can be saved and restored with the XSAVE/XRSTOR family of instructions.

  6. The Imaginary Invalid - Wikipedia

    en.wikipedia.org/wiki/The_Imaginary_Invalid

    The Imaginary Invalid, The Hypochondriac, or The Would-Be Invalid (French title Le Malade imaginaire, [lə malad imaʒinɛːʁ]) is a three-act comédie-ballet by the French playwright Molière with dance sequences and musical interludes (H.495, H.495 a, H.495 b) by Marc-Antoine Charpentier.