A6.1 Server System - Windows Compatibility

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A6.1 Server System - Windows Compatibility

A6.1.1 – See A1.1

A6.1.2 If legacy components have been removed, system includes correct FADT table entries and necessary ISR support for boot

System designs that remove legacy (port 60h/port 64h) keyboard controllers, typically implemented using 8042 or similar controllers, must meet these requirements to function with Windows. Specifically, these systems must properly set Fixed ACPI Description Table Boot Architecture Flags as described in the ACPI specification and ACPI Specification Changes for Legacy Free, as described at http://www.microsoft.com/hwdev/tech/onnow/LF-ACPI.asp.

System designs that reduce the amount of legacy ISR support in conjunction with other legacy removal efforts (such as 8042 or 60h/64h keyboard controller removal) must still provide the necessary ISRs required to boot x86-based systems using BIOS. The minimum requirements include support for ISR 8h, 13h, and 19h (all functions), and ISR 15h, function E820h.