Guidelines for products that work well with the Microsoft® Windows® xp and Windows Server 2003 operating systems
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A4.0 Legacy-Free PC System RequirementsThis section describes additional requirements or exceptions to the requirements defined earlier in Section A1.0. A4.1 Legacy-Free PC System - Windows CompatibilityA4.1.1 ACPI legacy-free support is reported as described in "ACPI Changes for Legacy Free"Any x86-based system designs that reduce the amount of legacy ISR support in conjunction with other legacy removal efforts (such as 8042 removal) must still provide the necessary ISRs required to boot systems using BIOS. The minimum requirements include support for ISR 8h, 13h, and 19h (all functions), and ISR 15h, function E820h. To achieve this, Fixed ACPI Description Table (FADT) settings must be supported and correctly implemented, including support for reporting legacy-free and hard reset/boot capabilities, as described in the specification at http://www.microsoft.com/hwdev/tech/onnow/LF-ACPI.asp.
A4.1.2 Plug and Play detection does not report the presence of Super I/O-dependent componentsBased on addresses and exceptions listed in A4.1.3. A4.1.3 No components claim to use the restricted port addressesThe following restricted addresses are considered legacy ports and must be replaced by USB or other non-legacy equivalents: COM = 2E8-2EF, 2F8-2FF, 3E8-3EF, 3F8-3FF LPT = 278-27A, 378-37A, 3BC-3BE Sound Blaster = 0220-022F Joystick/game port = 0x200-0x20F MPU-401 (MIDI) = 0330-0331 FDC = 3F0-3F7 Keyboard/mouse controller = 0060, 0064 These ports must not be available for external connection and must not be detected by the operating system as enabled. Mobile PC Note New docking stations designed specifically for legacy-free mobile PCs must follow these requirements. The following exceptions apply: A4.1.3.8 DELETEDA4.1.3.9 Systems that use the 8042 controller internally can use the related restricted addresses if the 8042 flag is set to 1 in the ACPI FADT.The 8042 flag must be set to 0 in systems that do not include an 8042 controller. A4.1.3.10 DELETEDA4.1.3.11 DELETEDA4.1.4 Support required interruptsThe following interrupts are required. INT 8, INT 9, INT 10, INT 11, INT 13, INT 19, INT 1B, and INT 23 INT 15 subfunctions AH=C0, 4F, 87, 88 and AX=C2xx, E820, E801 INT 16 subfunctions AH=00h, 01h, 02h, 10h, 11h, 12h INT 1A subfunctions AH=0x and AX=B1xx See details in Table 2 at http://www.microsoft.com/hwdev/platform/PCdesign/LR/Lf.asp. A4.1.5 Legacy-free debug interface per Debug Port SpecificationLegacy-free systems must implement a debug solution that complies with the Debug Port Specification. This capability provides support for debugging and troubleshooting activities. A4.1.6 When 8042 is not present, A20M# is de-asserted (pulled high) or removed, with no way to mask the A20 address lineIf A20M# generation logic (8042) is not present in the system, A20M# must be terminated in a deasserted state to the processor. If 8042 is present, connect in the standard legacy manner. A4.1.7 DELETEDA4.1.8 See A1.1.4.13A4.2 Legacy-Free PC System - Industry StandardsA4.2.1 “ACPI Changes for Legacy-Free PCs”Incorporated in the current ACPI specification http://www.microsoft.com/hwdev/tech/onnow/LF-ACPI.asp A4.2.2 Debug Port Specification, V. 1.0 or laterhttp://www.microsoft.com/hwdev/platform/PCdesign/LR/debugspec.asp A4.3 Legacy-Free PC System - QualityWHQL Test Specification References: Chapter 18, Legacy-Free Test Specification See A1.3. A4.3.1 - See A4.4.9A4.3.2 - See A4.4.10A4.4 Legacy-Free PC System - Windows ExperienceDesign Guideline References: http://www.microsoft.com/hwdev/platform/PCdesign/LR/Lf.asp New docking stations designed for legacy-free mobile PCs must follow these requirements. A4.4.1 No external serial, parallel, or PS/2-compatible ports and no ISA-based game ports or MPU-401 (MIDI) ports available for external connection or detected by the operating systemSee A4.1.3 A4.4.2 See A2.4.1A4.4.3 DELETEDA4.4.4 No FDC detectedTo support migration away from legacy devices, floppy disk drives on legacy-free systems must be based on a solution other than an FDC. Solutions include: ATAPI floppy disk drive compliant with SFF-8070i, USB, IEEE 1394, PC Card, or SCSI-based floppy disk drives. A4.4.5 DELETEDA4.4.6 Peripherals provided with the system use non-legacy connectors and do not depend on real mode for installation or configurationPeripherals included with the system must offer a non-legacy interface such as PCI, USB, USB 2.0, SCSI, IEEE 1394, or CardBus. Peripherals can include both a legacy interface and a non-legacy interface. Proprietary interfaces are not acceptable. Keyboard and mouse must also use non-legacy interfaces. A4.4.7 External input devices included with the system are HID compliantAll USB keyboards, pointing devices, game pads, and their connections included with a system must comply with the USB Device Class Definition for Human Interface Devices (HID), Version 1.1, and USB HID Usage Tables, Version 1.1. This is required whether the devices are implemented as wired or wireless. A4.4.8 MS-DOS is not required to install or run any utilities, games, or other software provided with the systemA4.4.9 No BIOS boot dependencies on ISA or other legacy devices, and no ISA-related components appear on BIOS setup screenA4.4.10 BIOS supports USB input devices at boot, and does not include hardware emulation of the 8042 controller in systems where no 8042 controller is presentSee details in Table 2 at http://www.microsoft.com/hwdev/platform/PCdesign/LR/Lf.asp A4.5 Legacy-Free PC System - FAQsA4.5.1 Current general FAQsSee http://www.microsoft.com/winlogo/hardware/ A4.5.2 DELETEDA4.5.3 DELETEDA4.5.4 DELETEDA4.R Legacy-Free PC System - Future RequirementsAnnouncement of additional future requirements will be published at http://www.microsoft.com/winlogo/hardware/ |