This imbalance can give rise to system instability and/or a hung machine, which needs to be shut down. When the ACPI BIOS tries to access and/or modify the hardware resources at the same time as the operating system, an imbalance arises because these operations can't be synchronized. Traditionally, ACPI BIOS implementations try to manipulate hardware resources directly through BIOS code. Part of Microsoft's development of XP involved finding new ways for ACPI BIOS implementations to access and modify hardware resources.
To fully understand what's going on, let’s take a deeper look at how ACPI in the BIOS (ACPI BIOS) and in the operating system (ACPI OS) talk to each other in situations that might give rise to this error.
WINDOWS XP ERROR DRIVERS
ACPI also interacts with PnP and can help PnP routines successfully load drivers for PnP devices.Īn error such as the one above involves interaction between the BIOS and the operating system via the Hardware Abstraction Layer (HAL) driver. For example, you can configure a system to go into hibernation (sleep mode) after a preset time period, or to restore power at the touch of a button.ĪCPI has its uses on all systems, but it's particularly beneficial on laptops, where power management can be crucial. The Power Management applet, accessed in the Control Panel, lets you control power usage and power savings.
WINDOWS XP ERROR FULL
The presence of ACPI in the BIOS on a given system determines whether operating systems of the Windows 2000/XP generation can make full use of features such as Power Management and Plug and Play (PnP). The Advanced Configuration and Power Interface (ACPI) is a part of the BIOS and the operating system. I'll provide some technical background on the problem, and then I'll look at a few remedies. In this Daily Feature, I’ll examine this and other errors related to ACPI, the Advanced Configuration and Power Interface. These outcomes are usually determined by whether the system’s ACPI BIOS (AML) is compatible with XP or not. The variances between ACPI in the BIOS and in the operating system can cause different outcomes in different systems when simultaneous I/O read/write operations are attempted. They may also receive a variation of this error in the event log, referring to ports other than 0x70-0x71. This machine has suffered a fatal error and needs to be shutdown as quickly as possible. So your company just spent a bunch of money on new systems running Windows XP, yet when your users boot up, they receive this message:ĮRROR AMLI: ACPI BIOS is attempting to write to an illegal IO port address (0x70), which lies in the 0x70-0x71 protected address range.
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