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- Apr 15, 2018 Just did a clean install of 10 on a laptop that had 10 already on it. Device manager is showing unknown device. The device id is; ACPIvenasd&dev0001. I have searched to find what this is with confusion. I cannot figure out what driver from HP it.
- Jan 14, 2020 Get drivers and downloads for your Dell Inspiron 5555. Download and install the latest drivers, firmware and software.
- Jul 18, 2016 ThinkPad T60/T60P ACPIIBM0071 (Infrared Port) and ACPIIBM0068 (Power Management) drivers for Win/7 2016-07-17, 18:41 PM It seems that everytime I install a new Windows/7 Pro x86 or x64 system on my ThinkPad T60P 8742-AL1, I get two devices that are unknown and then I spend an hour(s) or so looking for the solutions which are generally posted.
- Download driver for ACPIASD0001 device for Windows 10 x64, or install DriverPack Solution software for automatic driver download and update. Popular Drivers. Driver version for Windows 10 x86 Driver version for Windows 8.1 x86 Driver version for Windows 8 x86 Driver version for Windows 8 x64.
Before you begin
Driver updates for Windows 10, along with many devices, such as network adapters, monitors, printers, and video cards, are automatically downloaded and installed through Windows Update. You probably already have the most recent drivers, but if you'd like to manually update or reinstall a driver, here's how:
Update the device driver
- In the search box on the taskbar, enter device manager, then select Device Manager.
- Select a category to see names of devices, then right-click (or press and hold) the one you’d like to update.
- Select Search automatically for updated driver software.
- Select Update Driver.
- If Windows doesn't find a new driver, you can try looking for one on the device manufacturer's website and follow their instructions.
Reinstall the device driver
- In the search box on the taskbar, enter device manager, then select Device Manager.
- Right-click (or press and hold) the name of the device, and select Uninstall.
- Restart your PC.
- Windows will attempt to reinstall the driver.
More help
If you can't see the desktop and instead see a blue, black, or blank screen, see Troubleshoot blue screen errors or Troubleshoot black or blank screen errors.
-->This specification defines the format of the Debug Port Table 2 (DBG2), used in platform firmware to describe the debug ports available on the system.This information applies to the following operating systems: Windows 8 and newer.
References and resources discussed here are listed at the end of this paper.
Patent Notice:Microsoft is making certain patent rights available for implementations of this specification under two options:
- Microsoft’s Community Promise, available at https://www.microsoft.com/openspecifications/en/us/programs/community-promise/default.aspx; or
- The Open Web Foundation Final Specification Agreement Version 1.0 ('OWF 1.0') as of October 1, 2012, available at http://www.openwebfoundation.org/legal/the-owf-1-0-agreements/owfa-1-0/.
Document History
Date | Change |
---|---|
November 29, 2011 | First publication. |
May 22, 2012 | Updates to Table 3 per final supported platforms for Windows 8. |
August 10, 2015 | Updated patent notice. |
October 6, 2015 | Added new serial debugging subtypes (ARM SBSA UART, ARM DCC) |
December 10, 2015 | Added new serial debugging subtype (BCM2835) |
May 31, 2017 | Added new serial debugging subtype (i.MX6, Generic Address Structure 16550-compatible) |
June 11, 2020 | Added new serial debugging subtype (SDM845v2) |
September 1, 2020 | Converted document to Markdown syntax and formatting changes. |
September 21, 2020 | Added new serial debugging subtype (IALPSS) |
Introduction
Microsoft requires a debug port on all systems. To describe the debug port(s) available on a platform, Microsoft defines an operating system–specific table (DBG2). This table specifies one or more independent ports for debugging purposes. The presence of a debug port table indicates that the system includes a debug port. The table contains information about the configuration of the debug port. The table is located in system memory with other Advanced Configuration and Power Interface (ACPI) tables, and must be referenced in the ACPI Root System Description Table (RSDT).
The DBG2 table replaces the ACPI Debug Port Table (DBGP) on platforms whose debug port implementations cannot be described using DBGP.
![Driver Driver](/uploads/1/3/4/7/134788959/759147740.jpg)
Debug Port Table 2 (DBG2)
Table 1 defines the fields in DBG2.
Table 1. Debug Port Table 2 format
Field | Byte length | Byte offset | Description |
---|---|---|---|
Header | |||
Signature | 4 | 0 | ‘DBG2’. Signature for Debug Port Table 2. |
Length | 4 | 4 | Length, in bytes, of the entire Debug Port Table 2. |
Revision | 1 | 8 | For this version of the specification, this value is 0. |
Checksum | 1 | 9 | Entire table must sum to zero. |
OEM ID | 6 | 10 | Original equipment manufacturer (OEM) ID. |
OEM Table ID | 8 | 16 | For Debug Port Table 2, the table ID is the manufacturer model ID. |
OEM Revision | 4 | 24 | OEM revision of Debug Port Table 2 for the supplied OEM Table ID. |
Creator ID | 4 | 28 | Vendor ID of utility that created the table. |
Creator Revision | 4 | 32 | Revision of utility that created the table. |
OffsetDbgDeviceInfo | 4 | 36 | Offset, in bytes, from the beginning of this table to the first Debug Device Information structure entry. |
NumberDbgDeviceInfo | 4 | 40 | Indicates the number of Debug Device Information structure entries. |
Debug Device Information Structure[NumberDbgDeviceInfo] | Variable | OffsetDbgDeviceInfo | A list of Debug Device Information structures for this platform. The structure format is defined in the Debug Device Information structure section, later in this document. |
Debug Device Information structure
Acpi Ven_asd&dev_0001 Windows 10 Driver Download
Table 2. Debug Device Information structure format
Field | Byte length | Byte offset | Description |
---|---|---|---|
Revision | 1 | 0 | Revision of the Debug Device Information structure. For this version of the specification, this must be 0. |
Length | 2 | 1 | Length, in bytes, of this structure, including NamespaceString and OEMData. |
NumberofGenericAddressRegisters | 1 | 3 | Number of generic address registers in use. |
NameSpaceStringLength | 2 | 4 | Length, in bytes, of NamespaceString, including null characters. |
NameSpaceStringOffset | 2 | 6 | Offset, in bytes, from the beginning of this structure to the field NamespaceString[]. This value must be valid because this string must be present. |
OemDataLength | 2 | 8 | Length, in bytes, of the OEM data block. |
OemDataOffset | 2 | 10 | Offset, in bytes, to the field OemData[] from the beginning of this structure. This value will be 0 if no OEM data is present. |
Port Type | 2 | 12 | Debug port type for this debug device. Each of these values will have a corresponding subtype value as shown in Table 3. |
Port Subtype | 2 | 14 | Debug port subtype for this debug device. See Table 3. |
Reserved | 2 | 16 | Reserved, must be 0. |
BaseAddressRegisterOffset | 2 | 18 | Offset, in bytes, from beginning of this structure to the field BaseaddressRegister[]. |
AddressSizeOffset | 2 | 20 | Offset, in bytes, from beginning of this structure to the field AddressSize[]. |
BaseAddressRegister[] | (NumberofGenericAddressRegisters) * 12 | BaseAddressRegisterOffset | Array of generic addresses. |
AddressSize[] | (NumberofGenericAddressRegisters) * 4 | AddressSizeOffset | Array of address sizes corresponding to each generic address above. |
NamespaceString[] | NameSpaceStringLength | NameSpaceStringOffset | Null-terminated ASCII string to uniquely identify this device. This string consists of a fully qualified reference to the object that represents this device in the ACPI namespace. If no namespace device exists, NamespaceString[] must contain a period “.”. |
OemData[] | OemDataLength | OemDataOffset | Optional, variable-length OEM-specific data. |
Acpi Ven_asd&dev_0001 Windows 10 Driver Update
Table 3. Debug port types and subtypes
Port | Type | Subtype | Description |
---|---|---|---|
Reserved | 0x0000 – 0x7FFF and 0xFFFF | All | Reserved (Do Not Use) |
Serial | 0x8000 | 0x0000 | Fully 16550-compatible |
0x0001 | 16550 subset compatible with DBGP Revision 1 | ||
0x0002 | Reserved (Do Not Use) | ||
0x0003 | ARM PL011 UART | ||
0x0004 – 0x000C | Reserved (Do Not Use) | ||
0x000D | (deprecated) ARM SBSA (2.x only) Generic UART supporting only 32-bit accesses | ||
0x000E | ARM SBSA Generic UART | ||
0x000F | ARM DCC | ||
0x0010 | BCM2835 | ||
0x0011 | SDM845 with clock rate of 1.8432 MHz | ||
0x0012 | 16550-compatible with parameters defined in Generic Address Structure | ||
0x0013 | SDM845 with clock rate of 7.372 MHz | ||
0x0014 | Intel LPSS | ||
0x0015 – 0xFFFF | Reserved (For Future Use) | ||
1394 | 0x8001 | 0x0000 | IEEE1394 Standard Host Controller Interface |
0x0001 – 0xFFFF | Reserved (For Future Use) | ||
USB | 0x8002 | 0x0000 | XHCI-compliant controller with debug interface |
0x0001 | EHCI-compliant controller with debug interface | ||
0x0002 – 0x0006 | Reserved (Do Not Use) | ||
0x0007 – 0xFFFF | Reserved (For Future Use) | ||
Net | 0x8003 | NNNN | NNNN must be a valid PCI-assigned Vendor ID |
0x8004 | All | Reserved (Do Not Use) | |
Reserved | 0x8005 – 0xFFFE | All | Reserved (For Future Use) |
Acpi Ven_asd 26dev_0001 Windows 10 Drivers
Note on the fields of the Generic Address Structure
- The Generic Address Structure in BaseAddressRegister[0] is used to specify the register bit width and access size used by some serial subtypes.
- The Address Space ID and Register Bit Offset fields must be 0.
- The Register Bit Width field contains the register stride and must be a power of 2 that is at least as large as the access size. On 32-bit platforms this value cannot exceed 32. On 64-bit platforms this value cannot exceed 64.
- The Access Size field is used to determine whether byte, WORD, DWORD, or QWORD accesses are to be used. QWORD accesses are only valid on 64-bit architectures.
Windows 10 Download
Resources
Acpi Ven_asd 26dev_0001 Windows 10 Driver Windows 7
- ACPI Specification