Win32_DMAChannel, ROOT\CIMV2

Class | Methods | Properties (19) | Qualifiers (5) | Instances (1) | Namespaces (2)
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Description

The Win32_DMAChannel class represents a direct memory access (DMA) channel on a Win32 computer system. DMA is a method of moving data from a device to memory (or vice versa) without the help of the microprocessor. The system board uses a DMA controller to handle a fixed number of channels, each of which can be used by one (and only one) device at a time.

Win32_DMAChannel properties

Win32_DMAChannel has 19 properties (1 Local, 18 Derived)

NameOriginCIMType
AddressSizeCIM_DMA18 [uint16]
AvailabilityCIM_DMA18 [uint16]
BurstModeCIM_DMA11 [boolean]
ByteModeCIM_DMA18 [uint16]
CaptionCIM_ManagedSystemElement8 [string]
ChannelTimingCIM_DMA18 [uint16]
CreationClassNameCIM_DMA8 [string]
CSCreationClassNameCIM_DMA8 [string]
CSNameCIM_DMA8 [string]
DescriptionCIM_ManagedSystemElement8 [string]
key
DMAChannel
CIM_DMA19 [uint32]
InstallDateCIM_ManagedSystemElement101 [datetime]
MaxTransferSizeCIM_DMA19 [uint32]
NameCIM_ManagedSystemElement8 [string]
PortWin32_DMAChannel19 [uint32]
StatusCIM_ManagedSystemElement8 [string]
TransferWidthsCIM_DMA18 [uint16]
TypeCTimingCIM_DMA18 [uint16]
WordModeCIM_DMA18 [uint16]

Detailed description of Win32_DMAChannel properties

Local properties (1) of Win32_DMAChannel class

Port property
CIMTYPE'uint32'
Description'The Port property specifies the DMA port used by the host bus adapter. This is meaningful for MCA-type buses.
Example: 12'
MappingStrings['Win32API|System Structures|CM_PARTIAL_RESOURCE_DESCRIPTOR|Dma|Port']
readTrue
Port property is in 1 class (Win32_DMAChannel) of ROOT\cimv2 and in 20 namespaces

Derived properties (18) of Win32_DMAChannel class

AddressSize property
CIMTYPE'uint16'
Description'An integer indicating the DMA channel address size in bits. Permissible values are 8, 16, 32 or 64 bits. If unknown, enter 0.'
MappingStrings['MIF.DMTF|System Resource DMA Info|001.3']
readTrue
Units'bits'
ValueMap['0', '8', '16', '32', '64']
AddressSize property is in 2 classes of ROOT\cimv2 and in 2 namespaces
Availability property
CIMTYPE'uint16'
Description'The Availability property indicates the availability of the DMA.'
MappingStrings['MIF.DMTF|DMA|001.2']
readTrue
ValueMap['1', '2', '3', '4', '5']
Values['Other', 'Unknown', 'Available', 'In Use/Not Available', 'In Use and Available/Shareable']
Availability property is in 108 classes of ROOT\cimv2 and in 12 namespaces
BurstMode property
CIMTYPE'boolean'
Description'Indicate whether the DMA channel supports burst mode'
MappingStrings['MIF.DMTF|DMA|001.3']
readTrue
BurstMode property is in 2 classes of ROOT\cimv2 and in 2 namespaces
ByteMode property
CIMTYPE'uint16'
Description'Indicates whether DMA may execute in 'count by byte' mode (value=4) or not (value=3). Also, "Other" (1) and "Unknown" (2) may be defined.'
MappingStrings['MIF.DMTF|System Resource DMA Info|001.7']
readTrue
ValueMap['1', '2', '3', '4']
Values['Other', 'Unknown', 'Not execute in 'count by byte' mode', 'Execute in 'count by byte' mode']
ByteMode property is in 2 classes of ROOT\cimv2 and in 2 namespaces
Caption property
CIMTYPE'string'
Description'The Caption property is a short textual description (one-line string) of the object.'
MaxLen64
readTrue
Caption property is in 1050 classes of ROOT\cimv2 and in 37 namespaces
ChannelTiming property
CIMTYPE'uint16'
Description'DMA channel timing. For example, "Type A" (value =4) or "Type F" (6) could be specified.'
MappingStrings['MIF.DMTF|System Resource DMA Info|001.9']
readTrue
ValueMap['1', '2', '3', '4', '5', '6']
Values['Other', 'Unknown', 'ISA Compatible', 'Type A', 'Type B', 'Type F']
ChannelTiming property is in 2 classes of ROOT\cimv2 and in 2 namespaces
CreationClassName property
CIM_KeyTrue
CIMTYPE'string'
Description'CreationClassName indicates the name of the class or the subclass used in the creation of an instance. When used with the other key properties of this class, this property allows all instances of this class and its subclasses to be uniquely identified.'
MaxLen256
readTrue
CreationClassName property is in 178 classes of ROOT\cimv2 and in 20 namespaces
CSCreationClassName property
CIM_KeyTrue
CIMTYPE'string'
Description'The scoping computer system's creation class name.'
MaxLen256
Propagated'CIM_ComputerSystem.CreationClassName'
readTrue
CSCreationClassName property is in 27 classes of ROOT\cimv2 and in 2 namespaces
CSName property
CIM_KeyTrue
CIMTYPE'string'
Description'The scoping computer system's name.'
MaxLen256
Propagated'CIM_ComputerSystem.Name'
readTrue
CSName property is in 28 classes of ROOT\cimv2 and in 2 namespaces
Description property
CIMTYPE'string'
Description'The Description property provides a textual description of the object. '
readTrue
Description property is in 1061 classes of ROOT\cimv2 and in 142 namespaces
DMAChannel property
CIMTYPE'uint32'
Description'A part of the object's key value, the DMA channel number.'
keyTrue
MappingStrings['MIF.DMTF|DMA|001.1']
readTrue
DMAChannel property is in 2 classes of ROOT\cimv2 and in 2 namespaces
InstallDate property
CIMTYPE'datetime'
Description'The InstallDate property is datetime value indicating when the object was installed. A lack of a value does not indicate that the object is not installed.'
MappingStrings['MIF.DMTF|ComponentID|001.5']
readTrue
InstallDate property is in 227 classes of ROOT\cimv2 and in 23 namespaces
MaxTransferSize property
CIMTYPE'uint32'
Description'The maximum number of bytes that can be transferred by this DMA channel. If unknown, enter 0.'
MappingStrings['MIF.DMTF|System Resource DMA Info|001.4']
readTrue
Units'bytes'
MaxTransferSize property is in 2 classes of ROOT\cimv2 and in 2 namespaces
Name property
CIMTYPE'string'
Description'The Name property defines the label by which the object is known. When subclassed, the Name property can be overridden to be a Key property.'
readTrue
Name property is in 1046 classes of ROOT\cimv2 and in 142 namespaces
Status property
CIMTYPE'string'
Description'The Status property is a string indicating the current status of the object. Various operational and non-operational statuses can be defined. Operational statuses are "OK", "Degraded" and "Pred Fail". "Pred Fail" indicates that an element may be functioning properly but predicting a failure in the near future. An example is a SMART-enabled hard drive. Non-operational statuses can also be specified. These are "Error", "Starting", "Stopping" and "Service". The latter, "Service", could apply during mirror-resilvering of a disk, reload of a user permissions list, or other administrative work. Not all such work is on-line, yet the managed element is neither "OK" nor in one of the other states.'
MaxLen10
readTrue
ValueMap['OK', 'Error', 'Degraded', 'Unknown', 'Pred Fail', 'Starting', 'Stopping', 'Service', 'Stressed', 'NonRecover', 'No Contact', 'Lost Comm']
Values['OK', 'Error', 'Degraded', 'Unknown', 'Pred Fail', 'Starting', 'Stopping', 'Service', 'Stressed', 'NonRecover', 'No Contact', 'Lost Comm']
Status property is in 230 classes of ROOT\cimv2 and in 42 namespaces
TransferWidths property
CIMTYPE'uint16'
Description'An array indicating all the transfer widths (in bits) supported by this DMA Channel. Permissible values are 8, 16, 32, 64 or 128 bits. If unknown, enter 0.'
MappingStrings['MIF.DMTF|System Resource DMA Info|001.2']
readTrue
Units'bits'
ValueMap['0', '8', '16', '32', '64', '128']
TransferWidths property is in 2 classes of ROOT\cimv2 and in 2 namespaces
TypeCTiming property
CIMTYPE'uint16'
Description'Indicates whether C type (burst) timing is supported (value=5) or not (value=4). Also, "Other" (1), "Unknown" (2) and "ISA Compatible" (3) are defined.'
MappingStrings['MIF.DMTF|System Resource DMA Info|001.10']
readTrue
ValueMap['1', '2', '3', '4', '5']
Values['Other', 'Unknown', 'ISA Compatible', 'Not Supported', 'Supported']
TypeCTiming property is in 2 classes of ROOT\cimv2 and in 2 namespaces
WordMode property
CIMTYPE'uint16'
Description'Indicates whether DMA may execute in 'count by word' mode (value=4) or not (value=3). Also, "Other" (1) and "Unknown" (2) may be defined.'
MappingStrings['MIF.DMTF|System Resource DMA Info|001.8']
readTrue
ValueMap['1', '2', '3', '4']
Values['Other', 'Unknown', 'Not execute in 'count by word' mode', 'Execute in 'count by word' mode']
WordMode property is in 2 classes of ROOT\cimv2 and in 2 namespaces

Win32_DMAChannel Qualifiers

NameValueToInstanceToSubclassOverridableAmendedLocal
Description'The Win32_DMAChannel class represents a direct memory access (DMA) channel on a Win32 computer system. DMA is a method of moving data from a device to memory (or vice versa) without the help of the microprocessor. The system board uses a DMA controller to handle a fixed number of channels, each of which can be used by one (and only one) device at a time.'
dynamicTrue
Locale1033
provider'CIMWin32'
UUID'{8502C4D1-5FBB-11D2-AAC1-006008C78BC7}'

Win32_DMAChannel System properties

NameValueOriginCIMTypeLocalArray
__PATH'\\.\ROOT\cimv2:Win32_DMAChannel'___SYSTEM8
__NAMESPACE'ROOT\cimv2'___SYSTEM8
__SERVER'.'___SYSTEM8
__DERIVATION['CIM_DMA', 'CIM_SystemResource', 'CIM_LogicalElement', 'CIM_ManagedSystemElement']___SYSTEM8
__PROPERTY_COUNT19___SYSTEM3
__RELPATH'Win32_DMAChannel'___SYSTEM8
__DYNASTY'CIM_ManagedSystemElement'___SYSTEM8
__SUPERCLASS'CIM_DMA'___SYSTEM8
__CLASS'Win32_DMAChannel'___SYSTEM8
__GENUS1___SYSTEM3
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