CIM Reference Guide

The CIM_SystemResource class described in Table below provides access to system resources from an

operating system. System resources consist of interrupt requests (IRQs) and direct memory access (DMA)

capabilities.

Table 47. CIM_SystemResource Properties

Class Name:

CIM_SystemResource

Parent Class:

CIM_LogicalElement

CIM_IRQ

The CIM_IRQ class described in Properties Table below , contains IRQ information. An IRQ is a signal that

data is about to be sent to or received by a peripheral device. The signal travels by an IRQ line to the

microprocessor. Each peripheral connection must be assigned an IRQ number. For example, the first

serial port in the computer (COM1) is assigned to IRQ4 by default.

Table 48. CIM_IRQ Properties

Class Name:

CIM_IRQ

Parent Class:

CIM_SystemResource

Property Description Data Type

CSCreationClassName See Common Properties of

Classes

string

CSName See Common Properties of

Classes

string

CreationClassName See Common Properties of

Classes

string

IRQNumber Identifies the interrupt request

number.

uint32

Availability Indicates the availability of the

IRQ. Values for the Availability

property are as follows:

1- Other

2- Unknown

3- Available

4 - In use/not available

5- In use and available

uint16

TriggerLevel Indicates if the interrupt is

triggered by the hardware signal

going high or low. Values for the

uint16