Driver Package Rank Example

Consider a device that has the following lists of device identification strings, where the HwID_N and CID_N names are placeholders for actual hardware IDs and compatible IDs:

• List of hardware IDs

   HwID_1, HwID_2
  

• List of compatible IDs

  CID_1, CID_2
  

The first hardware ID in a list of hardware IDs is the most specific identifier for the device. In this example, that is HwID_1.

Also assume there is an driver package INF file that has an INF Models section that has the following entry, where the INF_XXX_N names are placeholders for actual hardware IDs and compatible IDs:

DeviceDesc1 = InstallSection1, INF_HwID_1, INF_CID_1, INF_CID_2

In addition, assume that the INF DDInstall section named InstallSection1 has the following FeatureScore directive, where the corresponding feature score of the driver is 0x00GG0000:

FeatureScore=0xGG

The following table lists the rank of each possible match between the identifiers that are reported by the device and the identifiers that are listed in the INF Models section entry. The rank is the sum of the signature score, which is represented by 0xSS000000, the feature score, which is represented by 0x00GG0000, and the identifier score, which depends, in each case, on the two identifiers that matched.

Device identifiers	Identifiers in the INF Models section entry
	INF_HwID_1	INF_CID_1	INF_CID_2
HwID_1	0xSSGG0000	0xSSGG1000	0xSSGG1000
HwID_2	0xSSGG0001	0xSSGG1001	0xSSGG1001
CID_1	0xSSGG2000	0xSSGG3000	0xSSGG3100
CID_2	0xSSGG2001	0xSSGG3001	0xSSGG3101