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IS4910 D
EVICE
Registry Settings
The registry settings allow to load and to configure the driver. The driver must be properly configured on
the target device in order to work properly. For that purpose the driver reads the configuration parameters
from the registry during loading. The driver's registry values must be stored under the
[HKLM\RootKey\DriverKey] key, where RootKey is a string value defined under the [HKLM\Drivers]
key and DriverKey is an arbitrary string which names the driver dedicated subkey. If the RootKey is not
defined, it defaults to Drivers. But traditionally RootKey is Drivers\BuiltIn. The name of the driver's
subkey is arbitrary, but it should be unique among the direct subkeys of [HKLM\RootKey]. For example
good choice for the DriverKey is IS4910.
The following table shows the relevant registry values under the driver's subkey. First four values in the
table are the basic entries used by the Device Manager under Windows CE in order to load the driver.
And the other values are the driver-specific entries used to configure the driver and initialize its operating
parameters.
Value
Prefix
Dll
Index
Order
SysIntr
DMAChannel
MaxMemFrames
26
D
RIVER
Type
Defines the three-letter name of the driver. Must be VUQ. The
STRING
device name is constructed from the Prefix value appended the
Index number.
Specifies the name of the DLL that implements the driver
STRING
(vuqdrv.dll)
(Optional) Defines the instance number of the device and can be
a single decimal digit starting from 1 (first instance) to 9 (ninth
DWORD
instance) and 0 (tenth instance). The Index number is appended
to the Prefix value to construct the device name. Default is 1.
(Optional) Specifies the order in which the driver should be
loaded and ranges from 0 through 255. The drivers with lower
DWORD
Order values are loaded before drivers with higher Order values
in the registry.
(Optional) Specifies the system interrupt number corresponding
DWORD
to the quick capture interface IRQ. If it's not defined the driver
would request the IRQ-to-SYSINTR mapping.
(Optional) Specifies the DMA channel to be used by the driver
DWORD
for DMA operations. If it's not defined then the first found free
DMA channel would be used.
(Optional) Specifies the maximum number of frames the image
DWORD
buffer can hold. Default is 4.
Description
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