Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
The VideoPortWriteRegisterUlong function writes a ULONG value to a mapped register.
Syntax
VIDEOPORT_DEPRECATED VIDEOPORT_API VOID VideoPortWriteRegisterUlong(
PULONG Register,
ULONG Value
);
Parameters
Register
Pointer to the register. The given Register must be in a mapped memory-space range returned by VideoPortGetDeviceBase.
Value
Specifies a ULONG value to be transferred to the adapter.
Return value
None
Remarks
A miniport driver's HwVidInterrupt or HwVidSynchronizeExecutionCallback function can call VideoPortWriteRegisterUlong.
Callers of VideoPortWriteRegisterUlong can be running at any IRQL, provided that the memory pointed to by the Register parameter is resident, mapped device memory.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available in Windows 2000 and later versions of the Windows operating systems. |
| Target Platform | Desktop |
| Header | video.h (include Video.h) |
| Library | Videoprt.lib |
| DLL | Videoprt.sys |
| IRQL | Any level (see Remarks section) |