READ_PORT_BUFFER_USHORT function (wdm.h)

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02/22/2024

The READ_PORT_BUFFER_USHORT routine reads a number of USHORT values from the specified port address into a buffer.

Syntax

C++

NTHALAPI VOID READ_PORT_BUFFER_USHORT(
  [in]  PUSHORT Port,
  [out] PUSHORT Buffer,
  [in]  ULONG   Count
);

Parameters

[in] Port

Specifies the port address, which must be a mapped memory range in I/O space.

[out] Buffer

Pointer to a buffer into which an array of USHORT values is read.

[in] Count

Specifies the number of USHORT values to be read into the buffer.

Return value

None

Remarks

The size of the buffer must be large enough to contain at least the specified number of USHORT values.

Callers of READ_PORT_BUFFER_USHORT can be running at any IRQL, assuming the Buffer is resident and the Port is resident, mapped device memory.

Requirements

Requirement	Value
Minimum supported client	Available starting with Windows 2000.
Target Platform	Universal
Header	wdm.h (include Wdm.h, Ntddk.h, Ntifs.h, Miniport.h)
Library	Hal.lib
IRQL	Any level (see Remarks section)

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