nf-miniport-read_port_ulong.md

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NF:miniport.READ_PORT_ULONG	READ_PORT_ULONG function (miniport.h)	The READ_PORT_ULONG function (miniport.h) returns a ULONG value that is read from the specified port address in resident, mapped device memory.	kernel\read_port_ulong.htm	kernel	04/30/2018	READ_PORT_ULONG function	READ_PORT_ULONG, READ_PORT_ULONG routine [Kernel-Mode Driver Architecture], k103_04794cc7-88eb-4456-8613-6fcf9947ebe4.xml, kernel.read_port_ulong, wdm/READ_PORT_ULONG	miniport.h	Wdm.h, Ntddk.h, Ntifs.h, Ioaccess.h, Miniport.h	Universal	Available starting with Windows 2000.											Hal.lib		Any level (see Remarks section)	Windows		READ_PORT_ULONG miniport/READ_PORT_ULONG	APIRef kbSyntax	LibDef	Hal.lib Hal.dll	READ_PORT_ULONG

READ_PORT_ULONG function (miniport.h)

-description

The READ_PORT_ULONG routine reads a ULONG value from the specified port address.

-parameters

-param Port [in]

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

-returns

READ_PORT_ULONG returns the ULONG value that is read from the specified port address.

-remarks

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