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This function returns the maximum number of available map registers in the current platform.
NDIS_STATUS NdisQueryMapRegisterCount( IN NDIS_INTERFACE_TYPE BusType , OUT PUINT MapRegisterCount );
Parameters
- BusType
- Specifies the I/O bus interface type of the caller's busmaster
DMA network adapter, which usually is the type of I/O bus on which
the network adapter is connected, as one of the following:
Value Description NdisInterfaceInternal Specifies a host-specific internal interface. NdisInterfaceIsa Specifies the ISA interface. NdisInterfacePci Specifies the Peripheral Component Interconnect (PCI) interface. NdisInterfacePCMcia Specifies the Personal Computer Memory Card International Association (PCMCIA) interface. - MapRegisterCount
- Pointer to a caller-supplied variable in which this function
returns the maximum number of map registers available to the
caller.
Return Values
Returns NDIS_STATUS_SUCCESS if the value at MapRegisterCountis valid. Otherwise, it returns NDIS_STATUS_NOT_SUPPORTED.
Remarks
Currently, Windows CE does not support direct memory access (DMA). The Windows CE version of this function is a stub that does no work. When Windows CE does support DMA, this function will be more fully developed.
Requirements
Runs on Versions Defined in Include Link to Windows CE OS 2.0 and later Ndis.h Ndislib.lib Note This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.