NdisQueryMapRegisterCount

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 MapRegisterCount is 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

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.

 Last updated on Tuesday, July 13, 2004

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