This section describes the PCMCIA_INTERFACE_STANDARD interface routines provided by the system PCMCIA bus driver in Microsoft Windows 2000 and later operating systems. PCMCIA memory card drivers can call these routines to perform the following operations:

• Modify the attributes of the memory window that is mapped by the PCMCIA bus driver
• Set the Vpp (secondary power source) level for the device
• Determine if the card memory is write-protected

To obtain pointers to these interface routines, a driver sends the PCMCIA bus driver an IRP_MJ_PNP request that specifies a IRP_MN_QUERY_INTERFACE minor function. The bus driver returns the interface information in a PCMCIA_INTERFACE_STANDARD structure. For more information about how to obtain a PCMCIA_INTERFACE_STANDARD interface, see PCMCIA_INTERFACE_STANDARD Interface for Memory Cards.