This section describes the Card Services binding for VxD clients. The calling mechanism is the VxD service interface — any VxDs requiring access to Card Services must include PCCARD.INC. This include file contains the PCCARD service-access table that allows the client VxD to use the VxDCall macro to call Card Services.
The VxD Card Services interface is not available during system initialization. Clients should register with Card Services while processing the Init_Complete message. Clients registering at this point still have the opportunity to abort loading if Card Services is not present.
MASM version 6.x is required for the structure definitions in the Card Services interface.