PC Cards – (When) Will There be Support for Multifunction Cards?
Yes, the built-in PCMCIA Socket driver supports true multifunction cards as well as Dev/Multi cards (multiple devices of the same type, for example DUALIO). There is a DUALIO sample that ships in the DDK to illustrate the concept of writing a Dev/Multi driver. True Multifunction cards are handled via the PnP ID key that is obtained from the CIS structure. Note that /Dev/Multi cards need not be of the same type, it can be used for loading drivers for any multifunction card that does not meet the multifunction card specification.