PCMCIA help

I want to write driver on a PCMCIA card, but in DDK,
i can’t find any examples?? either in DDK document, all i find is
in Chapter “System support bus”, and it only mention a little about
PCMCIA, i’m not so smart guy to figure out the whole pciture!

Can someone tell me where can i find other useful information about a
PCMCIA driver.

Thanks a lot,

swchen