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pccard — PC Card bus driver
The pccard driver implements the PC Card bus. The pccard driver supports
all PC Card bridges in the system.
The driver supports the following tunable parameters, which may be added
to /boot/loader.conf or set via the sysctl(8) command:
hw.pccard.debug Non-zero values cause more verbose information to be
printed when a 16-bit PC Card is inserted or
hw.pccard.cis_debug Non-zero value causes the CIS parsing of the 16-bit
PC Card to be much more verbose and include a
complete CIS dump.
/dev/pccard0.cis This exclusive-use device will report all the CIS
chains present in a PC Card, if a 16-bit PC Card is
inserted in the slot. Only one user at a time may
access the CIS. The CIS is presented as the relevant
byte stream from the PC Card. For CIS tuples in
Attribute Memory (the default), only the even locations
are presented (the ODD locations are undefined per the
standard). For CIS tuples in Common Memory, every byte
is presented to the user. Decoding of the CIS tuples
is done via a userland program. All tuples are
presented to the user.
PC Card Standard, Release 8.