The device minor numbers for this driver are encoded as follows:
bits meaning
---- -------
ppppp physical serial line (i.e. port) to use:
0-3 on Cyclom-4Y
0-7 on Cyclom-8Y
0-15 on Cyclom-16Y
0-31 on Cyclom-32Y
cc card unit number; note this limits the driver to
four cards per system
d set to use as a dial-out line
d c c p p p p p - bits in the minor device number
Additional debugging output can be enable with the kernel configuration option CY_DEBUG. Diagnostic counters may be enabled with the kernel configuration option CY_DEBUG1.