This driver provides an interface to Cyclades Cyclom-4Y, Cyclom-8Y, Cyclom-16Y, and Cyclom-32Y asynchronous multiport serial boards. These boards are based around Cirrus Logic CD1400 communication controllers.
The device minor numbers for this driver are encoded as follows:
d c c p p p p p - bits in the minor device number
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