DMC(4)
NAME
dmc − DEC DMC-11/DMR-11 point-to-point communications device
SYNTAX
device dmc0 at uba0 csr 167600 vector dmcrint dmcxint
DESCRIPTION
The dmc interface provides access to a point-to-point communications device which runs at either 1 Mb/s or 56 Kb/s. DMC-11’s communicate using the DEC DDCMP link layer protocol.
The dmc interface driver also supports a DEC DMR-11 providing point-to-point communication running at data rates from 2.4 Kb/s to 1 Mb/s. DMR-11’s are a more recent design and thus are preferred over DMC-11’s.
The host’s address must be specified with an SIOCSIFADDR ioctl before the interface will transmit or recive any packets.
DIAGNOSTICS
dmc%d: bad control %o. A bad parameter was passed to the dmcload routine.
dmc%d: unknown address type %d. An input packet was received which contained a type of address unknown to the driver.
DMC FATAL ERROR 0%o.
DMC SOFT ERROR 0%o.
dmc%d: af%d not supported. The interface was handed a message which has addresses formatted in an unsuitable address family.