These devices support the same API as the generic SCSI
devices.
+ 97 block Packet writing for CD/DVD devices
+ 0 = /dev/pktcdvd0 First packet-writing module
+ 1 = /dev/pktcdvd1 Second packet-writing module
+ ...
+
98 char Control and Measurement Device (comedi)
0 = /dev/comedi0 First comedi device
1 = /dev/comedi1 Second comedi device