crl(4)crl(4)Namecrl - RL02 console interface
This is a simple interface to the RL02 disk unit, which is part of the
console subsystem for the VAX 8600 (8650). Access is given to the
entire RL02 consisting of 512 cylinders of two tracks of 20 sectors of
256 bytes. The RL02 sectors are accessed as logical 512-byte disk
All I/O is raw; the seek addresses in raw transfers should be a multi‐
ple of 512 and a multiple of 512 bytes should be transferred, as in
other ``raw'' disk interfaces.
Only one ``open'' is allowed to the console RL02 device at any given
If a write is given with a count not a multiple of 512 bytes, the
trailing portion of the last logical block will be zeroed.
The primary purpose of this driver is to apply updates to the console
system disk. A ``block'' interface is not provided.
crl: hard error sn%d crlcs=0x%b, crlds=0x%b
The console subsystem has reported a hard error while performing the
requested I/O. The contains standard RLV211 control and status
information and contains standard drive status information. Bit expan‐
sion in ASCII is also provided.
crl: hndshk error
An error in communications between the console subsystem software and
the ULTRIX operating system has occurred.