UU(4) | Device Drivers Manual (vax) | UU(4) |
uu
— TU-58/DECtape
II UNIBUS cassette interface
options UUDMA
uu0 at uba0 csr 0176500 vector uurintr uuxintr
NOTE: This driver has not been ported from 4.4BSD yet.
The uu
device provides access to dual DEC
TU-58 tape cartridge drives connected to the UNIBUS via a DL-11W interface
module.
The interface supports only block I/O to the TU-58 cassettes (see physio(4)). The drives are normally manipulated with the arff(8) program using the ``m'' and ``f'' options.
The driver provides for an optional write and verify (read after write) mode that is activated by specifying the ``a'' device.
The TU-58 is treated as a single device by the system even though
it has two separate drives, ‘uu0
’ and
‘uu1
’. If there is more than one TU-58
unit on a system, the extra drives are named
‘uu2
’,
‘uu3
’ etc.
Assembly language code to assist the driver in handling the
receipt of data (using a pseudo-DMA approach) should be included when using
this driver; specify ‘options UUDMA
’
in the configuration file.
The following errors may be returned:
The uu
driver appeared in
4.2BSD.
February 17, 2017 | NetBSD 10.99 |