DU
Section: Devices and Network Interfaces (4)
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NAME
du, dp - DU-11 201 data-phone interface
DESCRIPTION
The
dp0
file
is a 201 data-phone interface.
Read
and
write
calls
to dp0
are limited to a maximum of 512 bytes.
Each write call is sent as a single record.
Seven bits from each byte
are written along with an eighth odd parity
bit.
The sync must be user supplied.
Each read call returns characters received from a
single record.
Seven bits are returned unaltered; the eighth bit
is set if the byte was not received in odd parity.
A 10 second time out is set and a zero-byte
record is returned if nothing is received in that time.
FILES
/dev/dp0
SEE ALSO
dn(4)
BUGS
The name
dp0
is a historical dreg.
Index
- NAME
-
- DESCRIPTION
-
- FILES
-
- SEE ALSO
-
- BUGS
-
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