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- .th DP IV 8/24/73
- .sh NAME
- dp \*- DP-11 201 data-phone interface
- .sh DESCRIPTION
- The
- .it dp0
- file
- is a 201 data-phone interface.
- .it Read
- and
- .it 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.
- .sh FILES
- /dev/dp0
- .sh "SEE ALSO"
- dn (IV), gerts (III)
- .sh BUGS
-