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.