.pa 1 .he 'DP (IV)'3/15/72'DP (IV)' .ti 0 NAME dp -- dp-11 201 data-phone interface .sp .ti 0 DESCRIPTION dp?___ is a 201 data-phone interface file. read____ and write_____ calls to dp?___ are limited to a maximum of 400 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 20 second time out is set and a zero byte record is returned if nothing is received in that time. .sp .ti 0 FILES /dev/dp0 201 dataphone used to call GCOS .sp .ti 0 SEE ALSO dn(IV), gerts(III) .sp .ti 0 BUGS The dp__ file is GCOS oriented. It should be more flexible.