NetIPC 3000/XL Programmer's Reference Manual (5958-8600)

Appendix D 213
Migration From PTOP to NetIPC and RPM
Exchanging Data
Syntax
PWRITE( dsnum , target , tcount [, itag ]
• If the slave requires a master function, send the PWRITE request
function (=3) on the virtual circuit to the slave.
• If the slave requires the requested data length, send tcount on the
virtual circuit.
• If a tag is specified, send the master tag on the virtual circuit.
• If the slave may call either ACCEPT or REJECT, receive a one byte
accept or reject indication on the virtual circuit from the slave,
Otherwise assume the slave accepted the request.
• If the slave accepted the requested, send the target data on the
virtual circuit to the slave, using the
tcount length.
• If a tag is specified, receive the slave tag from the virtual circuit.
To convert the PTOP intrinsic listed below, perform the following steps.
Syntax
PCONTROL ( dsnum [, itag ]
• If the slave requires a master function, send the PCONTROL request
function (=4) on the virtual circuit to the slave.
• If a tag is specified, send the master tag on the virtual circuit, and
receive the slave tag from the virtual circuit.
Exchanging Data: In the Slave Program
To convert the PTOP intrinsic listed below, perform the following steps.