Pathway/iTS SCREEN COBOL Reference Manual (H06.10+, J06.03+)
Environment Division
HP NonStop Pathway/iTS SCREEN COBOL Reference Manual—426750-003
4-4
OBJECT-COMPUTER Paragraph
INTELLIGENT-1
specifies block mode. WRITE and READ I/O protocol: write to a device and
then read from the device in block mode.
INTELLIGENT-2
specifies block mode. WRITEREAD I/O protocol: write to a device and wait
for a reply in block mode.
INTELLIGENT
specifies that the PATHCOM SET TERM TYPE parameter determines
conversational or block mode. If INTELLIGENT is specified but no PATHCOM
SET TERM TYPE parameter is specified, the default is conversational mode.
The syntax for PATHCOM to enable these settings is given under the description of
the SET TERM command in the
HP NonStop Pathway/iTS System Management
Manual
.
Selecting INTELLIGENT-0 is appropriate if the device is to be placed in
conversational mode and the device is configured to communicate with a Compaq
access method for NonStop systems, such as SNAX or X25AM. If INTELLIGENT-
0 is selected and the TCP runs a SEND MESSAGE statement without a REPLY
phrase, only a WRITE is issued to the device. If INTELLIGENT-0 is selected and
the TCP runs a SEND MESSAGE statement without data, a WRITEREAD with a
write count of 0 is issued.
Selecting INTELLIGENT-1 is appropriate if it is desired to have the device in block
mode and the device is configured to communicate with a Compaq access method
for NonStop systems, such as SNAX or X25AM. If INTELLIGENT-1 is selected
and the TCP runs a SEND MESSAGE statement without a REPLY phrase, a
READ is not issued. If INTELLIGENT-1 is selected and the TCP runs a SEND
MESSAGE statement without data, a WRITE is not issued.
Selecting INTELLIGENT-2 is appropriate if it is desired to have the device in block
mode and the device is configured such that other processes are simultaneously
requesting data from it. If this is the case, the WRITEREAD protocol guarantees
that each reply is returned to its intended requester. If INTELLIGENT-2 is selected
and the TCP runs a SEND MESSAGE statement without a REPLY phrase, a
WRITE is issued. If INTELLIGENT-2 is selected and the TCP runs a SEND
MESSAGE statement without data, a READ is issued.
When communicating with Guardian user processes, INTELLIGENT-0 or
INTELLIGENT-2 should be used in order to invoke a WRITEREAD call to
communicate with the process.
CHARACTER-SET IS
specifies a character set other than USASCII. This clause can be used only with
terminal types IBM-3270, T16-6530, and T16-6540. For other terminal types, the
USASCII character set is assumed. If specified, this clause must follow the