iTS 1.0+)

Environment Division

Compaq NonStop™ Pathway/iTS SCREEN COBOL Reference Manual—426750-001

4-3

OBJECT-COMPUTER Paragraph

communicates with an intelligent device. If the TERMINAL IS clause is omitted,

the program is assumed to be a screen-oriented requester program operating in block

mode; the requester program can run on any of the block mode terminal types listed

for a screen-oriented requester program. However, features unique to a particular

terminal cannot be used if the TERMINAL IS clause is omitted.

For a screen-oriented requester program you can specify the type of terminal for

which the requester program is intended and the type of communication, block mode

or conversational.

T16-6510

T16-6520

T16-6530

T16-6540

specify the particular terminal operating in block mode.

•

Program units compiled for a T16-6520 terminal can be run on a T16-6530

or T16-6540 terminal.

•

Program units compiled for a T16-6530 can be run on a T16-6540.

•

Program units compiled for one terminal type and run on another terminal

type can use only those features available for the compiled terminal type.

IBM-3270

specifies an IBM 3270 type terminal operating in block mode.

CONVERSATIONAL

denotes any of the following terminals operating in conversational mode: 6510,

6520, 6530, or 6540 type terminals, IBM 3270 type terminals, or any other

device that the operating system recognizes as operating in conversational

mode.

Features unique to terminal types in block mode are not recognized for the same

terminal types in conversational mode.

For Intelligent Device Support (IDS), the message-oriented requester program can

communicate with AM3270, SNAX, TERMPROCESS, AM6520, X25AM, or a

Guardian operating environment process. The TERMINAL IS clause specifies

whether the terminal communicates in conversational mode or block mode.

INTELLIGENT-0

specifies conversational mode. WRITEREAD I/O protocol: write to a device

and wait for a reply in conversational mode.

INTELLIGENT-1

specifies block mode. WRITE and READ I/O protocol: write to a device and

then read from the device in block mode.