Pathway/iTS Management Programming Manual

ZPWY-MAP- Definitions
NonStop Pathway/iTS Management Programming Manual—426749-002
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ZPWY-MAP-DEF-TERM
ZDIAGNOSTIC
specifies whether diagnostic screens are displayed to inform the application user
when an error condition or termination occurs. ZDIAGNOSTIC can have the
following values:
The SCREEN COBOL special register DIAGNOSTIC-ALLOWED is initialized to
YES or NO according to the value of this parameter. Screen recovery is invoked
following the display of a diagnostic screen.
If you do not assign a value to this field, the default is ZPWY-VAL-ON.
ZDISPLAYPAGES
specifies the depth of the terminal’s screen caching. ZDISPLAYPAGES determines
the maximum number of screen displays stored in the terminal’s memory. If you do
not assign a value to this parameter, the default is used. If you specify a value
greater than the defined maximum, the defined maximum is used.
You select the appropriate value for ZDISPLAYPAGES based on the following
application-dependent information, as well as the specific terminal type:
•
The maximum number of fields per screen declared in the SCREEN COBOL
program
•
The average number of fields per screen the terminal type can handle for the
particular setting of ZDISPLAYPAGES
Terminal memory is divided into two separate areas: the screen image area and
the field attribute area. The ZDISPLAYPAGES field determines how much terminal
memory is used for screen images as opposed to how much is used for field
ZPWY-VAL-OFF Specifies that the diagnostic screens should not be displayed.
ZPWY-VAL-ON Specifies that the diagnostic screens should be displayed.
The first DISPLAY BASE statement in the SCREEN COBOL
program must have executed before this option can cause a
diagnostic screen to appear.
Terminal Type Default Value Defined Minimum Defined Maximum
T16-6540 7 1 16*
T16-6530WP 7 1 8*
T16-6530 7 1** 8*
T16-6520 3 1** 3
IBM-3270 1 1 1
TS530 8 1 8*
*This is the absolute maximum allowed for the TCP. However, if the terminal or terminal emulator has less
memory, the working value is negotiated downward.
**Although the Pathway subsystem allows you to set the number of pages to 1, some terminals or terminal
emulators do not allow that setting. For example, the T16-6520 terminal always sets its number of display
pages to 3, regardless of the user setting.