Pathway/iTS System Management Manual (G06.24+)

Setting the DISPLAY-PAGES Parameter

HP NonStop Pathway/iTS System Management Manual—426748-002

F-2

Determining the DISPLAY-PAGES Value

The correct value of the DISPLAY-PAGES parameter depends on the application

being run. An inappropriate value for DISPLAY-PAGES can result in the following

consequences:

•

If the value of DISPLAY-PAGES is too large, there will not be enough room in the

terminal’s field-attribute area for all the field-attribute entries. This causes the

terminal to abort with the terminal error ALL FIELDS USED.

•

If the value of DISPLAY-PAGES is too small, the terminal’s RAM will not be used

to its full capacity. Consequently, performance is not as good as it could be

because the number of screens that could be recalled is not at its maximum.

The factors that determine the correct value for the DISPLAY-PAGES parameter are

the number of field-attribute entries per screen definition, and terminal capacity. The

information in the following paragraph helps you estimate the number of field-attribute

entries. The tables in the remainder of this section help you match terminal type to the

average number of field-attribute entries to determine the appropriate DISPLAY-

PAGES value. Using the appropriate DISPLAY-PAGES value allows a terminal to

achieve its highest performance level without exceeding its fixed amount of RAM.

Figure F-1. RAM Organization Within a Terminal

Screen A

Field-Attribute Entries Area: Screen A

Field-Attribute Entries Area: Screen B

Terminal Random Access Memory (RAM)

Screen-Image Area Field-Attribute Entries Area

Screen B

Screen C

Field-Attribute Entries Area: Screen C

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