ACC Utilities Reference Guide

40 Chapter2
TTGEN-ZCOMSystemTableGenerator
Creating the TTGEN Configuration File
Logical-Size
The size in bytes of an LTT extension area. An extension area can be
associated with a logical terminal table (LTT). The extension area, if
present, would appear at the end of the LTT (hence, the total LTT size
would be “size of system data” (ZCOM area and user -maintainable area)
plus “size of extension area”. Currently, LTT system data (ZCOM area
and user-maintainable area) is 400 bytes). Only one Logical-Size value
can be defined in your TTGEN configuration file. Thus, there is only one
extension-area size for all LTTs. This also means that if you define a
Logical-Size, then every LTT will have an extension area. Logical-Size
defaultsto 0 (i.e., no extension).Define any value as needed (or just leave
it out for a default of zero, i.e., no extension). The valid range of values is
0or8…2048(ZCOM_MAXLSIZEin /opt/acc/include/zcom/zcomsys.h),
and the value must be a multiple of 8.
Logical-Data
This parameter enables application programs to reserve some of the
spare data area (of the terminal information) for a group of terminals. It
is defined according to the application number (as set up i n the TERM or
LTERM parameters). There may be up to 20 Logical-Data statements.
Note that Logical-Size must be defined first.
The following information is required if this parameter is specified:
Logical-Data <appln> <label> <offset> <size>
<appln> the application number of the terminals for which the
space is reserved. Using 0 (zero) reserves space for all
the terminals, regardless of their application number.
<label> the name (up to 7 characters) for the reserved space -
this name must be different for each Logical-Data
statement.
<offset> the offset of the reserved space within the spare data
area. This field starts from 0 up to (Logical-Size -1),in
multiples of 8.
<size> the number of bytes, in multiples of 8, to be reserved