RE: dds for subfiles 132 column

["Dan Bale" <dbale@xxxxxxxxxxxxx>]

Jim,

This is a classic PITA with the dual format display files.  It's extremely
rare that I work on these, but I do have a working app that uses it; since
it's been several years since I last worked on it, I won't be able to
explain why my code "makes" it work.  So experiment at your leisure (like I
did <g>).

File level:
  A                                      DSPSIZ(27 132 *DS4 -
  A                                             24 80 *DS3)

Subfile Control Records:
  A          R SFLCTL27                  SFLCTL(SFL27)
  A  *DS4                                SFLSIZ(0020)
  A  *DS3                                SFLSIZ(0008)
  A  *DS4                                SFLPAG(0020)
  A  *DS3                                SFLPAG(0008)
... later in this format:
  A  *DS3                            5 29


  A*
  A          R SFLCTL24                  SFLCTL(SFL24)
  A  69                                  DSPMOD(*DS3)
  A  *DS4                                SFLSIZ(0008)
  A  *DS3                                SFLSIZ(0008)
  A  *DS4                                SFLPAG(0008)
  A  *DS3                                SFLPAG(0008)

This seems to be all of the pertinent statements in the display file source.
I have no idea why the statement with no field displayed at 5,29 is there,
or what it does, or if it even matters.  Also, indicator 69 is NOT
referenced in the program, so it is always off, so I don't know what it is
doing or how it affects the DSPMOD keyword.  As you can surmise, I developed
separate screens for the 24x80 & 27x132 modes.

FYI for others:  To determine whether the workstation is *capable* of
27x132, I use the workstation INFDS:

d  Num_Rows             152    153B 0
d  Num_Columns          154    155B 0
d* Num_******* - Returns the size capability of the display
d*               device; either 24x80 or 27x132

Sorry I can't be of much more help with this.  Hopefully, it's enough to get
you going.

db