ISPF-to-APL2 terminal type mappings provides information about how to add or change mappings, if you need to do so. See z/OS ISPF Dialog Developer's Guide and Reference for a description of the ISPF/APL2 terminal type dialog, ISPAPTT.

ISPAPTT consists of an 8-character header (with value ISPAPTT), and fifteen 20-character entries. Each 20-character entry contains three fields. All fields are left-justified and padded on the right with blanks.

• The first 13 entries each appear as follows:
  • A 4-character EBCDIC sequence number; for example, “0001,” “0002”
  • An 8-character EBCDIC ISPF terminal type
  • An 8-character EBCDIC APL2® terminal type
• The 14th entry consists of:
  • A 4-character EBCDIC sequence number; for example, “0014”
  • An 8-character EBCDIC value of “BATCH” noting the ISPF terminal type used if executing in the background (dialog ISPAPTT looks for this value)
  • An 8-character EBCDIC value of “1” noting the APL2 terminal type to be used if executing in the background
• The last (15th) entry contains:
  • A 4-character EBCDIC value equal to “LAST”
  • An 8-character value composed of all hexadecimal Fs, indicating the end of the list (dialog ISPAPTT looks for this value)
  • An 8-character EBCDIC value of “3277” indicating the APL2 terminal type to be used if the ISPF terminal type is not found in the list

You can change any of these values by performing a zap of the module. Include the APL2 terminal type to use in the background, and the APL2 terminal type to use if the ISPF terminal type is not found in the list.

Several of the first 13 entries can be changed to allow new terminal types. These entries contain a 4-character EBCDIC sequence number followed by 16 characters (two 8-character areas) of binary zeros. To change these entries use a zap and enter the ISPF terminal type into the first 8-character area, and the corresponding APL2 terminal type into the second 8-character area.