APL and TEXT character conversion

You can use APL keyboards for all models of 3270 terminals, and TEXT keyboards for 3278 and 3279 terminals with ISPF. Figure 1 and Figure 2 show that the 2-byte transmission codes for APL and TEXT characters are converted by ISPF into 1-byte codes for internal storage.

Figure 1. Internal Character Representations for APL Keyboards
Key for major graphic.
Key for major graphic.
Grid showing the character representations for APL keyboards.
Figure 2. Internal Character Representations for Text Keyboards
Key for major graphic.
Grid showing the character representations for text keyboards.