MTS Volume 4 - Terminals and Networks (3278)

MTS 4: Terminals and Networks in MTS
FUNCTION ________
| Command: FUNCTION __ n1 m1 [n2 m2 ...]
July 1988
where "n" is a hexadecimal value identifying the key to
be redefined and "m" is the function code specifying the
function the key is to assume. Appendix B gives the
value identifying each key, the default function code for
each key, and the meaning of each function code.
Purpose: To redefine the function of a key. This command is most
useful for assigning program functions and define functions
to keys not normally used. For example, the
unshifted CTRL-1 through CTRL-7 keys can be assigned the
program functions PFA9 through PFA15, and the shifted
CTRL-1 through CTRL-7 keys can be assigned the program
functions PFB9 through PFB15. Likewise, the %FUNCTION
command may be used to assign Define Functions 26 through
31 to other keys on the keyboard. See the section "The
FUNCTION Device Command" for further details.
For example, program function PFA10 may be assigned to
the CTRL-Q key by giving the command
%FUNCTION 11 8A
In this case, 11 is the hexadecimal value identifying the
CTRL-Q key, and 8A is the function code for PFA10 (i.e.,
the hexadecimal base value 80 for PFA0, plus 0A, the
hexadecimal displacement for 10).
Any key listed in Table 1 of Appendix B can be assigned
to any function code listed in Table 2. The command
arguments are similar to those given in the above
examples, except there is no hexadecimal offset to add to
the function code as required for program functions and
define functions. For example:
%FUNCTION B3 1B
assigns the Delete Word function to the CTRL-3 key.
If "m" is omitted, the function of the key is restored to
its original default value.
One must be cautious when using this command as a mistake
in defining a key may cause a useful key to become
unavailable until the user signs off or enters the %RESET
device command. The command provides no error checking-
42 The Ontel Display Terminal: Appendix A