VT100 emulation under NOS

Controlling VT100 emulation and full screen mode

To activate VT100 emulation mode and turn on full screen mode under NOS, use the command:

   SCREEN,VT100.

To return to line mode, use the command:

   LINE,VT100.

Using VT100 functions keys

All function keys are generated using the (emulated) VT100 keypad, and all function keys must be followed by RETURN on the main keyboard to get processed. After typing a function key, spurious characters will show up on the display until the RETURN key has been processed. Typing a shifted function key actually means typing a different key (SF1 to SF9 instead of F1 to F9) on the VT100 keypad. To activate a function keys several times in a row, type that key the desired number of times before pressing RETURN.

Layout of the VT100 keypad under NOS

SF1
PF1
NumLock
SF2
PF2
/
SF3
PF3
*
SF4
PF4
-
F7
7
7
F8
8
8
F9
9
9
SF5
-
Ctrl-+
F4
4
4
F5
5
5
F6
6
6
SF6
,
+
F1
1
1
F2
2
2
F3
3
3
SF7
Enter
Enter
SF9
0
0
SF8
.
.

Legend of keys:

NOS function key
Key on VT100
Key on PC keypad

Note: actual mapping of the keys between PC keypad and VT100 keypad depends on the emulation being used. In particular, mapping of VT100 keypad keys "-" and "," varies between different emulations as these keys share a single key on the PC keypad.