Configuring the NCD Terminal Emulator

Using Keyboard Escape Sequences

An escape sequence is a series of non-printing characters, beginning with an Escape character, that sends a command to a device. Escape sequences are used by some legacy applications for printing, communications, and display management. The command in an escape sequence results in specified actions by devices. Escape sequences are also called control codes or control sequences.

The tables in this section describe the escape sequences sent to the terminal emulator from the following NCD keyboards: N-101/N-102, VT220/N-108LK, and N-97/N-Kana.

Escape key sequences are sent by the following types of keys:

Pressing a function key sends an escape sequence to the terminal emulator. The following tables list the function key escape sequences for NCD keyboards:

Table 12-10 N-101/N-102 keyboard

Table 12-14 VT220/N-108LK keyboard

Table 12-19 N-97/N-Kana keyboard
The keypad can be set in one of two modes: numeric or application. In numeric mode, pressing a keypad key results in a digit, numeric operator, or enter character. In application mode, the keypad keys are similar to the function keys in that pressing a key generates an escape sequence. The appCursorMode resource controls the mode; the Options menu includes a toggle (Application Cursor Mode) for local control.

The following tables list the keypad escape sequences for NCD keyboards:

Table 12-9 N-101/N-102 keyboard

Table 12-13 VT220 keyboard

Table 12-18 N-97/N-Kana keyboard
Pressing a key in the cursor keypad or edit keypad results in an escape sequence. The cursor keypad can also be used in either application mode or non-application mode. The Options menu includes a toggle (Application Cursor Mode) to alter the mode.

The following tables list the edit keypad escape sequences:

Table 12-11 N-101/N-102 keyboard

Table 12-17 N-108LK keyboard

The following tables list the cursor keypad escape sequences:

Table 12-12 N-101/N-102 keyboard

Table 12-15 N-108LK keyboard
Escape sequences for the Break, Shift, and Control keys for the N-108LK keyboard in the serial terminal emulator are listed in Table 12-16.

N-101/N-102 Keyboard Escape Sequences

The tables in this section list escape sequences for N-101/N-102 keyboards.

Table 12-9 N-101/N-102 Keypad Escape Sequences

Key	Application Mode Reset	Application Mode Set
Key	Application Mode Reset	8-bit	7-bit
0	0	SS3 p	Esc O p
1	1	SS3 q	Esc O q
2	2	SS3 r	Esc O t
3	3	SS3 s	Esc O s
4	4	SS3 t	Esc O t
5	5	SS3 u	Esc O u
6	6	SS3 v	Esc O v
7	7	SS3 w	Esc O w
8	8	SS3 x	Esc O x
9	9	SS3 y	Esc O y
Enter	Return	SS3 M	Esc O M
-	-	SS3 m	Esc O m
.	.	SS3 n	Esc O n
+	+	+	+
/	/	/	/
*	*	*	*

Table 12-10 N-101/N-102 Function Key Escape Sequences

Key	Escape Sequence
Key	8-bit	7-bit
F1	CSI 1 1 ~	Esc [ 1 1 ~
F2	CSI 1 2 ~	Esc [ 1 2 ~
F3	CSI 1 3 ~	Esc [ 1 3 ~
F4	CSI 1 4 ~	Esc [ 1 4 ~
F5	CSI 1 5 ~	Esc [ 1 5 ~
F6	CSI 1 7 ~	Esc [ 1 7 ~
F7	CSI 1 8 ~	Esc [ 1 8 ~
F8	CSI 1 9 ~	Esc [ 1 9 ~
F9	CSI 2 0 ~	Esc [ 2 0 ~
F10	CSI 2 1 ~	Esc [ 2 1 ~
F11	CSI 2 3 ~	Esc [ 2 3 ~
F12	CSI 2 4 ~	Esc [ 2 4 ~

Table 12-11 N-101/N-102 Editing Keypad Escape Sequences

Key	Escape Sequence
Key	8-bit	7-bit
Insert	CSI 2 ~	Esc [ 2 ~
Home	CSI ^ A	Esc [ ^ A
Page Up	CSI 5 ~	Esc [ 5 ~
Delete	CSI ^ ?	Esc [ ^ ?
End	CSI ^ B	Esc [ ^ B
Page Down	CSI 6 ~	Esc [ 6 ~

Table 12-12 N-101/N-102 Cursor Keypad Sequences

Arrow Key	Escape Sequence
Arrow Key	8-bit	7-bit
Up	CSI A	Esc [ A
Down	CSI B	Esc [ B
Right	CSI C	Esc [ C
Left	CSI D	Esc [ D

N-108LK (VT220-Style) Keyboard Escape Sequences

The tables in this section list escape sequences for N-108LK and VT220 keyboards.

Table 12-13 N-108LK Keypad Escape Sequences

Key	Application Mode Reset		Application Mode Set
Key	8-bit	7-bit	8-bit	7-bit
0	0	0	SS3 p	Esc O p
1	1	1	SS3 q	Esc O q
2	2	2	SS3 r	Esc O r
3	3	3	SS3 s	Esc O s
4	4	4	SS3 t	Esc O t
5	5	5	SS3 u	Esc O u
6	6	6	SS3 v	Esc O v
7	7	7	SS3 w	Esc O w
8	8	8	SS3 x	Esc O x
9	9	9	SS3 y	Esc O y
,	,	,	SS3 l	Esc O l
-	_	_	SS3 m	Esc O m
.	.	.	SS3 n	Esc O n
Enter	Return	Return	SS3 M	Esc O M
PF1	SS3 P	Esc O P	SS3 P	Esc O P
PF2	SS3 Q	Esc O Q	SS3 Q	Esc O Q
PF3	SS3 R	Esc O R	SS3 R	Esc O R
PF4	SS3 S	Esc O S	SS3 S	Esc O S

Table 12-14 N-108LK Function Key Escape Sequences

Key	VMS		ULTRIX
Key	8-bit	7-bit	8-bit	7-bit
F1	hold screen	hold screen	hold screen	hold screen
F2	print screen	print screen	print screen	print screen
F3
F4
F5*	Break	Break	Break	Break
F6	CSI 1 7 ~	Esc [ 1 7 ~	CSI 1 7 ~	Esc [ 1 7 ~
F7	CSI 1 8 ~	Esc [ 1 8 ~	CSI 1 8 ~	Esc [ 1 8 ~
F8	CSI 1 9 ~	Esc [ 1 9 ~	CSI 1 9 ~	Esc [ 1 9 ~
F9	CSI 2 0 ~	Esc [ 2 0 ~	CSI 2 0 ~	Esc [ 2 0 ~
F10	CSI 2 1 ~	Esc [ 2 1 ~	CSI 2 1 ~	Esc [ 2 1 ~
F11	CSI 2 3 ~	Esc [ 2 3 ~	Esc _	Esc _
F12	CSI 2 4 ~	Esc [ 2 4 ~	Backspace	Backspace
F13	CSI 2 5 ~	Esc [ 2 5 ~	Newline	Newline
F14	CSI 2 6 ~	Esc [ 2 6 ~	CSI 2 6 ~	Esc [ 2 6 ~
Help	CSI 2 8 ~	Esc [ 2 8 ~	CSI 2 8 ~	Esc [ 2 8 ~
Do	CSI 2 9 ~	Esc [ 2 9 ~	CSI 2 9 ~	Esc [ 2 9 ~
F17	CSI 3 1 ~	Esc [ 3 1 ~	CSI 3 1 ~	Esc [ 3 1 ~
F18	CSI 3 2 ~	Esc [ 3 2 ~	CSI 3 2 ~	Esc [ 3 2 ~
F19	CSI 3 3 ~	Esc [ 3 3 ~	CSI 3 3 ~	Esc [ 3 3 ~
F20	CSI 3 4 ~	Esc [ 3 4 ~	CSI 3 4 ~	Esc [ 3 4 ~
*F5 is the break key in a serial terminal emulator only.

Table 12-15 N-108LK Cursor Keypad Sequences

Arrow Key	Cursor Key Mode Reset		Cursor Key Mode Set
Arrow Key	8-bit	7-bit	8-bit	7-bit
Up	CSI A	Esc [ A	SS3 A	Esc O A
Down	CSI B	Esc [ B	SS3 B	Esc O B
Right	CSI C	Esc [ C	SS3 C	Esc O C
Left	CSI D	Esc [ D	SS3 D	Esc O D

Table 12-16 N-108LK Escape Sequences-Break, Shift, and Control

Key	Code Sent
Break*	250 millisecond Break
Shift-Break*	3.5 second Break & drop DTR
Control-@	NULL
Control-Space	NULL
Control-Shift-Space	NULL
* Break and Shift-Break apply to the serial terminal emulator only.

Table 12-17 N-108LK Editing Keypad Escape Sequences

Key	VMS		ULTRIX
Key	8-bit	7-bit	8-bit	7-bit
Find	CSI 1 ~	Esc [ 1 ~	CSI 1 ~	Esc [ 1 ~
Insert	CSI 2 ~	Esc [ 2 ~	CSI 2 ~	Esc [ 2 ~
Remove	CSI 3 ~	Esc [ 3 ~	CSI 3 ~	Esc [ 3 ~
Select	CSI 4 ~	Esc [ 4 ~	CSI 4 ~	Esc [ 4 ~
Prior	CSI 5 ~	Esc [ 5 ~	CSI 5 ~	Esc [ 5 ~
Next	CSI 6 ~	Esc [ 6 ~	CSI 6 ~	Esc [ 6 ~

N-97/N-Kana Keyboard Escape Sequences

The tables in this section list escape sequences for N-97 and N-Kana keyboards.

Table 12-18 N-97/N-Kana Keypad Escape Sequences

Key	Application Mode Reset		Application Mode Set
Key	8-bit	7-bit	8-bit	7-bit
0	0	0	SS3 p	Esc O p
1	1	1	SS3 q	Esc O q
2	2	2	SS3 r	Esc O r
3	3	3	SS3 s	Esc O s
4	4	4	SS3 t	Esc O t
5	5	5	SS3 u	Esc O u
6	6	6	SS3 v	Esc O v
7	7	7	SS3 w	Esc O w
8	8	8	SS3 x	Esc O x
9	9	9	SS3 y	Esc O y
,	,	,	SS3 l	Esc O l
-	_	_	SS3 m	Esc O m
.	.	.	SS3 n	Esc O n
Enter	Return	Return	SS3 M	Esc O M
PF1	SS3 P	Esc O P	SS3 P	Esc O P
PF2	SS3 Q	Esc O Q	SS3 Q	Esc O Q
PF3	SS3 R	Esc O R	SS3 R	Esc O R
PF4	SS3 S	Esc O S	SS3 S	Esc O S

Table 12-19 N-97/N-Kana Function Key Escape Sequences

Key	Escape Sequence
Key	8-bit	7-bit
F1	CSI 1 1 ~	Esc [ 1 1 ~
F2	CSI 1 2 ~	Esc [ 1 2 ~
F3	CSI 1 3 ~	Esc [ 1 3 ~
F4	CSI 1 4 ~	Esc [ 1 4 ~
F5	CSI 1 5 ~	Esc [ 1 5 ~
F6	CSI 1 7 ~	Esc [ 1 7 ~
F7	CSI 1 8 ~	Esc [ 1 8 ~
F8	CSI 1 9 ~	Esc [ 1 9 ~
F9	CSI 2 0 ~	Esc [ 2 0 ~
F10	CSI 2 1 ~	Esc [ 2 1 ~
F11	CSI 2 3 ~	Esc [ 2 3 ~
F12	CSI 2 4 ~	Esc [ 2 4 ~

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Table 12-10	N-101/N-102 keyboard
Table 12-14	VT220/N-108LK keyboard
Table 12-19	N-97/N-Kana keyboard

Table 12-9	N-101/N-102 keyboard
Table 12-13	VT220 keyboard
Table 12-18	N-97/N-Kana keyboard

Using Keyboard Escape Sequences

N-101/N-102 Keyboard Escape Sequences

Key

Application Mode Reset

8-bit

7-bit

N-108LK (VT220-Style) Keyboard Escape Sequences

Key

Code Sent

N-97/N-Kana Keyboard Escape Sequences