VT100

From Mudpedia

VT100 is a computer terminal which was made by DEC (Digital Equipment Corporation). It became the de facto standard used by modern terminal emulators.

The VT100 was introduced in August 1978, following its predecessor, the VT52, and communicated with its host system over serial lines using the ASCII character set and control sequences (a.k.a. escape sequences) standardized by ANSI (American National Standards Institute). The VT100 was the first Digital mass-market terminal to incorporate graphic renditions (blinking, bolding, reverse video, and underlining) as well as a selectable 80 or 132 column display. The VT100 also introduced an additional character set, often called box characters, that allowed the drawing of on-screen forms.

The control sequences used by the VT100 family are based on the ANSI X3.64 standard, later ECMA-48 and ISO/IEC 6429. These are typically referred to as ANSI colors.^[1] In addition, the VT100 provided backwards compatibility for VT52 users, with support for the VT52 control sequences.^[2]

In 1983, the VT100 was replaced by the more-powerful VT200 series terminals such as the VT220. In 1995, the terminal business of Digital was sold to Boundless Technologies.

Contents 1 VT100 Console Codes 1.1 Control Characters 1.2 Escape Sequences 1.3 CSI color codes 1.4 ECMA-48 CSI sequences 2 See also 3 References

[edit] VT100 Console Codes

[edit] Control Characters

Code	Effect	Note
\x07	BEL	Ring the terminal bell.
\x08	BS	Backspace
\x09	HT	Tab
\x0A	LF	Linefeed
\x0D	CR	Carriage return
\x1B	ESC	Escape
\x1B [	CSI	Control Sequence Introducer

[edit] Escape Sequences

Code	Effect	Note
ESC c	RIS	Reset the terminal
ESC D	IND	Linefeed
ESC E	NEL	Newline
ESC 7	DECSC	Save cursor position
ESC 8	DECRC	Restore cursor position
ESC [	CSI	Control sequence introducer
ESC >	DECPNM	Set numeric keypad mode
ESC =	DECPAM	Set application keypad mode

[edit] CSI color codes

Code	Effect	Note
CSI n m	SGR	ANSI color code
CSI 38 ; 5 ; n m	XTERM256	foreground xterm color code, not part of the VT100 standard.
CSI 48 ; 5 ; n m	XTERM256	background xterm color code, not part of the VT100 standard.

[edit] ECMA-48 CSI sequences

Code	Effect	Note
CSI n @	ICH	Insert n blank characters
CSI n A	CUU	Move cursor up n rows
CSI n B	CUD	Move cursor down n rows
CSI n C	CUF	Move cursor forward n rows
CSI n D	CUB	Move cursor backward n rows
CSI n E	CNL	Move cursor down n rows, to column 1
CSI n F	CPL	Move cursor up n rows, to column 1
CSI n G	CHA	Move cursor to column n
CSI n ; m H	CUP	Move cursor to row n and column m
CSI n J	ED	n = 0 erase from cursor to end of display n = 1 erase from cursor to start of display n = 2 erase display
CSI n K	EL	n = 0 erase line n=1 erase from start of line to cursor n=2 erase from cursor to end of line
CSI n L	IL	Insert n blank lines
CSI n M	DL	Delete n lines
CSI n P	DCH	Delete n characters
CSI n X	ECH	Erase n characters
CSI n ; m r	DECSTBM	Set scrolling region between top row n and bottom row m

[edit] See also

• ANSI colors
• xterm 256 colors
• Comparison of MUD clients
• Comparison of MUD codebases

[edit] References