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vt100_codes_news.txt
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=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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This information is largely derived from DEC document EK-VT100-UG-003,
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the original manual for the VT100.
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Most so-called VT100 implementations (both stand-alone terminals and
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PC emulators) actually implement more controls than are given here.
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The minimal standard is really the slightly more advanced VT102 terminal.
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...RSS
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=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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Path: cs.utk.edu!gatech!usenet.ins.cwru.edu!agate!doc.ic.ac.uk!pipex!sunic
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!trane.uninett.no!news.eunet.no!nuug!news.eunet.fi!funic!nntp.hut.fi
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!lk-hp-14.hut.fi!pev
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From: pev@lk-hp-14.hut.fi (Petri Virekoski)
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Newsgroups: comp.terminals
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Subject: VT100 control info
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Date: 11 Sep 1993 12:43:22 GMT
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Organization: Helsinki University of Technology
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Lines: 878
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Distribution: world
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Message-ID: <26sh5a$oct@nntp.hut.fi>
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NNTP-Posting-Host: lk-hp-14.hut.fi
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OK. I finally found this on my local machine by doing a locate.
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Still haven't found any FTP site bearing this kind of information.
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I myself would need a similar file with extensions for VT200/VT220.
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Please do not address any complaints to me, since I just copied this file
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as I found it. There might be some escape sequences missing from the
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end because there was some carbage, but I don't know. Here goes...
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This file describes information needed for controlling the VT100 terminal from
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a remote computer. All of the information was derived from the VT100 user's
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manual, Programmer's Information section. Full documentation can be obtain
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from DIGITAL'S Accessory and Supplies Group.
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[The notation <ESC> denotes a single ASCII Escape character, 1Bx.]
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ANSI mode w/cursor ANSI mode w/cursor
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Cursor Key VT52 mode key mode reset key mode set
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--------------------------------------------------------------------------
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UP <ESC>A <ESC>[A <ESC>OA
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DOWN <ESC>B <ESC>[B <ESC>OB
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RIGHT <ESC>C <ESC>[C <ESC>OC
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LEFT <ESC>D <ESC>[D <ESC>OD
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*******************************
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* Special Graphics Characters *
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*******************************
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If the Special Graphics set is selected, the graphics for ASCII codes
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0137 through 0176 will be replaced according to the following table (see the
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SCS control sequence).
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Octal ASCII Special Octal ASCII Special
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Code graphic graphic code graphic graphic
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-------------------------------------------------------------------------------
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0137 _ Blank 0157 o Horiz Line - scan 1
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0140 \ Diamond 0160 p Horiz Line - scan 3
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0141 a Checkerboard 0161 q Horiz Line - scan 5
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0142 b Digraph: HT 0162 r Horiz Line - scan 7
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0143 c Digraph: FF 0163 s Horiz Line - scan 9
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0144 d Digraph: CR 0164 t Left "T" (|-)
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0145 e Digraph: LF 0165 u Right "T" (-|)
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0146 f Degree Symbol 0166 v Bottom "T" (|_)
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0147 g +/- Symbol 0167 w Top "T" (T)
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0150 h Digraph: NL 0170 x Vertical Bar (|)
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0151 i Digraph: VT 0171 y Less/Equal (<_)
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0152 j Lower-right corner 0172 z Grtr/Egual (>_)
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0153 k Upper-right corner 0173 { Pi symbol
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0154 l Upper-left corner 0174 | Not equal (=/)
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0155 m Lower-left corner 0175 } UK pound symbol
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0156 n Crossing lines (+) 0176 ~ Centered dot
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NOTE 1: Codes 0152-0156 and 0164-0170 are used to draw rectangular grids" each
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piece of this set is contiguous with other so the lines formed will be
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unbroken.
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NOTE 2: Codes 0157-0163 give better vertical resolution than dashes and
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underlines when drawing graphs; using these segments, 120 x 132 resolution may
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be obtained in 132 column mode with the Advanced Video Option installed.
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*****************************
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* Terminal Control Commands *
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*****************************
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Control Characters
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------------------
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The control characters recognized by the VT100 are listed below. All
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other control characters cause no action to be taken.
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Control characters (codes 00 - 037 inclusive) are specifically excluded
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from the control sequence syntax, but may be embedded within a control
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sequence. Embedded control characters are executed as soon as they are
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encountered by the VT100. The processing of the control sequence then
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continues with the next character recieved. The exceptions are: if the <ESC>
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character occurs, the current control sequence is aborted, and a new one
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commences beginning with the <ESC> just recieved. If the character <CAN>
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(030) or the character <SUB> (032) occurs, the current control sequence is
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aborted. The ability to embed control characters allows the synchronization
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characters XON and XOFF to be interpreted properly without affecting the
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control sequence.
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Control Octal
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Character Code Action Taken
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------------------------------------------------------------------------------
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<NUL> 0000 Ignored on input; not stored in buffer
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<ENQ> 0005 Transmit ANSWERBACK message
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<BEL> 0007 Sound bell
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<BS> 0010 Move cursor to the left one position, unless it is at
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the left margin, in which case no action is taken.
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<HT> 0011 Move cursor to the next tab stop, or to the right
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margin if no further tabs are set.
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<LF> 0012 Causes either a line feed or new line operation (See
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new line mode.)
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<VT> 0013 Same as <LF>.
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<FF> 0014 Same as <LF>.
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<CR> 0015 Move the cursor to the left margin of the current line.
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<SO> 0016 Invoke the G1 character set, as designated by the SCS
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control sequence.
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<SI> 0017 Invoke the G0 character set, as selected by the <ESC>(
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sequence.
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<DC1> 0021 Causes terminal to resume transmission (XON).
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<DC3> 0023 Causes terminal to stop transmitting all codes except
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XOFF and XON (XOFF).
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<CAN> 0030 If sent during a control sequence, the sequence id
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immediately terminated and not executed. It also
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causes the error character (checkerboard) to be
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displayed.
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<SUB> 0032 Same as <CAN>.
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<ESC> 0033 Introduces a control sequence.
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<DEL> 0177 Ignored on input; not stored in buffer.
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The VT100 is an upward and downward software-compatible terminal;
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that is, previous Digital video terminals have Digital's private standards
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for control sequences. The American National Standards Institute has since
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standardized escape and control sequences in terminals in documents X3.41-1974
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and X3.64-1977.
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The VT100 is compatible with both the previous Digital standard and
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ANSI standards. Customers may use existing Digital software designed around
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the VT52 or new VT100 software. The VT100 has a "VT52 compatible" mode in
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which the VT100 responds to control sequences like a VT52. In this mode, most
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of the new VT100 features cannot be used.
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Throughout this document references will be made to "VT52 mode" or
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"ANSI mode". These two terms are used to indicate the VT100's software
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compatibility.
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NOTE: The ANSI standards allow the manufacturer flexibility in implementing
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each function. This document describes how the VT100 will respond to the
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implemented ANSI central function.
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NOTE: ANSI standards may be obtained by writing:
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American National Standards Institute
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Sales Department
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1430 Broadway
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New York, NY, 10018
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Definitions
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-----------
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Control Sequence Introducer (CSI) - An escape sequence that provides
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supplementary controls and is itself a prefix affecting the
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interpretation of a limited number of contiguous characters.
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In the VT100, the CSI is: <ESC>[
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Parameter: (1) A string of zero or more decimal characters which
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represent a single value. Leading zeros are ignored. The
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decimal characters have a range of 0 (060) to 9 (071).
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(2) The value so represented.
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Numeric Parameter: A parameter that represents a number, designated by
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Pn.
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Selective Parameter: A parameter that selects a subfunction from a
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specified set of subfunctions, designated by Ps. In general, a
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control sequence with more than one selective parameter causes
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the same effect as several control sequences, each with one
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selective parameter, e.g., CSI Psa; Psb; Psc F is identical to
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CSI Psa F CSI Psb F CSI Psc F.
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Parameter String: A string of parameters separated by a semicolon.
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Default: A function-dependent value that is assumed when no explicit
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value, or a value of 0, is specified.
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Final character: A character whose bit combination terminates an
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escape or control sequence.
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EXAMPLE: Control sequence to turn off all character attributes, then
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turn on underscore and blink attributes (SGR). <ESC>[0;4;5m
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Sequence:
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Delimiters
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/ \
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/ \
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\ / \ /
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<ESC>[ 0 ; 4 ; 5 m
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^^^^^^ ^ ^ ^ ^
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|||||| | | | |
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\||||/ \ | / +------Final character
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\||/ \ | /
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CSI Selective
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Parameters
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The octal representation of this string is:
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033 0133 060 073 064 073 065 0155
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<ESC> [ 0 ; 4 ; 5 m
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Alternate sequences which will accomplish the same thing:
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1) <ESC>[;4;m
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2) <ESC>[m
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<ESC>[4m
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<ESC>[5m
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3) <ESC>[0;04;005m
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Control Sequences
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-----------------
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All of the following control sequences are transmitted from the Host to
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VT100 unless otherwise noted. All of the control sequences are a subset of
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those defined in ANSI X 3.64 1977 and ANSI X 3.41 1974.
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The following text conforms to these formatting conventions:
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1) Control characters are designated by angle brackets (e.g.
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the Escape character is <ESC>).
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2) Parameters are indicated by curly braces.
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3) Parameter types usually are indicated as one of:
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{Pn} A string of digits representing a numerical
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value.
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{Ps} A character that selects an item from a list.
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{a-z} Any lowercase sequence of one44 or more
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characters in braces represent a value to be
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entered (as in {Pn}), and the name in the
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braces will be referred to in explanatory text.
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4) Spaces in the control sequence are present for clarity and
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may be omitted. Spaces which are required will be
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surrounded by single quotes: ' '.
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5) All other characters are literals.
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CPR Cursor Position Report VT100 to Host
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<ESC>[ {Pn} ; {Pn} R Default Value: 1
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The CPR sequence reports the active position by means of the
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parameters. This sequence has two parameter values, the first
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specifying the line and the second specifying the column. The default
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condition with no parameters present, or parameters of 0, is equivelent
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to a cursor at home position.
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The numbering of the lines depends upon the state of the Origin Mode
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(DECOM).
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This control sequence is sent in reply to a device status report (DSR)
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command sent from the host.
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CUB Cursor Backward Host to VT100 & VT100 to Host
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<ESC>[ {Pn} D Default Value: 1
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The CUB sequence move the cursor to the left. The distance moved is
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determined by the parameter. If the parameter missing, zero, or one,
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the cursor is moved one position. The cursor cannot be moved past the
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left margin. Editor Function.
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CUD Cursor Down Host to VT100 & VT100 to Host
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<ESC>[ {Pn} B Default value: 1
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Moves the cursor down a number of lines as specified in the parameter
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without changing columns. The cursor cannot be moved past the bottom
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margin. Editor Function.
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CUF Cursor Foreward Host to VT100 & VT100 to Host
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<ESC>[ {Pn} C Default Value: 1
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The CUF sequence moves the cursor to the right a number of positions
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specified in the parameter. The cursor cannot be moved past the right
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margin. Editor Function.
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CUP Cursor Position
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<ESC>[ {Pn} ; {Pn} H Default Value: 1
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The CUP sequence moves the curor to the position specified by the
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parameters. The first parameter specifies the line, and the second
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specifies the column. A value of zero for either line or column moves
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the cursor to the first line or column in the display. The default
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string (<ESC>H) homes the cursor. In the VT100, this command behaves
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identically to it's format effector counterpart, HVP.
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The numbering of the lines depends upon the state of the Origin Mode
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(DECOM). Editor Function.
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CUU Cursor Up Host to VT100 & VT100 to Host
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<ESC>[ {Pn} A Default Value: 1
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Moves the cursor up without changing columns. The cursor is moved up a
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number of lines as indicated by the parameter. The cursor cannot be
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moved beyond the top margin. Editor Function.
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DA Device Attributes Host to VT100 & VT100 to Host
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<ESC>[ {Pn} c Default Value: 0
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1) The host requests the VT100 to send a DA sequence to indentify
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itself. This is done by sending the DA sequence with no parameters,
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or with a parameter of zero.
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2) Response to the request described above (VT100 to host) is generated
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by the VT100 as a DA control sequencewith the numeric parameters as
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follows:
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Option Present Sequence Sent
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---------------------------------------------
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No options <ESC>[?1;0c
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Processor Option (STP) <ESC>[?1;1c
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Advanced Video Option (AVO) <ESC>[?1;2c
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AVO and STP <ESC>[?1;3c
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Graphics Option (GPO) <ESC>[?1;4c
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GPO and STP <ESC>[?1;5c
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GPO and AVO <ESC>[?1;6c
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GPO, ACO, and STP <ESC>[?1;7c
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<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>,
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<<<I doubt if alot of these DEC commands work..a few do.. (like scroll areas)>>
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<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
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DECALN Screen Alignment Display (DEC private)
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<ESC># 8
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This command causes the VT100 to fill it's screen with uppercase Es for
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screen focus and alignment.
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DECANM ANSI/VT52 Mode (DEC Private)
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This is a private parameter to the SM and RM control sequences. The
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reset state causes only VT52 compatible escape sequences to be
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recognized. The set state causes only ANSI compatible escape sequences
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to be recognized. See the entries for MODES, SM, and RM.
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DECARM Auto Repeat Mode (DEC Private)
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This is a private parameter to the SM and RM control sequences. The
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reset state causes no keyboard keys to auto-repeat, the set state
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causes most of them to. See MODES, SM, and RM.
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DECAWM Autowrap Mode (DEC Private)
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This is a private parameter to the SM and RM control sequences. The
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reset state prevents the cursor from moving when characters are
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recieved while at the right margin. The set state causes these
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characters to advance to the next line, causing a scroll up if required
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and permitted. See MODES, SM, and RM.
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DECCKM Cursor Keys Mode (DEC Private)
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This is a private parameter to the SM and RM control requences. This
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mode is only effective when the terminal is in keypad application mode
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(DECPAM) and the ANSI/VT52 mode (DECANM) is set. Under these
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conditions, if this mode is reset, the cursor keys will send ANSI
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cursor control commands. If setm the cursor keys will send application
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function commands (See MODES, RM, and SM).
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DECCOLM Column Mode (DEC Private)
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This is a private parameter to the SM and RM control sequences. The
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reset state causes an 80 column screen to be used. The set state
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causes a 132 column screen to be used. See MODES, RM, and SM.
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DECDHL Double Height Line (DEC Private)
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Top Half: <ESC>#3
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Bottom Half: <ESC>#4
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These sequences cause the line containing the cursor to become the top
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or bottom half of a double-height, double width line. The sequences
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should be used in pairs on adjacent lines with each line containing the
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same character string. If the line was single width single height, all
|
|
|
characters to the right of the center of the screen will be lost. The
|
|
|
cursor remains over the same character position, unless it would be to
|
|
|
the right of the right margin, in which case it is moved to the right
|
|
|
margin.
|
|
|
|
|
|
|
|
|
DECDWL Double Width Line (DEC Private)
|
|
|
|
|
|
<ESC>#6
|
|
|
|
|
|
This causes the line that contains the cursor to become double-width
|
|
|
single height. If the line was single width, all characters ro the
|
|
|
right of the center of the screen will be lost. The cursor remains
|
|
|
over the same character position, unless it would be to the right of
|
|
|
the right margin, in which case it is moved to the right margin.
|
|
|
|
|
|
|
|
|
DECID Identify Terminal (DEC Private)
|
|
|
|
|
|
<ESC>Z
|
|
|
|
|
|
This sequence causes the same response as the DA sequence. This
|
|
|
sequence will not be supported in future models.
|
|
|
|
|
|
|
|
|
DECINLM Interlace Mode (DEC Private)
|
|
|
|
|
|
This is a private parameter to the RM and SM control sequences. The
|
|
|
reset state (non-interlace) causes the video processor to display 240
|
|
|
scan lines per frame. The set state causes the video processor to
|
|
|
display 480 scan lines per screen. See MODES, RM, and SM.
|
|
|
|
|
|
|
|
|
DECKPAM Keypad Application Mode (DEC Private)
|
|
|
|
|
|
<ESC>=
|
|
|
|
|
|
The auxiliary keypad keys will transmit control sequences.
|
|
|
|
|
|
|
|
|
DECKPNM Keypad Numeric Mode (DEC Private)
|
|
|
|
|
|
<ESC> >
|
|
|
|
|
|
The auxiliary keypad keys will send ASCII codes corresponding to the
|
|
|
characters engraved on their keys.
|
|
|
|
|
|
|
|
|
DECLL Load LEDs (DEC Private)
|
|
|
|
|
|
<ESC>[ {Ps} q Default Value: 0
|
|
|
|
|
|
Load the four programmable LEDs on the keyboard according to the
|
|
|
prameter(s).
|
|
|
|
|
|
Parameter Meaning
|
|
|
-----------------------
|
|
|
0 Clear All LEDs
|
|
|
1 Light L1
|
|
|
2 Light L2
|
|
|
3 Light L3
|
|
|
4 Light L4
|
|
|
|
|
|
|
|
|
DECOM Origin Mode (DEC Private)
|
|
|
|
|
|
This is a private parameter to SM and RM control sequences. The reset
|
|
|
state causes the origin (or home position) to be the upper left
|
|
|
character position of the screen. Line and column numbers are,
|
|
|
therefore, independent of current margin settings. The cursor may be
|
|
|
positioned outside the margins with a cursor position (CUP) or
|
|
|
horizontal and vertical position (HVP) control.
|
|
|
|
|
|
The set state causes the origin to be at the upper left character
|
|
|
position within the current margins. Line and column numbers are,
|
|
|
therefore, relative to the current margin settings. The cursor cannot
|
|
|
be positioned outside of the margins.
|
|
|
|
|
|
The cursor is moved to the new home position when this mode is set or
|
|
|
reset. Lines and columns are numbered consecutively, with the origin
|
|
|
being line 1, column 1.
|
|
|
|
|
|
|
|
|
DECRC Restore Cursor (DEC Private)
|
|
|
|
|
|
<ESC>8
|
|
|
|
|
|
This sequence causes the previously saved cursor position, graphic
|
|
|
rendition, and character set to be restored.
|
|
|
|
|
|
|
|
|
DECREPTPARM Report Terminal Parameters VT100 to Host
|
|
|
|
|
|
<ESC>[ {sol} ; {par} ; {nbits} ; {xspd} ; {rspd} ; {cmul} ; {flags} x
|
|
|
|
|
|
This sequence is generated by the VT100 to notify the host of the
|
|
|
status of selected terminal parameters. The status sequence may be
|
|
|
sent when requested by the host (via DECREQTPARM) or at the terminal's
|
|
|
discretion. On power up or reset, the VT100 is inhibited from sending
|
|
|
unsolicited reports.
|
|
|
|
|
|
The meanings of the sequence paramters are:
|
|
|
|
|
|
Parameter Value Meaning
|
|
|
------------------------------------------------------------------
|
|
|
{sol} 1 This message is a report.
|
|
|
2 This message is a report, and the terminal is
|
|
|
only reporting on request.
|
|
|
|
|
|
{par} 1 No parity set
|
|
|
4 Parity set and odd
|
|
|
5 Parity set and even
|
|
|
|
|
|
{nbits} 1 8 bits per character
|
|
|
2 7 bits per character
|
|
|
|
|
|
{xspd} 0 Speed set to 50 bps
|
|
|
-and- 8 Speed set to 75 bps
|
|
|
{rspd} 16 Speed set to 110 bps
|
|
|
24 Speed set to 134.5 bps
|
|
|
{xspd}= 32 Speed set to 150 bps
|
|
|
Transmit 40 Speed set to 200 bps
|
|
|
Speed 48 Speed set to 300 bps
|
|
|
56 Speed set to 600 bps
|
|
|
{rspd}= 64 Speed set to 1200 bps
|
|
|
Recieve 72 Speed set to 1800 bps
|
|
|
Speed 80 Speed set to 2000 bps
|
|
|
88 Speed set to 2400 bps
|
|
|
96 Speed set to 3600 bps
|
|
|
104 Speed set to 4800 bps
|
|
|
112 Speed set to 9600 bps
|
|
|
120 Speed set tp 19200 bps
|
|
|
|
|
|
{cmul} 1 The bit rate multiplier is 16
|
|
|
|
|
|
{flags} 0-15 This value communicates the four switch values
|
|
|
in block 5 of SET-UP B, which are only visible
|
|
|
to the user when an STP option is installed.
|
|
|
|
|
|
|
|
|
DECREQTPARM Request Terminal Parameters
|
|
|
|
|
|
<ESC>[ {Ps} x
|
|
|
|
|
|
The host sends this sequence to request the VT100 to send a DECREPTPARM
|
|
|
sequence back. {Ps} can be either 0 or 1. If 0, the terminal will be
|
|
|
allowed to send unsolicited DECREPTPARMs. These reports will be
|
|
|
generated each time the terminal exits the SET-UP mode. If {Ps} is 1,
|
|
|
then the terminal will only generate DECREPTPARMs in response to a
|
|
|
request.
|
|
|
|
|
|
|
|
|
DECSC Save Cursor (DEC Private)
|
|
|
|
|
|
<ESC>7
|
|
|
|
|
|
Causes the cursor position, graphic rendition, and character set to be
|
|
|
saved. (See DECRC)
|
|
|
|
|
|
|
|
|
DECSCLM Scrolling Mode (DEC Private)
|
|
|
|
|
|
This is a private parameter to RM and SM control sequences. The reset
|
|
|
state causes scrolls to "jump" instantaneuously one line at a time.
|
|
|
The set state causes the scrolls to be "smooth", and scrolls at a
|
|
|
maximum rate of siz lines/sec. See MODES, RM, and SM.
|
|
|
|
|
|
|
|
|
DECSCNM Screen Mode (DEC Private)
|
|
|
|
|
|
This is a private parameter to RM and SM control sequences. The reset
|
|
|
state causes the screen to be black with white characters; the set
|
|
|
state causes the screen to be white with black characters. See MODES,
|
|
|
RM, and SM.
|
|
|
|
|
|
<<<<This one works...and is very handy! >>>>
|
|
|
DECSTBM Set Top and Bottom Margins (DEC Private)
|
|
|
|
|
|
<ESC>[ {Pn} ; {Pn} r Default Values: See Below
|
|
|
|
|
|
This sequence sets the top and bottom margins to define the scrolling
|
|
|
region. The first parameter is the line number of the first line in
|
|
|
the scrolling region; the second parameter is the line number of the
|
|
|
bottom line of the scrolling region. Default is the entire screen (no
|
|
|
margins). The minimum region allowed is two lines, i.e., the top line
|
|
|
must be less than the bottom. The cursor is placed in the home
|
|
|
position (See DECOM).
|
|
|
|
|
|
|
|
|
DECSWL Single-width Line (DEC Private)
|
|
|
|
|
|
<ESC>#5
|
|
|
|
|
|
This causes the line which contains the cursor to become single-width,
|
|
|
single-height. The cursor remains on the same character position.
|
|
|
This is the default condition for all new lines on the screen.
|
|
|
|
|
|
|
|
|
DECTST Invoke Confidence Test
|
|
|
|
|
|
<ESC>[ 2 ; {Ps} y
|
|
|
|
|
|
Ps is the parameter indicating the test to be done. It is computed by
|
|
|
taking the weight indicated for each desired test and adding them
|
|
|
together. If Ps is 0, no test is performed but the VT100 is reset.
|
|
|
|
|
|
Test Weight
|
|
|
--------------------------------------------------------------
|
|
|
POST (ROM checksum, RAM NVR, keyboardm and AVO) 1
|
|
|
Data Loop Back (Loopback connector required) 2
|
|
|
EIA Modem Control Test (Loopback connector req.) 4
|
|
|
Repeat Testing until failure 8
|
|
|
|
|
|
|
|
|
DSR Device Status Report Host to VT100 & VT100 to Host
|
|
|
|
|
|
<ESC>[ {Ps} n
|
|
|
|
|
|
Requests and reports the general status of the VT100 according to the
|
|
|
following parameters:
|
|
|
|
|
|
Parameter Meaning
|
|
|
---------------------------------------------------------------
|
|
|
0 Response from VT100 - Ready, no faults detected
|
|
|
3 Response from VT100 - Malfunction Detected
|
|
|
5 Command from host - Report Status (using a DSR control
|
|
|
sequence)
|
|
|
6 Command from host - Report Active Position (using a CPR
|
|
|
sequence)
|
|
|
|
|
|
DSR with a parameter of 0 or 3 is always sent as a response to a
|
|
|
requesting DSR with a parameter of 5.
|
|
|
|
|
|
|
|
|
ED Erase in Display
|
|
|
|
|
|
<ESC>[ {Ps} J Default: 0
|
|
|
|
|
|
This sequence erases some or all of the characters in the display
|
|
|
according to the parameter. Any complete line erased by this sequence
|
|
|
will return that line to single width mode. Editor Function.
|
|
|
|
|
|
Parameter Meaning
|
|
|
----------------------------------------------------------------
|
|
|
0 Erase from the cursor to the end of the screen.
|
|
|
1 Erase from the start of the screen to the cursor.
|
|
|
2 Erase the entire screen.
|
|
|
|
|
|
|
|
|
EL Erase in Line
|
|
|
|
|
|
<ESC>[ {Ps} K Default: 0
|
|
|
|
|
|
Erases some or all characters in the active line, according to the
|
|
|
parameter. Editor Function.
|
|
|
|
|
|
Parameter Meaning
|
|
|
---------------------------------------------------------------
|
|
|
0 Erase from cursor to the end of the line.
|
|
|
1 Erase from the start of the line to the cursor.
|
|
|
2 Erase the entire line.
|
|
|
|
|
|
|
|
|
HTS Horizontal Tab Set
|
|
|
|
|
|
<ESC>H
|
|
|
|
|
|
Set a tab stop at the current cursor position. Format Effector.
|
|
|
|
|
|
|
|
|
HVP Horizontal and Vertical Position
|
|
|
|
|
|
<ESC>[ {Pn} ; {Pn} f
|
|
|
|
|
|
Moves the cursor to the position specified by the parameters. The
|
|
|
first parameter specifies the line, and the second specifies the
|
|
|
column. A parameter of 0 or 1 causes the active position to move to
|
|
|
the first line or column in the display. In the VT100, this control
|
|
|
behaves identically with it's editor counterpart, CUP. The numbering
|
|
|
of hte lines depends upon the state of the Origin Mode (DECOM). Format
|
|
|
Effector.
|
|
|
|
|
|
|
|
|
IND Index
|
|
|
|
|
|
<ESC>D
|
|
|
|
|
|
This sequence causes the cursor to move downward one line without
|
|
|
changing the column. If the cursor is at the bottom margin, a scroll
|
|
|
up is performed. Format Effector.
|
|
|
|
|
|
|
|
|
LNM Line Feed/New Line Mode
|
|
|
|
|
|
This is a parameter to SM and RM control sequences. The reset state
|
|
|
causes the interpretation of the <LF> character to imply only vertical
|
|
|
movement of the cursor and causes the RETURN key to send the single
|
|
|
code <CR>. The set state causes the <LF> character to imply movement
|
|
|
to the first position of the following line, and causes the RETURN key
|
|
|
to send the code pair <CR><LF>. This is the New Line option.
|
|
|
|
|
|
This mode does not affect the Index (IND) or the next line (NEL) format
|
|
|
effectors.
|
|
|
|
|
|
|
|
|
MODES The Following is a list of VT100 modes which may be changed with Set
|
|
|
Mode (SM) and Reset Mode (RM) controls.
|
|
|
|
|
|
ANSI Specified Modes
|
|
|
|
|
|
Parameter Mnemonic Function
|
|
|
------------------------------------------------------------------
|
|
|
0 Error (Ignored)
|
|
|
20 LNM Line Feed/New Line Mode
|
|
|
|
|
|
|
|
|
DEC Private Modes
|
|
|
|
|
|
If the first character in the parameter string is ? (077), the
|
|
|
parameters are interpreted as DEC private parameters according to the
|
|
|
following:
|
|
|
|
|
|
Parameter Mnemonic Function
|
|
|
-------------------------------------------------------------------
|
|
|
0 Error (Ignored)
|
|
|
1 DECCKM Cursor Key
|
|
|
2 DECANM ANSI/VT52
|
|
|
3 DECCOLM Column
|
|
|
4 DECSCLM Scrolling
|
|
|
5 DECSCNM Screen
|
|
|
6 DECOM Origin
|
|
|
7 DECAWM Auto Wrap
|
|
|
8 DECARM Auto Repeat
|
|
|
9 DECINLM Interlace
|
|
|
|
|
|
Any other parameter values are ignored.
|
|
|
|
|
|
The following modes, which are specified in the ANSI standard, may be
|
|
|
considered to be permanently set, permanently reset, or not applicable,
|
|
|
as noted.
|
|
|
|
|
|
Mnemonic Function State
|
|
|
------------------------------------------------------
|
|
|
CRM Control Representation Reset
|
|
|
EBM Editing Boundary Reset
|
|
|
ERM Erasure Set
|
|
|
FEAM Format Effector Action Reset
|
|
|
FETM Format Effector Transfer Reset
|
|
|
GATM Guarded Area Transfer NA
|
|
|
HEM Horizontal Editing NA
|
|
|
IRM Insertion-replacement Reset
|
|
|
KAM Keyboard Action Reset
|
|
|
MATM Multiple area transfer NA
|
|
|
PUM Positioning Unit Reset
|
|
|
SATM Selected Area Transfer NA
|
|
|
SRTM Status Reporting Transfer Reset
|
|
|
TSM Tabulation Stop Reset
|
|
|
TTM Transfer Termination NA
|
|
|
VEM Vertical Editing NA
|
|
|
|
|
|
|
|
|
NEL Next Line
|
|
|
|
|
|
<ESC>E
|
|
|
|
|
|
This causes the cursor to move to the first position of the next line
|
|
|
down. If the cursor is on the bottom line, a scroll is performed.
|
|
|
Format Effector.
|
|
|
|
|
|
|
|
|
RI Reverse Index
|
|
|
|
|
|
<ESC>M
|
|
|
|
|
|
Move the cursor up one line without changing columns. If the cursor is
|
|
|
on the top line, a scroll down is performed.
|
|
|
|
|
|
|
|
|
RIS Reset to Initial State
|
|
|
|
|
|
<ESC>c
|
|
|
|
|
|
Resets the VT100 to the state is has upon power up. This also causes
|
|
|
the execution of the POST and signal INT H to be asserted briefly.
|
|
|
|
|
|
|
|
|
RM Reset Mode
|
|
|
|
|
|
<ESC>[ {Ps} ; {Ps} l
|
|
|
|
|
|
Resets one or more VT100 modes as specified by each selective parameter
|
|
|
in the parameter string. Each mode to be reset is specified by a
|
|
|
separate parameter. See MODES and SM.
|
|
|
|
|
|
|
|
|
SCS Select Character Set
|
|
|
|
|
|
The appropriate D0 and G1 character sets are designated from one of the
|
|
|
five possible sets. The G0 and G1 sets are invokedd by the characters
|
|
|
<SI> and <SO>, respectively.
|
|
|
|
|
|
G0 Sets G1 Sets
|
|
|
Sequence Sequence Meaning
|
|
|
------------------------------------------------------------------
|
|
|
<ESC>(A <ESC>)A United Kingdom Set
|
|
|
<ESC>(B <ESC>)B ASCII Set
|
|
|
<ESC>(0 <ESC>)0 Special Graphics
|
|
|
<ESC>(1 <ESC>)1 Alternate Character ROM
|
|
|
Standard Character Set
|
|
|
<ESC>(2 <ESC>)2 Alternate Character ROM
|
|
|
Special Graphics
|
|
|
|
|
|
The United Kingdom and ASCII sets conform to the "ISO international
|
|
|
register of character sets to be used with escape sequences". The
|
|
|
other sets are private character sets. Special graphics means that the
|
|
|
graphic characters fpr the codes 0137 to 0176 are replaced with other
|
|
|
characters. The specified character set will be used until another SCS
|
|
|
is recieved.
|
|
|
|
|
|
|
|
|
SGR Select Graphic Rendition
|
|
|
|
|
|
<ESC>[ {Ps} ; {Ps} m
|
|
|
|
|
|
Invoke the graphic rendition specified by the parameter(s). All
|
|
|
following characters transmitted to the VT100 are rendered according
|
|
|
to the parameter(s) until the next occurrence of an SGR. Format
|
|
|
Effector.
|
|
|
|
|
|
Parameter Meaning
|
|
|
---------------------------------------------------------------
|
|
|
0 Attributes Off
|
|
|
1 Bold or increased intensity
|
|
|
4 Underscore
|
|
|
5 Blink
|
|
|
7 Negative (reverse) image
|
|
|
|
|
|
All other parameter values are ignored.
|
|
|
|
|
|
Without the Advanced Video Option, only one type of character attribute
|
|
|
is possible, as determined by the cursor selection; in that case
|
|
|
specifying either underscore or reverse will activate the currently
|
|
|
selected attribute.
|
|
|
|
|
|
|
|
|
SM Set Mode
|
|
|
|
|
|
<ESC> [ {Ps} ; {Ps} h
|
|
|
|
|
|
Causes one or more modes to be set within the VT100 as specified by
|
|
|
each selective parameter string. Each mode to be set is specified by a
|
|
|
seperate parameter. A mode is considered set until it is reset by a
|
|
|
Reset Mode (RM) control sequence. See RM and MODES.
|
|
|
|
|
|
[Editor's note: The original DEC VT100 documentation EK-VT100-UG-003
|
|
|
erroneously omitted the "[" character from the SM sequence.]
|
|
|
|
|
|
|
|
|
TBC Tabulation Clear
|
|
|
|
|
|
<ESC>[ {Ps} g
|
|
|
|
|
|
If the parameter is missing or 0, this will clear the tab stop at the
|
|
|
cursor's position. If it is 3, this will clear all of the tab stops.
|
|
|
Any other parameter is ignored. Format Effector.
|
|
|
|
|
|
|
|
|
|
|
|
___
|
|
|
( /_)_---_-------------------------------------------------
|
|
|
(_/ ( ! / ) Petri Virekoski ------ pev@vipu.hut.fi ------
|
|
|
-------!/---------------------------------------------------
|
|
|
|
|
|
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
|
|
|
|
|
|
Article 4247 of comp.terminals:
|
|
|
Path: cs.utk.edu!willis.cis.uab.edu!news.ecn.bgu.edu!vixen.cso.uiuc.edu!howland.reston.ans.net!news.sprintlink.net!uunet!news.aurora.net!netnews
|
|
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From: msimms@kea.bc.ca (Michael Simms)
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Newsgroups: comp.terminals
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Subject: Re: VT420 control sequence question
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Date: 15 Jun 1995 01:23:10 GMT
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Organization: Attachmate Canada
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Lines: 39
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Distribution: world
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Message-ID: <3ro21u$559@angate.disc-net.com>
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References: <3rnlcd$pg8@senator-bedfellow.MIT.EDU>
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NNTP-Posting-Host: 204.174.235.139
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X-Newsreader: WinVN 0.92.5
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In article <3rnlcd$pg8@senator-bedfellow.MIT.EDU>, igorlord@mit.edu (Igor Lyubashevskiy) says:
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>
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>Hi, while reading through DEC's VT420 manuals, I enountered a control sequence
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>that I don't understand. That is "Change attributes in rectangular area"
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>(DECCARA).
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>
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>The manual says that this sequence's "syntax" is
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> CSI Pt;Pl;Pb;Pr;Ps1..Psn $ r
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>Where Psn = visual character attributes.
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>
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>Does anyone know what Psn really is (what those visual character attributes
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>are)? And how many of those Psn can be there?
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>If you can help, please reply either by email or by a followup to this group.
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>
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>Thank you for your time,
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>
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>Igor
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>
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The Ps1..Psn are the standard character attributes such as used with
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CSIm (SGR). The values they can hold are:
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0 - reset all attributes (white on black)
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1 - bold
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4 - underline
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5 - blink
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7 - inverse
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21 - bold off
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24 - underline off
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25 - blink off
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27 - inverse off
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For example to turn all the characters in the top left quadrant of the
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screen bold and inverse with no blinking (as I hate blinking) use:
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CSI 1;1;40;12;1;7;25$r
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As to the number of parameters, I don't know.
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Michael Simms.
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