atty(7)atty(7)NAMEatty - Asian terminal driver
SYNOPSIS
#include <sys/aioctl.h>
DESCRIPTION
This reference page describes the additional features supported in the
Asian terminal driver used for conversational computing in a Japanese,
Chinese, or Korean environment. See tty(7) for a description of the
general terminal interface. See stty(1) for information on how to
activate the features discussed here.
The Asian terminal driver is available only if you install the Tru64
UNIX optional subsets for worldwide support. The Asian terminal driver
must be configured into the current running kernel in order for the
features described below to be enabled.
Line Disciplines
Line discipline switching to the Asian terminal driver is accomplished
with the TIOCSETD ioctl as follows:
int ldisc = ASYDISC;
ioctl(f, TIOCSETD, &ldisc);
Input Editing
A character for the Asian terminal driver can be composed of one or
more bytes, depending on the terminal codeset selected by the user. In
addition, the ISTRIP mask of the c_iflag field does not work with this
driver. The erase character (VERASE) logically erases the whole charac‐
ter, which may be more than one byte long.
Code Conversion
The Asian terminal driver allows an application to communicate with the
driver in one codeset while the driver communicates with the physical
device in another codeset. These two different codesets are called the
application codeset and the terminal codeset, respectively. The driver
performs any necessary codeset conversion on data passed between your
application and the device.
The following application codesets are supported by the Asian terminal
driver. The keyword that specifies the codeset in command parameters is
shown in parentheses. DEC Kanji (deckanji) Super DEC Kanji (sdeckanji)
Japanese EUC (eucJP) Shift JIS (SJIS) DEC Hanzi (dechanzi) DEC Hanyu
(dechanyu) Taiwanese EUC (eucTW) DEC Korean (deckorean) Korean EUC
(eucKR) UTF-8 (UTF-8) Big-5 (big5)
Reference pages are available for each codeset; for example, to find
out more about the DEC Korean codeset, see deckorean(5).
The following terminal codesets are supported by the Asian terminal
driver. The keyword that specifies the codeset in command parameters is
shown in parentheses. DEC Kanji (dec) DEC Kanji - 1978 (dec78) Japa‐
nese EUC (eucJP) Shift JIS (SJIS) 7-bit JIS (jis7) 8-bit JIS (jis8) DEC
Hanzi (dechanzi) Taiwanese EUC (eucTW) DEC Korean (deckorean) Korean
EUC (eucKR) UTF-8 (UTF-8) Big-5 (big5) Telecode (telecode)
By default, the Asian terminal driver supports all listed codesets
except for Big-5, Telecode, and UTF-8. Support for the BIG-5, UTF-8,
and Telecode codesets requires linking additional modules (that are
supplied in optional subsets) into the kernel.
History Mode Line Editing
The history mode supported by the Asian terminal driver allows the user
to have Emacs-like control for editing previously entered command
lines. Up to 32 lines can be stored in history mode, and each line can
have a maximum length of 127 characters. When commands are long, it is
possible that fewer than 32 commands are stored in the history list.
Short commands, those less than three characters (single-byte or multi‐
byte) in length, are not stored in the history list.
The following editing commands are available in history mode: Move to
the beginning of line. Delete the character under the cursor. Move to
the end of the line. Recall the previous command in the history list.
Recall the next command in the history list. Move the cursor left by
one character. Move the cursor right by one character. Delete the
character before the cursor. You can use the stty command to determine
and set the character that erases a character. Delete the word before
the cursor. You can use the stty command to determine and set the char‐
acter that erases a word.
Typing a normal character causes it to be inserted before the character
under the cursor. The kill, interrupt, and suspend characters cause the
Asian terminal driver to break out of history mode.
Kana-Kanji Conversion
The Kana-Kanji conversion mechanism for Japanese allows users to enter
an ASCII or Kana string and convert it to a Kanji or another Kana
string. The conversion is supported in both cbreak and cooked mode,
but activation of Kana-Kanji conversion is different for each mode.
See kkc(5) for more information about Kana-Kanji conversion. See
stty(1) on how to activate Kana-Kanji conversion under different modes.
Software On-Demand Loading
The Software On-Demand Loading (SoftODL) mechanism allows users to dis‐
play any number of user-defined characters (UDC) on terminals that sup‐
port hardware On-Demand Loading (ODL). Refer to odl(5) for more infor‐
mation about on-demand loading of UDCs.
Software Phrase Input Method
The Software phrase Input Method (SIM) mechanism for Chinese allows
users to enter a long phrase by typing in a short phrase key. Refer to
sim(5) for more information on this input mechanism.
SEE ALSO
Commands: stty(1)
Functions: ioctl(2)
Files: tty(7), utx(7)
Others: big5(5), Chinese(5), dechanyu(5), dechanzi(5), deckanji(5),
eucJP(5), eucKR(5), eucTW(5), Japanese(5), kkc(5), Korean(5), odl(5),
sdeckanji(5), shiftjis(5), sim(5), telecode(5), Unicode(5)atty(7)
