atty - Asian terminal driver
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 [Toc] [Back]
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 [Toc] [Back]
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 character,
which may be more than one byte long.
Code Conversion [Toc] [Back]
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
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) Japanese 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
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 [Toc] [Back]
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 multibyte) 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
character 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 [Toc] [Back]
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 KanaKanji
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
Software On-Demand Loading [Toc] [Back]
The Software On-Demand Loading (SoftODL) mechanism allows
users to display any number of user-defined characters
(UDC) on terminals that support hardware On-Demand Loading
(ODL). Refer to odl(5) for more information about ondemand
loading of UDCs.
Software Phrase Input Method [Toc] [Back]
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.
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)
[ Back ]