The recode reference manual
10.3 ASCII "bang bang"
This charset is available in recode under the name Bang-Bang.
This code, in use on Cybers at Université de Montréal mainly, served
to code a lot of French texts. The original name of this charset is
ASCII codé Display. This code is also known as Bang-bang.
It is based on a six bits character set in which capitals, French
diacritics and a few others are coded using an ! escape followed
by a single character, and control characters using a double !
escape followed by a single character.
The routines given here presume that the six bits code is already expressed
in ASCII by the communication channel, with embedded ASCII !
escapes.
Here is a table showing which characters are being used to encode each
ASCII character.
| | 000 !!@ 020 !!P 040 060 0 100 @ 120 !P 140 !@ 160 P
001 !!A 021 !!Q 041 !" 061 1 101 !A 121 !Q 141 A 161 Q
002 !!B 022 !!R 042 " 062 2 102 !B 122 !R 142 B 162 R
003 !!C 023 !!S 043 # 063 3 103 !C 123 !S 143 C 163 S
004 !!D 024 !!T 044 $ 064 4 104 !D 124 !T 144 D 164 T
005 !!E 025 !!U 045 % 065 5 105 !E 125 !U 145 E 165 U
006 !!F 026 !!V 046 & 066 6 106 !F 126 !V 146 F 166 V
007 !!G 027 !!W 047 ' 067 7 107 !G 127 !W 147 G 167 W
010 !!H 030 !!X 050 ( 070 8 110 !H 130 !X 150 H 170 X
011 !!I 031 !!Y 051 ) 071 9 111 !I 131 !Y 151 I 171 Y
012 !!J 032 !!Z 052 * 072 : 112 !J 132 !Z 152 J 172 Z
013 !!K 033 !![ 053 + 073 ; 113 !K 133 [ 153 K 173 ![
014 !!L 034 !!\ 054 , 074 < 114 !L 134 \ 154 L 174 !\
015 !!M 035 !!] 055 - 075 = 115 !M 135 ] 155 M 175 !]
016 !!N 036 !!^ 056 . 076 > 116 !N 136 ^ 156 N 176 !^
017 !!O 037 !!_ 057 / 077 ? 117 !O 137 _ 157 O 177 !_
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