This charset is available in recode under the name
CDC-NOS, with NOS as an acceptable alias.
This is one of the charset in use on CDC Cyber NOS systems to represent ASCII, sometimes named NOS 6/12 code for coding ASCII. This code is also known as caret ASCII. It is based on a six bits character set in which small letters and control characters are coded using a ^ escape and, sometimes, a @ escape.
The routines given here presume that the six bits code is already expressed in ASCII by the communication channel, with embedded ASCII ^ and @ escapes.
Here is a table showing which characters are being used to encode each ASCII character.
000 ^5 020 ^# 040 060 0 100 @A 120 P 140 @G 160 ^P 001 ^6 021 ^[ 041 ! 061 1 101 A 121 Q 141 ^A 161 ^Q 002 ^7 022 ^] 042 " 062 2 102 B 122 R 142 ^B 162 ^R 003 ^8 023 ^% 043 # 063 3 103 C 123 S 143 ^C 163 ^S 004 ^9 024 ^" 044 $ 064 4 104 D 124 T 144 ^D 164 ^T 005 ^+ 025 ^_ 045 % 065 5 105 E 125 U 145 ^E 165 ^U 006 ^- 026 ^! 046 & 066 6 106 F 126 V 146 ^F 166 ^V 007 ^* 027 ^& 047 ' 067 7 107 G 127 W 147 ^G 167 ^W 010 ^/ 030 ^' 050 ( 070 8 110 H 130 X 150 ^H 170 ^X 011 ^( 031 ^? 051 ) 071 9 111 I 131 Y 151 ^I 171 ^Y 012 ^) 032 ^< 052 * 072 @D 112 J 132 Z 152 ^J 172 ^Z 013 ^$ 033 ^> 053 + 073 ; 113 K 133 [ 153 ^K 173 ^0 014 ^= 034 ^@ 054 , 074 < 114 L 134 \ 154 ^L 174 ^1 015 ^ 035 ^\ 055 - 075 = 115 M 135 ] 155 ^M 175 ^2 016 ^, 036 ^^ 056 . 076 > 116 N 136 @B 156 ^N 176 ^3 017 ^. 037 ^; 057 / 077 ? 117 O 137 _ 157 ^O 177 ^4
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