This table was assembled from a handwritten note lurking in an inherited manual, some Prime manuals, and the Unicode specification. It was collated by Dennis Boone, 2011.
Prime ECS was basically ISO-8859-1 turned upside down. Prime had long used the 7-bit ASCII character set, but due to heritage from the Honeywell S/16 family and Teletype machines, did so in mark parity form (i.e. with the high-order bit set). Thus, the conventional representation of ASCII in the machine had already "taken" the upper moby, so the characters of Latin-1 which were above point 127 had to be flipped into the lower moby.
A chart of Prime ASCII is available.
| Dec | Hex | Oct | Character | Mnemonic | Description |
|---|---|---|---|---|---|
| 000 | 00 | 000 | RES1 | ? | |
| 001 | 01 | 001 | RES2 | ? | |
| 002 | 02 | 002 | RES3 | ? | |
| 003 | 03 | 003 | RES4 | ? | |
| 004 | 04 | 004 | IND | Index | |
| 005 | 05 | 005 | NEL | Next line | |
| 006 | 06 | 006 | SSA | Start of selected area | |
| 007 | 07 | 007 | ESA | End of selected area | |
| 008 | 08 | 010 | HTS | Character tabulation set | |
| 009 | 09 | 011 | HTJ | Character tabulation with justification | |
| 010 | 0A | 012 | VTS | Line tabulation set | |
| 011 | 0B | 013 | PLD | Partial line forward | |
| 012 | 0C | 014 | PLU | Partial line backward | |
| 013 | 0D | 015 | RI | Reverse line feed | |
| 014 | 0E | 016 | SS2 | Single shift two | |
| 015 | 0F | 017 | SS3 | Single shift three | |
| 016 | 10 | 020 | DCS | Device control string | |
| 017 | 11 | 021 | PU1 | Private use one | |
| 018 | 12 | 022 | PU2 | Private use two | |
| 019 | 13 | 023 | STS | Set transmit state | |
| 020 | 14 | 024 | CCH | Cancel character | |
| 021 | 15 | 025 | MW | Message waiting | |
| 022 | 16 | 026 | SPA | Start of guarded area | |
| 023 | 17 | 027 | EPA | End of guarded area | |
| 024 | 18 | 030 | RES5 | ? | |
| 025 | 19 | 031 | RES6 | ? | |
| 026 | 1A | 032 | RES7 | ? | |
| 027 | 1B | 033 | CSI | Control sequence introducer | |
| 028 | 1C | 034 | ST | String terminator | |
| 029 | 1D | 035 | OSC | Operating system command | |
| 030 | 1E | 036 | PM | Privacy message | |
| 031 | 1F | 037 | APC | Applicaation program command | |
| 032 | 20 | 040 | NBSP | No-break space | |
| 033 | 21 | 041 | ¡ | INVE | Inverted exclamation mark |
| 034 | 22 | 042 | ¢ | CENT | Cent sign |
| 035 | 23 | 043 | £ | PND | Pound sign |
| 036 | 24 | 044 | ¤ | CURR | Currency sign |
| 037 | 25 | 045 | ¥ | YEN | Yen sign |
| 038 | 26 | 046 | ¦ | BBAR | Broken bar |
| 039 | 27 | 047 | § | SECT | Section sign |
| 040 | 28 | 050 | ¨ | DIA | Diaeresis |
| 041 | 29 | 051 | © | COPY | Copyright sign |
| 042 | 2A | 052 | ª | FOI | Feminine ordinal indicator |
| 043 | 2B | 053 | « | LAQM | Left-pointing double angle quotation mark |
| 044 | 2C | 054 | ¬ | NOT | Not sign |
| 045 | 2D | 055 | | SHY | Soft hyphen |
| 046 | 2E | 056 | ® | TM | Registered sign |
| 047 | 2F | 057 | ¯ | MACN | Macron |
| 048 | 30 | 060 | ° | DEGR | Degree sign |
| 049 | 31 | 061 | ± | PLMI | Plus-minus sign |
| 050 | 32 | 062 | ² | SPS2 | Superscript 2 |
| 051 | 33 | 063 | ³ | SPS3 | Superscript 3 |
| 052 | 34 | 064 | ´ | AAC | Acute accent |
| 053 | 35 | 065 | µ | LCMU | Micro sign |
| 054 | 36 | 066 | ¶ | PARA | Pilcrow sign |
| 055 | 37 | 067 | · | MIDD | Middle dot |
| 056 | 38 | 070 | ¸ | CED | Cedilla |
| 057 | 39 | 071 | ¹ | SPS1 | Superscript 1 |
| 058 | 3A | 072 | º | MOI | Masculine ordinal indicator |
| 059 | 3B | 073 | » | RAQM | Right-pointing double angle quotation mark |
| 060 | 3C | 074 | ¼ | FR14 | Vulgar fraction one quarter |
| 061 | 3D | 075 | ½ | FR12 | Vulgar fraction one half |
| 062 | 3E | 076 | ¾ | FR34 | Vulgar fraction three quarters |
| 063 | 3F | 077 | ¿ | INVQ | Inverted question mark |
| 064 | 40 | 100 | À | UCAG | Latin capital letter A with grave |
| 065 | 41 | 101 | Á | UCAA | Latin capital letter A with acute |
| 066 | 42 | 102 | Â | UCAC | Latin capital letter A with circumflex |
| 067 | 43 | 103 | Ã | UCAT | Latin capital letter A with tilde |
| 068 | 44 | 104 | Ä | UCAD | Latin capital letter A with diaeresis |
| 069 | 45 | 105 | Å | UCAR | Latin capital letter A with ring above |
| 070 | 46 | 106 | Æ | UCAE | Latin capital letter AE |
| 071 | 47 | 107 | Ç | UCCC | Latin capital letter C with cedilla |
| 072 | 48 | 110 | È | UCEG | Latin capital letter E with grave |
| 073 | 49 | 111 | É | UCEA | Latin capital letter E with acute |
| 074 | 4A | 112 | Ê | UCEC | Latin capital letter E with circumflex |
| 075 | 4B | 113 | Ë | UCED | Latin capital letter E with diaeresis |
| 076 | 4C | 114 | Ì | UCIG | Latin capital letter I with grave |
| 077 | 4D | 115 | Í | UCIA | Latin capital letter I with acute |
| 078 | 4E | 116 | Î | UCIC | Latin capital letter I with circumflex |
| 079 | 4F | 117 | Ï | UCID | Latin capital letter I with diaeresis |
| 080 | 50 | 120 | Ð | UETH | Latin capital letter ETH |
| 081 | 51 | 121 | Ñ | UCNT | Latin capital letter N with tilde |
| 082 | 52 | 122 | Ò | UCOG | Latin capital letter O with grave |
| 083 | 53 | 123 | Ó | UCOA | Latin capital letter O with acute |
| 084 | 54 | 124 | Ô | UCOC | Latin capital letter O with circumflex |
| 085 | 55 | 125 | Õ | UCOT | Latin capital letter O with tilde |
| 086 | 56 | 126 | Ö | UCOD | Latin capital letter O with diaeresis |
| 087 | 57 | 127 | × | MULT | Multiplication sign |
| 088 | 58 | 130 | Ø | UCOO | Latin capital letter O with stroke |
| 089 | 59 | 131 | Ù | UCUG | Latin capital letter U with grave |
| 090 | 5A | 132 | Ú | UCUA | Latin capital letter U with acute |
| 091 | 5B | 133 | Û | UCUC | Latin capital letter U with circumflex |
| 092 | 5C | 134 | Ü | UCUD | Latin capital letter U with diaeresis |
| 093 | 5D | 135 | Ý | UCYA | Latin capital letter Y with acute |
| 094 | 5E | 136 | Þ | UTHN | Latin capital letter THORN |
| 095 | 5F | 137 | ß | LGSS | Latin small letter sharp s |
| 096 | 60 | 140 | à | LCAG | Latin small letter a with grave |
| 097 | 61 | 141 | á | LCAA | Latin small letter a with acute |
| 098 | 62 | 142 | â | LCAC | Latin small letter a with circumflex |
| 099 | 63 | 143 | ã | LCAT | Latin small letter a with tilde |
| 100 | 64 | 144 | ä | LCAD | Latin small letter a with diaeresis |
| 101 | 65 | 145 | å | LCAR | Latin small letter a with ring above |
| 102 | 66 | 146 | æ | LCAE | Latin small leter ae |
| 103 | 67 | 147 | ç | LCCC | Latin small letter c with cedilla |
| 104 | 68 | 150 | è | LCEG | Latin small letter e with grave |
| 105 | 69 | 151 | é | LCEA | Latin small letter e with acute |
| 106 | 6A | 152 | ê | LCEC | Latin small letter e with circumflex |
| 107 | 6B | 153 | ë | LCED | Latin small letter e with diaeresis |
| 108 | 6C | 154 | ì | LCIG | Latin small letter i with grave |
| 109 | 6D | 155 | í | LCIA | Latin small letter i with acute |
| 110 | 6E | 156 | î | LCIC | Latin small letter i with circumflex |
| 111 | 6F | 157 | ï | LCID | Latin small letter i with diaeresis |
| 112 | 70 | 160 | ð | LETH | Latin small letter eth |
| 113 | 71 | 161 | ñ | LCNT | Latin small letter n with tilde |
| 114 | 72 | 162 | ò | LCOG | Latin small letter o with grave |
| 115 | 73 | 163 | ó | LCOA | Latin small letter o with acute |
| 116 | 74 | 164 | ô | LCOC | Latin small letter o with circumflex |
| 117 | 75 | 165 | õ | LCOT | Latin small letter o with tilde |
| 118 | 76 | 166 | ö | LCOD | Latin small letter o with diaeresis |
| 119 | 77 | 167 | ÷ | DIV | Division sign |
| 120 | 78 | 170 | ø | LCOO | Latin small letter o with stroke |
| 121 | 79 | 171 | ù | LCUG | Latin small letter u with grave |
| 122 | 7A | 172 | ú | LCUA | Latin small letter u with acute |
| 123 | 7B | 173 | û | LCUC | Latin small letter u with circumflex |
| 124 | 7C | 174 | ü | LCUD | Latin small letter u with diaeresis |
| 125 | 7D | 175 | ý | LCYA | Latin small letter y with acute |
| 126 | 7E | 176 | þ | LTHN | Latin small letter thorn |
| 127 | 7F | 177 | ÿ | LCYD | Latin small letter y with diaeresis |