Appendix D - Character set
| Hex | Dec | Code | Description | |
|---|---|---|---|---|
| 00 | 0 | NUL | Null | |
| 01 | 1 | SOH | A | Start of Heading |
| 02 | 2 | STX | B | Start of Text |
| 03 | 3 | ETX | C | End of Text |
| 04 | 4 | EOT | D | End of Transmit |
| 05 | 5 | ENQ | E | Enquiry |
| 06 | 6 | ACK | F | Acknowledge |
| 07 | 7 | BEL | G | Bell |
| 08 | 8 | BS | H | Backspace |
| 09 | 9 | HT | I | Horizontal Tab |
| 0A | 10 | LF | J | Line Feed |
| 0B | 11 | VT | K | Vertical Tab |
| 0C | 12 | FF | L | Form Feed |
| 0D | 13 | CR | M | Carriage Return |
| 0E | 14 | SO | N | Shift Out |
| 0F | 15 | SI | O | Shift In |
| 10 | 16 | DLE | P | Data Line Escape |
| 11 | 17 | DC1 | Q | X On |
| 12 | 18 | DC2 | R | Aux On |
| 13 | 19 | DC3 | S | X Off |
| 14 | 20 | DC4 | T | Aux Off |
| 15 | 21 | NAK | U | Negative Acknowledge |
| 16 | 22 | SYN | V | Synchronous File |
| 17 | 23 | ETB | W | End of Transmitted Block |
| 18 | 24 | CAN | X | Cancel |
| 19 | 25 | EM | Y | End of Medium |
| 1A | 26 | SUB | Z | Substitute |
| 1B | 27 | ESC | [ | Escape |
| 1C | 28 | FS | \ | File Separator |
| 1D | 29 | GS | ] | Group Separator |
| 1E | 30 | RS | £ | Record Separator |
| 1F | 31 | US | - | Unit Separator |
| 20 | 32 | Space | ||
| 21 | 33 | ! | ||
| 22 | 34 | " | ||
| 23 | 35 | # | ||
| 24 | 36 | $ | ||
| 25 | 37 | % | ||
| 26 | 38 | & | ||
| 27 | 39 | ' | ||
| 28 | 40 | ( | ||
| 29 | 41 | ) | ||
| 2A | 42 | * | ||
| 2B | 43 | + | ||
| 2C | 44 | , | ||
| 2D | 45 | - | ||
| 2E | 46 | . | ||
| 2F | 47 | / | ||
| 30 | 48 | 0 | ||
| 31 | 49 | 1 | ||
| 32 | 50 | 2 | ||
| 33 | 51 | 3 | ||
| 34 | 52 | 4 | ||
| 35 | 53 | 5 | ||
| 36 | 54 | 6 | ||
| 37 | 55 | 7 | ||
| 38 | 56 | 8 | ||
| 39 | 57 | 9 | ||
| 3A | 58 | : | ||
| 3B | 59 | ; | ||
| 3C | 60 | < | ||
| 3D | 61 | = | ||
| 3E | 62 | > | ||
| 3F | 63 | ? | ||
| 40 | 64 | @ | ||
| 41 | 65 | A | ||
| 42 | 66 | B | ||
| 43 | 67 | C | ||
| 44 | 68 | D | ||
| 45 | 69 | E | ||
| 46 | 70 | F | ||
| 47 | 71 | G | ||
| 48 | 72 | H | ||
| 49 | 73 | I | ||
| 4A | 74 | J | ||
| 4B | 75 | K | ||
| 4C | 76 | L | ||
| 4D | 77 | M | ||
| 4E | 78 | N | ||
| 4F | 79 | O | ||
| 50 | 80 | P | ||
| 51 | 81 | Q | ||
| 52 | 82 | R | ||
| 53 | 83 | S | ||
| 54 | 84 | T | ||
| 55 | 85 | U | ||
| 56 | 86 | V | ||
| 57 | 87 | W | ||
| 58 | 88 | X | ||
| 59 | 89 | Y | ||
| 5A | 90 | Z | ||
| 5B | 91 | [ | ||
| 5C | 92 | \ | ||
| 5D | 93 | ] | ||
| 5E | 94 | ^ | ||
| 5F | 95 | _ | ||
| 60 | 96 | ' | ||
| 61 | 97 | a | ||
| 62 | 98 | b | ||
| 63 | 99 | c | ||
| 64 | 100 | d | ||
| 65 | 101 | e | ||
| 66 | 102 | f | ||
| 67 | 103 | g | ||
| 68 | 104 | h | ||
| 69 | 105 | i | ||
| 6A | 106 | j | ||
| 6B | 107 | k | ||
| 6C | 108 | l | ||
| 6D | 109 | m | ||
| 6E | 110 | n | ||
| 6F | 111 | o | ||
| 70 | 112 | p | ||
| 71 | 113 | q | ||
| 72 | 114 | r | ||
| 73 | 115 | s | ||
| 74 | 116 | t | ||
| 75 | 117 | u | ||
| 76 | 118 | v | ||
| 77 | 119 | w | ||
| 78 | 120 | x | ||
| 79 | 121 | y | ||
| 7A | 122 | z | ||
| 7B | 123 | { | ||
| 7C | 124 | | | ||
| 7D | 125 | } | ||
| 7E | 126 | ~ | ||
| 7F | 127 | DEL | Delete | |
| A0 | 160 | ... | Exact Space | |
| A7 | 163 | £ | Pound |
Special characters
These are obtained by executing VDU 1, n from BBC BASIC, where n is the number of the character.
| Code | Character |
|---|---|
| 32 | Dot space |
| 33 | Alarm bell |
| 39 | Aposed |
| 42 | Square |
| 43 | Diamond |
| 45 | Shift |
| 224 | 'SPACE' sign (3 char) |
| 225 | 'ENTER' sign (3 char) |
| 226 | 'TAB' sign (3 char) |
| 227 | 'DEL' sign (3 char) |
| 228 | 'ESC' sign (3 char) |
| 229 | 'MENU' sign (3 char) |
| 230 | 'INDEX' sign (3 char) |
| 231 | 'HELP' sign (3 char) |
| 240 | Hollow left arrow |
| 241 | Hollow right arrow |
| 242 | Hollow down arrow |
| 243 | Hollow up arrow |
| 244 | Head arrow left |
| 245 | Head arrow right |
| 246 | Head arrow down |
| 247 | Head arrow up |
| 248 | Arrow left |
| 249 | Arrow right |
| 250 | Arrow down |
| 251 | Arrow up |
Character modes
VDU 1,ASC"B" | Bold toggle |
VDU 1,ASC"F" | Flash toggle |
VDU 1,ASC"G" | Grey toggle |
VDU 1,ASC"R" | Reverse toggle |
VDU 1,ASC"T" | Tiny font toggle |
VDU 1,ASC"U" | Underline toggle |
, multiple selections available,
