TRS-80 character set
The TRS-80 computer manufacturered by Tandy / Radio Shack contains an 8-bit character set.[1] It is partially derived from ASCII, and shares the code points from 32 - 95 on the standard model. Code points 96 - 127 are supported on models that have been fitted with a lower-case upgrade.[2]
The character set consists of letters, various numeric and special characters[1] as well as 64 semigraphics called squots (square dots) from a 2×3 matrix.[3] These were located at code points 128 to 191 with bits 5-0 following their binary representation,[3] similar to alpha-mosaic characters in World System Teletext.[4][5] These characters were used for graphics in games, such as Android Nim.[6]
Character set[]
The following table shows the TRS-80 model I character set. Each character is shown with a potential Unicode equivalent. Space and control characters are represented by the abbreviations for their names.
| TRS-80 model I character set[7][3][8][9] | ||||||||||||||||
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A | B | C | D | E | F | |
| 0x | BS[a] | LF | CR | con[b] | coff[c] | |||||||||||
| 1x | カ[d] | 32[e] | ←[f] | →[g] | ↓[h] | ↑[i] | home[j] | sol[k] | ceol[l] | ceof[m] | ||||||
| 2x | SP | ! | " | # | $ | % | & | ' | ( | ) | * | + | , | - | . | / |
| 3x | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | : | ; | < | = | > | ? |
| 4x | @ | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O |
| 5x | P | Q | R | S | T | U | V | W | X | Y | Z | ↑ | ↓ | ← | → | _ |
| 6x | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | |
| 7x | p | q | r | s | t | u | v | w | x | y | z | { | | | } | ~ | ± |
| 8x | NBSP |
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