The internal character generator ROM (CG-ROM) has 128 characters stored in it. The Mode Set command (section 8.3) should be set for CG-ROM mode before using this builtin CG-ROM. The character pattern for each character code is shown in the following chart. They are 5x7 characters in an 8x8 character cell.
| V MSB \ LSB > | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A | B | C | D | E | F |
| 0 | blank | ! | " | # | $ | % | & | ‘ | ( | ) | * | + | , | - | . | / |
| 1 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | : | ; | < | = | > | ? |
| 2 | @ | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O |
| 3 | P | Q | R | S | T | U | V | W | X | Y | Z | [ | \ | ] | ^ | _ |
| 4 | \ | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o |
| 5 | p | q | r | s | t | u | v | w | x | y | z | { | : | } | ~ | blank |
| 6 | Ç | ü | é | â | ä | à | å | ç | ê | ë | è | ï | î | ì | Ä | Å |
| 7 | É | ô | ö | ò | û | ù | ÿ | ö | ü | ¢ | £ | ¥ | ƒ |