The Amstrad CPC character set (alternatively known as the BASIC graphics character set)[1] is the character set used in the Amstrad CPC series of 8-bit personal computers when running BASIC (the default mode, until it boots into CP/M).
This character set existed in the built-in "lower" ROM chip.
[2][3] Apart from the standard printable ASCII range (0x20-0x7e), it is completely different from the Amstrad CP/M Plus character set.
The BASIC character set had symbols of particular use in games and home computing, while the CP/M Plus character reflected the International and Business flavor of the CP/M Plus environment.
The three missing characters have however been accepted for inclusion in Unicode 16.0 in the symbols for legacy computing supplement.