==Font of all knowledge==
[[Image:SOFT968.jpg|right|thumb|200px|SOFT 968 - the Amstrad CPC firmware guide]]This next bit is going to seem rather obvious. It isn't.
Amstrad scored a palpable hit by writing a book telling programmers how to use the firmware. It said, for example, that if you want to turn the colours back to blue-and-yellow, you type CALL &BC02. If you want to wait for a keypress, you type CALL &BB18. (Both of these work. Try them.)