ACT apricot - Page 275

KEYBOARD DRIVER
c. Keyboard Unit queue:
This queue is used to pipe data from the Apricot to the
keyboard unit. The queue filler places a single character in
the buffer, if there is no room, the character is ignored,
otherwise the character is transmitted to the keyboard,
where it is either displayed on the Microscreen or, if it is a
control character, is executed.