The three machine language subroutines listed here
produce audio signals at the output normally used to write
to tape from the cassette interface. For the best effect,
try connecting the output to the input of an audio amplifier.
You came pretty close in the comment you made on the
back of the last newsletter---I haven'tsold the Apple-1
yet, but I will before much longer. About the first of the
year, I got an Apple-2 and have spent most of the time get-