...
SRUN SBIT Effect
0 1 0 Speaker line low
0 1 Speaker line high
1 0 Speaker line oscillates at 3200 Hz
1 1 Speaker line attached to Tx data (Tx data still output
to comms. port)
...
...
SRUN SBIT Effect
0 1 0 Speaker line low
0 1 Speaker line high
1 0 Speaker line oscillates at 3200 Hz
1 1 Speaker line attached to Tx data (Tx data still output
to comms. port)
...