Cassette Operation; Recording Method; Data Memory Recording Format - Sharp PC-1211 Service Manual

5
18
1 bit
4KHz
DATA"
i "
2KHz
DATA"O"
1
=
Check sun code (after every 8 steps or one data memory.)
2
=
8 steps of program or reserve program
3
=
End code of recording.
4
=
This gap, composed of
all
"l ",is inserted at each step the recording exceeds 80 steps, during
which teime the next 80 steps of data to be input is prepared in the input buffer.
5
=
All "l" is recorded for a period of about 6 seconds in order to avoid non-recordable area
located at the top of the tape and is also used for the cueing of the recording head.
6
=
With this program or reserve program name is indicated.
7
=
File name
8 = Data memory is indicated with this code.
9
=
Area for one data memory.
Recording method
Data "O" and "l" are identified by changing the frequency of the recording signal (F4").
Data memory recording format
Recording format of program or reserve program
Contents of program or reserve program
80 steps
4
1+1
5-1. Recording
Recording metho d
5. CASSETTE OPERATION