Texas Instruments TI-99/4A - Page 142

OPEN
Cassette Recorder Information
• file'number'" - any number between t and 255 Inclusive
• fiJe'name* - "CSt" or "CS2"
• file-organization - SEQUENTIAL
• file-type - INTERNAL (preferred) or DISPLAY
• open-mode* - INPUT or OUTPUT
• record·type* - FIXED
*This specification is required.
For cassette tape records. you may specify any length up to t92
positions. However, the cassette tape device uses records with 64,
128. or 192 positions and will pad the record you specify to the
appropriate length. Thus. if you specify an 83'position cassette
record. the computer will actually write a 128'position record. If the
record length is not specified. a 64-po:siLiulI recurd leIlgth i~
assumed.
For cassette devices. the computer nOF:S not compare the file
specifications in the
OPEN statement to the characteristics of an
existing file.
Whenever the
computer performs the OPEN statement for a
cassette tape device. you will receive instructions on your screen for
activating the recorder.
as shown on the right.
Note: Only "CSt" can be specified for an INPUT file. Both '"CSt"
and '"CS2" can be used for OUTPUT files.
II-122
Examples:
>NEOI
>100 OPEN #2:"CS1",INTERNAL,1
NPUT,FIXED
• program Lines
>290 CLOSE 112
>3QO END
>RUN
* REOIIND CASSETTE TAPE CS1
THEN PRE::'::' ENTER
* PRESS CASSETTE PLAY CS1
THEN PRESS ENTER
• rest of program run
• PRESS CASSETTE sTOP (S1
THEN PRESS ENTER
** DONE **
User's Reference Guide