Open the tape device and try to determine whether is is a floppy tape.
Arguments |
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Return Value
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The function returns | ||||||||||||
Side effects
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In case of an error an error string is generated and remembered. Also, a
string identifying the drive type is remembered. Both can be retrieved
by a call to | ||||||||||||
Diagnostics
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The following error messages are generated by
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Example
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Rewind the cartridge and close the tape device.
Arguments |
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Return Value
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The function returns | ||||
Side effects
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The tape cartridge is rewound. In case of an error an error string is
generated and remembered. It can be retrieved by a call to
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Diagnostics
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The following error messages are generated by
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Example
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Read the volume table. This function first reads the header segment of the tape cartridge to determine the location of the volume table segment, and then attempts to read volume table segment.
Arguments |
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Return Value
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The number of volumes found in the volume table segment, or | |||||||||||||
Side effects
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The tape cartridge is rewound before trying to access the header segments.
The internal variable
In case of an error an error string is generated and remembered. It can
be retrieved by a call to | |||||||||||||
Diagnostics
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The following error messages are generated by
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Example
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Flush the volume table to tape. Note that we try to preserve as much of
the original volume table as possible. For this reason, BUFFER
must be a pointer to the area previously filled by
FTVT_READ(). Only those entries are copied from VOLUMES to
BUFFER which have been modified by the library. If no entry has
been modified, the volume table isn't written back to tape
unless DO_WRITE is set to 1
.
Arguments |
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Return Value
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Side Effects
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The tape is rewound after trying to write the volume table.
In case of an error an error string is generated and remembered. It can
be retrieved by a call to | ||||||||||
Diagnostics
|
The following error messages are generated by
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Example
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