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Because Z-Tape is designed as a backup facility, any saving to tape is done as a complete operation including a catalogue of the files saved. Individual files should not be added to an existing backup tape. Any save operation is a one off event for a tape. Incremental saving is not recommended.
For this reason, any saving is done by file name or group of files. Files to be saved in any one save can be marked as in the FILER or selected on the basis of wild cards such as *. See SAVE TO TAPE, below.
By careful management of a tape, a second set of files may be saved to a tape with its own catalogue. However, it is then up to the operator to ensure that the rewind brings the tape to the correct position when doing anything which involves the catalogue section. This is not recommended.
Unlike saving to disk on a PC, saving a file to tape is a one way process. The Z88 sends the data out of the serial port and has no way of knowing whether the data has landed safely, if at all. Therefore the verify option is an important routine which should be used whenever a set of files is saved.
If the verify routine is not tried, the first indication of damage will appear when that file is loaded back to the Z88.
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