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The labels and numeric information for data sets and lists can be the same as other
data sets and lists. The CBL 2 does not check for duplicate descriptions. The
uniqueness of the individual directory entries is preserved by their unique directory
entry numbers.
†Notes on Garbage Collection:
Operations 21, 31, and 1001 may cause the CBL 2 to automatically perform garbage
collection on the FLASH memory. For full or heavily used archives (many deleted items),
garbage collection can take over one minute to complete. Therefore, when executing
these operations, you must poll the CBL 2 to determine when the operation is
complete and it is safe to move to the next command. The CBL 2 will return a real
number or a single-element list (depending on the data type used by the calculator)
with the following values:
2 = Performing garbage collection (operation may take extra time to complete)
1 = Performing requested operation (wait for operation complete flag)
0 = Requested operation is complete. Proceed with next command.
Continue to send GET commands until the CBL 2 returns the 0.
Notes on Battery Status:
Operations 11, 12, 13, 21, and 31 will generate an error if the battery status is low. The
other operations do not check the battery status because it is expected that the
program checks the results of these preliminary operations. This allows a full sequence
of operations (such as Allocate/Save/Label/Close list) to complete even if the battery
status should go low after the sequence has started. Therefore, it is important that
programs using these commands check and honor the error conditions reported by
these initial commands. (Use Command 7 to check the battery status.)
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CBL 2 Technical Reference
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