FLUSH

Syntax FLUSH [#ch]
Location Toolkit II

The command FLUSH forces all of the QL’s temporary buffers attached to the specified channel (default #3) to be emptied into that channel. This will only work on channels attached to files, any other type of channel will return error -15 (bad parameter).

This command is necessary due to the use by QDOS of slave blocks whenever a file is opened. Data can be stored partly in the slave blocks to aid speed and when writing to a file, which will only be written to that file once the channel has been CLOSEd or the slave blocks have become full.

Because of this, there is always a danger that part of the data will be lost if there is a power failure or other accident. FLUSH helps you to avoid this.

NOTE

FLUSH will not work with Micro Peripherals disk drives. Nor can it be used to flush the Networks.

CROSS-REFERENCE

See OPEN and CLOSE.