## Virtual Device Driver Reference for OS/2

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### Share Access

Share Access is an option of the spooler that enables multiple DOS applications to simultaneously access the parallel port. The option is enabled by selecting the Share Access checkbox in the Parallel Port Settings dialog box found on the output page of the Print Object Setting Notebook.

Once enabled, multiple copies of DOS applications that access security devices attached to the parallel port can be started simultaneously. Use of this option turns OFF the serialization of accesses (the protection mechanism) to the parallel port.

One DOS application can overwrite another that is using the parallel port, causing the latter application to fail.