## Virtual Device Driver Reference for OS/2

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### VDHOpenVIRQ Parameter - OptionFlag

OptionFlag (ULONG) Option flag. Indicates whether the IRQ can be shared.

Possible value:

VPIC_SHARE_IRQ Indicates that the virtual device driver is willing to share the IRQ with another virtual device driver. All virtual device drivers that virtualize the same IRQ must pass this flag. Whether a particular IRQ is shared or unshared is determined by the setting of OptionFlag by the first virtual device driver to open the IRQ.