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Generic SCSI Class Driver Device Information  



A call to the Get Device/Volume Information ($GETDVI) system service returns the following information for any device serviced by the generic SCSI class driver. (Refer to the description of the $GETDVI system service in the HP OpenVMS System Services Reference Manual.)

$GETDVI returns the following device characteristics when you specify the item code DVI$_DEVCHAR:

DEV$M_AVL
Available device
DEV$M_IDV
Input device
DEV$M_ODV
Output device
DEV$M_SHR
Shareable device
DEV$M_RND
Random-access device

DVI$DEVCLASS returns the device class, which is DC$_MISC; DVI$DEVTYPE returns the device type, which is DT$_GENERIC_SCSI.


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