This function returns some information about the device. The logical unit number (LUN) is required if a Send Other command is used.
Input Parameter Structure
Field
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FUNCTION CATEGORY : 80h FUNCTION CODE : 43h
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This function requires a device handle to be passed in the request. The device must be allocated by the device-class driver before calling this function. The function category and function code are to be set up as shown above.
┌────────────────────────┬────────────────────────────────────┐ │Field Name │Length │ ├────────────────────────┼────────────────────────────────────┤ │Device Key Index │WORD │ ├────────────────────────┼────────────────────────────────────┤ │SCB Architecture Card │BYTE │ │Comp. Level │ │ ├────────────────────────┼────────────────────────────────────┤ │Adapter Index │BYTE │ ├────────────────────────┼────────────────────────────────────┤ │Device Flags │WORD │ ├────────────────────────┼────────────────────────────────────┤ │Logical unit number │BYTE │ │(LUN) │ │ ├────────────────────────┼────────────────────────────────────┤ │Physical unit number │BYTE │ │(PUN) │ │ └────────────────────────┴────────────────────────────────────┘
Adapter Index
contains the adapter number for the SCSI adapter.
Device Flags
Bit 4