=> R1 = &20102 (reason code)
R0 = device ID
R2 = device ID mask
Issued when a new device or bus is registered with SCSIDriver. A hardware driver may issue this itself to indicate that a device has been attached to an ID already registered with SCSIDriver.
The mask indicates whether a bus, a device or a unit (potentially multiple) has been attached; someone wanting to rescan the bus should scan all devices with IDs such that <device ID> AND R2 = R0.
Examples:
Bus 0, device 1 attached
Bus 3, device 4, unit 5 attached
Bus 2 attached
R0 = &01 (0:1.0)
R0 = &BC (3:4.5)
R0 = &10 (2:0.0)
R2 = &1F (3:7.0)
R2 = &FF (3:7.7)
R2 = &18 (2:0.0)
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