h6. [[PCI]] h6(. » [[PCI SWI Calls|SWI Calls]] h6((. » PCI_ReturnNumber h2. PCI_ReturnNumber h5. (SWI &50382) |_<^{width:4em}. Entry | | |<^. - |<^. - | |_<^{width:4em}. Exit | | |<^. R0 |<^. Number of [[Using PCI Devices|Function handles]] that have been used| h4. Use The purpose of this call is to return the number of function handles that have been used. h4. Notes Device drivers may search handles 1 to R0 inclusive to find a device.