Device Manager
OpenDriver Open the device driver specified by name FSRead Read from open device driver to memory FSWrite Write data from memory to a device driver Control Send control information to the device driver Status Send status information from the device driver to the system KillIO Terminate all current and pending device driver reads and writes
PBOpen Open the named device driver PBClose Close an open device driver PBRead Read data from a device driver PBWrite Write data to a device driver PBControl Send control information to the device driver PBStatus Send Status information to the device driver PBKillIO Stop all current and pending I/O with the device driver SIntRemove Remove an element from the interrupt queue