Page 11 - slides.dvi
P. 11

•
                     •
                                                               •
                                                        •
                            –
                                 –
                                                 –
                                            –
                                      –
   Operating
                     No
              Need
                            etc.
                                                               Oldest
              a
                            .
                                                 trash
                                            trash
                                      hoard
   Systems
                                 abuse
                     good
                            .
                                                        Problem:
   —
                                                                                                               Monolithic
                                                 OS
                                                               kind
                     for
                                 I/O
                                      CPU
              better
                                                               of
                                            another
   Structures
                     fault
   &
                                                               OS
                                      time.
                                 devices.
                                                 software.
                                                        applications
              solution.
   Protection
              .
                                                                                                               Operating
              .
                                                        can
                                                               structure
                                            application.
                                                                            S/W
                                                                        H/W
                                                        e.g.
                     containment
   Mechanisms
                     (or
                                                                                          App.
                                                                                                    App.
                                                                                                               Systems
                                                                             Device Driver
                                                               (“modern”
                                                                                  Scheduler
                                                                                                    App.
                                                                                          App.
                     multi-user).
                                                                             Device Driver
                                                               examples
                                                               are
                                                               DOS,




                                                               original








                                                               MacOS)





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