Galvin Edition 9 Exercise 8 Question 28 (Page No. 393)

Question

Consider the following segment table:

                    $Segment$                         $Base$                  $Length$

                           $0$                                    $219$                       $600$

                           $1$                                  $2300$                         $14$

                           $2$                                      $90$                        $100$

                           $3$                                 $1327$                        $580$

                           $4$                                 $1952$                          $96$

What are the physical addresses for the following logical addresses ?
$a. 0,430$
$b. 1,10$
$c. 2,500$
$d. 3,400$
$e. 4,112$

Answer 1

• (a) 219 + 430 = 649
• (b) 2300 + 10 = 2310
• (c) illegal reference; traps to operating system  //is 100>500?  no , its illegal 
• (d) 1327 + 400 = 1727
• (e) illegal reference; traps to operating system // is 96>112? no