!edited 18-Dec-89
!SYSDEVHAN_fig.psart (chapter 2)

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    #   I/O PAGE       #
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            MEMORY
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    #  SYSTEM          #
    #  DEVICE HANDLER  #
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476 # INTERRUPT        # 
 60 # VECTORS          #  
    +------------------+ 
 56 # SYSTEM           #
    # COMMUNICATION    # 
 40 # AREA             # 
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 36 # TRAP             #
    # VECTORS          #    
  0 +==================+