Please enable JavaScript.

Coggle requires JavaScript to display documents.

Stage1 - Coggle Diagram

- - - - trck of files (incl disk blocks)
        
        memcpy(59)
        
        only in kernel
    - - track of files(user , owner)
        
        mem(62)
        
        both kernel and user
    - - usage track of disk blocks
        
        df(61 in mem)
    - - username-encryp-data
        
        mem(60)
  - - - copy (start , end ) filename
    - - export filename
    - - fdisk
  - - - load (1, 0 ) (mempage , disk)
        
        Ip - > 512 (MEM1 )
      - addrs of interupts and excep handlers
    - - Os startup code
        
        mem(1)
    - - Writing in spl
        
        compilng with spl compiler
        
        .xsm file
      - Stage 5
        
        Debugger
        
        r - > registers
        
        c - > continue till next brkp
        
        s -> step
        
        e - > exit
        
        Stage 6
        
        Virtual Addr
        
        Addrs translation
        
        Location of page table entry = PTBR + 2 x (Logical Address / 512)
        
        Physical Page Number = [ Location of page table entry]
        
        offset = Logical Address % 512
        
        Physical Address = Physical Page Number x 512 + offset
        
        Page Table
        
        entry for logical page(2 words)
        
        word1 -> physical PgNo.
        word2 -> RVWD
        
        mem(58)
        
        Init(spl)
        
        mem(65. 66)
        
        disk(7,8)
        
        init
        
        INT 10(halt)
        
        disk(35,36)
        
        mem(22,23)
        
        int=10
        
        excep handler
        
        disk(15,16)
        
        mem(2,3)
        
        exhandler