VM Table layout example
  16 Meg virtual memory space. 2^24

  1 Meg physical memory. 2^20

  16 K page size. 2^14

  2^24 / 2^14 = 2^10 - 1024 virtual pages (1024 slots in table).

  2^20 / 2^14 = 2^6 - 64 page frames. (6 bit frame pointer).

  Table size 1024 slots * 
    ( 6 bit pointer + 1 bit P/A flag + 1 bit dirty flag  ) 
    Additional storage for time stamp or other aging data.    

  Table kept in unswappable memory or a separate memory area, such as
    a custom cache for virtual memory logic.

  Given a memory access, its address is parsed into a virtual memory
    page pointer and an index or offset into the memory page.

  Top 10 bits of an @ point to the page table entry
    which contains a 6 bit frame pointer.

  Lower 14 bits become the offset into the physical (and virtual) page frame.