Monoprogramming without Swapping or Paging (see the Fig. 4.3)

Figure 4.3: Three simple ways of organizing memory with an operating system and one user process.

• The simplest possible memory management scheme is to run just one program at a time, sharing the memory between that program and the operating system
• Memory allocation is trivial. No special relocation is needed, because the user programs are always loaded (one at a time) into the same memory location (absolute loading). The linker produces the same loading address for every user program
• Examples:Early batch monitors, MS-DOS