Operating Systems Gs Monoprogramming without Swapping or Paging OXFFF Operating Device system in drivers in ROm ROM ser program ser User program Operating Operating system in system in RAM RAM Three simple ways of organizing memory an operating system with one user process (a) formally used on mainframes and minicomputers but is really used any more (b)used on some palmtop computers and embedded systems (c)used by early PC(MS-DOS), where the portion of the system in the ROM is called the bios Gao Haichang, Software School, Xidian UniversityOperating Systems Gao Haichang , Software School, Xidian University 6 Monoprogramming without Swapping or Paging Three simple ways of organizing memory - an operating system with one user process - (a) Formally used on mainframes and minicomputers but is really used any more. - (b) used on some palmtop computers and embedded systems. - (c) used by early PC (MS-DOS), where the portion of the system in the ROM is called the BIOS