• This is my Operating System Course Project.
• A Virtual Implemention of routines of OS.
• Project consited of three phases. Phase3 is final phase for project.
• Works for any no. of jobs. Supports input spooling, output spooling, paging.
• First two phases consist of only C code.Phase 3 consist of python wrapper over original code.

MOS(Multiprogramming Operating System)

• Used for execution of multiple jobs
• Job should be defined ,well structured.
• System Will Report Error ,For Wrong Jobs With Proper Error Messages.
• Series of Jobs should be kept in input.txt.
• Afer processing of jobs output can be seen output.txt
• Random memory allocation for program card used using paging.

Job can consist of Instruction

• GD-Get Data
• PD-Print Data
• LR-Load Register From Memory
• SR-Store Register From Memory
• CR-Compare Register And Memory
• BT-Branch Toggle(Checks Toggle Variable)
• H- Denotes end of job.
• Job should start with $AMJ
• There is $DTA after declaration of program cards and before data cards
• Job should end with $END

Tools used

• Gcc compiler
• Emacs
• Gdb