How main and virtual memory solve memory management issues

 

In the memory management diagram, the base and limit registers are used to provide the range of legal addresses the process may access (Silberschatz et al. 2014). The hardware address protection diagram shows how addresses are compared with registers, with a trap to capture any programs attempting to access the operating system in user mode. The multistep processing diagram displays steps a user program may go through before being executed (Silberschatz et al. 2014). Dynamic relocation diagram shows how “the value in the relocation register is added to every address generated by a user process at the time the address is sent to memory” (Silberschatz et al. 2014).


Virtual memory can provide many benefits to the system and user by providing larger address space, allowing more programs to be run at the same time, and using less I/O to load or swap user programs into memory (Silberschatz et al. 2014).


References
Silberschatz, A., Galvin, P. B., & Gagne, G. (2014). Operating system concepts essentials (2nd ed.). Retrieved from https://redshelf.com/






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