시스템프로그래밍

•The design of system software is greatly influenced by the architecture of the machine(= computer) on which it runs.– For example, assemblerstranslat

not readablecompiler -> Assembler -> Linker -> Loadersome steps can be compiled or skippedSystem S/W for turning programs written in assembly language

SIC/XE로 바뀐 버전으로!Assemblers depend on instruction format and addressing mode.Figure 2.6 shows the example program from Fig. 2.1 with object code as it

수업 다시 듣기SIC, SIC/XE Machine Architectures2-pass Assembler algorithmDefine symbols Symbol tableAssemble instructions & generate object programAddressi

There are some common assembler features that are notclosely related to machine architectureThe presence or absence of such features is much more clos

A translation hierarchy for high-level language program like CFirst compiled into an assembly language program and then assembled into an object modul

A program that acts as an intermediary between applications and computer hardware1) UsersPeople, machines, other computersWant to solve computing prob

There is no best/absolute answer for design and implementation of OSBut some approaches have proven successfulInternal structure of different operatin

The main job of a computer is I/OIts another (major) job, Computing or Processing, is merely secondaryThe role of OS in computer I/O is to control dev

The operating system is responsible for the following activities in connection with process management:Creating and deleting both user and system proc

Processes within a system may be independentor cooperatingIndependent process cannot affect or be affected by the execution of another processCooperat