Computer Systems

Computer Systems, Fifth Edition provides a clear, detailed, stepbystep introduction to the central concepts in computer organization, assembly language, and computer architecture. It urges students to explore the many dimensions of computer systems through a topdown approach to levels of abstraction. By examining how the different levels of abstraction relate to one another, the text helps students look at computer systems and their components as a unified concept. New & Key Features: New highorder language ― The highorder language is changed from C++ to C. The C language is more common as a systems programming language and is more appropriate for a computer systems text. New sidebars ― Each sidebar is a realworld example of the concepts described in that chapter. As most of the chapters describe the Pep/9 virtual machine, the sidebars for those chapters show corresponding implementations for the Intel x86 architecture. New and expanded topics ― New and expanded topics include, QR codes, color displays, Unicode, UTF32 and UTF8 encoding, floating point underflow, bigendian and littleendian order, memory alignment issues, and expanded RISC design principles and MIPS coverage to contrast with the Pep/9 CISC design. New virtual machine ― Pep/8, the virtual machine for the two previous editions, is now superseded by the new and improved Pep/9. Pep/9 retains the same eight addressing modes of Pep/8 but now includes memorymapped I/O, an improved returnfromsubroutine instruction, a new native comparebyte instruction, improved instruction mnemonics, and a new hexadecimal output trap instruction. New software ― The Pep/9 system in the text is supported by two updated open source software applications, the assembler/simulator and the CPU simulator.