Welcome to Computer Systems, by J. Stanley Warford, where you can learn about the textbook and download resources.

Fifth Edition

Computer-Systems-CoverComputer Systems, fifth edition offers a clear, detailed, step-by-step introduction to the central concepts in computer organization, assembly language, and computer architecture. It invites students to explore the many dimensions of computer systems through a top-down 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 high-order language — The high-order 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 real-world 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, UTF-32 and UTF-8 encoding, floating point underflow, big-endian and little-endian 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  • New virtual machine — Pep/8, the virtual machine for the two previous editions, is now superseded by the new and improved Pep/9.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 memory-mapped I/O, an improved return-from-subroutine instruction, a new native compare-byte instruction, improved instruction mnemonics, and a new hexadecimal output trap instruction.

See the errata for the fifth edition.

See the publisher’s web site for the fifth edition.

See the Amazon web site for the fifth edition.

Pep/9 Downloads Resources