CSE378 Gen. Intro1 Machine Organization and Assembly Language Programming Machine Organization –Hardware-centric view (in this class) –Not at the transistor.

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Presentation transcript:

CSE378 Gen. Intro1 Machine Organization and Assembly Language Programming Machine Organization –Hardware-centric view (in this class) –Not at the transistor (bit) level but at the building block level (registers, adders, memory words etc.) Assembly Language –A way to learn about the Instruction Set Architecture, the interface between the hardware and the software.

CSE378 Gen. Intro2 Hierarchical Layers Top Layer: Application programs –Written in high-level languages: C, C++, Java, html etc Basic Software Layer –Translates programs written in high-level languages into machine language made up of a sequence of instructions (assembly language is a symbolic rendering of machine language). The translators are programs called compilers. –A program, the Operating System, controls the execution of the translated application programs. The O.S. is responsible for functions such as I/O, allocating storage, scheduling etc. Hardware –Executes the instructions

CSE378 Gen. Intro3 Layered View Application Programs Operating System Compilers Computer Structure Machine Language ISA

CSE378 Gen. Intro4 Programmatic view

CSE378 Gen. Intro5 What is Machine Organization (aka Computer Organization, aka Computer Architecture)? Structure: static arrangement of the parts of a computer system Organization: dynamic interaction of the parts and their control Implementation: design of specific building blocks Performance: behavioral study of the system or of some of its components

CSE378 Gen. Intro6 Alternate definition: Instruction Set Architecture (ISA) ( subset of previous def.) ISA is the interface between hardware and software ISA is what is visible to the programmer (and ISA might be different for O.S. and applications) ISA consists of: –instructions (operations and how they are encoded) –information units (size, how they are addressed etc.) –registers (or more generally processor state) –input-output control

CSE378 Gen. Intro7 Computer structure: Von Neumann model Memory hierarchy I/O controlALU Registers PC state Memory bus I/O bus CPU Data path + Control input output Memory

CSE378 Gen. Intro8 Computer Organization/Architecture Organization and architecture often used as synonyms Organization (in this course) refers to: –what are the basic blocks of a computer system, more specifically basic blocks of the CPU basic blocks of the memory hierarchy –how are the basic blocks designed, controlled, connected? Organization used to be transparent to the ISA. Today more and more of the ISA is “exposed” to the user/compiler in order to improve performance.

CSE378 Gen. Intro9 Advances in technology

CSE378 Gen. Intro10 Evolution of Intel Microprocessor Speeds

CSE378 Gen. Intro11 Illustration of Moore’s Law

CSE378 Gen. Intro12 Power Dissipation

CSE378 Gen. Intro13 Some Computer families Computers that have the same (or very similar) ISA –Compatibility of software between various implementations IBM –704, 709, 70xx etc.. From 1955 till 1965 –360, 370, 43xx, 33xx From 1965 to the present –Power PC DEC –PDP-11, VAX From 1970 till 1985 –Alpha (now Compaq, now HP) in 1990’s

CSE378 Gen. Intro14 More computer families Intel –Early micros 40xx in early 70’s –x86 (086,…,486, Pentium, Pentium Pro, Pentium 3, Pentium 4) from 1980 on –IA-64 (Itanium) in 2001 SUN –Sparc, Ultra Sparc n MIPS-SGI –Mips 2000, 3000, 4400, from 1985 on