Operations performed by 8085 the alu performs the arithmetic and logical operations. This book will not focus on studying any particular processor architecture. Microprocessor based system design ricardo gutierrezosuna wright state university 2 mc68000 general information g specifications n 32bit data and address registers n 16bit data bus n 24bit address bus 16mb n 14 addressing modes n memorymapped inputoutput n program counter n 56 instructions n 5 main data types n 7 interrupt levels n clock speeds. Also the program, data and the stack memories occupy equal memory.
A significant design feature was that the m6800 family of ics required only a single fivevolt power supply at a time when. The mc6800 contains six programavailable registers. The 6800 sixtyeight hundred is an 8bit microprocessor designed and first manufactured by motorola in 1974. It determines the number of operations per second the processor can perform. Z80 microprocessor 20200504 20200504 tagged chip hall of fame. This section will provide a brief introduction and. Program, data and stack memories occupy the same memory space. The mc6800 mpu is the nucleus of a series of fully bus compatible, silicon. Microprocessors and microcomputer based system design.
Microprocessor block diagram 20200504 20200504 tagged microcontroller and microprocessor actwithrobots. It is highly pipelined architecture and much faster speed bus than 8086. As technology has progressed, microprocessors have become faster, smaller and capable of doing more work per clock cycle. Basic concepts of microprocessors differences between. Pdf version basic microprocessors and the 6800, by. Microprocessor consists of an alu, register array, and a control unit. Goankar, microprocessor architecture, programming and applications with 8085, 5th edition, prentice hall week 1 basic concept and ideas about microprocessor. The manual also includes descriptions of basic m6800 microcomputer family. February 10, 2003 intel 8086 architecture 2 an x86 processor timeline 1971. The mc6800 microprocessor was part of the m6800 microcomputer system. This microprocessor had major improvement over the execution speed of 8085. The binary information is represented by binary digits, called bits. Architecture of a microprocessor basic lec 20 designing microprocessor based systems microprocessors and microcontrollers prof.
Once they are learned, transition to the mc68000 or any other microprocessor manufactured by any of the ic houses is easy. Mc6800 microprocessor, plus some unique enhancements. The book first elaborates on 4bit and 8bit microprocessors and microcomputers. Week 2 architecture of 8085 week 3 addressing modes and instruction set of 8085 week 4 interrupts of. The 11 most influential microprocessors of all time from the brains of the voyager space mission to the inspiration for modern cpus, here are the chips that built our modern technological culture.
The internal architecture of 8085 includes the alu, timing and control unit, instruction register and decoder, register array, interrupt control and serial io control. Lecture note on microprocessor and microcontroller theory. Microprocessor system session of motorola 6800 by engr. Mos 650x architecture motorola 6809 architecture intel 8080 architecture intel 8085 architecture zilog z80 architecture all architectures. The 6800 had 16bit address bus and could address up to 64 kb of memory. Machine language the programmer had to remember the machine codes for various. It has pipelined architecture not highly and high speed bus interface on single chip. It is the set of instructions that the microprocessor can understand.
Pdf m6800 mc6800 mc6821bqca mc68121 mc68705u3 mc146805g2p mc68120l1 mc146805g m68705p3 68705 mc6854 m6809. The addressing modes of any microprocessor provide it with the capability to efficiently address memory to obtain data and instructions. The motorola 6809 code for the same construct is given in listing 3. Also the information can be placed anywhere as it uses 16 bit addresses. It is a 32 bit microprocessor and it is logical extension of the 80236. Tutorial on introduction to 8085 architecture and programming. Microcomputer a computer with a microprocessor as its cpu. Comprehensive study of microprocessor by naresh grover 4. Intels 4004 was the first microprocessora 4bit cpu like the one from cs231 that fit all on one chip. Mc6809mc6809e microprocessor programming manual m6809pm. Motorolas m6800 microprocessor and the related family of integrated circuits that can be used to. Computer architecture is defined by the instructions a processor can execute programs written for one processor can run on any other processor of the same architecture current architectures include. Microcomputer produced the first microprocessor, the intel 4004, which was powerful enough to function as a computer although it was produced for use in a japanesemade calculator.
A tour of my mc6800 microcomputer system a tour and demonstration of my homebrew mc6800 based microcomputer system that i built from 1975 to 1978. From common registers the cpu had only two accumulators and one index register. A typical microprocessor architecture is shown in figure 1. Its data bus width is 8bit and address bus width is 16bit, thus it can address 216 64 kb of memory. Architecture, programming and interfacing introduction to the microprocessor and computer outline of the lecture evolution of programming languages. Advance information powerpc 601 risc microprocessor. Introduction to microprocessors the microprocessor is one of the most important components of a digital computer.
Cpu architectures several cpu architectures exist currently. It is the number of bits processed in a single instruction. The first microprocessor was the intel 4004, introduced in. The mc6800 instructions are described in detail in the m6800 programming manual. In 1975 the first personal computer, the altair, used a successor chip, the intel 8080 microprocessor. The 6800 sixtyeighthundred was an 8bit microprocessor designed and first manufactured by motorola in 1974.
Pdf ar103d motorola 6809 motorola 6809 instruction set motorola 6809 8 bit instruction set 6809 processor motorola intel 8080 intel 8080 microcomputer systems users manual pdp11 instruction set motorola 6800 micro 6809 intel 8080 microcomputer. Microprocessor architecture, programming and applications with 8085 by rs gaonkar 2. The mc6800 instructions are described in detail in the. The mc6809 and mc6809e microprocessors are greatly enhanced, upward compatible, computationally faster extensions of the mc6800 microprocessor. It attempts to achieve high performance with the use of a simplified instruction set, similar to those found in microengines. Introduction to m68000 microprocessor physics116b, 22805 d. The data bus the data bus of the mc6800 and mc6809 microprocessors is 8 bits in width whereas the mc68000 uses a 16bit data bus. Microprocessor data book, second edition focuses on the available types of microprocessors and microcomputers, including description of internal architecture, instruction set, main electrical data, and package details of these instruments. Microprocessor is a controlling unit of a microcomputer, fabricated on a small chip capable of performing alu arithmetic logical unit operations and communicating with the other devices connected to it. Introduction to m68000 microprocessor uc davis physics.
The microprocessor, also known as the central processing unit cpu, is the brain of all computers and many household and electronic devices. From its early 8bit beginnings, the intel architecture now encompasses a range of 32bit and 64bit microprocessors. Coverage encompasses hardware, software and programming topics, including a full chapter on 6800 interrupts. Introduction to microprocessor by adithya p mathur, tata mcgraw hill publishers, new delhi 5. Multiple microprocessors, working together, are the hearts of datacenters, supercomputers, communications products, and other digital devices. Motorola m6800 microprocessor applications manual motorola inc. In this microprocessor the program can be located from anywhere in the memory. Motorolas next generation 8bit microprocessor architecture, the mc6809. The 11 most influential microprocessors of all time. Enhancements such as additional registers a y index register, a u stack pointer, and a direct page register and instructions such as mul simplify software design. Features of 8086 processor intel 8086 was launched in 1978.
This book will attempt to discuss the basic concepts and theory of microprocessor design from an abstract level, and give realworld examples as necessary. Motorola literature, wilkinson, horowitz and hill this part can be considered an elaborate. Programs developed for the mc6800 can be easily converted for use with the mc6809 or mc6809e by running the source code through a m6809 macro assembler or any one of the many cross assemblers that are available. Motorola 6800 microprocessor architecture cpu world. It is important to learn the operation and interfacing of ei ther the mc6800 or mc6809 microproces sor first, since the remainder ot this text em phasizes these microprocessors. It is a 16 bit microprocessor and it is first 16 bit microprocessor after 80858bit. In part ii we will see that microprocessor architecture is modelled on. The 6800 microprocessor merrills international series in. Two large microprocessor application markets have emergedthe dedicated market and the systems market. Alu performs arithmetical and logical operations on the data received. Mc6802 microprocessor has three 16bit registers and three 8bit registers available for use by the programmer. The mc6800 microprocessor was part of the m6800 microcomputer system that also included serial and parallel interface ics, ram, rom and other support chips. Intended for first microprocessor courses at the technology level, this text provides an introduction to microprocessors using the 8bit motorola 6800.
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