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Nipanka Barman DC2010BTE4063

Tannu Newar DC2010BTE4073

Deepshikha Das DC2010BTE4061

Designing of 8-bit

microprocessor using VHDL

11/26/2013 1Department of Electronics and communication

Guided By :

Dr. Indrani Dakua

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Department of Electronics and communication11/26/2013

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Nipanka Barman

Tannu Newar Designing of 8-bit microprocessor using VHDL

Deepshikha Das

Contents

Instructions to be Implemented4

Introduction

Scope of the project

Application and advantage5

Conclusion6

1 Introduction

Literature review2

Scope of the Project3

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Department of Electronics and communication11/26/2013

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Nipanka Barman

Tannu Newar Designing of 8-bit microprocessor using VHDL

Deepshikha Das

Scope of the project

INTRODUCTION

8 bit Microprocessor

VHDL CODE FPGA

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Nipanka Barman

Tannu Newar Designing of 8-bit microprocessor using VHDL

Deepshikha Das

Scope of the project

What is Microprocessor?

Computer's central processing unit (CPU) on asingle integrated circuit (IC).

It is a multipurpose programmable device. Operates on numbers and symbols

represented in the binary numeral system.

Used for computation, text editing,multimedia display, and communication over

the Internet. Part of embedded systems.

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ALU Accumulator

Timing &

Control

unit

General &

SpecialPurpose

register

Microprocessor

Department of Electronics and communication11/26/2013

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Nipanka Barman

Tannu Newar Designing of 8-bit microprocessor using VHDL

Deepshikha Das

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Department of Electronics and communication11/26/2013

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Nipanka Barman

Tannu Newar Designing of 8-bit microprocessor using VHDL

Deepshikha Das

Scope of the project

What is VHDL ?

VHDL (Very High Speed Integrated Circuit HardwareDescription Language) is a hardware Description

language used in electronic design automation

To describe digital and mixed-signal system such asfield-programmable gate array (FPGA) and integratedcircuits.

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Department of Electronics and communication11/26/2013

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Nipanka Barman

Tannu Newar Designing of 8-bit microprocessor using VHDL

Deepshikha Das

What is FPGA?

Semiconductor device

Contains :

Programmable Logiccomponents

Program interconnection

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Nipanka Barman

Tannu Newar Designing of 8-bit microprocessor using VHDL

Deepshikha Das

Scope of the project

Literature Review This project is designing an 8-bit microprocessor in VHDL.

The processor that will be designed will closely resemble thefunctionality of an 8085.

All of the functionality will come from the VHDL code that is writtenwill be interfaced with the FPGA board.

The processor will have most all of the arithmetic and logicfunctions that are on an 8085.

It will also implement timer functionality.

There will also be interrupts designed into it as well if time permits.

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Department of Electronics and communication11/26/2013

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Nipanka Barman

Tannu Newar Designing of 8-bit microprocessor using VHDL

Deepshikha Das

Scope of the project

Literature Review

The FPGA, once programmed, should behave much the same as anactual microprocessor.

Includes an ALU, working registers, and memory.

Each part will be designed separately and tested for functionality.

After all parts are working they will be combined together forminga simple microprocessor

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Burn

On

FPGA

Simulated

Using

ModelSim

Coding in

VHDL

Task

1

Task

2Task

3

Task

4

Department of Electronics and communication11/26/2013

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Nipanka Barman

Tannu Newar Designing of 8-bit microprocessor using VHDL

Deepshikha Das

Scope of the project

Testing

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Nipanka Barman

Tannu Newar Designing of 8-bit microprocessor using VHDL

Deepshikha Das

Scope of the project

BLOCK DIAGRAM

The inputs and outputs will begoing into and coming out of the

FPGA.

The registers, ALU, and memorywill actually be programmed onthe FPGA.

The individual parts will bedesigned separately and thenintegrated.

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Nipanka Barman

Tannu Newar Designing of 8-bit microprocessor using VHDL

Deepshikha Das

Scope of the project

Scope of the Project Design an 8 bit microprocessor using VHDL.

The design would then be implemented by putting it on anFPGA.

The preliminary goal will be to have a microprocessor capableof executing simple mathematical operations.

The desired instructions to be executed and the data to beoperated on should be given to the system as inputs.

The result of the executed instructions should be the output.

The final goal is to program an FPGA.

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Nipanka Barman

Tannu Newar Designing of 8-bit microprocessor using VHDL

Deepshikha Das

Instructions to be implemented

LOAD

STORE

ADD

SUBJZ

IN

HALT

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Nipanka Barman

Tannu Newar Designing of 8-bit microprocessor using VHDL

Deepshikha Das

Scope of the project

Application and Advantage

Used in Embedded system

Cheaper than microprocessor chip.Less Power consuming.More flexible.More efficient.

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Tannu Newar Designing of 8-bit microprocessor using VHDL

Deepshikha Das

Scope of the project

Conclusion

The 8 bit microprocessor is an important

part of computerCPUs

. It is widely usedin microcontrollers. Our aim is to design aSystem that will be more flexible, cheaperand consume less power.

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Nipanka Barman

Tannu Newar Designing of 8-bit microprocessor using VHDL

Deepshikha Das

Scope of the project

References

1. 8 bit Microprocessor Design using VHDL.

BY: Mohamad Hasman Bin Abdul Manas

2. VHDL IMPLEMENTATION OF 8BIT ALU

BY: Suchita Kamble, Prof.N.N.Mhala

3. VHDL DESIGN OF FPGA ARITHMETIC PROCESSORBY: Prof.S.Kaliamurth, Ms.U.Sowmmiya