8085

MICROPROCESSOR

PROJECT

GOATS AND TIGER GAME

MADE BY:

AJAY SINGH (15/EC/13)

AKASH NIRBHIK (16/EC/13)

SYNOPSIS

Aim – To make Goat and Tiger game using 8085

Microprocessor.

Description of Game –

The figure given represents the game board. The tiger and

goats can be placed on the intersections represented by black

dots. It’s a two player game, one player will control 1 tiger and

the other will control 5 goats. The goats and tigers can only be

moved along the lines of the board.

Gameplay – All the goats are placed on the board individually

at the beginning. You can only move the goats after you place

all the goats on the board. A tiger can capture a goat if there is

an empty intersection for the tiger to jump. The tiger wins if it

captures two goats, and goats win if they corner the tiger (i.e

when tiger is at a position where it cannot move anywhere).

There is a time limit of 1 minute for each player to play their

turn.

Implementation-

All the positions on the board are realized through 10 bicolour

leds. Each position will have a switch to select the same. The

goats and the tiger will be represented with different colours.

Two leds will be used to denote the turn. 6 leds will be used to

convey time limit(Initially all 6 leds will be on at the starting of

each players turn, then after an interval of 10 seconds each led

will go to off state thus all 6 leds comprising 1 minute). Two 7-

segmet displays will show the score of both the players.

ACKNOWLEDGEMENT

Firstly, we would like to thank Prof. Dhananjay Gadre for his unconditional support and thorough guidance without which this project would not have seen the light of the day. He not only guided us through the project but also played a vital role in helping us relate the theoretical concepts with their practical concepts and instilled in us enthusiasm to LEARN BY DOING. This project was definitely a milestone in our career and we learnt a lot more than just electronics, values of hard work and team work. We would also like to thank our friends and classmates especially Ayush gupta, Tyagi ,Ankush and Abhishek Pandey who worked with us and helped at each and every point of time we needed help and assistance. From helping us learn EAGLE, guiding to get PCB ready, helping us through the soldering sessions, getting corrections in software and also final checks on the clock and what not, they were always with us. It was a really good memorable experience working with all of them. We would also like to thank all the staff of the Department of

Electronics of Netaji Subhas Institute of Technology for

providing us with all the requisites for completion of this project.

BLOCK DIAGRAM

SCHEMATIC

BOARD

Final board

CODE ;Goats and Tiger Game Code

MVI A,80H ;INITIALLY TOP LED IS RED

STA ADDR

OUT 00H

MVI A,00H ;INITIALLY ALL GREEN LED OFF

OUT O1H

OUT 02H ;INITIALLY REMAINING TWO GREEN AND RED LEDS OFF

MVI A,80H ;CONTROL WORD FOR 8255_1

OUT 03H ;CONTROL REGISTER FOR 8255_1

MVI A,92H ;CONTROL WORD FOR 8255_2

OUT 43H ;CONTROL REGISTER FOR 8255_2

MVI E,05H

LXI SP,8000H

LXI H,FFFFH ;TO UPDATE THE NO. OF GREEN LEDS ON

MVI D,80H

LOOP: IN 40H ;PORT A OF 8255_2 (8 SWITCHES)

MOV B,A

IN 41H ;PORT B OF 8255_2 (REMAINING 2 SWITCHES)

ORI FCH

MOV C,A

ANA B

CMA

JZ LOOP ;SWITCH LOOP ENDS

MVI A,FFH ;FOR DOUBLE LOOP FOR MOVING GREEN LEDS

SUB E

JZ LOOP1

MOV A,D

JP NEXT

CALL GREEN

JMP AGAIN

NEXT: CALL RED

AGAIN: MOV A,D

CMA

MOV D,A

JMP LOOP

RED: MVI A,00H ;SUBROUTINE FOR RED

OUT 00H

MOV A,L

CMA

ANI 30H

OUT 02H

MOV A,B

CMA

OUT 00H ;PORT A OF 8255_1 (FOR RED LEDS)

MOV A,C

STA ADDR

CMA

ANI 03H

OUT 02H ;PORT C OF 8255_1 (FOR REMAINING 2 RED LEDS)

RET

GREEN: MVI A,00H ;SUBROUTINE FOR GREEN

OUT 01H

LDA ADDR

CMA

ANI 03H

OUT 02H

MOV A,E

JZ CHANGE

MOV A,B ;PLACING OF 5 GREEN LEDS

ANA H

CMA

MOV B,A

MOV A,C

ANA L

CMA

ANI 03H

MOV C,A

MOV A,B

OUT 01H ;PORT B OF 8255_1 (FOR GREEN LEDS)

MOV A,C

RLC

RLC

RLC

RLC

OUT 02H ;PORT C OF 8255_1 (FOR REMAINING 2 GREEN LEDS)

MOV A,B

CMA

MOV H,A

MOV A,C

CMA

MOV L,A

DCR E

RET

CHANGE: MVI A,00H

OUT 01H

LDA ADDR

CMA

ANI 03H

OUT 02H

PUSH D ;MOVEMENT OF GREEN LEDS(SWITCHING OFF LED)

MOV A,B

CMA

ORA H

MOV H,A

CMA

OUT 01H

MOV A,C

CMA

ORA L

MOV L,A

CMA

RLC

RLC

RLC

RLC

OUT 03H

MVI E,FFH

JMP LOOP

POP D

LOOP1: MOV A,B ;MOVEMENT OF GREEN LEDS(SWITCHING ON LED)

ANA H

CMA

MOV B,A

MOV A,C

ANA L

CMA

ANI 03H

MOV C,A

MOV A,B

OUT 01H

MOV A,C

RLC

RLC

RLC

RLC

OUT 02H

MOV A,B

CMA

MOV H,A

MOV A,C

CMA

MOV L,A

RET

CONCLUSION

EC-316 MICROPROCESSORS PROJECT has been a thoroughly enriching experience. We thank Prof. Gadre for such an opportunity which made us learn in depth about microprocessors and assembly language programming as well as small electronics things which are generally bypassed by the big concepts like led voltages, role of resistors, capacitors etc. It gave a good experience in digital as well as analog electronics. Learning by doing was accomplished. We gathered all the basic knowledge about the microprocessor

8085 and brushed up digital logic concepts which was to be

used in this project. The schematic diagram of various

components and connections was drawn on PCB software

EAGLE. The project gave us a good hand on experience to

work on EAGLE.

BIBLIOGRAPHY

TEXTBOOKS: 1. Microprocessor Architecture, Programming, and Applications with the 8085 Author: Ramesh Gaonkar Publisher: Penram International Publishing (India) Pvt. Ltd Edition: 5th edition ISBN: 9788187972099 2. The 8085 Microprocessor: Architecture, Programming and Interfacing Author: K.Udaya Kumar, B.S.Umashankar Publisher: Pearson Education India Edition: 1st edition ISBN: 9788177584554 3. Microprocessors and Interfacing Author: Douglas V. Hall Publisher: Mcgraw Hill Education Edition: 3rd edition ISBN: 9781259006159 DATASHEETS PROVIDED BY PROF. GADRE https://drive.google.com/folderview?id=0ByFqcybodzN8LS1PRTliN1lSdUU&usp=sharin g WEB LINKS 1. https://en.wikipedia.org/wiki/Intel_8085 2. www.nptel.ac.in/courses/106108100/pdf/Teacher_Slides/mod1/M1L2.pdf 3.http:// electronicsproject.org/microprocessor-based-home-security-system/ 4.http://8085projects.info/