yogesh 8085n
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MicroprocessorLab File (8085)
Faculty Guide Submitted by:
Mr. Lala Bhasker Yogesh Chand Singhal
M.Tech -Weekend (2010-2013)
ECE - IVth Semester
A2326110023
AMITY SCHOOL OF ENGINEERING & TECHNOLOGY, NOIDAAMITY UNIVERSITY, UTTAR PRADESH
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Experiment No: 1
Aim:Write a program to Add two 16 bit numbers.
Apparatus used: 8085 microprocessor kit and keyboard.
Program:
Address Opcode Label Opcode Comments
2000H2001H2002H2003H2004H2005H2006H2007H2008H2009H200AH200BH200CH200DH200EH
200FH2010H
2AH00H40HEBH2AH02H40H7BH85H6FH7AH8CH67H22H04H
40H76H
LHLD 4000H
XCHGLHLD 4002H
MOV A, EADD LMOV L, AMOV A, D
ADC HMOV H, ASHLD 4004H
HLT
Get first 16 bit number in HL
Save first 16 bit number in DEGet second 16 bit number in HL
Get lower byte of the first numberAdd lower byte of the second numberStore result in L RegisterGet higher byte of first number
Add higher byte of second number with carryStore result in H registerStore result in memory location 4000H & 4005H
Terminate program execution
Data given:
4000H : 15 H First number lower byte4001H : 1CH First number higher byte4002H : B7 H Second number lower byte4003H : 5A H Second number higher byte4004H :CC H Result lower byte4005H 76 H Result higher byte
Result: 1C15H + 5AB7H = 76CCH
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Flow Chart
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Experiment No: 2
Aim: To Subtract two 16 bit numbers
Address Opcode Label Opcode Comments
2000H2001H2002H
2003H2004H2005H2006H2007H2008H2009H200AH200BH200CH200DH
200EH200FH2010H
4000H4001H4002H4003H4004H4005H
2AH00H40H
EBH2AH02H40H7BH95H6FH7AH9CH67H22H
04H40H76H
19H6AH15H5CH04H0EH
LHLD 4000H
XCHGLHLD 4002H
MOV A, ESUB LMOV L, AMOV A, DSBB HMOV H, ASHLD 4004H
HLT
Get first 16 bit number in HL
Save first 16 bit number in DEGet second 16 bit number in HL
Get lower byte of the first numberSubtract lower byte of the second numberStore result in L RegisterGet higher byte of first numberSubtract higher byte of second num with borrowStore result in H registerStore result in memory location 4000H & 4005H
Terminate program execution
First number lower byteFirst number higher byteSecond number lower byteSecond number higher byteResult lower byteResult higher byte
Result: 6A19H - 5C15H = OE04H
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Flow Chart
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Experiment No: 3
Aim: To Multiply two 8 bit numbers
Address Opcode Label Opcode Comments
2000H2001H2002H
2003H2004H2005H2006H2007H2008H2009H200AH200BH200CH200DH
200EH200FH2010H2011H2012H2013H2014H2015H
4000H4001H4002H4003H
3AH00H40H
5FH16H00H3AH01H40H4FH21H00H00H19H
0DHC2H0DH20H22H02H40H76H
03HB2H16H02H
BACK
LDA 4000H
MOV E, AMVI D, 00H
LDA 4001H
MOV C, ALXI H, 0000H
DAD D
DCR CJNZ BACK
SHLD 4002H
HLT
First numberSecond numberResult lower byteResult higher byte
Result: 03H * B2H = 0216H
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Flow Chart
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Experiment No: 4
Aim: To Divide 16 bits number by 8 bit number
Address Opcode Label Opcode Comments
2000H2001H2002H
2003H2004H2005H2006H2007H2008H2009H200AH200BH200CH200DH
200EH200FH2010H2011H2012H2013H2014H2015H
4000H4001H4002H4003H
Result:
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Experiment No: 5
Aim: To find the 1s complement of a 8 bit number
Address Opcode Label Opcode Comments
2000H2001H
2002H2003H2004H2005H2006H2007H
4000H4001H
3AH00H
40H2FH32H01H40H76H
55HAAH
LDA 4000H
CMASTA 4001H
HLT
Get the number
Complement NumberStore the result
Terminate program execution
Number to be complemented1s Complemented number result
Result: 55H AAH
Flow Chart
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Experiment No: 6
Aim: To find the 2s complement of a number
Address Opcode Label Opcode Comments
2000H2001H2002H2003H2004H2005H2006H2007H2008H2009H
4000H4001H
3AH00H40H2FHC6H01H32H01H40H76H
55HAAH
LDA 4000H
CMAADI, 01H
STA 4001H
HLT
Get the number
Complement Number
Store the result
Terminate program execution
Number to be complemented2s Complemented number result
Result: 55H AAH
Flow Chart
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Experiment No: 7
Aim: To find the largest number in an array of numbers
Address Opcode Label Opcode Comments
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2000H2001H2002H2003H2004H
2005H2006H2007H2008H2009H200AH200BH200CH200DH200EH200FH
2010H2011H2012H2013H2014H2015H
4000H4001H4002H4003H4004H4005H
3A00404F
AF
210140BED20D207E230DC2
022032054076
04H34H
A9H78H56H
A9H
BACK
SKIP
LDA 4000H
MOV C, AXRA A
LXI H, 4401H
CMP MJNC SKIP
MOV A, MINX HDCR CJNZ BACK
STA 4005H
HLT
Initialize counterMaximum = Minimum possible value = 0
Initialize pointer
Is Number > maximumYes, replace maximum
Store maximum number
Terminate program execution
Array lengthFirst numberSecond NumberThird numberFourth NumberResult: Largest Number
Result: Largest number A9H
Flow Chart
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Experiment No: 8
Aim: To find the smallest number in an array of numbers
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Address Opcode Label Opcode Comments
2000H2001H
2002H2003H2004H2005H2006H2007H2008H2009H200AH200BH200CH200DH200EH200FH2010H2011H2012H2013H2014H2015H
4000H4001H4002H4003H4004H4005H
Result:
Experiment No: 9
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Aim: To sort the given numbers in Ascending Order
Address Opcode Label Opcode Comments
2000H2001H2002H2003H2004H2005H2006H2007H2008H2009H200AH
200BH200CH200DH200EH200FH2010H2011H2012H2013H2014H2015H
4000H4001H4002H4003H4004H4005H
Result:
Experiment No: 10
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Aim: To sort the given numbers in Descending Order
Address Opcode Label Opcode Comments
2000H2001H2002H2003H2004H2005H2006H2007H2008H2009H200AH
200BH200CH200DH200EH200FH2010H2011H2012H2013H2014H2015H
4000H4001H4002H4003H4004H4005H
Result:
Experiment No: 11
Aim: To find square root of a 8 bit binary number
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Address Opcode Label Opcode Comments
2000H2001H
2002H2003H2004H2005H2006H2007H2008H2009H200AH200BH200CH200DH200EH200FH2010H2011H2012H2013H2014H2015H
4000H4001H4002H4003H4004H4005H
Result:
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