MICROPROCESSOR-LAB-VI-SEM.pdf
- 1. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU Experiment No:- 1 Object:- Study the hardware, functions, memory structure and operation of 8085 microprocessor kit. Apparatus:- 8085 Microprocessor Kit THEORY- SYSTEM INTRODUCTIONS GENERAL DESCRIPTION 8085 Micro Processor is a single board Microprocessor training/ Development Kit configured around the most widely used Microprocessor of todays world. Based on 8085 Microprocessor, it can be used to train engineers to control any industrial process and to develop software for 8080 and 8085 based systems. The 8085 communicates with the outside world through a key board having 28 keys and seven segement hexadecimal display. The kit also has the capability of interacting with CRT Terminal and IBM PC compatible computer system through the serial interface provided on the board. The 8085 model has an extra on board facility of audio cassette interface. 8085 provides 8K/32K bytes of RAM and 8K bytes of EPROM. The total on board memory can be very easily expanded to 64K bytes in an appropriate combination of RAM and ROM. The monitor is incorporated from 0000 - 1FFF and the necessary 8K bytes of RAM has an address of 2000 - 3FFF. The Input / Output structure of 8085 provides 24 programmable I/O lines using 8255. It has got 16 bit programmable Timer/Counter for generating any type of counting etc. The on board residents system monitor software is very powerful and provides various software utilities. The kit provides various powerful software commands like, INSERT,
- 2. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU DELETE, BLOCK MOVE, RELOCATE, STRING FILL & MEMORY COMPARE etc. which are very helpful in debugging/developing the software. 8085 is configured around the internationally adopted STD Bus, which is the most popular bus for process control and real time applications. All the address, data and control lines are available at the edge connector. The kit is fully expandable for any kind of application. SYSTEM SPECIFICATION CPU - 8 bit Microprocessor, the 8085 MEMORY - Total on board capacity of 64K bytes RAM - 8K/32K bytes and space for further expansion ROM - 8K bytes of EPROM loaded with powerful program TIMER - 16 bit programmable timer / counter using 8253 I/O - 24 I/O lines using 8255 KEYBOARD - 10 keys for command 16 keys for hexadecimal data entry 1 key for vector interrupt & 1 key for reset LED DISPLAY - 6 seven segment deisplay 4 for address field & 2 for data field BUS - All data, address and control signals (TTL compatible available at FRC connector) INTERFACE - RS - 232 - C through SID/SOD lines with auto baud rate (optional) POWER SUPPLY - +5v, 1.5Amp for the kit REQUIREMENT - +12V + 5%, 250mA for CRT/PC interface OPERATING - 0 to 50o C TEMPERATURE
- 3. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU SYSTEM CAPABILITIES (KEYBOARD MODE) SYSTEM CAPABILITIES (SERIAL MODE) Most of the commands mentioned above can also be used in the serial mode. HARDWARE DISCRIPTION GENERAL The system has got 8085 as the Central Processing Unit. The clock frequency for the system is 3.07 MHz and is generated from a crystal of 6.14 MHz. 8085 has got 8 data lines and 16 address lines. The lower 8 address lines and 8 bit data lines are multiplexed. Since the lower 8 address bits appear on the bus during the first clock cycle of a machine cycle and the 8 bit data appears on the bus during the 2nd and 3rd clock cycle, it becomes necessary to latch the lower 8 address bits during the first clock cycle so that the 16 bit address remains available in subsequent cycles. This is achieved using a latch 74 -LS 373 MEMORY 8085 provides 8/32K bytes of RAM using 6264/62256 chip and 8K bytes of EPROM for monitor. There is one memory space provided on 8085. This one space can be defined any address slots from 8000 - DFFF depending upon the size of the memory chip to be used. Total on board memory can be extended to 64k bytes. I/O DEVICES The various I/O chips used in 8085 are 8279, 8255 & 8253. The functional role of all these chips is given below: 8279 (KEYBOARD & DISPLAY CONTROLLER) 8279 is a general purpose programmable keyboard and display I/O interface device designed for use with the 8085 microprocessor. It provides a scanned interface to 28
- 4. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU contact key matrix provided in 8085 and scanned interface for the six seven segment displays. 8279 has got 16 x 8 display RAM which can be loaded or interrogated by the CPU. When a key is pressed, its corresponding code is entered in the FIFO Queue of 8279 and can now be read by the microprocessor. 8279 also refreshes the display RAM automatically. 8255 (PROGRAMMABLE PERIPHERAL INTERFACE) 8255 is a Programmable Peripheral Interface (PPI) designed to use with 8085 Microprocessor. This basically acts as a general purpose I/O device to interface peripheral equipments to the system bus. It is not necessary to have an external logic to interface with peripheral devices since the functional configuration of 8255 is programmed by the system software. It has got three Input/Output ports of 8 lines each (PORT - A, PORT - B & PORT - C). Port C can be divided into two ports of 4 lines each named as Port C upper and Port C lower. Any Input/Output combination of Port A, Port B and Port C upper and lower can be defined using the appropriate software commands. The port addresses for these port are given in Chapter - 6. 8085 provides 24 Input/Output ports using 8255 chips. INSTALLATION OF 8085 KIT 1. Connect +5V and GND to the 8085 Kit. 2. Switch on the power supply. 3. ‘UP 85’ message will come on the display. Note: Supply connection should be proper according to the connector details C3. 2001 DATA ;2nd no. to be added 2002 RESULT ;Result Step-1 2003 21 00 20 START LXI H,2000 ;Point to 1st no.
- 5. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU Step-2 2006 7E MOV A,M ;Load the accumulator Step-3 2007 23 INX H ;Advance pointer Step-4 2008 86 ADD M ;Add IInd number 2009 23 INX H ;Advance pointer 200A 77 MOV MA ;Store result Step-5 200B EF RST 5 Example Address Data 2000 1A 2001 18 2002 32 Data in Hex Number
- 6. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU Experiment No:- 2 Object:- Write a program to perform integer division Apparatus:- Vinytics VMC8509 Microprocessor Kit Program: Memory Address Mnemonics Label Hex Code 2000 LXI H,2500 21 2001 0 2002 25 2003 MOV A,M 7E 2004 INX H 23 2005 MVI C,00 0E 2006 0 2007 CMP M L1 BE 2008 JC 2010 L2 DA ;2009 10 200A 20 200B SUB M 96 200C INR C 0C 200D JMP 2007 C3 200E 7 200F 20 2010 INX H 23 2011 MOV M,A 77 2012 INX H 23 2013 MOV M,C 71 2014 HLT 76
- 7. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU Result:- Before Execution:- 2500-09 2501-02 2503- Reminder 2504-Questioned AFTER EXECUTION:- 2502:- 01 2503:-04
- 8. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU Experiment No:- 3 Object:- Write a program to transfer a block of data placed in one memory location to another memory location in forward order. Apparatus:- Vinytics VMC8509 Microprocessor Kit Program: Memory Address Mnemonics Label Hex Code 2000 LXI H 2500 21 2001 00 2002 25 2003 LXI D 3500 11 2004 00 2005 35 2006 MVI C,05 0E 2007 05 2008 MOV A,M L1 7E 2009 STAX D 12 200A INX H 23 200B INX D 13 200C DCR C 0D 200D JNZ 2008 C2 200E 08 200F 20 2010 HLT 76
- 9. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU Result:- Before Execution After Execution LOCATION DATA LOCATION DATA 2500 11 3500 11 2501 12 3501 12 2502 13 3502 13 2503 14 3503 14 2504 15 3504 15
- 10. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU Experiment No:-4 Object:- Write a program to searching a no. in array & find the occurance of that data. Apparatus:- Vinytics VMC8509 Microprocessor Kit Program: Memory Address Mnemonics Label Hex Code 2000 MVI D,00 16 2001 00 2002 LXI H 2500 21 2003 00 2004 25 2005 MOV C,M 4E 2006 INX H 23 2007 MOV A,M 7E 2008 INX H L1 23 2009 CMP M BE 200A JNZ 200E C2 200B 0E 200C 20 200D INR D 14 200E DCR C L2 0D 200F JNZ 2008 C2 2010 08 2011 20 2012 HLT 76
- 11. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU Result:- Before Execution LOCATION DATA 2500 05 2501 02 2502 01 2503 02 2504 08 2505 02 2506 02 OUTPUT :- D=03
- 12. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU Experiment No:-5 Object:-write a Program to sort an arrary in ascending Order. Apparatus:- Vinytics VMC 8509 Microprocessor Kit Program:- Memory Adderess Mnemonics Label Hex Code 2000 LXI H,2500 21 2001 - 00 2002 - 25 2003 Mov C,M 4E 2004 MOV D,C 51 2005 INX H @ 23 2006 MOV A,M 7E 2007 INX H # 23 2008 MOV B,M 46 2009 CMP B B8 200A JNC ($) D2 200B 13 200C 20 200D DCX H 2B 200E MOV M,A 77 200F MOV A,B 78 2010 JMP* C3 2011 15 2012 20
- 13. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU Result:- 2013 DCX H ($) 2B Memory Adderess Mnemonics Label Hex Code 2014 MOV M,B 70 2015 INX H * 23 2016 DCR D 15 2017 JNZ# C2 2018 07 2019 20 201A MoV M,A 77 201B DCR C 0D 201C JNZ@ C2 201D 05 201E 20 201F HLT 76 Before Execution After Execution Location Data Location Data 2500 05 2500 02 2501 09 2501 03 2502 03 2502 04 2503 04 2503 05 2504 07 2504 07 2505 02 2505 09
- 14. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU Experiment No:-6 Object:- An Assembly Language Program to arrange an array of data in descending order using 8085. Apparatus: - 8085 Microprocessor Kit Program:- Algorithm 1) Initialize HL pair as memory pointer. 2) Get the count at 4200 in to C register. 3) Copy it in D register. 4) Get the first vale in Accumulator. 5) Compare it with the value at next location. 6) If they are out of order, exchange the contents of accumulator and memory. 7) Decrement D register’s content by 1. 8) Repeat steps 5 and 7 till the value in D register become zero. 9) Decrement C register’s content by 1. 10) Repeat steps 3 to 9 till the value in C register becomes zero. 11) Terminate the program. Program MEMORY LABEL MNEMONIC HEX CODE COMMENT 4400 LXI H,4200 21 Load the array size to the HL pair 4401 00 4402 42 4403 MOV C,M 4E Copy the array size to C register 4404 DCR C 0D Decrement C by 1 4405 REPEAT MOV D,C 51 Copy content of C to D register 4406 LXI H,4201 21 Load the first data to the HL pair 4407 01 4408 42
- 15. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU 4409 LOOP MOV A,M 7E Copy the data to the accumulator 440A INX H 23 Increment memory by 1 440B CMP M BE Compare accumulator and memory content 440C JNC SKIP DA Jump on no carry to the label SKIP 440D 14 440E 44 440F MOV B,M 46 Copy memory content to B register 4410 MOV M,A 77 Copy accumulator content to memory 4411 DCX H 2B Decrement memory by 1 4412 MOV M,B 70 Copy B register’s content to memory 4413 INX H 23 Increment memory by 1 4414 SKIP DCR D 15 Decrement D by 1 4415 JNZ LOOP C2 Jump on non-zero to the label LOOP 4416 09 4417 44 4418 DCR C 0D Decrement C by 1 4419 JNZ REPEAT C2 Jump on non-zero to the label REPEAT 441A 05 441B 44 441C HLT 76 Program ends Observation Input at 4200 : 05H ---------- Array Size 4201 : 01H 4202 : 02H 4203 : 03H 4204 : 04H 4205 : 05H Output at 4200 : 05H ---------- Array Size 4201 : 05H 4202 : 04H 4203 : 03H 4204 : 02H 4205 : 01H
- 16. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU EXPERIMENT NO.:-7 Object:- Write a program to perform BCD to Hexadecimal conversion. Apparatus:- VINYTICS VMC 8509 Microprocessor Kit Program:- Memory Adderess Mnemonics Label Hex Code F000 LXI H,F500 21 F001 00 F002 F5 F003 MOV A,M 7E F004 ANI ,OF E6 F005 0F F006 MOV B,A 47 F007 MOV A,M 7F F008 ANI F0 E6 F009 F0 F00A RRC 0F F00B RRC 0F F00C RRC 0F F00D RRC 0F F00E MOV D,A 57 F00F MVI C,09 0E F010 09 F011 ADD D # 82 F012 DCR C 0D F013 JNZ # C2
- 17. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU F014 11 F015 F0 F016 ADD B 80 F017 INX H 23 F018 MOV M,A 77 F019 HLT 76 RESULT:- INPUT:- OUTPUT:- F500:-25 F501:-19H
- 18. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU Experiment No:-8 Object:- Wirte a program to generate the Fibonicci No. Apparatus:- Vinytics VMC8509 Microprocessor Kit Program: Memory Address Mnemonics Label Hex Code 2000 LXI H,2500 21 2001 0 2002 25 2003 MOV C,M 4E 2004 INX H 23 2005 MOV A,M 0E 2006 INX H 23 2007 ADD M L1 BE 2008 INX H L2 DA ;2009 MOV M,A 10 200A DCX H 20 200B MOv A, M 96 200C DCR C 0C 200D JNZ C2 200E 06 200F 20 2010 HLT 76
- 19. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU EXPERIMENT No.:9 OBJECT:- Write a program to generate 15 Fibbonacci Number and sum of 15 Fibbonacci APPARATUS :- Vinytics VMC 8509 Microprocessor Kit PROGRAM:- Memory Adderess Mnemonics Label Hex Code 2000 LXI H,2500 21 2001 00 2002 25 2003 MOV C,M 4E 2004 INX H 23 2005 MOV A,M 7E 2006 INX H 23 2007 MVI B,01 06 2008 01 2009 ADD M @ 86 200A MOV D,A 57 200B ADD B 80 200C MOV B,A 47 200D INX H 23 200E MOV M,D 72 200F DCX H 2B 2010 MOV A,M 7E 2011 INX H 23 2012 DCR C 0D
- 20. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU 2013 JNZ @ C2 2014 09 2015 20 2016 MOV A,B 78 2017 STA 2600 32 2018 00 2019 26 201A HLT 76 RESULT:- INPUT:- OUTPUT:- 2500:- COUNT 2501 -00 2501 – 00 2502 - 01 2501 – 01 2503 -01 2504 – 02 2505 – 03 2506 – 05 2507 – 08 2508 – 0D
- 21. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU EXPERIMENT No.10 OBJECT:- Write a program for rolling disply of message “ INDIA” APPARATUS :- Vinytics VMC 8509 Microprocessor Kit PROGRAM:- Memory Adderess Mnemonics Label Hex Code F000 LXI H, F500 # 21 F001 00 F002 F5 F003 PUSH H @ E5 F004 XRA A AF F005 MOV B,A 47 F006 CALL (O/P) CD F007 B7 F008 02 F009 MVI A,01 3E F00A 01 F00B MVI B.00 06 F00C 00 F00D CALL (O/P) CD F00E B7 F00F 02 F010 LXI D, FFFF H 11 F011 FF F012 FF F013 CALL (Delay) CD
- 22. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU F014 70 F015 F5 F016 MOV A,M 7E F017 CPI FF FE F018 FF F019 POP H E1 F01A INX H 23 F01B JNZ @ C2 F01C 03 F01D F0 F01E JMP # C3 F01F 00 F020 F0 Delay Subroutine:- Memory Adderess Mnemonics Label Hex Code F570 DCX D @ 1B F571 MOV A,D 7A F572 ORA E B3 F573 JNZ @ C2 F574 70 F575 F5 F576 RET C9
- 23. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU EXPERIMENT No.11 OBJECT:- Programme to multiply two 8-bit numbers Address Mnemonics Operand Opcode Remarks 2000 LXI H, 3000H 21 Load H-L pair with address 3000H. 2001 00 Lower-order of 3000H. 2002 30 Higher-order of 3000H. 2003 MOV B, M 46 Move the 1st operand from memory to reg. B. 2004 INX H 23 Increment H-L pair. 2005 MOV C, M 4E Move the 2nd operand from memory to reg. C. 2006 MVI A, 00H 3E Initialize accumulator with 00H. 2007 00 Immediate value 00H. 2008 ADD B 80 Add B with A. 2009 DCR C 0D Decrement reg. C (counter). 200A JNZ 2008H C2 Jump back to address 2008H if C ≠ 0. 200B 08 Lower-order of 2008H. 200C 20 Higher-order of 2008H. 200D INX H 23 Increment H-L pair. 200E MOV M, A 77 Move the result from accumulator to memory. 200F HLT 76 Halt.
- 24. BHAGWANT UNIVERSITY AJMER Lab Name :- Microprocessor Lab code:-06BEC-202 BU Output: Before Execution: 3000H: 02H 3001H: 05H After Execution: 3002H: 0AH