Contents. Join the Technical Community Today!

Transcription

1

2 Contents CHAPTER 1: INTRODUCTION WELCOME PS 8051 BOARD OVERVIEW PS 8051 SPECIFICATIONS... 7 CHAPTER 2: SYSTEM DESCRIPTION HARDWARE MAPPING OF DEVICES CONNECTOR DETAILS POWER SUPPLY DETAILS KEYBOARD DETAILS CHAPTER 3 COMMANDS AND KEYS RESET H (Help Menu) CHAPTER 4 OPERATING INSTRUCTIONS POWER ON PROGRAM ENTRY USING ASSEMBLER: ENTERING MNEMONICS DISASSEMBLER... 24

3 4.5 M (MODIFY EXTERNAL MEMORY): G (GO COMMAND) B (BAUD RATE) R (REGISTER DISPLAY/MODIFY) I (Modify internal memory) T (TRANSFER COMMAND) N (LOCAL MODE) E (EXAMINE / DUMP MEMORY) PROGRAMMING THE 8051 TRAINER KIT: PROCEDURE 1: TO ENTER THE MNEMONICS PROCEDURE 2: TO ENTER THE OPCODE CHAPTER 5 PROGRAMMING DETAILS REGISTERS: MONITOR PROGRAM: BREAKPOINT: CHAPTER 6: EXAMPLE PROGRAMS BIT ADDITION BIT SUBTRACTION BIT BCD ADDITION FIBONACCI SERIES... 52

4 6.5 HEX TO ASCII CONVERSION PORT BITS SELECTION CHARACTER TRANSMISSION ) ADDITIONAL PROGRAMS ON 8051 TRAINER KIT BIT ADDITION: BIT SUBTRACTION: SETTING BITS IN AN 8-BIT NUMBER: MASKING BITS IN AN 8-BIT NUMBER:... 63

5 CHAPTER 1: INTRODUCTION 1. WELCOME Thank you for purchasing PS-8051 Board from Pantech Solutions Pvt Ltd. The PS-8051 board which demonstrates the capabilities of the 40-pin 8051 (various families) Sample programs are provided to demonstrate the unique features of the supported devices. The PS-8051 Board Kit comes with the following: 1) PS-8051 Board 2) Sample device (NXP 89V51RD2) 3) Cross cable (RS232) 4) CD-ROM, which contains: Sample programs User and Technical Reference Manual 5) User and Technical Reference Manual 6) Keyboard (101 keys)

6 Note: If you are missing any part of the kit, please contact our support executive 1.2 PS 8051 BOARD OVERVIEW The PS 8051 board in based on Intel 8051 Microcontroller which operates at MHZ. the board can operate using the 101/104 PC keyboard supplied along with the trainer kit and 2 line by 16 characters LCD display or from the PC (using the Terminal Emulation Software). PS 8051 is equipped with

7 powerful software monitor in 27C256 EPROM. Keyboard and LCD display. The board has 32KB CMOS static RAM (type 62256). PS 8051 works on +9V DC at 1 Amp. 1.3 PS 8051 SPECIFICATIONS The PS 8051 board has the following hardware features: Microcontroller operating at MHZ KB powerful software monitor in 27C256 EPROM KB on chip Flash memory (partially used by Firmware). 4. Two 16 bit programmable on chip Timer Programmable I/O pins (24 from 8255 and 6 (P1.0 to P1.5) from Port 1 of 8051) pin FRC connector for system bus expansion.

8 7. 20 pin FRC connector for user interface from pin D type connector for RS 232C interface. 9. Six different selectable baud rates from 150 to One timer and external interrupt PC type keyboard for entering user address/data and for commands. 12. Built in line by line Assemble and Disassemble. 13. User friendly software monitor for loading and executing programs with break point facility. 14. Facility to connect to PC. 15. PS-8051 board supports Assembly and C language

9 CHAPTER 2: SYSTEM DESCRIPTION 2.1 HARDWARE PS 8051 Microcontroller board designed around 8051 is ideal for learning about Microcontroller. The Microcontroller operates at 10 MHZ using a MHZ crystal. Lower bytes of address and data are multiplexed as in 8085 and hence a decoder is necessary to separates address and data. IC 74LS373 is used for this purpose. Firmware is stored in 27C256 EPROM. User data/program can be stored in 32KB COMS static RAM of type The board uses an 8255 totally available to the user. 2X16 character LCD display is directly connected to the bus like a memory device. Serial communication is

10 achieved using This is possible when the Microcontroller is operating in alternate mode. In this mode, port pins 3.0 and 3.1 act as receive and transmit pins respectively. Timer 1 is used for generating the baud clock. IC Max 232 convert TTL transmit and receive signals to RS 232 levels. These signals are brought to a 9 pin D type connector (female) has built in 16 bit counter/timer called timer 0 and 1. Timer 1 is used internally by the system for generating the baud clock. Timer 0 is free and hence can be used by the user has following interrupt: Timer 0 and 1 interrupts.

11 External interrupts 0 and 1. Serial interrupt. Out of the 5 interrupts listed above external interrupt 0 and timer 0 are available to the user. 2.2 MAPPING OF DEVICES CONNECTOR DETAILS 1) 50 PIN EXPANSION CONNECTOR :

12 The 50 Pin FRC connector is used to interconnect with the Interface cards like 8255, 8279, 8253/8251,8259, 8257 and the pin details are given below

13 2) 20 PIN EXPANSION CONNECTORS : The 20 Pin FRC connector is used to interconnect with the Interface cards like ADC, DAC, SWITCH/LED,RELAY buzzer Interfaces etc. Pin details are given below

14 3) KEYBOARD CONNECTOR :

15 4) 9PIN D TYPE (FEMALE) : 5) LCD CONNECTOR

16 2.3 POWER SUPPLY DETAILS PS trainer kit will work at 0 9v (1 amp) from the PS power supply. Provision is made in PS power supply to bring out on the front panel DC regulated voltage output for interfacing with add-on cards. +9V 1 amp 2.4 KEYBOARD DETAILS 101 PC type keyboard is interfaced to Microcontroller through its port pin. Communication between keyboard and Microcontroller takes place using 2 wires one for serial clock and serial data (P1.6 and P1.7).

17 CHAPTER 3 COMMANDS AND KEYS 3.1 RESET This key is located in the main PS board. On depressing this key the program starts executing from the beginning i.e. at reset address On power on reset message PS 8051 is displayed in local LCD display. 3.2 H (Help Menu) This key is used in PS 51/31 to get into help menu and it will display the following commands.

18 CHAPTER 4 OPERATING INSTRUCTIONS 4.1 POWER ON Connect the PS 8051 board to the power having the following specifications. +9V DC 1 Amp

19 Switch on the power supply after ensuring the correct voltages. Following message will appear on the LCD display. On power on or after reset the display shows PANTECH 8051 as a sign on message. The prompt character is displayed in the next line informing the user, that the board is ready to accept the commands. 4.2 PROGRAM ENTRY USING ASSEMBLER: PS 8051 is ready to accept the assembler entry command after power on or after reset. Commands can be entered in the second line of display and to enter into assembler from where the user program gets stored.

20 In PS 8051, the user may enter the program from 8000H FFFFH (if 32KB RAM is installed). EXAMPLE: A8500 Press ENTER Key On typing this line PS-8051B is ready to store the user program from start address Following message shows in local LCD. 4.3 ENTERING MNEMONICS As mentioned before, each instruction of Microcontroller can be entered by specific set of characters generally 2/3/4 letters followed by respective operands. List of instruction and mnemonics are given in the Appendix A.

21 EXAMPLE: MOV A, R0 (ENTER key = ) Sequence for entering the above instruction is as follows. Typing sequence, M O V Space bar A, R 0 Enter key EXAMPLE: INC A Press ENTER Key

22 Typing sequence, I N C Space bar A Enter key (ENTER Key ) As per the above procedure mnemonics are entered. On completion of one line address, display in the first line automatically gets incremented by respective value depending on the instruction. Line by line assembler converts the entered mnemonics to equivalent opcode and stores it in the displayed address. If any wrong mnemonics or operands are entered ERROR message is displayed.

23 On completion of one line of entry, the user may repeat the above sequence of operation till the program is over or till the end of memory. Termination of Assembler entry is by depressing enter key. IMPORTANT INSTRUCTIONS 1. When immediate addressing mode is used before entering the data, # symbol should be entered for instruction like, MOV A, #12 MOV DPTR, # When register indirect addressing mode is symbol to entered for instruction like, MOV MOV

24 EDITING During the entry of mnemonics if any wrong entry is made it is possible to edit it before depressing Enter key. Use the Backspace key in the keyboard to erase the previous character and this process may be repeated till the first character. Once a character is erased, retype the correct character. 4.4 DISASSEMBLER Disassemble converts the hex byte stored in the memory into equivalent mnemonics. To enter into disassemble mode, type D in the command mode followed by the memory address. EXAMPLE:

25 Assume the following data is stored in the memory address To disassemble the above data is, D8500 [Enter] On completion of this command, the display is as follows, AA MOV A, #AA To see the next line depress space bar key. Display is, NOP In similar manner, the above sequence may be repeated and depressing the enter key can terminate this command.

26 4.5 M (MODIFY EXTERNAL MEMORY): Using this command the user can display/modify any external memory address. ENTERING ADDRESS After depressing this key, the system is ready to accept from the keyboard and the board displays the data of the selected memory address. Depressing any other non-hex key results in error and the current command and once again wait s for new command. ENTERING DATA Now, if required, entering the new data can modify data at the desired address. Entry of data is also similar to that of address. Terminator for data is cursor up key or cursor down key or space or enter key. Thus it is possible to load the opcode/data in memory and verify it using M (MDFY), UP and DOWN keys.

27 EXAMPLE: Thus it is possible to load the program/data in memory and verify it using M (MDFY), UP and DOWN key.

28 4.6 G (GO COMMAND) This command is used to execute user program from the specified address. EXAMPLE: EXAMPLE: G8850

29 The above command starts the program execution from address If enter key is depressed immediately after G, the program starts executing from the value specified in PC of R command. Thus all register values displayed in R command are initial values for user program address. 4.7 B (BAUD RATE) When this key is depressed it displays the currently selected baud rate. Default baud rate is 2400 baud and this will be selected during power on or hardware reset and displayed in the first line. Second line display shows 150 baud. By depressing the space bar key the baud display can be changed from 150 to 300 and so on till The system permits following baud rates. { and 150} By depressing the enter key, the currently displayed baud rate is selected fir future serial communication (however,this will be modified if reset key is depressed).

30 NOTE: Space bar key doesn t select the baud rate and it s used to display the succeeding baud value only. 4.8 R (REGISTER DISPLAY/MODIFY) When this key is depressed it displays current register contents one after another. After depressing this key the board waits for the register number and enter key from the user. If for example, key R2 depressed and then enter key the system will display R2 contents. As in the case of Modify, it is possible change the displayed register contents. The entry is similar to that of data filed entry. The termination for register data entry is by space bar key.

31 Entering space bar key increments register number and its data is displayed once again. Thus it is possible to display and modify all the sixteen registers. Termination of this command is by enter key. EXAMPLE: If after depressing R, A is typed followed by enter this command displays A value and waits for the user to enter new value.

32 If succeeding registers are to be modified use space key to advance. Enter terminates the command. In the following example, A register value to be changed to 33 and R0 to 66. EXAMPLE:

33 4.9 I (Modify internal memory) This command is similar to that of modify external except it displays/modifies internal 128 bytes of 8051 Microcontroller. Use of UP, DOWN and ENTER keys are also as described above. The example program is given in chapter 6 Note: This command is one of the important command used to Modify the internal memory of controller T (TRANSFER COMMAND) This command is useful for transferring data from one area to another. The user has to specify the source start address, source end address and Destination start address.

34 User can key in source start address and its delimiter with space bar key. Source end address is also keyed in similar way with space bar key as delimiter. Next enter the Destination start address and is moved from one area to another. EXAMPLE: T FF 9800 Press ENTER Key. The above command transfer the memory content starting from source start address 9000 to destination start address 9800 till source end address 90FF is reached. Starting address 9000 End address 90FF End address 9800

35 4.11 N (LOCAL MODE) When this key is depressed on PC keyboard, the PS 8051 Kit starts working through local 101 keyboard. Serial communication is disabled. Following message will appear in the LCD display.! NORMAL MODE! 4.12 E (EXAMINE / DUMP MEMORY) This command will show the hex byte on the console from the memory. This command requires start address and end address. Its operates only the serial mode. EXAMPLE: E FF from 8500 to 85FF. This will show hex bytes in the location

36 4.13 PROGRAMMING THE 8051 TRAINER KIT: PROCEDURE 1: TO ENTER THE MNEMONICS 1) Initially connect the 9V adaptor to J2 connector 2) Switch ON the PS-8051kit using slide Switch SW1 3) PANTECH will be displayed on the LCD 4) Connect the Keyboard in PS/2 connector 5) Depress A starting address of the program for Ex: A8500 For ex: A8500 enter key Type the mnemonics MOV A,#12 press Enter key Type the mnemonics ADD A,#12 press Enter key and continue the same procedure till the end of the Program

37 6) To verify the code depress D starting address and depress space bar to see next memory location For Ex: D8500 and press spacebar till the end of the program 7) To execute the program Depress G staring address for Ex: G ) To see the result depress M result address for Ex: M ) To view the output in the Register depress R and press enter key in keyboard. PROCEDURE 2: TO ENTER THE OPCODE Follow the same procedure till step 4

38 1) Depress M starting address of the program for Ex: M8500 For ex: M8500 press enter Type the opcode 74 space bar Type the opcode 12 space bar and continue the same till the end of the program 2) To view the code depress D starting address and depress space bar to see next memory location For Ex: D8500 and press spacebar till the end of the program 3) To execute the program Depress G staring address for Ex: G8500.

39 4) To see the result depress M result address for Ex: M ) To view the output in the Register depress R and press enter key in keyboard Note: 1) M is used for displaying the result, for Ex: M8500 2) M is used to entering the Opcode. 3) M is used for entering the data. Note: There are two ways to enter the program 1) Mnemonics method 2) Opcode method Sample program is given to enter the program in both the methods

40 CHAPTER 5 PROGRAMMING DETAILS This chapter describes the technique for developing program in PS 8051 board. For the development of program it is essential to get familiar with the machine code of 8051 Microcontroller or mnemonics of instruction set. 5.1 REGISTERS: From the programmer s point of view 8051 has the following register: A or Accumulator used for all logical and arithmetical operations. B register (8 bit) used in multiply/divides instructions only. R0, R1, R2, R3, R4, R5, R6, and R7 register are general-purpose registers.

41 Program counter is 16 bit register capable of addressing from 0000-FFFF Stack pointer is an 8-bit register. It is initialized a value of 70, please note the value of SP is incremented by 1 or 2 (whereas SP decrements 1 or 2 in 8085 or Z80) depending on the type of instructions. Also stack uses only internal 128 bytes of memory. Status/Flag register keeps track of flags. 5.2 MONITOR PROGRAM: Monitor the program uses following areas: Program EPROM : FFF External user RAM program variables). Internal RAM : (for monitor : 256 bytes RAM 128 bytes used by 8051 itself. Area from 40 to 6F is available for user.

42 User Interrupts : Timer 0 interrupt vectors to address 800b. External interrupt 0 vector to address (The user has to enable desired interrupts in his program). Chip select signals for user: CS6 CS7 CS8 CS9 CS F F F 40A0 40BF 40C0 40DF 5.3 BREAKPOINT: When writing program it is essential to debug them and for this break points are necessary. Normally these are achieved by using software Break points. However 8051 does not have any such facility. Other conventional

43 methods require extra hardware and hence these are avoided in PS 8051 board. Wherever break points are required they can be called like subroutines. As soon as break point are called all the register values are saved and displayed on the console or in local display. BREAK POINT SUBROUTINE ADDRESS 00BB It is possible to continue the program execution just by depressing G and enter in local mode. BREAK POINT DISPLAY IN LOCAL MODE:

44 When break point is encountered, all the register values are saved and the Acc. Value is displayed in the LCD display. Now use SPACE key to check register values one by one. BREAK POINT DISPLAY IN SERIAL MODE: When break point is encountered, all the register values are saved and all the register value will be displayed on the console. CHAPTER 6: EXAMPLE PROGRAMS BIT ADDITION FLOW CHART:

45 This program adds two 32 bit numbers. First number is from 40h to 43h. Second number is from 50h to 53h. Result is from 60h to 63h. NOTE: To enter the data in the internal memory, press i and address then data. Reset the kit and then enter, i0040 Key. Press ENTER

46 Then enter the data and press space bar from keyboard for entering the next data EX: i0040 FIRST DATA : address : 40 TO 43 MSB IN EX: i0050 SECOND DATA : 50 address : 50 TO 53 MSB IN 50 EX: i0060 RESULT DATA : 60 address : 60 TO 63 MSB IN 60 PROGRAM: ADDRES S OPCODE MNEMONICS COMMENTS 8500 C3 CLR C Clear Carry flag 8501 E5 43 MOV A, 43 Move the 1st LSB data from ADDR 43 to ACC ADDC A, 53 Add ACC with 2nd LSB data in ADDR F5 63 MOV 63,A Store the LSB data from ACC to ADDR E5 42 MOV A, 42 Move the 1st Mid Lowest data from ADDR 42 to ACC ADDC A, 52 Add ACC with 2nd Mid Lowest data in ADDR B F5 62 MOV 62, A Store the Mid Lowest data from ACC to ADDR D E5 41 MOV A, 41 Move the 1st Mid Highest data from ADDR 41 to ACC 850F ADDC A, 51 Add ACC with 2nd Mid Highest data in ADDR F5 61 MOV 61, A Store the Mid Highest data from ACC to

47 ADDR E5 40 MOV A, 40 Move the 1st MSB data from ADDR 40 to ACC ADDC A, 50 Add ACC with 2nd MSB data in ADDR F5 60 MOV 60, A Store the MSB data from ACC to ADDR BB LCALL 00BB Break point BIT SUBTRACTION FLOW CHART:

48 This program subtracts two 32 bit numbers. First number is from 40h to 43h. Second number is from 50h to 53h. Result is from 60h to 63h. NOTE: To enter the data in the internal memory, press i and address then data. Reset the kit and then enter, i0040 Press ENTER Key. Then enter the data and press space bar from keyboard for entering the next data EX: i0040 FIRST DATA : 40 address : 40 TO 43 MSB IN 40 EX: i0050 SECOND DATA : 50 address : 50 TO 53 MSB IN 50 EX: i0060 RESULT DATA : 60 address : 60 TO 63 MSB IN 60 PROGRAM:

49 BIT BCD ADDITION FLOW CHART:

50 This program adds 32 bit BCD numbers. First BCD number is from 40h to 43h. Second BCD number is from 50h to 53h. Result is from 60h to 63h.

51 NOTE: To enter the data in the internal memory, press i and address then data. For Example: Reset the kit and then enter, i0040 Press ENTER Key. PROGRAM:

52 6.4 FIBONACCI SERIES FLOW CHART FIBONACCI SERIES (0, 1, 1, 2, 3, 5, 8, 13..) This program will generate the Fibonacci series This will take input from the internal memory, 60h.

53 Input = number of elements to be generate in the series. Output =elements of the series is stored in the memory. Starting from 8F00h. NOTE: To enter the data in the internal memory, press i and address then data. For Example: Reset the kit and then enter, i0060 Press ENTER Key. No = 40 Beg = 8F00 Input count location Output buffer start address

54 PROGRAM: ADDR OPCOD MNEMONICS COMMENTS ESS E 8500 A8 60 MOV R0, 60 Move the no. of Fibonacci data into R MOV R1, #01 Initialize 1 to R A 01 MOV R2, #01 Initialize 1 to R MOV A, #00 Initialize 0 to ACC F 00 MOV DPTR,#8F00 Load output data to DPTR 850B B CJNE R0, #00, 8511 If R0 is not equal to 0 then jump into E C LJMP 851C Long Jump into 851C 8511 F0 A Store ACC value into DPTR 8512 A3 INC DPTR Increment the DPTR 8513 FA MOV R2, A Load the ACC value into R ADD A, R1 Add ACC with R MOV R1,R2 Copy value from R2(addr2) to R1 (addr1) 8518 F0 A Store the new value from ACC to DPTR 8519 A3 INC DPTR Increment DPTR 851A D8 F7 DJNZ R0, 8513 If the count isn t equal to Zero, jump back 851C BB LCALL 00BB Break point address 6.5 HEX TO ASCII CONVERSION

55 This program takes one HEX number (0 to F) then it will convert that in to ASCII byte.user has entered any one of the HEX number ( 0 to F).

56 INPUT : Enter the HEX value in external memory location OUTPUT : Result is stored in Accumulator and also in R1 register. PROGRAM: 6.6 PORT BITS SELECTION FLOW CHART:

57 In this port -1bit (p1.0) is set and cleared after specific interval Using bit wise operators User can view the output on the first pin of 8051(i.e., bit 0 of port1) in oscilloscope. PROGRAM:

58 6.7 CHARACTER TRANSMISSION Baud calculation Baud rate = (1/32) * (OSCILATOR FREQ/ (12*256))

59 0089 = tmod: equ 89h 008d = th1: equ 8dh 008b = tl1: equ 8bh 088e = tr1: equ 8eh 0098 = scon: equ 98h 0099 = sbuf equ 99h PROGRAM:

60 OUTPUT: connect the Cross cable between PC and KIT execute the program and verify the result in HyperTerminal 6.8) ADDITIONAL PROGRAMS ON 8051 TRAINER KIT EX1 programming using Arithmetic, Logical and Bit Manipulation instruction of BIT ADDITION: INPUT: 8501 = = 12 RESULT: 8600 = 24.

61 2. 8-BIT SUBTRACTION: INPUT: 8501 = = 10 RESULT: 8600 = BIT MULTIPLICATION:

62 INPUT: 8501 = 0A 8504 = 88 RESULT: 8600 = 50 (LSB) 8601 = 05 (MSB) 4. SETTING BITS IN AN 8-BIT NUMBER: INPUT: 8501 = 2F 8503 = 45 RESULT: 8600 = 6F.

63 5. MASKING BITS IN AN 8-BIT NUMBER: INPUT: 8501 = = 7E RESULT: 8600 = 06. 1) 16-BIT ADDITION of two numbers: OBJECTIVE: To perform 16-bit addition of two 16-bit data using indirect addressing and store the result in Memory.

64 THEORY: As there is only one 16-bit Register in 89C51, 16-bit addition is performed by using ADDC Instruction twice, i.e. adding LSB first and MSB next. GIVE INPUT TO THIS LOCATION: F5; MSB of first 16 bit data D5; LSB of first 16 bit data ; MSB of second 16 bit data ; LSB of second 16 bit data RESULT: MSB of result LSB of result PROGRAM

65 PROCEDURE 1. Enter the input data in memory location 8500 to Enter the above opcodes from Execute the program. 4. Result stored in 8600 & Change data and check result in 8600, 8601.

66 2) 16-BIT SUBTRACTION Of Two Numbers: OBJECTIVE: To perform 16-bit Subtraction of two 16-bit data using indirect addressing and store the result in memory. THEORY: As there is only one 16-bit Register in 89C51, 16-bit subtraction is performed by using subb Instruction. GIVE INPUT TO THIS LOCATION: MSB of first operand MSB of second operand LSB of first operand LSB of second operand

67 RESULT: 8700 MSB 8701 LSB PROCEDURE 1. Enter the input data in memory location 8600 to 8603.

68 2. Enter the above opcodes from Execute the program. 4. Result stored in 8700 & Change data and check result in 8700, ) 8-BIT MULTIPLICATION of two numbers: OBJECTIVE: To perform 8-bit Multiplication of two 8-bit data using indirect addressing and store the result In memory. THEORY: Using indirect addressing Multiply two 8-bit data. GIVE INPUT TO THIS LOCATION: Multiplicand

69 Multiplier RESULT: 8700 PROCEDURE 1. Enter the input data in memory location 8600 to Enter the above opcodes from Execute the program.

70 4. Result stored in 8700 & Change data and check result in 8700, ) 8-BIT DIVISION of two numbers: OBJECTIVE: To perform 8-bit Division of two 8-bit data using indirect addressing and store the result in memory. THEORY: Using indirect addressing divide two 8-bit data s. GIVE INPUT TO THIS LOCATION: Dividend Divisor. RESULT: 8700 & 8701

71 PROGRAM PROCEDURE 1. Enter the input data in memory location 8600 to Enter the above opcodes from Execute the program. 4. Result stored in 8700 & Change data and check result in 8700, ) FACTORIAL OF A GIVEN NUMBER: OBJECTIVE:

72 To find factorial of a given number. PROGRAM PROCEDURE

73 1. Enter the input data in memory location Enter the above opcodes from Execute the program. 4. Result stored in Change data and check result in ) MULTIPLY BY SHIFT AND ADD METHOD OBJECTIVE: Multiple of two 8-bit numbers using repeat addition method. PROGRAM

74

75 MEMORY DDRESS OPCODES MNEMONICS MOV DPTR,#8600H 8503 E0 MOVX 8504 F8 MOV R0,A MOV DPTR,#8601H 8508 E0 MOVX 8509 F9 MOV R1,A 850A 7A 00 MOV R2,#00H 850C 7B 08 MOV R3,#08H 850E E9 LOOP: MOV A,R1 850F ANL A,#01H 8511 FC MOV R4,A 8512 BC CJNE R4,#01H,LOOP EA MOV A,R ADD A,R FA MOV R2,A 8518 E8 LOOP1: MOV A,R RL A 851A F8 MOV R0,A 851B E9 MOV A,R1 851C 03 RR A 851D F9 MOV R1,A 851E DB EE DJNZ R3,LOOP MOV DPTR,#8700H 8523 EA MOV A,R F FE E: SJMP E PROCEDURE 1. Enter the input data in memory location 8600 & Enter the above opcodes from 8500.

76 3. Execute the program. 4. Result stored in Change data and check result in ) LCM of a given number OBJECTIVE To find LCM of a given number. PROGRAM ORG 8500H MEMORY ADDRESS OPCODES MNEMONICS MOV DPTR,#8600H 8503 E0 MOVX A,@DPTR 8504 F8 MOV R0,A MOV DPTR,#8601H 8508 E0 MOVX A,@DPTR 8509 F9 MOV R1,A 850A 7D 00 MOV R5,#00H 850C 7A 01 MOV R2,#01H 850E C3 TOP1: CLR C 850F EA MOV A,R SUBB A,R B JZ TOPY 8513 EA MOV A,R SUBB A,R JZ TOPY 8517 E8 MOV A,R A F0 MOV B,R2 851A 84 DIV AB 851B E5 F0 MOV A,B

77 851D B4 00 0B CJNE A,#00H,TOPX 8520 E9 MOV A,R A F0 MOV B,R DIV AB 8524 E5 F0 MOV A,B 8526 B CJNE A,#00H,TOPX 8529 EA MOV A,R2 852A FD MOV R5,A 852B 0A TOPX: INC R2 852C 80 E0 SJMP TOP1 852E ED TOPY: MOV A,R5 852F MOV DPTR,#8700H 8532 F FE E: SJMP E PROCEDURE 1. Enter the input data in memory location 8600 & Enter the above opcodes from Execute the program. 4. Result stored in Change data and check result in ) HCF of a given number OBJECTIVE To find HCF of a given number.

78 PROGRAM ORG 8500H PROCEDURE

79 1. Enter the input data in memory location 8600 & Enter the above opcodes from Execute the program. 4. Result stored in 8700 & Change data and check result in 8700 & ) MATRIX ADDITION PROGRAM ORG 8500H MEMORY ADDRESS MNEMONICS OPCODES MOV DPTR,#8600H 8503 E0 MOVX 8504 F5 F0 MOV B,A MOV DPTR,#8650H 8509 E0 MOVX 850A 25 F0 ADD A,B 850C MOV DPTR,#8700H 850F F MOV DPTR,#8601H 8513 E0 MOVX 8514 F5 F0 MOV B,A MOV DPTR,#8651H 8519 E0 MOVX 851A 25 F0 ADD A,B 851C MOV DPTR,#8701H 851F F0

80 8523 E0 MOVX 8524 F5 F0 MOV B,A MOV DPTR,#8652H 8529 E0 MOVX 852A 25 F0 ADD A,B 852C MOV DPTR,#8702H 852F F MOV DPTR,#8603H 8533 E0 MOVX 8534 F5 F0 MOV B,A MOV DPTR,#8653H 8539 E0 MOVX 853A 25 F0 ADD A,B 853C MOV DPTR,#8703H 853F F FE E: SJMP E PROCEDURE 1. Enter the input data in memory location 8600 & Enter the above opcodes from Execute the program. 4. Result stored from 8700 & 8703.Change data and check result in 8700 & ) FIBONACCI SERIES OF A NUMBER OBJECTIVE:

81 To find Fibonacci series of a given number. PROGRAM PROCEDURE 1. Enter the input data in memory location Enter the above opcodes from Execute the program. 4. Result stored from Change data and check result in 8601

82 11) SQUARE OF A GIVEN NUMBER OBJECTIVE: To find Square of a given number. PROGRAM 12) SQUARE ROOT OF A GIVEN NUMBER OBJECTIVE To find Square root of a given number. PROGRAM

83 PROCEDURE 1. Enter the input data in memory location Enter the above opcodes from Execute the program. 4. Result stored from Change data and check result in 8700

84 13) LARGEST ELEMENT IN AN ARRAY: OBJECTIVE: To find the biggest number in an array of 8-bit unsigned numbers of predetermined length. EXAMPLE: The length of the array is specified in the Register R5. The array itself starts at The largest number of the array is stored at location 860A. Data : [8600] = 05 [8601] = 67 [8602] = 76 [8603] = 89 [8604] = 98 [8605] = 49 [8606] = 45 [8607] = 9F [8608] = 57 [8609] = 7A Result :[860A] = 9F

85 PROGRAM

86 Did you enjoy the read? Pantech solutions creates information packed technical documents like this one every month. And our website is a rich and trusted resource used by a vibrant online community of more than 1,00,000 members from organization of all shapes and sizes.

87 What do we sell? Our products range from Various Microcontroller development boards, DSP Boards, FPGA/CPLD boards, Communication Kits, Power electronics, Basic electronics, Robotics, Sensors, Electronic components and much more. Our goal is to make finding the parts and information you need easier and affordable so you can create awesome projects and training from Basic to Cutting edge technology.