Microprocessor File

Microprocessor File

• 1.
  FACULTY OF ENGINEERING PRACTICALFILE MICROPROCESSOR SUBMITTED BY:- SUBMITTED BY:- Er. PARVINDER BANGAR Name- SOURABH (HOD ECE) Roll no. - 7910476 -L Branch – ELECTRONICS & COMM . ENGG. NECS’s GROUP OF INSTITUTIONS (Affiliated to Kurukshetra University) CHIRAO, KARNAL HARYANA INDEX
• 2.
  Sr. No. Particular Date Remarks 1Write a program to HEX decimal additions of two numbers. 6/09/2011 2 Write a program to HEX decimal additions of two numbers and the result should not be greater than 199. 13/09/2011 3 Write a program to add two sixteen bit numbers. 13/09/2011 4 Write a program an ALP to rotate shaft of a 4- phase stepper motor in clockwise 5 rotations & in anticlockwise 5 rotations. 20/09/2011 5 Write a program to sort a string of a number of bytes in descending order. 20/09/2011 6 Write a program To multiply an ASCII string of eight numbers by a single ASCII digit. The result is a string of unpacked BCD digits. 11/10/2011 7 Write a program to data string of no. of bytes is located from the starting address 0300.This data string is to be converted to its equivalent 2’s complement from and the result is to be stored from 0400 on wards. 18/10/2011 8 Write a program Binary to gray code conversion for number 00 to 0f using translate instruction. 8/11/2011
• 3.
  9 Write aprogram to convert BCD number to its equivalent binary number. 15/11/2011 10 Write a program to find square root of a two digit number assuming number a perfect square. 15/11/2011
• 4.
  PROGRAM - 1 #Hex decimal addition of two numbers. DISCRIPTION:- THE PROGRAM TAKES THECONNECT OF 2040, ADDS IT TO 2041 AND STORES THE RESULT BACK OF 2042.EXCUTE THE PROGRAM FROM 2043 LOCATION. STEPS . 1) Initialize H<Reg. pair with address where the first number is lying. 2) Store the number in an accumulator. 3) Get the second number. 4) Add the two numbers & store the result in 2042. 5) Go back monitor. Execute from 2043 location. ADDRESS CODE LABEL MNEMONIC OPERAND COMMENTS 2043 21 40 20 Start LXI H,2000 Points to first no. 2046 7E MOV A,M Load the accumulator 2047 23 INX H Advance pointer 2048 86 ADD M Add 2nd num. 2049 23 INX H Advance pointer 204A 77 MOV MA Store result 2051 EF RST 5 Output:- EXAMPLE:- 2040 20 2041 23 2042 43 DATA in HEX. PROGRAM - 2
• 5.
  # The decimaladdition of two numbers. The result should not be greater than 199. DISCRIPTION :- The program will add two decimal lying at 2040 and 2041. The result will be stored at 2042. STEPS . 1) Load the content of first location in accumulator. 2) Add it with the content of second location. 3) Adjust the decimal. 4) Store the result and go back to monitor. Execute from 2043 location. ADDRESS CODE LABEL MNEMONIC OPERAND COMMENTS 2043 21 40 20 START LXI H,2000 Points to first no. 2046 7E MOV A,M Load the accumulator 2047 23 INX H Advance pointer 2048 86 ADD M Add 2nd num. 2049 27 INX H Advance pointer 204A 23 MOV M Store result 204B 77 ADD H 204C EF MOV MA Output :- 2043 11 2044 20 2045 31 DATA IN HEX. PROGRAM -3 # Add two sixteen bit number .
• 6.
  DISCRIPTION This program willadd two 16 bit numbers lying at 2040, 2041 , 2042 and 2043. The result is stored at 2044 and 2045. Carry is neglected. STEPS 1) Load the first number in HL. 2) Load the second number. 3) Add the two number and store result. 4) Go back to monitor . Execute from 2046 location. ADDRESS CODE LABEL MNEMONIC OPERAND COMMENTS 2046 2A 40 20 START LHLD 2040 Load the HL. Reg. with 1ST number. 2049 EB DCHG Exchange the HL and DE register. 204A 2A 42 20 LHLD 2042 Load the HL reg. with 2ND number. 204D 19 DAD Add HL &DE register. 204E 22 54 20 SHLD 2044 Store the result in 2044. 2051 EF RST 2045 Output :- Example:- 2040 11 2041 12 2042 14 2043 23 2044 30 2045 15
• 7.
  PROGRAM- 4 # Writea program an ALP to rotate shaft of a 4- phase stepper motor in clockwise 5 rotations & in anticlockwise 5 rotations. An ALP for rotating the shaft of the stepper motor . ASSUME CS CODE (MNEMONIC) COMMENTS CODE SEGMENT START MOV AL,80H OUT CWR , AL MOV AL, 88H Bit pattern 10001000 to start MOV CX , 1000 The sequence of excitation AGAIN 1: OUT PORT A, AL From WA. Excite WA, WB. CALL DELAY We and W0 in sequence with delay ay. For 5 clockwise. ROL AL ,01 Rotations the count is 200*5=1000. DEC CX , JNZ AGAIN1 Excite till count =0. MOV AH , 88H Bit pattern to excite WA. MOV CX , 1000 Count for 5 rotations AGAIN 2 OUT PORTA ,AL Excite WA,WB,Wc and W5. CALL DELAY WAIT. ROR AL, 01 Rotate bit pattern right to obtain anticlockwise. DEC CX Motion of shaft. Decrement count. JNZ AGAIN 2 If 5 rotations are completed MOV AH, 4CH Return to DOS else. INT 21H Continue CODE ENDS END START Output :- The stepper motor connection for windings .ALP for rotating the shaft of
• 8.
  the stepper motorin clockwise 5 rotations & in anticlockwise 5 rotations.
• 9.
  PROGRAM – 5 #To sort a string of a number of bytes in descending order. ADDRESS OP CODE MNEMONIC COMMENTS 0200 BE 00 03 MOV SI,0300 Initialize SI Reg. with Mem LOCN 0300. 0203 8B 1C MOV BX,[SI] BX has the no. of bytes LOCNS 0300& 0301. 0205 4B DEC BX Decrement the no. of bytes by one. 0206 8B 0C MOV CS [SI] Also CX has the no. of bytes in LOCNS 0300 AND 0301. 0208 49 DEC CX Decrement the no. of bytes by one. 0209 BE 02 03 MOV SI, 0302 Initialize SI reg. with the starting address of string. 020C 8A 04 MOV AL,[SI] Move the first data byte of string into AL. 020E 46 INC SI Point at the next bytes of the string. 020F 3A 04 COMP AL,[SI] Compare the two bytes of string. 0211 73 06 JAE 0219 If two bytes are equal. 0213 86 04 XCHG AL,[SI] Else 0215 4E DEC SI Second byte is less than first byte and swap the two bytes. 0216 88 04 MOV[SI],AL 0218 46 INC SI Point at the next LOCN of the string. 0219 E2 F1 LOOP 020C Loop if CX is not zero. 021B 4B DEC BX At this junction, first sorting will be over. 021C BE 00 03 MOV SI,0300 Compared with the rest of the nos. must
• 10.
  be compared with eachother logically. 021F 75 E5 JNZ 0206 0221 F4 HLT Halt . Output :- For Example AFTER EXECUTION 0300 : 05 0302 : 28 0301 : 00 0303 : 25 0302 : 20 0304 : 20 0303 : 25 0305 : 15 0304 : 28 0306 : 07 0305 : 15 0306 : 07
• 11.
  PROGRAM – 6 #Write a program To multiply an ASCII string of eight numbers by a single ASCII digit. The result is a string of unpacked BCD digits. ADDRESS OP CODE MNEMONIC COMMENTS 0200 BE 00 03 MOV SI, 0300 Load SI reg. with starting address of string. 0203 BF 08 03 MOV DI, 0308 Load DI reg. with the starting address of result LOCNS. 0206 B2 34 MOV DL,34 Load DL with the multiplier ASCII Digit. 0208 B9 08 00 MOV CX,0008 Load counter reg. with the no. of bytes in the string. 020B C6 05 00 MOV [DI],00 . 020E 80 E2 0F ANDL, OF MS nibble of multiplier is zeroed 0211 8A 04 MOV AL,[SI] First ASCII no. of string in AL. 0213 46 INC SI Point at the next LOCN in string 0214 80 E0 0F AND AL, OF MS nibble at multiplier no gap & is also zero 0217 F6 E2 MUI DL Perform the fn. AX=AL*DL 0219 D4 0A AAM Perform the fn. AH =AL/0A,AL=remainder 021B 02 05 ADD AL,[DI] The contents of AL. 021D 37 AAA Added with 00 which are in 1st Dest . LOCN. The contents of AL are unpacked Decimal no. and are stored in 1st dest. LOCN(=0308). 021E 88 05 MOV [DI], AL 0220 47 INC DI Point at the next dest. LOCN. 0221 88 25 MOV [DI],AH Contents of AH are moved in next best. LOCN (0309). 0223 49 DEC CX Decrement the counter
• 12.
  reg. 0224 75 EBJNZ 0211 If not zero, continue multiply and storing unpacked BCD digits, ELSE. 0226 F4 HLT HALT Output :- For example AFTER EXECUTION 0300 : 31 0308 : 04 0301 : 32 0309 : 08 0302 : 33 030A : 02 0303 : 34 030B : 07 0304 : 35 030C : 01 0305 : 36 030D : 06 0306 : 31 030E : 06 0307 : 32 030F : 08
• 13.
  PROGRAM -7 # Adata string of no. of bytes is located from the starting address 0300.This data string is to be converted to its equivalent 2’s complement from and the result is to be stored from 0400 on wards. ADDRESS OP CODE MNEMONIC COMMENTS 0200 BE 00 03 MOV SI, 0300 Load SI reg.., with the starting address of data string. 0203 BF 00 04 MOV DI, 0400 Load DI with the starting address of result LOCNS. 0206 B9 10 00 MOV CX, 0010 Load CX with the no. of bytes in the string. 0209 AC LODSB Load AL with data byte accessed by SI reg. and increment the address LOCN in SI reg. 020A F6 D8 NEG AL The contents of AL ae 2’s complemented. 020C AA SIOS B Store AL contents in LOCN pointed to by DI ref. & increment the current location in DI reg. 020D E0 FA Loop NZ 0209 If CX=0000,continue 2’s complementing the data in string else; 020F F4 HLT Halt. Output :- For example after execution 0300 : 01 0400 : FF 0301 : 02 0401 : FE 0302 : 03 0402 : FD 0303 : 04 0403 : FC 0304 : 05 0404 : FB 0305 : 06 0405 : FA 0306 : 07 0406 : F9
• 14.
  0308 : 090408 : F7 3039 : 0A 0409 : F6 030A : 0B 040A : F5 030B : 0C 040B: F4 030C : 0D 040C: F3 030D : 0E 040D : F2 030E : 0F 040E : F1 030F : 10 040F : F0
• 15.
  PROGRAM – 8 #Write a program Binary to gray code conversion for number 00 to 0f using translate instruction . The address of the B. number whose equivalent gray code is to be found is in SI register. The start address of the loop up table for the binary to gray code is in BX register. The result will be moved to (SI + 1) location. ADDRESS OP CODE MNEMONIC COMMENTS 0200 BB 00 03 MOV BX, 0300 Load BX with the starting address of look up table. Load SI . with the address of binary no. whose gray code is to be found. 0203 BE 50 05 MOV SI,05 50 0206 AC LODSB Load AL with the data byte accessed by SI reg. and increment its current address by one i.e. SI=0551. 0207 D7 XLAT AL=(BX+AL) i.e. the contents of address accessed by BX+AL is stored in AL. 0208 88 04 MOV[SI],AL The contents of AL are moved into LOCN pointed by SI, i.e.,0551 contains the result. 020A F4 HLT Halt. LOOK UP TABLE:- 0300 : 00 0301 : 01 0302 : 02 0303 : 03 0304 : 04 0305 : 05
• 16.
  0306 : 06 0307: 07 0308 : 0F 0309 : 0E 030A : 0C 030B : 0D 030C : 08 030D : 09 030E : 0B 030F : 0A Output :- For example Let 0550 : 05 let 0550 : 09 Result 0551 : 05 Result 0551 : 0E 1) Enter the program from 0000:0200h 2) Execute from 0000: 0200h and check the square wave at connector J5.
• 17.
  PROGRAM– 9 # Writea program to convert BCD number to its equivalent binary number. CODE SEGMENT MNEMONIC COMMENTS START MOV AX,DATA Initialize data segment MOV DS,AX MOV BX,BCDNUM BX is now having BCD number MOVCX,O Initialization CONTINUE CMP BX,O Comparison to check BCD NUM is zero. J2 ENDPROG If zero end the program MOV AL,BL 8 LSBs of number is transferred to AL. SUM AL,1 Subtract one from AL. DAS Decimal adjust after subtraction. MOV BL,AL Result stored in BL. MOV AL,BH 8 MSS is transferred to AL SBB AL,00H Subtraction with borrow. DAS Decimal adjust after subtraction MOV BH,AL Result back in BH register. INC CX Increment CX by 1 JMP CONTINUE ENDPROG MOV BIN_NUM,CX Result is stored in data segment. MOV AH,4CH Termination of program INT 21H Termination of program CODE EN END START
• 18.
  PROGRAM -10 # Writea program to find square root of a two digit number assuming number a perfect square. CODE SEGMENT MNEMONIC COMMENTS START MOV AX , DATA Initialize DS. MOV DS , AX MOV CL, NUM Number is transferred to CL. MOV BL,1 BL is initialize to 1. MOV AL,0 AL initialize to 0. UP CMP CL,0 Check for zero number. JZ ZRESULT If zero then go to ZRESULT label SUB CL,BL If not zero subs tract BL from CL. INC AL Increment the content of AL, ADD BL, 02 Add two to register BL. JMP UP Go back to label up ZRESULT MOV RESULT,AL Result is saved in data segment. MOV AH,4CH INT 21H CODE ENDS, END START