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CODES OPERATIONS org 0000h //add mov a,#25h mov b,#12h add a,b mov 10h,a //sub mov a,#25h subb a,b mov 11h,a //mul mov a , #25h mul ab mov 12h,a mov 13h,b //div mov a,#25h mov b,#12h div ab mov 14h,a mov 15h,b //logical operators //AND mov a,#25h mov b,#12h anl a,b mov 10h,a //OR mov a,#25h mov b,#12h orl a,b mov 17h,a //XOR mov a,#25h mov b,#12h xrl a,b mov 18h,a //complement cpl a, mov 19h,a //clear clr a mov 20h, a halt:sjmp halt end To add following data and then use the simulator to examine the EY flag org 0000h mov a,#92h mov r0,#23h add a,r0 jnc l1 inc r7 l1:mov r1,#66h add a,r1 jnc l2 inc r7 l2:mov r2,#87h add a,r2 jnc l3 inc r7 l3:mov r3,#073h add a,r3 jnc l4 jnc r7 l4: here:sjmp here end TO LOAD VALUE INTO R0 R4 THEN PUSH INTO STACK THEN CLEAR AND POP THEM BACK org 0000h mov r0,#25h mov r1,#35h mov r2,#45h mov r3,#55h mov r4,#65h push 0 push 1 push 2 push 3 push 4 mov r0,#00h mov r1,#00h mov r2,#00h mov r3,#00h mov r4,#00h pop 0 pop 1 pop 2 pop 3 pop 4 end CALCULATE CUBE OF A NUMBER org 0000h mov a,20h mov b,a mul ab mov r0,b mov b,20h mul ab mov 23h,a mov r1,b mov a,r0 mov b,20h mul ab mov 21h,b mov b,r1 add a,b mov 22h,a mov a,21h addc a,#0h mov 21h,a stop:sjmp stop end FACTORIAL org 0000h mov r1,#05h mov r7,#01h lcall fact mov r7,a fact: mov a,r7 cjnc r1,#00,up sjmp up1 up: mov b,r1 mul ab djnz r1,up up1: ret end LARGEST NUMBER IN THE SERIES ORG 0000H MOV R0,#50H MOV A,@R0 MOV R2,A DEC R2 INC R0 MOV B,@R0 INC RO BACK:MOV A,@R0 CJNE A,B,LOOP JMP LOOP1 LOOP: JC LOOP1 MOV B,A LOOP1: INC R0 DJNZ R2,BACK NEXT: MOV 60H,B END SMALLEST NUMBER ORG 0000H MOV R0,#50H MOV A,@R0 MOV R2,A DEC R2 INC R0 MOV B,@R0 INC RO BACK:MOV A,@R0 CJNE A,B,LOOP JMP LOOP1 LOOP: JNC LOOP1 MOV B,A LOOP1: INC R0 DJNZ R2,BACK NEXT: MOV 60H,B END VIT UNIVERSITY ORG 0000H MOV DPTR,#MYDATA MOV R0,#40H MOV R2,#13H BAC:CLR A MOVC A,@A+DPTR MOV @R0,A INC DPTR INC R0 DJNZ R2,BACK HERE:SJMP HERE ORG 200H MY DATA:DB "VIT UNIVERSITY" END TRANSFERRING STRING ADDRESS STARTING FROM 200H TO RAM LOCATIONS STARTING AT 40H AND THEN MOVE TO 60H ORG 0000H MOV DPTR,#MYDATA MOV R0,#40H MOV R2,#11H MOV R1,#60H MOV R3,#11H BAC:CLR A MOVC A,@A+DPTR MOV @R0,A INC DPTR INC R0 DJNZ R2,BACK MOV R0,#40H AGAIN:MOV A,@R0 MOV @R1,A INC R0 INC R1 DJNZ R3,AGAIN HERE:SJMP HERE ORG 200H MY DATA:DB "VIT UNIVERSITY" END CONVERSION OF DATA- TO GET A BYTE OF HEX DATA FROM P1, CONVERT IT TO DECIMAL AND THEN TO ASCII. PLACE THE ASCII IN RAM LOCATIONS STARTING AT 40H ORG 0000H MOV P1,#0FBH MOV R0, #40H MOV A, P1 LOOP: MOV B, #10 DIV AB XCH A,B ADD A, #30H MOV @R0, A XCH A,B INC R0 JNZ LOOP END TRANSFER CONTENT OF P1 TO P2 USING ACCUMULATOR mov a, #0ffh ;a=ff hex mov p1,a ; make p1 and i/p port back: mov a, p1 mov p2, a sjmp back end GENERATE WAVE FORM HAVING XTAL=11.0592Hz ORG 000H MOV TMOD,#10H AGAIN:MOV TL1,#1AH MOV TH1,#0FFH SETB TR1 BACK: JNB TF1,BACK CLR TR1 CPL P1.5 CLR TF1 SJMP AGAIN END TOGGLE ALL BITS OF P1 USING 200 ms WITH CRYSTAL FREQUENCY OF 11.0592Hz MOV A,#55H AGAIN: MOV P0,A MOV P1,A MOV P2,A MOV P3,A ACALL DELAY CPL A SJMP AGAIN DELAY:MOV R5,#2 HERE1:MOV R4,#180 HERE2:MOV R3,#255 HERE3:DJNZ R3,HERE3 DJNZ R4, HERE2 DJNZ R5, HERE1 RET TO GET 40% AND 70% DUTY CYCLE USING INTERRUPTS ORG 0000H BACK: SETB P0.1 SETB P1.1 LCALL DELAY LCALL DELAY LCALL DELAY LCALL DELAY CPL P0.1 LCALL DELAY LCALL DELAY LCALL DELAY CPL P1.1 LCALL DELAY LCALL DELAY LCALL DELAY SJMP BACK DELAY: MOV R0,#01H MOV R1,#01H A1:MOV R1,A2 DJNZ R0,A1 RET END CREATE A PROGRAM FOR 50 ms on & 50 ms off ORG 0000H LJMP MAIN ORG 000BH DJNZ R0,TEN MOV R0,#36 JB P1.1,ONN DJNZ R2,TEN MOV R2,#0 SET B P1.1 CPL P0.1 SJMP TEN ONN: DJNZ R1,TEN MOV R1,#5 CLR P1.1 CLR P0.1 TEN:RET I ORG 0030H MAIN: MOV R0,#36 MOV R1,#5 MOV R2,#0 MOV TMOD,#2H MOV TH0,#-255 MOV IE,#82H SETB P1.1 SET B TR0 BACK:SJMP BACK END Microprocessor Codes: 1)CUBE OF A NUMBER ORG 0000H MOV A,20H MOV B,A MUL AB MOV 21H,A MOV 22H,B MOV A,20H MOV B,21H MUL AB MOV 23H,A MOV 24H,B MOV A,20H MOV B,22H MUL AB MOV 25H,A MOV 26H,B MOV 30H,23H MOV A,24H MOV A,25H MOV 31H,26H ADDC A,#0H MOV 32H,A 2)PUSH OR POP ORG 0000H MOV R0,#25H MOV R1,#35H MOV R2,#45H MOV R3,#55H MOV R4,#65H PUSH 0 PUSH 1 PUSH 2 PUSH 3 PUSH 4 MOV R0,#00H MOV R1,#00H MOV R2,#00H MOV R3,#00H MOV R4,#00H POP 4 POP 3 POP 2 POP 1 POP 0 END 3)FACTORIAL OF A NUMBER ORG 0000H MOV R1,#05H MOV R7,#01H LCALL FACT MOV R7,A FACT: MOV A,R7 CJNE R1,#00,UP SJMP UP1 UP: MOV B,R1 MUL AB DJNZ R1,UP UP1: RET END 4)FIND THE LARGEST ELEMENT IN A ARRAY ORG 0000H MOV R0,#50H MOV A,@R0 MOV R2,A DEC R2 INC R0 MOV B,@R0 INC R0 BACK:MOV A,@R0 CJNE A,B,LOOP JMP LOOP1 LOOP:JC LOOP 1 MOV B,A LOOP1:INC R0 DJNZ R2,BACK NEXT:MOV 60H,B END 5)Copy string from ram 200h to ram 40h ORG 0000H MOV DPTR,#MYDATA MOV R0,#40H MOV R2,#13H BACK: CLR A MOVC A,@A+DPTR MOV @R0,A INC DPTR INC R0 DJNZ R2,BACK HERE :SJMP HERE ORG 200H MYDATA: DB “VITUNIVERSITY” END 6)COPYING TO LOCATION 60H ORG 0000H MOV DPTR,#MYDATA MOV R0,#40H MOV R2,#11H MOV R1,#60H MOV R3,#11H BACK:CLR A MOVC A+@A+DPTR MOV @R0,A INC DPTR INC R0 DJNZ R2,BACK MOV R0,#40H AGAIN: MOV A,@RO MOV @R1,A INC R0 INC R1 DJNZ R3,AGAIN HERE: SJMP HERE ORG 200H MYDATA:DB “ANYA SOROHI” END 7)EXCHANGE VALUES ORG 0000H MOV P1,#0FBH MOV R0,#40H MOV A,P1 LOOP:MOVB,#10 DIV AB XCH A,B ADD A,#30H MOV @R0,A XCH A,B INC R0 JNZ LOOP END 8)MOV VALUE 55H TO P1,P2,P3 SIMULTANEOUSLY ORG 0000H MOV A,#55H AGAIN:MOV P0,A MOV P1,A MOV P2,A MOV P3,A ACALL DELAY CPL A SJMP AGAIN DELAY:MOV R5,#2 HERE1:MOV R4,#180 HERE2:MOV R3,#255 HERE3:DJNZ R3,HERE3 DJNZ R4,HERE2 DJNZ R5,HERE1 RET 9)250 MICROSECS DELAY USING TIMERS ORG 0000H MOV TMOD,#10H AGAIN: TL1,#1AH MOV TH1, #0FFH SETB TR1 BACK:JNB TF1,BACK CLR TR1 CPL P1.5 CLR TF1 SJMP AGAIN END 10)MOVING VALUES FROM P1 TO P2 ORG 0000H MOV A,#0FFH MOV P1,A BACK: MOV A,P1 MOV P2,A SJMP BACK END 11)SERIAL COMMUNICATION- A ORG 000H SJMP MAIN MAIN:MOV TMOD,#20H MOV TH1,#-6 MOV SCON,#50H SETB TR1 AGAIN: MOV SBUF,#”A” HERE:JNB TI, HERE CLR TI SJMP AGAIN END 12)VIT UNIVERSITY ORG 0000H SJMP MAIN MAIN: MOV DPTR,#3000H MOV TMOD,#20H MOV RO,#0EH MOV TH1,#0FDH MOV SCON,#50H SETB TR1 UP:CLR A MOVC A,@A+DPTR AGAIN:MOV SBUF,A HERE:JNB T1, HERE CLR TI INC DPTR DJNZ R0,UP SJMP $ ORG 3000H DB ‘VIT UNIVERSITY’ END 13) ORG 0000H MOV TMOD,#20H MOV SCON, #50H SETB TR1 HERE: JNB RI,HERE MOV A,SBUF MOV P1,A CLR RI SJMP HERE END 14) PROGRAM THAT CONTINUOUSLY SENDS 8 BIT DATA FROM P0 TO P1 WHILE CREATING A SQUARE WAVE OF 200US PERIOD ON PIN P2.1. USE TIMER 0 ORG 0000H LJMP MAIN ORG 000BH CPL P2.1 RETI ORG 0030H MAIN:MOV TMOD,#02H MOV P0,#0FFH MOV TH0,#-92 MOV IE,#82H SETB TRO BACK:MOV A, P0 MOV P1,A SJMP BACK END 15)GENERATE TWO WAVES FOR DUTY CYCLE 40% AND 70% USING INTERRUPT ORG 0X000 MOV TMOD,#01H MOV TH0,#0FDH MOV TH0,#0F0H MOV TH1,#0C9H MOV TL1,#0C7H MOV TCON,#52H MOV P1,#00H MOV P2,#00H SETB ET0 SETB ET1 SETB EA MAIN: LOOP: SJMP MAIN-LOOP TIME Q0-ISR CLR TF0 MOV TH0,#0FDH MOV TL0,#0FDH CPL P1.0 RETI TIME Q1-ISR CLR TF1 MOV TH1,#0C7H MOV TL1,#0C7H RETE CPL P2.0 END 16)WAVEFORM THAT GENERATES (ON-50MS, OFF-80MS) ORG 0000H LJMP MAIN ORG 000BH DJNZ R0,TEN MOV R0,#36H JB P1.1,0HN DJNZ R2,TEN MOV R2,#8 SETB P1.1 CPL P0.1 SJMP TEN CONN:DJNZ R1,TEN MOV R1,#5 CPL P1.1 CPL P0.1 TEN RETI ORG 0030H MAIN: MOV R0,#36 MOV R1,#5 MOV R2,#8 MOV TMOD,#24 MOV THO,#-255 MOV IE,#82H SETB P1.1 SETB TR0 BACK:SJMP BACK END Microprocessor Codes: 1)CUBE OF A NUMBER ORG 0000H MOV A,20H MOV B,A MUL AB MOV 21H,A MOV 22H,B MOV A,20H MOV B,21H MUL AB MOV 23H,A MOV 24H,B MOV A,20H MOV B,22H MUL AB MOV 25H,A MOV 26H,B MOV 30H,23H MOV A,24H MOV A,25H MOV 31H,26H ADDC A,#0H MOV 32H,A 2)PUSH OR POP ORG 0000H MOV R0,#25H MOV R1,#35H MOV R2,#45H MOV R3,#55H MOV R4,#65H PUSH 0 PUSH 1 PUSH 2 PUSH 3 PUSH 4 MOV R0,#00H MOV R1,#00H MOV R2,#00H MOV R3,#00H MOV R4,#00H POP 4 POP 3 POP 2 POP 1 POP 0 END 3)FACTORIAL OF A NUMBER ORG 0000H MOV R1,#05H MOV R7,#01H LCALL FACT MOV R7,A FACT: MOV A,R7 CJNE R1,#00,UP SJMP UP1 UP: MOV B,R1 MUL AB DJNZ R1,UP UP1: RET END 4)FIND THE LARGEST ELEMENT IN A ARRAY ORG 0000H MOV R0,#50H MOV A,@R0 MOV R2,A DEC R2 INC R0 MOV B,@R0 INC R0 BACK:MOV A,@R0 CJNE A,B,LOOP JMP LOOP1 LOOP:JC LOOP 1 MOV B,A LOOP1:INC R0 DJNZ R2,BACK NEXT:MOV 60H,B END 5)Copy string from ram 200h to ram 40h ORG 0000H MOV DPTR,#MYDATA MOV R0,#40H MOV R2,#13H BACK: CLR A MOVC A,@A+DPTR MOV @R0,A INC DPTR INC R0 DJNZ R2,BACK HERE :SJMP HERE ORG 200H MYDATA: DB “VITUNIVERSITY” END 6)COPYING TO LOCATION 60H ORG 0000H MOV DPTR,#MYDATA MOV R0,#40H MOV R2,#11H MOV R1,#60H MOV R3,#11H BACK:CLR A MOVC A+@A+DPTR MOV @R0,A INC DPTR INC R0 DJNZ R2,BACK MOV R0,#40H AGAIN: MOV A,@RO MOV @R1,A INC R0 INC R1 DJNZ R3,AGAIN HERE: SJMP HERE ORG 200H MYDATA:DB “ANYA SOROHI” END 7)EXCHANGE VALUES ORG 0000H MOV P1,#0FBH MOV R0,#40H MOV A,P1 LOOP:MOVB,#10 DIV AB XCH A,B ADD A,#30H MOV @R0,A XCH A,B INC R0 JNZ LOOP END 8)MOV VALUE 55H TO P1,P2,P3 SIMULTANEOUSLY ORG 0000H MOV A,#55H AGAIN:MOV P0,A MOV P1,A MOV P2,A MOV P3,A ACALL DELAY CPL A SJMP AGAIN DELAY:MOV R5,#2 HERE1:MOV R4,#180 HERE2:MOV R3,#255 HERE3:DJNZ R3,HERE3 DJNZ R4,HERE2 DJNZ R5,HERE1 RET 9)250 MICROSECS DELAY USING TIMERS ORG 0000H MOV TMOD,#10H AGAIN: TL1,#1AH MOV TH1, #0FFH SETB TR1 BACK:JNB TF1,BACK CLR TR1 CPL P1.5 CLR TF1 SJMP AGAIN END 10)MOVING VALUES FROM P1 TO P2 ORG 0000H MOV A,#0FFH MOV P1,A BACK: MOV A,P1 MOV P2,A SJMP BACK END 11)SERIAL COMMUNICATION- A ORG 000H SJMP MAIN MAIN:MOV TMOD,#20H MOV TH1,#-6 MOV SCON,#50H SETB TR1 AGAIN: MOV SBUF,#”A” HERE:JNB TI, HERE CLR TI SJMP AGAIN END 12)VIT UNIVERSITY ORG 0000H SJMP MAIN MAIN: MOV DPTR,#3000H MOV TMOD,#20H MOV RO,#0EH MOV TH1,#0FDH MOV SCON,#50H SETB TR1 UP:CLR A MOVC A,@A+DPTR AGAIN:MOV SBUF,A HERE:JNB T1, HERE CLR TI INC DPTR DJNZ R0,UP SJMP $ ORG 3000H DB ‘VIT UNIVERSITY’ END 13) ORG 0000H MOV TMOD,#20H MOV SCON, #50H SETB TR1 HERE: JNB RI,HERE MOV A,SBUF MOV P1,A CLR RI SJMP HERE END 14) PROGRAM THAT CONTINUOUSLY SENDS 8 BIT DATA FROM P0 TO P1 WHILE CREATING A SQUARE WAVE OF 200US PERIOD ON PIN P2.1. USE TIMER 0 ORG 0000H LJMP MAIN ORG 000BH CPL P2.1 RETI ORG 0030H MAIN:MOV TMOD,#02H MOV P0,#0FFH MOV TH0,#-92 MOV IE,#82H SETB TRO BACK:MOV A, P0 MOV P1,A SJMP BACK END 15)GENERATE TWO WAVES FOR DUTY CYCLE 40% AND 70% USING INTERRUPT ORG 0X000 MOV TMOD,#01H MOV TH0,#0FDH MOV TH0,#0F0H MOV TH1,#0C9H MOV TL1,#0C7H MOV TCON,#52H MOV P1,#00H MOV P2,#00H SETB ET0 SETB ET1 SETB EA MAIN: LOOP: SJMP MAIN-LOOP TIME Q0-ISR CLR TF0 MOV TH0,#0FDH MOV TL0,#0FDH CPL P1.0 RETI TIME Q1-ISR CLR TF1 MOV TH1,#0C7H MOV TL1,#0C7H RETE CPL P2.0 END 16)WAVEFORM THAT GENERATES (ON-50MS, OFF-80MS) ORG 0000H LJMP MAIN ORG 000BH DJNZ R0,TEN MOV R0,#36H JB P1.1,0HN DJNZ R2,TEN MOV R2,#8 SETB P1.1 CPL P0.1 SJMP TEN CONN:DJNZ R1,TEN MOV R1,#5 CPL P1.1 CPL P0.1 TEN RETI ORG 0030H MAIN: MOV R0,#36 MOV R1,#5 MOV R2,#8 MOV TMOD,#24 MOV THO,#-255 MOV IE,#82H SETB P1.1 SETB TR0 BACK:SJMP BACK END |