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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