Write an 8051 ALP for serial port programming to transfer block of data using

a. Polling method

ORG 0000H

MSG: DB "WELCOME" ,0

MOV TMOD, #20H

MOV SCON, #50H

MOV TH1, #-3

SETB TR1

MOV DPTR, #MSG

L1:

CLR A

MOVC A,@A + DPTR

JZ L3

MOV SBUF,A

L2:

JNB TI,L2

INC DPTR

CLR TI

SJMP L1

L3:

END

b. ISP method

ORG 0000H

LJMP MAIN

ORG 0023H

CLR TI ;Transmitter Is Not Ready For Transmission.

INC DPTR ;Send Next Character.

CLR A

MOVC A,@A+DPTR ;Moves The String To Accumulator.

JZ L1

MOV SBUF,A

L1:

RETI

ORG 0030H

MSG: DB "WELCOME",0

MAIN:

MOV SCON, #50H ;Enable Mode 1 & Xmission Of SerialConrol Xmitter.

MOV TMOD, #20H ;Set Mode 2.

MOV TH1, #-3 ;Baud Rate Is 9600.

MOV IE,#90H

MOV DPTR, #MSG

SETB TR1 ;Timer 1 Run Control Bit.

CLR A ;Clear Accumulator.

MOVC A,@A + DPTR

JZ L2 ;String Is Over.

MOV SBUF,A ;Bit Is Set When Transmitter Is Ready ForTransmitter.

L3:

SJMP L3

L2:

END