Hello,Mr.jan
Merry X`mas

we have tried this one (http://www.8052.com/forum/read/126206 )
but not writing data #10101010B At addres 0080H.this one will store random data.

we write some data on flash memory at location
above 2000H address. Also we are calling PGM_MTP
low level routine for to write and read the user
code data at address 0080H.

here,i am writing small program in assembly
language for to access IAP.
pl send me corrected program code.

;********************************************
DPL EQU 82H
DPH EQU 83H
FCF EQU 0B1H
IE EQU 0A8H
PGM_MTP EQU 1FF0H

ORG 0080H
MOV R3,#55H
MOV R4,#25H

ORG 2000H
GOOD:
ACALL WRITE
ACALL READ

MOV FCF,#001H
MOV DPTR,#0080H
CLR A
MOVC A,@A+DPTR
MOV 080H,A
MOV A,#10101010B
MOV 0A0H,A
ACALL DELAY
ACALL DELAY
SJMP GOOD


WRITE:

PUSH IEH
CLR AFH
ANL FCF,#0FCH
MOV R1,#02H
MOV DPTR,#0080H
MOV A,#11110000B
LCALL 1FF0H
ORL FCF,#001H
POP IEH
ACALL DELAY
RET

READ:
PUSH IEH
CLR AFH
ANL FCF,#0FCH
MOV R1,#03H
MOV DPTR,#0080H
LCALL 1FF0H
ORL FCF,#001H
POP IEH
ACALL DELAY
RET

DELAY:
MOV R5,#10
LD2: MOV R6,#100
LD1: MOV R7,#100
LD: DJNZ R7,LD
DJNZ R6,LD1
DJNZ R5,LD2
RET
END
;********************************************

We wre waiting for your replay.