Hi,
I live in Suffolk county NY and was wondering if any one is in the area and available to tutor.I'm also having a problem with a program and and am wondering what it is.I've written two versions that should do the same thing,one works but the other doesn't and I'm curious where I went wrong on the first one I wrote.It wont add 30h and put result in new location.

the first one:
;THIS COPIES FIRST 16 BYTES OF CODE MEM
;STARTING WITH LOC 0050. THEN ADD 30H.
;COPY ORIGINAL CODE TO LOC 2000 TO
;200F AND THE MODIFIED TO LOC 2010 TO
;201F.

.ORG 2020H
MOV 50H,#00H
MOV 51H,#20H
MOV 52H,#50H
MOV 53H,#10H
MOV 54H,#00H
MOV R7,#16 ;COUNT=16
NEXT:MOV DPL,52H ;POINT TO CODE 0050
MOV DPH,50H ;
CLR A
MOVC A,@A+DPTR ;GET CODE
MOV DPH,51H ;POINT TO 2000
MOV DPL,54H
MOVX @DPTR,A ;MOVE CODE TO XRAM
INC 54H ;INC DEST PTR
INC 52H ;INC SOURCE PTR
DJNZ R7,NEXT
MOV R7,#16 ;COUNT=16
MORE:MOV DPL,52H ;POINT TO CODE
MOV DPH,50H
CLR A
MOVC A,@A+DPTR ;GET CODE
ADD A,#30H ;ADD 30H
MOV DPL,53H ;POINT TO XRAM 2010
MOV DPH,51H
MOVX @DPTR,A ;SEND TO XRAM
INC 52H ;INC SOURCE PTR
INC 53H ;INC DEST POINTER
DJNZ R7,MORE
LJMP 0000

the second one:(working)
.ORG 2020H
MOV 50H,#00H
MOV 51H,#20H
MOV 52H,#50H
MOV 53H,#10H
MOV 54H,#00H
MOV R7,#16 ;COUNT=16
NEXT:MOV DPL,52H ;POINT TO CODE 0050
MOV DPH,50H ;
CLR A
MOVC A,@A+DPTR ;GET CODE
MOV DPH,51H ;POINT TO 2000
MOV DPL,54H
MOVX @DPTR,A ;MOVE CODE TO XRAM
INC 54H ;INC DEST PTR
INC 52H ;INC SOURCE PTR
DJNZ R7,NEXT
MOV R7,#16 ;COUNT=16
MORE:MOV DPL,52H ;POINT TO CODE
MOV DPH,50H
CLR A
MOVC A,@A+DPTR ;GET CODE
ADD A,#30H ;ADD 30H
MOV DPL,53H ;POINT TO XRAM 2010
MOV DPH,51H
MOVX @DPTR,A ;SEND TO XRAM
INC 52H ;INC SOURCE PTR
INC 53H ;INC DEST POINTER
DJNZ R7,MORE
LJMP 0000