Hello everybody

Now I understand where is error and found my problems. I point DPTR to somewhere that doesn't contain Table's content.

Here is my repaired code

;table size = 864 == 0360h

main:
mov r7, #0
mov r6, #0
loop:
call lookup ;take a element from table
mov b, r7 ; increase pointer
inc b
mov r7,b
cjne r7, #060h, checkloop ; end of table
cjne r6, #003h, checkloop
jmp end ; YES --> end
checkloop:
cjne r7, #0FFh, loop ; no --> continue
mov r7, #0 ; new loop
mov b, r6
inc b
mov r6, b
jmp loop
end:
...

I think this must be worked (it runs well with simulate porgram win8051_IDE).

But it doesn't work in my real board!!!
May be my board is error??

IF anyone can find any error in that code. Please tell me.

Thanks,
Toan.