Hi Carlos,

You come in CICLO routine with R0 loaded with 41H. Why after INC R0, you test CJNE R0,#BH,CICLO2 ?. I mean, why #BH ?
You wrote:
-Im trying to build a program who sents a set of bytes via one pin of the P1-
I'm wonder which bit on P1 are you concerned since you use MOV P1,A after every rotate.

About your question: Can I store those fixed bytes somewhere in the eeprom?? (look at the label head1 on the code, I'm using a MOV because a didn't find yet a better way to do it, but this is code, not fixed data and I will lose some time to execute this part)

Yes. You can. Just use DB (DefineByte) assembler directive. All you have to do is to place a label like HEAD1: and then DB B8H,80H,A6H,10H,0DH,07H,E1H,4BH,06H,4CH,32H,59H,FFH.
You must initialise at begining DPTR like MOV DPTR, #HEAD1 and instead INC R0 and MOV BYTE,@R0 place
CLR A
INC DPTR
MOVC A,@A+DPTR
MOV BYTE,A


Regards,
Silviu