> PSL wrote:
>
> Hello people
>
> Sorry to bother you all again but i have a question there hope you can help
> me...
>
>
> BTFSC     PORTD,0
> Can I relpace the 0 with a memory address???


It means Bit_Test_File_skip_next_cmd_if_bit_is_clear.
In your example it tests bit 0 of portD (portD.0)

> BTFSC     PORTD,PIN
> Where pin is a ram location...

It tests portD.pin (pin from 0 to 7)

> thanks anyway....
Read PIC command set description at any datasheets.
Certainly it will helps you ;-)
>
> regards
> PSL

WBR Dmitry.