Samo:
>I have 251 bytes long table and I'd like to know how to put it to the
>beginning of 256 bytes block. Where do I have to put it to have access to
>all bytes in table?

You can use the ORG statement to line it up on a 256 byte boundary.
eg. ORG h'800'
Another way is to keep track & adjust PCLATH if the table spans a 256
byte boundary. This is from one of my projects:

phase_table:                    ;
         movwf   temp1           ;
         movlw   high tbl_phase  ;get high bits on table start address
         movwf   pclath          ;set up high bits of program counter
         movf    temp1,w         ;
         addlw   low tbl_phase   ;add table start address to entry byte
         btfsc   carry           ;is that going to push us over a boundary?
         incf    pclath,f        ;yes, set pclath for page crossing
         movwf   pcl             ;calculate jump
tbl_phase:                      ;
         retlw   .0              ;0
         retlw   .3              ;1
         and so on with the rest of the table...

David...

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