Hi

I've been looking at the table command of the 18F, and am trying to figure
out the syntax.

On the 16F, it was simply....



d_user                   ;default code
        addwf  PCL,f
        dt     "6781234",0D

readit
        call   d_user    ;get table value of user code
        movwf  gotit     ;stick it in
        return

----------------------
The 16F to 18F migration example shows....


RdStr   movlw  HIGH(string)
        movwf  TBLPTRH         ; load high byte of pointer (0x12)
        movlw  LOW(string)
        movwf  TBLPTRL         ; load low byte of pointer (0x34)

read    tblrd*+                ; read byte from program memory,
                               ; and increment pointer one byte
        movff  TABLAT,PORTB    ; move byte from table latch to output port B
        tstfsz TABLAT          ; was retrieved byte a null?
goto    read                   ; no, do loop again
        return

ORG 0x1234
String DW "This is a test.",0x00 ; text string

_________________


So do I simply write;

d_user                       ;default code
        dw     "6781234",0D

readit
        movlw  HIGH(d_user)
        movwf  TBLPTRH       ; load high byte of pointer
        movlw  LOW(d_user)
        movwf  TBLPTRL       ; load low byte of pointer

        tblrd*               ; read byte from program memory,
        movff  TABLAT,gotit  ; move byte from table


-The above does work, just not sure how correct it is.
-Is it necessary to ORG each string?
-If so, must it be on an even boundry?
-I suppose I can just 'clrf TBLPTRU' initially instead of setting it each
time?



Regards
Roland Jollivet

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