> In my program I am using the program counter to sequence several routines. I
> am using it like this:
>
> MOVF   SSTATE,W
> MOVWF PCL

Recall that the lower 5 bits of 'PCLATH' are concatenated to PCL for a
computed goto such as this.

>
> SSTATE is the address of the specific routine. My problem is SSTATE is an 8
> bit value and my routine length goes over 255 addresses. When it goes over 255
> it goes to the beginning of the program. I use the PAGE command before and
> after routines, but it must be larger than a page.
>
> I have to keep the code efficient because of the serial timing, I don't have
> much room for additional code.
>
> What are my options?
>
> Is there an efficient way to make SSTATE a 16bit number and will that even
> work? For example if SSTATE was at 355 would the program counter no where to
> go?

You can do something like this:

        MOVF    SSTATE_HI,W     ;Get the high byte of the destination
        MOVWF   PCLATH          ;(actually only bits 0-4 are used)
        MOVF    SSTATE_LO,W     ;Get the low byte
        MOVWF   PCL             ;

However, if you know the destination bank AND it happens to be only one
bit different than the current bank, then you could get by with BSF/BCF's.

        BSF     PCLATH,0        ;Currently in bank 0, but we are about to
                                ;branch into bank 1
        MOVF    SSTATE,W        ;Get the low byte
        MOVWF   PCL             ;

Needless to say, you'll have to be extremely careful how the states are
grouped to avoid an inadvertent branch.

Scott