William Bross wrote:

> Hi Peter,

> replace :
>         tris    PORT_A
> with:
>         ; set page bit
>         ; move literal or register value for PORT_A into W
>         ; move W into TRIS_A    register
>         ; clear page bit

  Please don't!  A *complete* waste of time.  Just fix the ERRORLEVEL
and use the original code which was designed correctly.  Who wants code
bloat?

> As far as the default destination value, it is just an annoying
> reminder of where your result ends up.  A default dest of '0' places
> the result in the W reg and a default dest of '1' places the result
> back into the file register.

  Ah yes, now I see.  OK, I amend my previous suggestion.  *DON'T* put
ERRORLEVEL -305 in the source file.  The include file contains
definitions of W and F.  *USE THEM* in all file instructions where this
reminder occurs.  It is explaining to you that a ",F" is missing from
each of the instructions, so edit that in.

   *Never* use the values 0 or 1, you are asking for deep, deep trouble.
What's the deepest, deep trouble you can have with your program?  Well,
in all probability, that problem where you spend hours (days?) looking
through a piece of code which you *know* works perfectly because you've
worked it through, step by step, hundreds of times, but ... you just
forgot each time what the "1" or "0" meant, or just sort of thought that
it defaulted to using W.
--
  Cheers,
        Paul B.