Mayes uk <mike@d-m-g.demon.co.uk> wrote:

> If I declare a constant with more than 2 bytes, is it possible
> to access the middle bytes?
>
> Example:
>
> MyConst  equ  h'01020304'
>
>    movlw   ???? (MyConst)    ;how do I access the 3rd byte???

Mike:

    MOVLW ((MYCONST) >> 8) & 0xFF

It's probably easiest if you use parameterized #DEFINEs to define
the shift-and-AND operations for each byte-position... Then you can
just say:

    MOVLW LSB2(MYCONT)

or whatever.

By the way, it's best to use shift-and-AND macros instead of LOW and
HIGH... In at least some versions of M