>                Just for once, not a problem mail!
> I've recently been using Bourns' new ACE-128 rotary encoders.
> (For those of you who haven't meet them, info is on my web page
> shown below)
> These give out a type of 'grey-code' to give the position of the
> encoder. Bourns say to just use a 256 byte look-up table, but as
> that can be upto 1/2 a PIC's memory, I've writen decoder routines
> that are shorter (at the expense of speed). In case anybody
> else out there is using these beasties, I stuck 4 of the routines
> on my web page.
>
>     If anybody uses any of the routines, and / or improves on the
> code size, for the speed specified, could they let me know - I've
> spent the best part of a week trying to optimise them, but I isn't
> perfect!

Hmm... I've looked at your web page and I must say that encoder sure does
have a wierd coding sequence, doesn't it.... :-)  Methinks I'll have to
brainparse that one a little bit...