Edward Witte wrote:
>
> Does anyone have some code which interpolates two 8 bit values from a lookup
> table, to run on a 16F84?

Ed,

You might want to take a look at:

http://www.interstice.com/~sdattalo/technical/software/pic/picsine.html

This code uses linear interpolation in calculating the sine of an
angle. The table contains 16 elements. An 8-bit 'frequency' variable
is split into two nibbles. The upper nibble indexes the table while
the lower one interpolates between consecutive entries in the table.

It executes in about 65 cycles, but this can be reduced by 7 or so.
(There's some extra stuff specific to the sine function.)


Scott
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