>> maybe the problem is that you're trying to do a bitwise AND on individual
>> bits, rather than on bytes? A bitwise AND on two separate bits makes no
>> sense, really...
>IMHO it does.
>
>        A & B = C
>        0   0   0
>        0   1   0
>        1   0   0
>        1   1   1

That's the truth table for a logical AND, not  a bitwise one. Actually,
in this case (comparing two individual bits) maybe bitwise reduces to the
same thing as logical?

But typically you use bitwise AND to compare several individual bits
simultaneously, and their positions in the byte are important, for
instance:

A         &    B         =    C
00001111       01010101       00000101

This is just like the PIC AND instructions. I'd think that the compiler
would want to make a bitwise AND in C compile to a single PIC
instruction, since it can. But if you give the compiler two separate bits
in the same byte (like these flag bits in the intcon register), it can't
do that.

But in any case, if he's comparing two discrete values to see if they're
both "set", then conceptually he's doing a logical AND, and IMHO he
should use the logical AND operator (&&) to do it. If nothing else, it'll
make for easier reading 6 months from now when he's trying to figure out
what he did :-)

Dave Johnson