AVR-Chat

On Saturday 19 June 2004 11:47, David VanHorn wrote:
> What's the fastest way to get the exclusive or, of four bits in a
> register?

Hardware. :-)

> 0000 = 0
> 0001 = 1
> 0010 = 1
> 0011 = 0
> 0100 = 1
> 0101 = 0
> 0110 = 0
> 0111 = 0
>  and so on...

I hate to be pedantic but are these any four bits; adjacent bits;
low or high nibble?

> Not for a parity generator, but I think it ends up as the same problem.

-- 
/"\ Bernd Felsche - Innovative Reckoning, Perth, Western Australia
\ /  ASCII ribbon campaign | I'm a .signature virus!
 X   against HTML mail     | Copy me into your ~/.signature
/ \  and postings          | to help me spread!