[LinuxBIOS] do_ram_command

Corey Osgood corey.osgood at gmail.com
Wed Jun 20 05:24:33 CEST 2007


Peter Stuge wrote:
> On Tue, Jun 19, 2007 at 12:34:51PM -0400, Corey Osgood wrote:
>   
>> No. The binary and is kinda weird, if you have, say, 11100011 and
>> 01010101, the binary and will give an answer of which bits are the
>> same between the two,
>>     
>
> Not quite, that's XOR+NOT, exclusive or with inversion.
>
> The truth table for AND is:
> a b y
> 0 0 0
> 0 1 0
> 1 0 0
> 1 1 1
>
> The result is 1 only when both input bits are 1. The result is 0
> otherwise.
>
>
>   
>> so 01000001.
>>     
>
> This is correct however.
>
>
>   11100011
> & 01010101
>   --------
>   01000001
>
> (use a fixed width font)
>
>
> //Peter

Thanks, that was a much better explanation than mine.

-Corey




More information about the coreboot mailing list